CVE-2025-38150 (GCVE-0-2025-38150)
Vulnerability from cvelistv5
Published
2025-07-03 08:35
Modified
2025-07-28 04:13
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: af_packet: move notifier's packet_dev_mc out of rcu critical section Syzkaller reports the following issue: BUG: sleeping function called from invalid context at kernel/locking/mutex.c:578 __mutex_lock+0x106/0xe80 kernel/locking/mutex.c:746 team_change_rx_flags+0x38/0x220 drivers/net/team/team_core.c:1781 dev_change_rx_flags net/core/dev.c:9145 [inline] __dev_set_promiscuity+0x3f8/0x590 net/core/dev.c:9189 netif_set_promiscuity+0x50/0xe0 net/core/dev.c:9201 dev_set_promiscuity+0x126/0x260 net/core/dev_api.c:286 packet_dev_mc net/packet/af_packet.c:3698 [inline] packet_dev_mclist_delete net/packet/af_packet.c:3722 [inline] packet_notifier+0x292/0xa60 net/packet/af_packet.c:4247 notifier_call_chain+0x1b3/0x3e0 kernel/notifier.c:85 call_netdevice_notifiers_extack net/core/dev.c:2214 [inline] call_netdevice_notifiers net/core/dev.c:2228 [inline] unregister_netdevice_many_notify+0x15d8/0x2330 net/core/dev.c:11972 rtnl_delete_link net/core/rtnetlink.c:3522 [inline] rtnl_dellink+0x488/0x710 net/core/rtnetlink.c:3564 rtnetlink_rcv_msg+0x7cf/0xb70 net/core/rtnetlink.c:6955 netlink_rcv_skb+0x219/0x490 net/netlink/af_netlink.c:2534 Calling `PACKET_ADD_MEMBERSHIP` on an ops-locked device can trigger the `NETDEV_UNREGISTER` notifier, which may require disabling promiscuous and/or allmulti mode. Both of these operations require acquiring the netdev instance lock. Move the call to `packet_dev_mc` outside of the RCU critical section. The `mclist` modifications (add, del, flush, unregister) are protected by the RTNL, not the RCU. The RCU only protects the `sklist` and its associated `sks`. The delayed operation on the `mclist` entry remains within the RTNL.
References
Impacted products
Vendor Product Version
Linux Linux Version: ad7c7b2172c388818a111455643491d75f535e90
Version: ad7c7b2172c388818a111455643491d75f535e90
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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "net/packet/af_packet.c",
            "net/packet/internal.h"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "2dd4781c5af99415ebbd2f7cc763feb109863c05",
              "status": "affected",
              "version": "ad7c7b2172c388818a111455643491d75f535e90",
              "versionType": "git"
            },
            {
              "lessThan": "d8d85ef0a631df9127f202e6371bb33a0b589952",
              "status": "affected",
              "version": "ad7c7b2172c388818a111455643491d75f535e90",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "net/packet/af_packet.c",
            "net/packet/internal.h"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.15"
            },
            {
              "lessThan": "6.15",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.15.*",
              "status": "unaffected",
              "version": "6.15.3",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.16",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.15.3",
                  "versionStartIncluding": "6.15",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.16",
                  "versionStartIncluding": "6.15",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\naf_packet: move notifier\u0027s packet_dev_mc out of rcu critical section\n\nSyzkaller reports the following issue:\n\n BUG: sleeping function called from invalid context at kernel/locking/mutex.c:578\n __mutex_lock+0x106/0xe80 kernel/locking/mutex.c:746\n team_change_rx_flags+0x38/0x220 drivers/net/team/team_core.c:1781\n dev_change_rx_flags net/core/dev.c:9145 [inline]\n __dev_set_promiscuity+0x3f8/0x590 net/core/dev.c:9189\n netif_set_promiscuity+0x50/0xe0 net/core/dev.c:9201\n dev_set_promiscuity+0x126/0x260 net/core/dev_api.c:286 packet_dev_mc net/packet/af_packet.c:3698 [inline]\n packet_dev_mclist_delete net/packet/af_packet.c:3722 [inline]\n packet_notifier+0x292/0xa60 net/packet/af_packet.c:4247\n notifier_call_chain+0x1b3/0x3e0 kernel/notifier.c:85\n call_netdevice_notifiers_extack net/core/dev.c:2214 [inline]\n call_netdevice_notifiers net/core/dev.c:2228 [inline]\n unregister_netdevice_many_notify+0x15d8/0x2330 net/core/dev.c:11972\n rtnl_delete_link net/core/rtnetlink.c:3522 [inline]\n rtnl_dellink+0x488/0x710 net/core/rtnetlink.c:3564\n rtnetlink_rcv_msg+0x7cf/0xb70 net/core/rtnetlink.c:6955\n netlink_rcv_skb+0x219/0x490 net/netlink/af_netlink.c:2534\n\nCalling `PACKET_ADD_MEMBERSHIP` on an ops-locked device can trigger\nthe `NETDEV_UNREGISTER` notifier, which may require disabling promiscuous\nand/or allmulti mode. Both of these operations require acquiring\nthe netdev instance lock.\n\nMove the call to `packet_dev_mc` outside of the RCU critical section.\nThe `mclist` modifications (add, del, flush, unregister) are protected by\nthe RTNL, not the RCU. The RCU only protects the `sklist` and its\nassociated `sks`. The delayed operation on the `mclist` entry remains\nwithin the RTNL."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-07-28T04:13:39.528Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/2dd4781c5af99415ebbd2f7cc763feb109863c05"
        },
        {
          "url": "https://git.kernel.org/stable/c/d8d85ef0a631df9127f202e6371bb33a0b589952"
        }
      ],
      "title": "af_packet: move notifier\u0027s packet_dev_mc out of rcu critical section",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2025-38150",
    "datePublished": "2025-07-03T08:35:55.257Z",
    "dateReserved": "2025-04-16T04:51:23.988Z",
    "dateUpdated": "2025-07-28T04:13:39.528Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1",
  "vulnerability-lookup:meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2025-38150\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2025-07-03T09:15:29.960\",\"lastModified\":\"2025-07-03T15:13:53.147\",\"vulnStatus\":\"Awaiting Analysis\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\naf_packet: move notifier\u0027s packet_dev_mc out of rcu critical section\\n\\nSyzkaller reports the following issue:\\n\\n BUG: sleeping function called from invalid context at kernel/locking/mutex.c:578\\n __mutex_lock+0x106/0xe80 kernel/locking/mutex.c:746\\n team_change_rx_flags+0x38/0x220 drivers/net/team/team_core.c:1781\\n dev_change_rx_flags net/core/dev.c:9145 [inline]\\n __dev_set_promiscuity+0x3f8/0x590 net/core/dev.c:9189\\n netif_set_promiscuity+0x50/0xe0 net/core/dev.c:9201\\n dev_set_promiscuity+0x126/0x260 net/core/dev_api.c:286 packet_dev_mc net/packet/af_packet.c:3698 [inline]\\n packet_dev_mclist_delete net/packet/af_packet.c:3722 [inline]\\n packet_notifier+0x292/0xa60 net/packet/af_packet.c:4247\\n notifier_call_chain+0x1b3/0x3e0 kernel/notifier.c:85\\n call_netdevice_notifiers_extack net/core/dev.c:2214 [inline]\\n call_netdevice_notifiers net/core/dev.c:2228 [inline]\\n unregister_netdevice_many_notify+0x15d8/0x2330 net/core/dev.c:11972\\n rtnl_delete_link net/core/rtnetlink.c:3522 [inline]\\n rtnl_dellink+0x488/0x710 net/core/rtnetlink.c:3564\\n rtnetlink_rcv_msg+0x7cf/0xb70 net/core/rtnetlink.c:6955\\n netlink_rcv_skb+0x219/0x490 net/netlink/af_netlink.c:2534\\n\\nCalling `PACKET_ADD_MEMBERSHIP` on an ops-locked device can trigger\\nthe `NETDEV_UNREGISTER` notifier, which may require disabling promiscuous\\nand/or allmulti mode. Both of these operations require acquiring\\nthe netdev instance lock.\\n\\nMove the call to `packet_dev_mc` outside of the RCU critical section.\\nThe `mclist` modifications (add, del, flush, unregister) are protected by\\nthe RTNL, not the RCU. The RCU only protects the `sklist` and its\\nassociated `sks`. The delayed operation on the `mclist` entry remains\\nwithin the RTNL.\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: af_packet: mover packet_dev_mc del notificador fuera de la secci\u00f3n cr\u00edtica de rcu Syzkaller informa el siguiente problema: ERROR: funci\u00f3n inactiva llamada desde un contexto no v\u00e1lido en kernel/locking/mutex.c:578 __mutex_lock+0x106/0xe80 kernel/locking/mutex.c:746 team_change_rx_flags+0x38/0x220 drivers/net/team/team_core.c:1781 dev_change_rx_flags net/core/dev.c:9145 [inline] __dev_set_promiscuity+0x3f8/0x590 net/core/dev.c:9189 netif_set_promiscuity+0x50/0xe0 net/core/dev.c:9201 dev_set_promiscuity+0x126/0x260 net/core/dev_api.c:286 packet_dev_mc net/packet/af_packet.c:3698 [inline] packet_dev_mclist_delete net/packet/af_packet.c:3722 [inline] packet_notifier+0x292/0xa60 net/packet/af_packet.c:4247 notifier_call_chain+0x1b3/0x3e0 kernel/notifier.c:85 call_netdevice_notifiers_extack net/core/dev.c:2214 [inline] call_netdevice_notifiers net/core/dev.c:2228 [inline] unregister_netdevice_many_notify+0x15d8/0x2330 net/core/dev.c:11972 rtnl_delete_link net/core/rtnetlink.c:3522 [inline] rtnl_dellink+0x488/0x710 net/core/rtnetlink.c:3564 rtnetlink_rcv_msg+0x7cf/0xb70 net/core/rtnetlink.c:6955 netlink_rcv_skb+0x219/0x490 net/netlink/af_netlink.c:2534 Llamar a `PACKET_ADD_MEMBERSHIP` en un dispositivo con bloqueo de operaciones puede activar el notificador `NETDEV_UNREGISTER`, lo que puede requerir la desactivaci\u00f3n del modo promiscuo o multimodo. Ambas operaciones requieren adquirir el bloqueo de la instancia netdev. Mueva la llamada a `packet_dev_mc` fuera de la secci\u00f3n cr\u00edtica de RCU. Las modificaciones de `mclist` (a\u00f1adir, eliminar, vaciar, anular registro) est\u00e1n protegidas por el RTNL, no por la RCU. La RCU solo protege `sklist` y sus `sks` asociados. La operaci\u00f3n retardada en la entrada `mclist` permanece dentro del RTNL.\"}],\"metrics\":{},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/2dd4781c5af99415ebbd2f7cc763feb109863c05\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/d8d85ef0a631df9127f202e6371bb33a0b589952\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}"
  }
}


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