CVE-2022-49205 (GCVE-0-2022-49205)
Vulnerability from cvelistv5
Published
2025-02-26 01:55
Modified
2025-05-04 08:32
Severity ?
VLAI Severity ?
EPSS score ?
Summary
In the Linux kernel, the following vulnerability has been resolved:
bpf, sockmap: Fix double uncharge the mem of sk_msg
If tcp_bpf_sendmsg is running during a tear down operation, psock may be
freed.
tcp_bpf_sendmsg()
tcp_bpf_send_verdict()
sk_msg_return()
tcp_bpf_sendmsg_redir()
unlikely(!psock))
sk_msg_free()
The mem of msg has been uncharged in tcp_bpf_send_verdict() by
sk_msg_return(), and would be uncharged by sk_msg_free() again. When psock
is null, we can simply returning an error code, this would then trigger
the sk_msg_free_nocharge in the error path of __SK_REDIRECT and would have
the side effect of throwing an error up to user space. This would be a
slight change in behavior from user side but would look the same as an
error if the redirect on the socket threw an error.
This issue can cause the following info:
WARNING: CPU: 0 PID: 2136 at net/ipv4/af_inet.c:155 inet_sock_destruct+0x13c/0x260
Call Trace:
<TASK>
__sk_destruct+0x24/0x1f0
sk_psock_destroy+0x19b/0x1c0
process_one_work+0x1b3/0x3c0
worker_thread+0x30/0x350
? process_one_work+0x3c0/0x3c0
kthread+0xe6/0x110
? kthread_complete_and_exit+0x20/0x20
ret_from_fork+0x22/0x30
</TASK>
References
Impacted products
| Vendor | Product | Version | |||||||
|---|---|---|---|---|---|---|---|---|---|
| ▼ | Linux | Linux |
Version: 604326b41a6fb9b4a78b6179335decee0365cd8c Version: 604326b41a6fb9b4a78b6179335decee0365cd8c Version: 604326b41a6fb9b4a78b6179335decee0365cd8c Version: 604326b41a6fb9b4a78b6179335decee0365cd8c Version: 604326b41a6fb9b4a78b6179335decee0365cd8c Version: 604326b41a6fb9b4a78b6179335decee0365cd8c |
||||||
|
|||||||||
{
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"status": "unaffected",
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"versionType": "original_commit_for_fix"
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]
}
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"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nbpf, sockmap: Fix double uncharge the mem of sk_msg\n\nIf tcp_bpf_sendmsg is running during a tear down operation, psock may be\nfreed.\n\ntcp_bpf_sendmsg()\n tcp_bpf_send_verdict()\n sk_msg_return()\n tcp_bpf_sendmsg_redir()\n unlikely(!psock))\n sk_msg_free()\n\nThe mem of msg has been uncharged in tcp_bpf_send_verdict() by\nsk_msg_return(), and would be uncharged by sk_msg_free() again. When psock\nis null, we can simply returning an error code, this would then trigger\nthe sk_msg_free_nocharge in the error path of __SK_REDIRECT and would have\nthe side effect of throwing an error up to user space. This would be a\nslight change in behavior from user side but would look the same as an\nerror if the redirect on the socket threw an error.\n\nThis issue can cause the following info:\nWARNING: CPU: 0 PID: 2136 at net/ipv4/af_inet.c:155 inet_sock_destruct+0x13c/0x260\nCall Trace:\n \u003cTASK\u003e\n __sk_destruct+0x24/0x1f0\n sk_psock_destroy+0x19b/0x1c0\n process_one_work+0x1b3/0x3c0\n worker_thread+0x30/0x350\n ? process_one_work+0x3c0/0x3c0\n kthread+0xe6/0x110\n ? kthread_complete_and_exit+0x20/0x20\n ret_from_fork+0x22/0x30\n \u003c/TASK\u003e"
}
],
"providerMetadata": {
"dateUpdated": "2025-05-04T08:32:19.084Z",
"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"shortName": "Linux"
},
"references": [
{
"url": "https://git.kernel.org/stable/c/94c6ac22abcdede72bfaa0f4c22fb370891f4002"
},
{
"url": "https://git.kernel.org/stable/c/cd84ea3920aef936c559b63099ef0013ce6b2325"
},
{
"url": "https://git.kernel.org/stable/c/cb6f141ae705af0101e819065a79e6d029f6e393"
},
{
"url": "https://git.kernel.org/stable/c/223f3c51ab163852dd4819d357dcf33039929434"
},
{
"url": "https://git.kernel.org/stable/c/ac3ecb7760c750c8e4fc09c719241d8e6e88028c"
},
{
"url": "https://git.kernel.org/stable/c/2486ab434b2c2a14e9237296db00b1e1b7ae3273"
}
],
"title": "bpf, sockmap: Fix double uncharge the mem of sk_msg",
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"cveId": "CVE-2022-49205",
"datePublished": "2025-02-26T01:55:45.177Z",
"dateReserved": "2025-02-26T01:49:39.291Z",
"dateUpdated": "2025-05-04T08:32:19.084Z",
"state": "PUBLISHED"
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