CVE-2022-3586

Summary

A flaw was found in the Linux kernel’s networking code. A use-after-free was found in the way the sch_sfb enqueue function used the socket buffer (SKB) cb field after the same SKB had been enqueued (and freed) into a child qdisc. This flaw allows a local, unprivileged user to crash the system, causing a denial of service.

Affected Software

Weaknesses

• CWE-416: CWE-416

ADP Enrichment

CVE Program Container

Additional References

• https://github.com/torvalds/linux/commit/9efd23297cca
• https://www.zerodayinitiative.com/advisories/upcoming/
• https://lists.debian.org/debian-lts-announce/2022/11/msg00001.html

CISA ADP Vulnrichment

• SSVC:
• Exploitation: none
  • Automatable: no
  • Technical Impact: partial

References

• https://github.com/torvalds/linux/commit/9efd23297cca
• https://www.zerodayinitiative.com/advisories/upcoming/
• https://lists.debian.org/debian-lts-announce/2022/11/msg00001.html

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