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A use-after-free exists in the Linux Kernel in tc_new_tfilter that could allow a local attacker to gain privilege escalation. The exploit requires unprivileged user namespaces. We recommend upgrading…

High CVSS 7.8
CVECVE-2022-1055
First seen2026-07-29 15:15 UTC
Disclosed2022-03-29 15:15 UTC
Last updated2026-07-29 15:15 UTC
Channel statusauto

Summary

A use-after-free exists in the Linux Kernel in tc_new_tfilter that could allow a local attacker to gain privilege escalation. The exploit requires unprivileged user namespaces. We recommend upgrading past commit 04c2a47ffb13c29778e2a14e414ad4cb5a5db4b5

In-depth triage · Auto channel

No in-depth report has been generated yet (DR-003 v2 AI pipeline is under construction).

Affected products

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Lint boundary warnings (6)

The following non-blocking warnings were raised during the lint phase of this triage (e.g. reference URLs not yet on the allowlist). They do not affect entry usability and are disclosed for transparency (see DR-002).

  • REF_URL_NOT_ALLOWLISTED url not in allowlist: http://packetstormsecurity.com/files/167386/Kernel-Live-Patch-Security-Notice-LSN-0086-1.html
  • REF_URL_NOT_ALLOWLISTED url not in allowlist: https://kernel.dance/#04c2a47ffb13c29778e2a14e414ad4cb5a5db4b5
  • REF_URL_NOT_ALLOWLISTED url not in allowlist: https://syzkaller.appspot.com/bug?id=2212474c958978ab86525fe6832ac8102c309ffc
  • REF_URL_NOT_ALLOWLISTED url not in allowlist: http://packetstormsecurity.com/files/167386/Kernel-Live-Patch-Security-Notice-LSN-0086-1.html
  • REF_URL_NOT_ALLOWLISTED url not in allowlist: https://kernel.dance/#04c2a47ffb13c29778e2a14e414ad4cb5a5db4b5
  • REF_URL_NOT_ALLOWLISTED url not in allowlist: https://syzkaller.appspot.com/bug?id=2212474c958978ab86525fe6832ac8102c309ffc

Sources

  • NVD DATABASE

Original Links

Timeline

  1. nvd_ingest NVD