CVE-2025-37798
Last modified
CVE-2025-37798 is a high-severity vulnerability rated 7.8/10 on the CVSS scale. 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().. EPSS estimates a 0.17% chance of exploitation in the next 30 days.
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().
Metrics
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Affected Software
| Vendor | Product | Versions | Update |
|---|---|---|---|
| Linux | Linux Kernel | >= 3.5, < 5.4.297 | — |
| Linux | Linux Kernel | >= 5.5, < 5.10.241 | — |
| Linux | Linux Kernel | >= 5.11, < 5.15.190 | — |
| Linux | Linux Kernel | >= 5.16, < 6.1.135 | — |
| Linux | Linux Kernel | >= 6.2, < 6.6.88 | — |
| Linux | Linux Kernel | >= 6.7, < 6.12.24 | — |
| Linux | Linux Kernel | >= 6.13, < 6.13.12 | — |
| Linux | Linux Kernel | >= 6.14, < 6.14.3 | — |
| Linux | Linux Kernel | 6.15 | Rc1 |
| Debian | Debian Linux | 11.0 | — |
References
- https://lists.debian.org/debian-lts-announce/2025/05/msg00045.htmlIssue Tracking, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2025/10/msg00007.htmlIssue Tracking, Third Party Advisory
Timeline
- Published
- Last Modified
- Status
- Analyzed
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