Vulnerability Description
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().
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | >= 3.5, < 5.4.297 |
| Debian | Debian Linux | 11.0 |
References
- https://git.kernel.org/stable/c/2f9761a94bae33d26e6a81b31b36e7d776d93dc1Patch
- https://git.kernel.org/stable/c/342debc12183b51773b3345ba267e9263bdfaaefPatch
- https://git.kernel.org/stable/c/4d55144b12e742404bb3f8fee6038bafbf45619dPatch
- https://git.kernel.org/stable/c/7a742a9506849d1c1aa71e36c89855ceddc7d58ePatch
- https://git.kernel.org/stable/c/829c49b6b2ff45b043739168fd1245e4e1a91a30Patch
- https://git.kernel.org/stable/c/a57fe60ef4cf96bfbb6b58397ec28bdb5a5c6b31Patch
- https://git.kernel.org/stable/c/cc71a757da78dd4aa1b4a9b19cb011833730ccf2Patch
- https://git.kernel.org/stable/c/e73c838c80dccb9e4f19becc11d9f3cb4a27d483Patch
- https://git.kernel.org/stable/c/eda741fe155ddf5ecd2dd3bfbd4fc3c0c7dbb450Patch
- https://lists.debian.org/debian-lts-announce/2025/05/msg00045.htmlIssue TrackingThird Party Advisory
- https://lists.debian.org/debian-lts-announce/2025/10/msg00007.htmlIssue TrackingThird Party Advisory
FAQ
What is CVE-2025-37798?
CVE-2025-37798 is a vulnerability with a CVSS score of 7.8 (HIGH). 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 i...
How severe is CVE-2025-37798?
CVE-2025-37798 has been rated HIGH with a CVSS base score of 7.8/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2025-37798?
Check the references section above for vendor advisories and patch information. Affected products include: Linux Linux Kernel, Debian Debian Linux.