CVE-2026-99282: Linux kernel · net/sched: sch_teql: fix use-after-free on lower qdisc drop
Affects Linux kernelSource CVE Database V5
Not known to be exploited · fixed in fc55d92ae6a4b2e7d062cad6d4c67f6b061d9cde : patch Linux kernel soon.
Data as of 7 Nov 2026, 14:19 UTC
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
Disclosed: evidence found.
CVE published 7 Nov 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by 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
| Product | Affected | Fixed in |
|---|---|---|
| LinuxLinux | Affected
| Fixed in
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| LinuxLinux | Affected
| Fixed in
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| LinuxLinux | Affected
| Fixed in
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| LinuxLinux | Affected
| 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.