CVE-2023-53021 (GCVE-0-2023-53021)
Vulnerability from cvelistv5
Published
2025-03-27 16:43
Modified
2025-05-04 07:47
Severity ?
7.8 (High) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Summary
In the Linux kernel, the following vulnerability has been resolved: net/sched: sch_taprio: fix possible use-after-free syzbot reported a nasty crash [1] in net_tx_action() which made little sense until we got a repro. This repro installs a taprio qdisc, but providing an invalid TCA_RATE attribute. qdisc_create() has to destroy the just initialized taprio qdisc, and taprio_destroy() is called. However, the hrtimer used by taprio had already fired, therefore advance_sched() called __netif_schedule(). Then net_tx_action was trying to use a destroyed qdisc. We can not undo the __netif_schedule(), so we must wait until one cpu serviced the qdisc before we can proceed. Many thanks to Alexander Potapenko for his help. [1] BUG: KMSAN: uninit-value in queued_spin_trylock include/asm-generic/qspinlock.h:94 [inline] BUG: KMSAN: uninit-value in do_raw_spin_trylock include/linux/spinlock.h:191 [inline] BUG: KMSAN: uninit-value in __raw_spin_trylock include/linux/spinlock_api_smp.h:89 [inline] BUG: KMSAN: uninit-value in _raw_spin_trylock+0x92/0xa0 kernel/locking/spinlock.c:138 queued_spin_trylock include/asm-generic/qspinlock.h:94 [inline] do_raw_spin_trylock include/linux/spinlock.h:191 [inline] __raw_spin_trylock include/linux/spinlock_api_smp.h:89 [inline] _raw_spin_trylock+0x92/0xa0 kernel/locking/spinlock.c:138 spin_trylock include/linux/spinlock.h:359 [inline] qdisc_run_begin include/net/sch_generic.h:187 [inline] qdisc_run+0xee/0x540 include/net/pkt_sched.h:125 net_tx_action+0x77c/0x9a0 net/core/dev.c:5086 __do_softirq+0x1cc/0x7fb kernel/softirq.c:571 run_ksoftirqd+0x2c/0x50 kernel/softirq.c:934 smpboot_thread_fn+0x554/0x9f0 kernel/smpboot.c:164 kthread+0x31b/0x430 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 Uninit was created at: slab_post_alloc_hook mm/slab.h:732 [inline] slab_alloc_node mm/slub.c:3258 [inline] __kmalloc_node_track_caller+0x814/0x1250 mm/slub.c:4970 kmalloc_reserve net/core/skbuff.c:358 [inline] __alloc_skb+0x346/0xcf0 net/core/skbuff.c:430 alloc_skb include/linux/skbuff.h:1257 [inline] nlmsg_new include/net/netlink.h:953 [inline] netlink_ack+0x5f3/0x12b0 net/netlink/af_netlink.c:2436 netlink_rcv_skb+0x55d/0x6c0 net/netlink/af_netlink.c:2507 rtnetlink_rcv+0x30/0x40 net/core/rtnetlink.c:6108 netlink_unicast_kernel net/netlink/af_netlink.c:1319 [inline] netlink_unicast+0xf3b/0x1270 net/netlink/af_netlink.c:1345 netlink_sendmsg+0x1288/0x1440 net/netlink/af_netlink.c:1921 sock_sendmsg_nosec net/socket.c:714 [inline] sock_sendmsg net/socket.c:734 [inline] ____sys_sendmsg+0xabc/0xe90 net/socket.c:2482 ___sys_sendmsg+0x2a1/0x3f0 net/socket.c:2536 __sys_sendmsg net/socket.c:2565 [inline] __do_sys_sendmsg net/socket.c:2574 [inline] __se_sys_sendmsg net/socket.c:2572 [inline] __x64_sys_sendmsg+0x367/0x540 net/socket.c:2572 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd CPU: 0 PID: 13 Comm: ksoftirqd/0 Not tainted 6.0.0-rc2-syzkaller-47461-gac3859c02d7f #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/22/2022
References
Impacted products
Vendor Product Version
Linux Linux Version: 5a781ccbd19e4664babcbe4b4ead7aa2b9283d22
Version: 5a781ccbd19e4664babcbe4b4ead7aa2b9283d22
Version: 5a781ccbd19e4664babcbe4b4ead7aa2b9283d22
Version: 5a781ccbd19e4664babcbe4b4ead7aa2b9283d22
Version: 5a781ccbd19e4664babcbe4b4ead7aa2b9283d22
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{
  "containers": {
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        "metrics": [
          {
            "cvssV3_1": {
              "attackComplexity": "LOW",
              "attackVector": "LOCAL",
              "availabilityImpact": "HIGH",
              "baseScore": 7.8,
              "baseSeverity": "HIGH",
              "confidentialityImpact": "HIGH",
              "integrityImpact": "HIGH",
              "privilegesRequired": "LOW",
              "scope": "UNCHANGED",
              "userInteraction": "NONE",
              "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
              "version": "3.1"
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              "content": {
                "id": "CVE-2023-53021",
                "options": [
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                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
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                  {
                    "Technical Impact": "total"
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                "role": "CISA Coordinator",
                "timestamp": "2025-03-27T17:01:12.195276Z",
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                "description": "CWE-416 Use After Free",
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        "providerMetadata": {
          "dateUpdated": "2025-03-27T17:08:23.724Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
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          "vendor": "Linux",
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              "status": "unaffected",
              "version": "5.15.91",
              "versionType": "semver"
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              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.9",
              "versionType": "semver"
            },
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              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.2",
              "versionType": "original_commit_for_fix"
            }
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        }
      ],
      "cpeApplicability": [
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          "nodes": [
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                  "vulnerable": true
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              "negate": false,
              "operator": "OR"
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      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet/sched: sch_taprio: fix possible use-after-free\n\nsyzbot reported a nasty crash [1] in net_tx_action() which\nmade little sense until we got a repro.\n\nThis repro installs a taprio qdisc, but providing an\ninvalid TCA_RATE attribute.\n\nqdisc_create() has to destroy the just initialized\ntaprio qdisc, and taprio_destroy() is called.\n\nHowever, the hrtimer used by taprio had already fired,\ntherefore advance_sched() called __netif_schedule().\n\nThen net_tx_action was trying to use a destroyed qdisc.\n\nWe can not undo the __netif_schedule(), so we must wait\nuntil one cpu serviced the qdisc before we can proceed.\n\nMany thanks to Alexander Potapenko for his help.\n\n[1]\nBUG: KMSAN: uninit-value in queued_spin_trylock include/asm-generic/qspinlock.h:94 [inline]\nBUG: KMSAN: uninit-value in do_raw_spin_trylock include/linux/spinlock.h:191 [inline]\nBUG: KMSAN: uninit-value in __raw_spin_trylock include/linux/spinlock_api_smp.h:89 [inline]\nBUG: KMSAN: uninit-value in _raw_spin_trylock+0x92/0xa0 kernel/locking/spinlock.c:138\n queued_spin_trylock include/asm-generic/qspinlock.h:94 [inline]\n do_raw_spin_trylock include/linux/spinlock.h:191 [inline]\n __raw_spin_trylock include/linux/spinlock_api_smp.h:89 [inline]\n _raw_spin_trylock+0x92/0xa0 kernel/locking/spinlock.c:138\n spin_trylock include/linux/spinlock.h:359 [inline]\n qdisc_run_begin include/net/sch_generic.h:187 [inline]\n qdisc_run+0xee/0x540 include/net/pkt_sched.h:125\n net_tx_action+0x77c/0x9a0 net/core/dev.c:5086\n __do_softirq+0x1cc/0x7fb kernel/softirq.c:571\n run_ksoftirqd+0x2c/0x50 kernel/softirq.c:934\n smpboot_thread_fn+0x554/0x9f0 kernel/smpboot.c:164\n kthread+0x31b/0x430 kernel/kthread.c:376\n ret_from_fork+0x1f/0x30\n\nUninit was created at:\n slab_post_alloc_hook mm/slab.h:732 [inline]\n slab_alloc_node mm/slub.c:3258 [inline]\n __kmalloc_node_track_caller+0x814/0x1250 mm/slub.c:4970\n kmalloc_reserve net/core/skbuff.c:358 [inline]\n __alloc_skb+0x346/0xcf0 net/core/skbuff.c:430\n alloc_skb include/linux/skbuff.h:1257 [inline]\n nlmsg_new include/net/netlink.h:953 [inline]\n netlink_ack+0x5f3/0x12b0 net/netlink/af_netlink.c:2436\n netlink_rcv_skb+0x55d/0x6c0 net/netlink/af_netlink.c:2507\n rtnetlink_rcv+0x30/0x40 net/core/rtnetlink.c:6108\n netlink_unicast_kernel net/netlink/af_netlink.c:1319 [inline]\n netlink_unicast+0xf3b/0x1270 net/netlink/af_netlink.c:1345\n netlink_sendmsg+0x1288/0x1440 net/netlink/af_netlink.c:1921\n sock_sendmsg_nosec net/socket.c:714 [inline]\n sock_sendmsg net/socket.c:734 [inline]\n ____sys_sendmsg+0xabc/0xe90 net/socket.c:2482\n ___sys_sendmsg+0x2a1/0x3f0 net/socket.c:2536\n __sys_sendmsg net/socket.c:2565 [inline]\n __do_sys_sendmsg net/socket.c:2574 [inline]\n __se_sys_sendmsg net/socket.c:2572 [inline]\n __x64_sys_sendmsg+0x367/0x540 net/socket.c:2572\n do_syscall_x64 arch/x86/entry/common.c:50 [inline]\n do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80\n entry_SYSCALL_64_after_hwframe+0x63/0xcd\n\nCPU: 0 PID: 13 Comm: ksoftirqd/0 Not tainted 6.0.0-rc2-syzkaller-47461-gac3859c02d7f #0\nHardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/22/2022"
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-05-04T07:47:51.116Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/1200388a0b1c3c6fda48d4d2143db8f7e4ef5348"
        },
        {
          "url": "https://git.kernel.org/stable/c/c60fe70078d6e515f424cb868d07e00411b27fbc"
        },
        {
          "url": "https://git.kernel.org/stable/c/c53acbf2facfdfabdc6e6984a1a38f5d38b606a1"
        },
        {
          "url": "https://git.kernel.org/stable/c/d3b2d2820a005e43855fa71b80c4a4b194201c60"
        },
        {
          "url": "https://git.kernel.org/stable/c/3a415d59c1dbec9d772dbfab2d2520d98360caae"
        }
      ],
      "title": "net/sched: sch_taprio: fix possible use-after-free",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2023-53021",
    "datePublished": "2025-03-27T16:43:47.860Z",
    "dateReserved": "2025-03-27T16:40:15.752Z",
    "dateUpdated": "2025-05-04T07:47:51.116Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1",
  "vulnerability-lookup:meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2023-53021\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2025-03-27T17:15:51.580\",\"lastModified\":\"2025-04-01T15:40:10.120\",\"vulnStatus\":\"Analyzed\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nnet/sched: sch_taprio: fix possible use-after-free\\n\\nsyzbot reported a nasty crash [1] in net_tx_action() which\\nmade little sense until we got a repro.\\n\\nThis repro installs a taprio qdisc, but providing an\\ninvalid TCA_RATE attribute.\\n\\nqdisc_create() has to destroy the just initialized\\ntaprio qdisc, and taprio_destroy() is called.\\n\\nHowever, the hrtimer used by taprio had already fired,\\ntherefore advance_sched() called __netif_schedule().\\n\\nThen net_tx_action was trying to use a destroyed qdisc.\\n\\nWe can not undo the __netif_schedule(), so we must wait\\nuntil one cpu serviced the qdisc before we can proceed.\\n\\nMany thanks to Alexander Potapenko for his help.\\n\\n[1]\\nBUG: KMSAN: uninit-value in queued_spin_trylock include/asm-generic/qspinlock.h:94 [inline]\\nBUG: KMSAN: uninit-value in do_raw_spin_trylock include/linux/spinlock.h:191 [inline]\\nBUG: KMSAN: uninit-value in __raw_spin_trylock include/linux/spinlock_api_smp.h:89 [inline]\\nBUG: KMSAN: uninit-value in _raw_spin_trylock+0x92/0xa0 kernel/locking/spinlock.c:138\\n queued_spin_trylock include/asm-generic/qspinlock.h:94 [inline]\\n do_raw_spin_trylock include/linux/spinlock.h:191 [inline]\\n __raw_spin_trylock include/linux/spinlock_api_smp.h:89 [inline]\\n _raw_spin_trylock+0x92/0xa0 kernel/locking/spinlock.c:138\\n spin_trylock include/linux/spinlock.h:359 [inline]\\n qdisc_run_begin include/net/sch_generic.h:187 [inline]\\n qdisc_run+0xee/0x540 include/net/pkt_sched.h:125\\n net_tx_action+0x77c/0x9a0 net/core/dev.c:5086\\n __do_softirq+0x1cc/0x7fb kernel/softirq.c:571\\n run_ksoftirqd+0x2c/0x50 kernel/softirq.c:934\\n smpboot_thread_fn+0x554/0x9f0 kernel/smpboot.c:164\\n kthread+0x31b/0x430 kernel/kthread.c:376\\n ret_from_fork+0x1f/0x30\\n\\nUninit was created at:\\n slab_post_alloc_hook mm/slab.h:732 [inline]\\n slab_alloc_node mm/slub.c:3258 [inline]\\n __kmalloc_node_track_caller+0x814/0x1250 mm/slub.c:4970\\n kmalloc_reserve net/core/skbuff.c:358 [inline]\\n __alloc_skb+0x346/0xcf0 net/core/skbuff.c:430\\n alloc_skb include/linux/skbuff.h:1257 [inline]\\n nlmsg_new include/net/netlink.h:953 [inline]\\n netlink_ack+0x5f3/0x12b0 net/netlink/af_netlink.c:2436\\n netlink_rcv_skb+0x55d/0x6c0 net/netlink/af_netlink.c:2507\\n rtnetlink_rcv+0x30/0x40 net/core/rtnetlink.c:6108\\n netlink_unicast_kernel net/netlink/af_netlink.c:1319 [inline]\\n netlink_unicast+0xf3b/0x1270 net/netlink/af_netlink.c:1345\\n netlink_sendmsg+0x1288/0x1440 net/netlink/af_netlink.c:1921\\n sock_sendmsg_nosec net/socket.c:714 [inline]\\n sock_sendmsg net/socket.c:734 [inline]\\n ____sys_sendmsg+0xabc/0xe90 net/socket.c:2482\\n ___sys_sendmsg+0x2a1/0x3f0 net/socket.c:2536\\n __sys_sendmsg net/socket.c:2565 [inline]\\n __do_sys_sendmsg net/socket.c:2574 [inline]\\n __se_sys_sendmsg net/socket.c:2572 [inline]\\n __x64_sys_sendmsg+0x367/0x540 net/socket.c:2572\\n do_syscall_x64 arch/x86/entry/common.c:50 [inline]\\n do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80\\n entry_SYSCALL_64_after_hwframe+0x63/0xcd\\n\\nCPU: 0 PID: 13 Comm: ksoftirqd/0 Not tainted 6.0.0-rc2-syzkaller-47461-gac3859c02d7f #0\\nHardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/22/2022\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: net/sched: sch_taprio: correcci\u00f3n de posible error de use-after-free syzbot report\u00f3 un fallo grave [1] en net_tx_action() que no ten\u00eda sentido hasta que se reprodujo. Esta reproducci\u00f3n instala una qdisc de Taprio, pero proporciona un atributo TCA_RATE no v\u00e1lido. qdisc_create() debe destruir la qdisc de Taprio reci\u00e9n inicializada, y se llama a taprio_destroy(). Sin embargo, el temporizador hr usado por Taprio ya se hab\u00eda ejecutado, por lo que advance_sched() llam\u00f3 a __netif_schedule(). Entonces, net_tx_action intentaba usar una qdisc destruida. No podemos deshacer __netif_schedule(), por lo que debemos esperar a que una CPU haya dado servicio a la qdisc antes de continuar. Muchas gracias a Alexander Potapenko por su ayuda. [1] ERROR: KMSAN: valor no inicializado en queued_spin_trylock include/asm-generic/qspinlock.h:94 [en l\u00ednea] ERROR: KMSAN: valor no inicializado en do_raw_spin_trylock include/linux/spinlock.h:191 [en l\u00ednea] ERROR: KMSAN: valor no inicializado en __raw_spin_trylock include/linux/spinlock_api_smp.h:89 [en l\u00ednea] ERROR: KMSAN: valor no inicializado en _raw_spin_trylock+0x92/0xa0 kernel/locking/spinlock.c:138 queued_spin_trylock include/asm-generic/qspinlock.h:94 [en l\u00ednea] do_raw_spin_trylock include/linux/spinlock.h:191 [en l\u00ednea] __raw_spin_trylock incluir/linux/spinlock_api_smp.h:89 [en l\u00ednea] _raw_spin_trylock+0x92/0xa0 kernel/locking/spinlock.c:138 spin_trylock incluir/linux/spinlock.h:359 [en l\u00ednea] qdisc_run_begin incluir/net/sch_generic.h:187 [en l\u00ednea] qdisc_run+0xee/0x540 incluir/net/pkt_sched.h:125 net_tx_action+0x77c/0x9a0 net/core/dev.c:5086 __do_softirq+0x1cc/0x7fb kernel/softirq.c:571 run_ksoftirqd+0x2c/0x50 kernel/softirq.c:934 smpboot_thread_fn+0x554/0x9f0 kernel/smpboot.c:164 kthread+0x31b/0x430 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 Uninit se cre\u00f3 en: slab_post_alloc_hook mm/slab.h:732 [en l\u00ednea] slab_alloc_node mm/slub.c:3258 [en l\u00ednea] __kmalloc_node_track_caller+0x814/0x1250 mm/slub.c:4970 kmalloc_reserve net/core/skbuff.c:358 [en l\u00ednea] __alloc_skb+0x346/0xcf0 net/core/skbuff.c:430 alloc_skb include/linux/skbuff.h:1257 [en l\u00ednea] nlmsg_new include/net/netlink.h:953 [en l\u00ednea] netlink_ack+0x5f3/0x12b0 net/netlink/af_netlink.c:2436 netlink_rcv_skb+0x55d/0x6c0 net/netlink/af_netlink.c:2507 rtnetlink_rcv+0x30/0x40 net/core/rtnetlink.c:6108 netlink_unicast_kernel net/netlink/af_netlink.c:1319 [en l\u00ednea] netlink_unicast+0xf3b/0x1270 net/netlink/af_netlink.c:1345 netlink_sendmsg+0x1288/0x1440 net/netlink/af_netlink.c:1921 sock_sendmsg_nosec net/socket.c:714 [en l\u00ednea] sock_sendmsg net/socket.c:734 [en l\u00ednea] ____sys_sendmsg+0xabc/0xe90 net/socket.c:2482 ___sys_sendmsg+0x2a1/0x3f0 net/socket.c:2536 __sys_sendmsg net/socket.c:2565 [en l\u00ednea] __do_sys_sendmsg net/socket.c:2574 [en l\u00ednea] __se_sys_sendmsg net/socket.c:2572 [en l\u00ednea] __x64_sys_sendmsg+0x367/0x540 net/socket.c:2572 do_syscall_x64 arch/x86/entry/common.c:50 [en l\u00ednea] do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd CPU: 0 PID: 13 Comm: ksoftirqd/0 No contaminado 6.0.0-rc2-syzkaller-47461-gac3859c02d7f #0 Nombre del hardware: Google Google Compute Engine/Google Compute Engine, BIOS Google 22/07/2022\"}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"134c704f-9b21-4f2e-91b3-4a467353bcc0\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H\",\"baseScore\":7.8,\"baseSeverity\":\"HIGH\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"HIGH\",\"integrityImpact\":\"HIGH\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":1.8,\"impactScore\":5.9}]},\"weaknesses\":[{\"source\":\"134c704f-9b21-4f2e-91b3-4a467353bcc0\",\"type\":\"Secondary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-416\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"4.20\",\"versionEndExcluding\":\"5.4.231\",\"matchCriteriaId\":\"79CA608C-BC5E-4BB5-9250-771AEC44F412\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.5\",\"versionEndExcluding\":\"5.10.166\",\"matchCriteriaId\":\"A44D9D24-661C-40D4-8735-4CEB1C7C02F2\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.11\",\"versionEndExcluding\":\"5.15.91\",\"matchCriteriaId\":\"91C2E92D-CC25-4FBD-8824-56A148119D7E\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.16\",\"versionEndExcluding\":\"6.1.9\",\"matchCriteriaId\":\"ED5B6045-B1D2-4E03-B194-9005A351BCAE\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.2:rc1:*:*:*:*:*:*\",\"matchCriteriaId\":\"FF501633-2F44-4913-A8EE-B021929F49F6\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.2:rc2:*:*:*:*:*:*\",\"matchCriteriaId\":\"2BDA597B-CAC1-4DF0-86F0-42E142C654E9\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.2:rc3:*:*:*:*:*:*\",\"matchCriteriaId\":\"725C78C9-12CE-406F-ABE8-0813A01D66E8\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.2:rc4:*:*:*:*:*:*\",\"matchCriteriaId\":\"A127C155-689C-4F67-B146-44A57F4BFD85\"}]}]}],\"references\":[{\"url\":\"https://git.kernel.org/stable/c/1200388a0b1c3c6fda48d4d2143db8f7e4ef5348\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/3a415d59c1dbec9d772dbfab2d2520d98360caae\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/c53acbf2facfdfabdc6e6984a1a38f5d38b606a1\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/c60fe70078d6e515f424cb868d07e00411b27fbc\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/d3b2d2820a005e43855fa71b80c4a4b194201c60\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]}]}}",
    "vulnrichment": {
      "containers": "{\"adp\": [{\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"cvssV3_1\": {\"scope\": \"UNCHANGED\", \"version\": \"3.1\", \"baseScore\": 7.8, \"attackVector\": \"LOCAL\", \"baseSeverity\": \"HIGH\", \"vectorString\": \"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H\", \"integrityImpact\": \"HIGH\", \"userInteraction\": \"NONE\", \"attackComplexity\": \"LOW\", \"availabilityImpact\": \"HIGH\", \"privilegesRequired\": \"LOW\", \"confidentialityImpact\": \"HIGH\"}}, {\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2023-53021\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"total\"}], \"version\": \"2.0.3\", \"timestamp\": \"2025-03-27T17:01:12.195276Z\"}}}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-416\", \"description\": \"CWE-416 Use After Free\"}]}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2025-03-27T17:01:13.583Z\"}}], \"cna\": {\"title\": \"net/sched: sch_taprio: fix possible use-after-free\", \"affected\": [{\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"5a781ccbd19e4664babcbe4b4ead7aa2b9283d22\", \"lessThan\": \"1200388a0b1c3c6fda48d4d2143db8f7e4ef5348\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"5a781ccbd19e4664babcbe4b4ead7aa2b9283d22\", \"lessThan\": \"c60fe70078d6e515f424cb868d07e00411b27fbc\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"5a781ccbd19e4664babcbe4b4ead7aa2b9283d22\", \"lessThan\": \"c53acbf2facfdfabdc6e6984a1a38f5d38b606a1\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"5a781ccbd19e4664babcbe4b4ead7aa2b9283d22\", \"lessThan\": 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\"5.15.*\"}, {\"status\": \"unaffected\", \"version\": \"6.1.9\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.1.*\"}, {\"status\": \"unaffected\", \"version\": \"6.2\", \"versionType\": \"original_commit_for_fix\", \"lessThanOrEqual\": \"*\"}], \"programFiles\": [\"include/net/sch_generic.h\", \"net/sched/sch_taprio.c\"], \"defaultStatus\": \"affected\"}], \"references\": [{\"url\": \"https://git.kernel.org/stable/c/1200388a0b1c3c6fda48d4d2143db8f7e4ef5348\"}, {\"url\": \"https://git.kernel.org/stable/c/c60fe70078d6e515f424cb868d07e00411b27fbc\"}, {\"url\": \"https://git.kernel.org/stable/c/c53acbf2facfdfabdc6e6984a1a38f5d38b606a1\"}, {\"url\": \"https://git.kernel.org/stable/c/d3b2d2820a005e43855fa71b80c4a4b194201c60\"}, {\"url\": \"https://git.kernel.org/stable/c/3a415d59c1dbec9d772dbfab2d2520d98360caae\"}], \"x_generator\": {\"engine\": \"bippy-5f407fcff5a0\"}, \"descriptions\": [{\"lang\": \"en\", \"value\": \"In the Linux kernel, the following vulnerability has been resolved:\\n\\nnet/sched: sch_taprio: fix possible use-after-free\\n\\nsyzbot reported a nasty crash [1] in net_tx_action() which\\nmade little sense until we got a repro.\\n\\nThis repro installs a taprio qdisc, but providing an\\ninvalid TCA_RATE attribute.\\n\\nqdisc_create() has to destroy the just initialized\\ntaprio qdisc, and taprio_destroy() is called.\\n\\nHowever, the hrtimer used by taprio had already fired,\\ntherefore advance_sched() called __netif_schedule().\\n\\nThen net_tx_action was trying to use a destroyed qdisc.\\n\\nWe can not undo the __netif_schedule(), so we must wait\\nuntil one cpu serviced the qdisc before we can proceed.\\n\\nMany thanks to Alexander Potapenko for his help.\\n\\n[1]\\nBUG: KMSAN: uninit-value in queued_spin_trylock include/asm-generic/qspinlock.h:94 [inline]\\nBUG: KMSAN: uninit-value in do_raw_spin_trylock include/linux/spinlock.h:191 [inline]\\nBUG: KMSAN: uninit-value in __raw_spin_trylock include/linux/spinlock_api_smp.h:89 [inline]\\nBUG: KMSAN: uninit-value in _raw_spin_trylock+0x92/0xa0 kernel/locking/spinlock.c:138\\n queued_spin_trylock include/asm-generic/qspinlock.h:94 [inline]\\n do_raw_spin_trylock include/linux/spinlock.h:191 [inline]\\n __raw_spin_trylock include/linux/spinlock_api_smp.h:89 [inline]\\n _raw_spin_trylock+0x92/0xa0 kernel/locking/spinlock.c:138\\n spin_trylock include/linux/spinlock.h:359 [inline]\\n qdisc_run_begin include/net/sch_generic.h:187 [inline]\\n qdisc_run+0xee/0x540 include/net/pkt_sched.h:125\\n net_tx_action+0x77c/0x9a0 net/core/dev.c:5086\\n __do_softirq+0x1cc/0x7fb kernel/softirq.c:571\\n run_ksoftirqd+0x2c/0x50 kernel/softirq.c:934\\n smpboot_thread_fn+0x554/0x9f0 kernel/smpboot.c:164\\n kthread+0x31b/0x430 kernel/kthread.c:376\\n ret_from_fork+0x1f/0x30\\n\\nUninit was created at:\\n slab_post_alloc_hook mm/slab.h:732 [inline]\\n slab_alloc_node mm/slub.c:3258 [inline]\\n __kmalloc_node_track_caller+0x814/0x1250 mm/slub.c:4970\\n kmalloc_reserve net/core/skbuff.c:358 [inline]\\n __alloc_skb+0x346/0xcf0 net/core/skbuff.c:430\\n alloc_skb include/linux/skbuff.h:1257 [inline]\\n nlmsg_new include/net/netlink.h:953 [inline]\\n netlink_ack+0x5f3/0x12b0 net/netlink/af_netlink.c:2436\\n netlink_rcv_skb+0x55d/0x6c0 net/netlink/af_netlink.c:2507\\n rtnetlink_rcv+0x30/0x40 net/core/rtnetlink.c:6108\\n netlink_unicast_kernel net/netlink/af_netlink.c:1319 [inline]\\n netlink_unicast+0xf3b/0x1270 net/netlink/af_netlink.c:1345\\n netlink_sendmsg+0x1288/0x1440 net/netlink/af_netlink.c:1921\\n sock_sendmsg_nosec net/socket.c:714 [inline]\\n sock_sendmsg net/socket.c:734 [inline]\\n ____sys_sendmsg+0xabc/0xe90 net/socket.c:2482\\n ___sys_sendmsg+0x2a1/0x3f0 net/socket.c:2536\\n __sys_sendmsg net/socket.c:2565 [inline]\\n __do_sys_sendmsg net/socket.c:2574 [inline]\\n __se_sys_sendmsg net/socket.c:2572 [inline]\\n __x64_sys_sendmsg+0x367/0x540 net/socket.c:2572\\n do_syscall_x64 arch/x86/entry/common.c:50 [inline]\\n do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80\\n entry_SYSCALL_64_after_hwframe+0x63/0xcd\\n\\nCPU: 0 PID: 13 Comm: ksoftirqd/0 Not tainted 6.0.0-rc2-syzkaller-47461-gac3859c02d7f #0\\nHardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/22/2022\"}], \"providerMetadata\": {\"orgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"shortName\": \"Linux\", \"dateUpdated\": \"2025-03-27T16:43:47.860Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2023-53021\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2025-03-27T17:08:23.724Z\", \"dateReserved\": \"2025-03-27T16:40:15.752Z\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"datePublished\": \"2025-03-27T16:43:47.860Z\", \"assignerShortName\": \"Linux\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.1"
    }
  }
}


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