CVE-2022-49622 (GCVE-0-2022-49622)

Vulnerability from cvelistv5 – Published: 2025-02-26 02:23 – Updated: 2025-12-23 13:24
VLAI?
Title
netfilter: nf_tables: avoid skb access on nf_stolen
Summary
In the Linux kernel, the following vulnerability has been resolved: netfilter: nf_tables: avoid skb access on nf_stolen When verdict is NF_STOLEN, the skb might have been freed. When tracing is enabled, this can result in a use-after-free: 1. access to skb->nf_trace 2. access to skb->mark 3. computation of trace id 4. dump of packet payload To avoid 1, keep a cached copy of skb->nf_trace in the trace state struct. Refresh this copy whenever verdict is != STOLEN. Avoid 2 by skipping skb->mark access if verdict is STOLEN. 3 is avoided by precomputing the trace id. Only dump the packet when verdict is not "STOLEN".
Severity ?
7.8 (High)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CWE
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 5efa0fc6d7f7930b18801f07cefae8eeacd6ac02 , < 0016d5d46d7440729a3132f61a8da3bf7f84e2ba (git)
Affected: 5efa0fc6d7f7930b18801f07cefae8eeacd6ac02 , < e34b9ed96ce3b06c79bf884009b16961ca478f87 (git)
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    Linux Linux Affected: 4.10
Unaffected: 0 , < 4.10 (semver)
Unaffected: 5.18.13 , ≤ 5.18.* (semver)
Unaffected: 5.19 , ≤ * (original_commit_for_fix)
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  • Confirmed: The vulnerability has been validated from an analyst's perspective.
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