# CVE-2022-49622: linux: In the Linux kernel, the following vulnerability has been resolved:  netfilter: nf_tables: avoid skb access on nf_sto...

CVE-2022-49622 is fixed in linux on 1 platform, first by DEBIAN-CVE-2022-49622, released February 26, 2025. It is not reported as exploited. Patch Radar priority: High.

- Web page: https://patchblox.com/security/cve/CVE-2022-49622
- Priority: High
- CVSS: 7.8 (high)
- EPSS: 0.0027
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Feb 26, 2025

## Description

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".

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | linux Debian 12.15 (bookworm) | 5.18.14-1 | [DEBIAN-CVE-2022-49622](https://patchblox.com/security/data/fix/linux/debian-cve-2022-49622.md) | Feb 26, 2025 |
| Linux | linux Debian 13.5 (trixie) | 5.18.14-1 | [DEBIAN-CVE-2022-49622](https://patchblox.com/security/data/fix/linux/debian-cve-2022-49622.md) | Feb 26, 2025 |
| Linux | linux Debian 14 | 5.18.14-1 | [DEBIAN-CVE-2022-49622](https://patchblox.com/security/data/fix/linux/debian-cve-2022-49622.md) | Feb 26, 2025 |

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Data as of 2026-11-08T13:06:02Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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