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gsd-2021-47250
Vulnerability from gsd
Modified
2024-04-11 05:05
Details
** RESERVED ** This candidate has been reserved by an organization or individual that will use it when announcing a new security problem. When the candidate has been publicized, the details for this candidate will be provided.
Aliases
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CVE-2021-47250 (GCVE-0-2021-47250)
Vulnerability from cvelistv5
Published
2024-05-21 14:19
Modified
2025-05-04 07:07
Severity ?
VLAI Severity ?
EPSS score ?
Summary
In the Linux kernel, the following vulnerability has been resolved:
net: ipv4: fix memory leak in netlbl_cipsov4_add_std
Reported by syzkaller:
BUG: memory leak
unreferenced object 0xffff888105df7000 (size 64):
comm "syz-executor842", pid 360, jiffies 4294824824 (age 22.546s)
hex dump (first 32 bytes):
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
backtrace:
[<00000000e67ed558>] kmalloc include/linux/slab.h:590 [inline]
[<00000000e67ed558>] kzalloc include/linux/slab.h:720 [inline]
[<00000000e67ed558>] netlbl_cipsov4_add_std net/netlabel/netlabel_cipso_v4.c:145 [inline]
[<00000000e67ed558>] netlbl_cipsov4_add+0x390/0x2340 net/netlabel/netlabel_cipso_v4.c:416
[<0000000006040154>] genl_family_rcv_msg_doit.isra.0+0x20e/0x320 net/netlink/genetlink.c:739
[<00000000204d7a1c>] genl_family_rcv_msg net/netlink/genetlink.c:783 [inline]
[<00000000204d7a1c>] genl_rcv_msg+0x2bf/0x4f0 net/netlink/genetlink.c:800
[<00000000c0d6a995>] netlink_rcv_skb+0x134/0x3d0 net/netlink/af_netlink.c:2504
[<00000000d78b9d2c>] genl_rcv+0x24/0x40 net/netlink/genetlink.c:811
[<000000009733081b>] netlink_unicast_kernel net/netlink/af_netlink.c:1314 [inline]
[<000000009733081b>] netlink_unicast+0x4a0/0x6a0 net/netlink/af_netlink.c:1340
[<00000000d5fd43b8>] netlink_sendmsg+0x789/0xc70 net/netlink/af_netlink.c:1929
[<000000000a2d1e40>] sock_sendmsg_nosec net/socket.c:654 [inline]
[<000000000a2d1e40>] sock_sendmsg+0x139/0x170 net/socket.c:674
[<00000000321d1969>] ____sys_sendmsg+0x658/0x7d0 net/socket.c:2350
[<00000000964e16bc>] ___sys_sendmsg+0xf8/0x170 net/socket.c:2404
[<000000001615e288>] __sys_sendmsg+0xd3/0x190 net/socket.c:2433
[<000000004ee8b6a5>] do_syscall_64+0x37/0x90 arch/x86/entry/common.c:47
[<00000000171c7cee>] entry_SYSCALL_64_after_hwframe+0x44/0xae
The memory of doi_def->map.std pointing is allocated in
netlbl_cipsov4_add_std, but no place has freed it. It should be
freed in cipso_v4_doi_free which frees the cipso DOI resource.
References
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| ► | Linux | Linux |
Version: 96cb8e3313c7a12e026c1ed510522ae6f6023875 Version: 96cb8e3313c7a12e026c1ed510522ae6f6023875 Version: 96cb8e3313c7a12e026c1ed510522ae6f6023875 Version: 96cb8e3313c7a12e026c1ed510522ae6f6023875 Version: 96cb8e3313c7a12e026c1ed510522ae6f6023875 Version: 96cb8e3313c7a12e026c1ed510522ae6f6023875 Version: 96cb8e3313c7a12e026c1ed510522ae6f6023875 Version: 96cb8e3313c7a12e026c1ed510522ae6f6023875 |
|
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"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: ipv4: fix memory leak in netlbl_cipsov4_add_std\n\nReported by syzkaller:\nBUG: memory leak\nunreferenced object 0xffff888105df7000 (size 64):\ncomm \"syz-executor842\", pid 360, jiffies 4294824824 (age 22.546s)\nhex dump (first 32 bytes):\n00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................\n00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................\nbacktrace:\n[\u003c00000000e67ed558\u003e] kmalloc include/linux/slab.h:590 [inline]\n[\u003c00000000e67ed558\u003e] kzalloc include/linux/slab.h:720 [inline]\n[\u003c00000000e67ed558\u003e] netlbl_cipsov4_add_std net/netlabel/netlabel_cipso_v4.c:145 [inline]\n[\u003c00000000e67ed558\u003e] netlbl_cipsov4_add+0x390/0x2340 net/netlabel/netlabel_cipso_v4.c:416\n[\u003c0000000006040154\u003e] genl_family_rcv_msg_doit.isra.0+0x20e/0x320 net/netlink/genetlink.c:739\n[\u003c00000000204d7a1c\u003e] genl_family_rcv_msg net/netlink/genetlink.c:783 [inline]\n[\u003c00000000204d7a1c\u003e] genl_rcv_msg+0x2bf/0x4f0 net/netlink/genetlink.c:800\n[\u003c00000000c0d6a995\u003e] netlink_rcv_skb+0x134/0x3d0 net/netlink/af_netlink.c:2504\n[\u003c00000000d78b9d2c\u003e] genl_rcv+0x24/0x40 net/netlink/genetlink.c:811\n[\u003c000000009733081b\u003e] netlink_unicast_kernel net/netlink/af_netlink.c:1314 [inline]\n[\u003c000000009733081b\u003e] netlink_unicast+0x4a0/0x6a0 net/netlink/af_netlink.c:1340\n[\u003c00000000d5fd43b8\u003e] netlink_sendmsg+0x789/0xc70 net/netlink/af_netlink.c:1929\n[\u003c000000000a2d1e40\u003e] sock_sendmsg_nosec net/socket.c:654 [inline]\n[\u003c000000000a2d1e40\u003e] sock_sendmsg+0x139/0x170 net/socket.c:674\n[\u003c00000000321d1969\u003e] ____sys_sendmsg+0x658/0x7d0 net/socket.c:2350\n[\u003c00000000964e16bc\u003e] ___sys_sendmsg+0xf8/0x170 net/socket.c:2404\n[\u003c000000001615e288\u003e] __sys_sendmsg+0xd3/0x190 net/socket.c:2433\n[\u003c000000004ee8b6a5\u003e] do_syscall_64+0x37/0x90 arch/x86/entry/common.c:47\n[\u003c00000000171c7cee\u003e] entry_SYSCALL_64_after_hwframe+0x44/0xae\n\nThe memory of doi_def-\u003emap.std pointing is allocated in\nnetlbl_cipsov4_add_std, but no place has freed it. It should be\nfreed in cipso_v4_doi_free which frees the cipso DOI resource."
}
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"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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"datePublished": "2024-05-21T14:19:46.886Z",
"dateReserved": "2024-04-10T18:59:19.537Z",
"dateUpdated": "2025-05-04T07:07:08.871Z",
"state": "PUBLISHED"
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}
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Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.
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