CVE-2025-37798
codel: remove sch->q.qlen check before qdisc_tree_reduce_backlog()
Vexday Risk Score
3Low
SSVC decision (CISA)
Track
No exploitation signal → monitor
CVSS —EPSS 0.2%KEV nãoPoC —Nuclei —Metasploit —Patch —
Lifecycle
02 May 2025Published on NVD
Recommendation: Monitor — no exploitation signal at the moment.
In the Linux kernel, the following vulnerability has been resolved:
codel: remove sch->q.qlen check before qdisc_tree_reduce_backlog()
After making all ->qlen_notify() callbacks idempotent, now it is safe to
remove the check of qlen!=0 from both fq_codel_dequeue() and
codel_qdisc_dequeue().
Affected products
Linux · LinuxReferences
https://git.kernel.org/stable/c/2f9761a94bae33d26e6a81b31b36e7d776d93dc1https://git.kernel.org/stable/c/342debc12183b51773b3345ba267e9263bdfaaefhttps://git.kernel.org/stable/c/4d55144b12e742404bb3f8fee6038bafbf45619dhttps://git.kernel.org/stable/c/7a742a9506849d1c1aa71e36c89855ceddc7d58ehttps://git.kernel.org/stable/c/829c49b6b2ff45b043739168fd1245e4e1a91a30https://git.kernel.org/stable/c/a57fe60ef4cf96bfbb6b58397ec28bdb5a5c6b31https://git.kernel.org/stable/c/cc71a757da78dd4aa1b4a9b19cb011833730ccf2https://git.kernel.org/stable/c/e73c838c80dccb9e4f19becc11d9f3cb4a27d483https://git.kernel.org/stable/c/eda741fe155ddf5ecd2dd3bfbd4fc3c0c7dbb450https://lists.debian.org/debian-lts-announce/2025/05/msg00045.htmlhttps://lists.debian.org/debian-lts-announce/2025/10/msg00007.html