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CVE-2026-23105

net/sched: qfq: Use cl_is_active to determine whether class is active in qfq_rm_from_ag

Published
Last modified
published
Not listed in CISA KEV
Fix
Fixed in 5.10.249, 5.15.199, 6.1.162, 6.6.122, 6.12.68, and 1 more
None on Exploit-DB, Metasploit or GitHub
  • Exploitation: none
  • Automatable: no
  • Technical impact: total

Summary

In the Linux kernel, the following vulnerability has been resolved: net/sched: qfq: Use cl_is_active to determine whether class is active in qfq_rm_from_ag This is more of a preventive patch to make the code more consistent and to prevent possible exploits that employ child qlen manipulations on qfq. use cl_is_active instead of relying on the child qdisc's qlen to determine class activation.

Timeline

  1. CVE published
  2. CISA SSVC assessment

    Exploitation: none · Automatable: no · Technical impact: total

  3. Record last updated

Affected versions

  • Linux Linux

    From 462dbc9101acd38e92eda93c0726857517a24bbd · fixed in fac2c67bb2bb732eae4283e45fc338af7e08c254; From 462dbc9101acd38e92eda93c0726857517a24bbd · fixed in b8c24cf5268fb3bfb8d16324c3dbb985f698c835; From 462dbc9101acd38e92eda93c0726857517a24bbd · fixed in f27047abf7cac1b6f90c3ad60de21ef9f717c26d; From 462dbc9101acd38e92eda93c0726857517a24bbd · fixed in 93b8635974fb050c43d07e35e5edfe6e685ca28a; From 462dbc9101acd38e92eda93c0726857517a24bbd · fixed in abd9fc26ea577561a5ef6241a1b058755ffdad0c; From 462dbc9101acd38e92eda93c0726857517a24bbd · fixed in 77f1afd0bb4d5da95236f6114e6d0dfcde187ff6; From 462dbc9101acd38e92eda93c0726857517a24bbd · fixed in d837fbee92453fbb829f950c8e7cf76207d73f33

  • Linux Linux

    3.8

  • KernelLinux

    From 3.8.0 · fixed in 5.10.249; From 5.11.0 · fixed in 5.15.199; From 5.16.0 · fixed in 6.1.162; From 6.2.0 · fixed in 6.6.122; From 6.7.0 · fixed in 6.12.68; From 6.13.0 · fixed in 6.18.8

References 7

git.kernel.org