CVE-2022-49622

high

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 mi…

Vendor / product: Linux — linux kernel

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".

CVSS

7.8

7.8 (CVSS v3.1)

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Severity source: NVD CVSS v3.1 (416baaa9-dc9f-4396-8d5f-8c081fb06d67)

Timeline (UTC)

Published: 2025-02-26 07:01

Modified: 2026-10-30 13:17

NVD status: Modified

Last synced 1 day ago

Verified against the source API 2026-11-03 07:33 UTC

Exploitation

Not listed in CISA KEV (as of last catalog sync)

Absence from KEV does not mean a CVE is not exploited. Exploitation status: unknown (no authoritative evidence in our sources).

Affected products

linux / linux_kernel <5.18.13, 5.19

Weakness classification (CWE)

CWE-416

Source: NVD / CISA. “NVD-CWE-Other” and “NVD-CWE-noinfo” mean NVD could not assign a specific weakness.

Mitigation & advisories

Patch / mitigation: https://git.kernel.org/stable/c/0016d5d46d7440729a3132f61a8da3bf7f84e2ba

Patch / mitigation: https://git.kernel.org/stable/c/e34b9ed96ce3b06c79bf884009b16961ca478f87

References

https://git.kernel.org/stable/c/0016d5d46d7440729a3132f61a8da3bf7f84e2ba 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/348218a4601e93de4d1e9fab29837cf656e4bf99 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/453a67af8bd77463b33cb0336dd7f2341e332d29 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/e34b9ed96ce3b06c79bf884009b16961ca478f87 416baaa9-dc9f-4396-8d5f-8c081fb06d67

Data sources

NVD CVE API 2.0 — fetched 2026-11-03 07:33 UTC · record ↗

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CVE-2022-49622

Affected products

Weakness classification (CWE)

Mitigation & advisories

References

Data sources

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