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VulnerabilityPublished

CVE-2026-99282: Linux kernel · net/sched: sch_teql: fix use-after-free on lower qdisc drop

Affects Linux kernelSource CVE Database V5

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Not known to be exploited · fixed in fc55d92ae6a4b2e7d062cad6d4c67f6b061d9cde : patch Linux kernel soon.

Data as of 7 Nov 2026, 14:19 UTC

Severity
High

Rated High by Threat Radar's AI analysis · CVSS not yet scored by NVD

Thin evidence

One scorer or none
Patch
Available – fixed in fc55d92ae6a4b2e7d062cad6d4c67f6b061d9cde, 2702ae318630787c640ec0d0403ffd9d95c43e9e, 782d6bb8f9b8e9d8591181662222bf74cd3ecf79

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 7 Nov 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 7 Nov 2026.

What to do

Upgrade Linux kernel to fc55d92ae6a4b2e7d062cad6d4c67f6b061d9cde, 2702ae318630787c640ec0d0403ffd9d95c43e9e or 782d6bb8f9b8e9d8591181662222bf74cd3ecf79.

Affected software

ProductAffectedFixed in
LinuxLinuxAffected
  • ≥ 572a9d7b6fc7f20f573664063324c086be310c42, < fc55d92ae6a4b2e7d062cad6d4c67f6b061d9cde
Fixed in
  • fc55d92ae6a4b2e7d062cad6d4c67f6b061d9cde
LinuxLinuxAffected
  • ≥ 572a9d7b6fc7f20f573664063324c086be310c42, < 2702ae318630787c640ec0d0403ffd9d95c43e9e
Fixed in
  • 2702ae318630787c640ec0d0403ffd9d95c43e9e
LinuxLinuxAffected
  • ≥ 572a9d7b6fc7f20f573664063324c086be310c42, < 782d6bb8f9b8e9d8591181662222bf74cd3ecf79
Fixed in
  • 782d6bb8f9b8e9d8591181662222bf74cd3ecf79
LinuxLinuxAffected
  • =2.6.33
Fixed in–

AI-suggested

A fix is available and has been applied in specific Linux kernel commits. Users and administrators should update to a Linux kernel version that includes these fixes. Since this is a kernel-level vulnerability, applying the official patches or upgrading the kernel is the recommended mitigation.

Description

A use-after-free vulnerability was identified and fixed in the Linux kernel's net/sched sch_teql module. The flaw occurs when the teql_master_xmit() function incorrectly handles the return value of a slave's ndo_start_xmit(), leading to a use-after-free condition if the lower qdisc drops a packet. This issue affects Linux kernel version 2.6.33. The fix involves properly testing for packet consumption to avoid accessing freed memory.

References

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