CVE-2022-49622

HighCVSS 7.8/10Last modified Jun 17, 2026

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".

Metrics

CVSS 3.1 7.8/10CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Weakness enumeration

CWE-416

Affected software

No affected versions have been published.

Timeline

Published
Feb 26, 2025
Last modified
Jun 17, 2026
NVD status
Analyzed

Related CVEs from 2022

CVE-2022-496237.1In the Linux kernel, the following vulnerability has been resolved: powerpc/xive/spapr: correct bitmap allocation size kasan detects accesCVE-2022-496245.5In the Linux kernel, the following vulnerability has been resolved: net: atlantic: remove aq_nic_deinit() when resume aq_nic_deinit() has CVE-2022-496255.5In the Linux kernel, the following vulnerability has been resolved: sfc: fix kernel panic when creating VF When creating VFs a kernel paniCVE-2022-496267.8In the Linux kernel, the following vulnerability has been resolved: sfc: fix use after free when disabling sriov Use after free is detecteCVE-2022-496275.5In the Linux kernel, the following vulnerability has been resolved: ima: Fix potential memory leak in ima_init_crypto() On failure to alloCVE-2022-496285.5In the Linux kernel, the following vulnerability has been resolved: net: stmmac: fix leaks in probe These two error paths should clean up CVE-2022-496294.7In the Linux kernel, the following vulnerability has been resolved: nexthop: Fix data-races around nexthop_compat_mode. While reading nextCVE-2022-49639.8A vulnerability was found in Folio Spring Module Core up to 1.1.5. It has been rated as critical. Affected by this issue is the function droCVE-2022-496304.7In the Linux kernel, the following vulnerability has been resolved: tcp: Fix a data-race around sysctl_tcp_ecn_fallback. While reading sysCVE-2022-496314.7In the Linux kernel, the following vulnerability has been resolved: raw: Fix a data-race around sysctl_raw_l3mdev_accept. While reading syCVE-2022-496324.7In the Linux kernel, the following vulnerability has been resolved: icmp: Fix a data-race around sysctl_icmp_errors_use_inbound_ifaddr. WhCVE-2022-496334.7In the Linux kernel, the following vulnerability has been resolved: icmp: Fix data-races around sysctl_icmp_echo_enable_probe. While readi
CVE-2022-49622: High severity, CVSS 7.8 | Vulnix