Answer in brief
CVE-2025-37798 records a High severity (CVSS 7.8) vulnerability in codel: remove sch->q.qlen check before qdisc_tree_reduce_backlog(). The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
CVSS is 7.8. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
| Product | Affected versions | Fixed versions |
|---|---|---|
| cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:* | Not reported | Not reported |
| cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | Not reported | Not reported |
| cpe:2.3:o:linux:linux_kernel:6.15:rc1:*:*:*:*:*:* | Not reported | Not reported |
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=76e3cc126bb223013a6b9a0e2a51238d1ef2e409 <7a742a9506849d1c1aa71e36c89855ceddc7d58e || >=76e3cc126bb223013a6b9a0e2a51238d1ef2e409 <cc71a757da78dd4aa1b4a9b19cb011833730ccf2 || >=76e3cc126bb223013a6b9a0e2a51238d1ef2e409 <eda741fe155ddf5ecd2dd3bfbd4fc3c0c7dbb450 || >=76e3cc126bb223013a6b9a0e2a51238d1ef2e409 <829c49b6b2ff45b043739168fd1245e4e1a91a30 || >=76e3cc126bb223013a6b9a0e2a51238d1ef2e409 <2f9761a94bae33d26e6a81b31b36e7d776d93dc1 || >=76e3cc126bb223013a6b9a0e2a51238d1ef2e409 <4d55144b12e742404bb3f8fee6038bafbf45619d || >=76e3cc126bb223013a6b9a0e2a51238d1ef2e409 <e73c838c80dccb9e4f19becc11d9f3cb4a27d483 || >=76e3cc126bb223013a6b9a0e2a51238d1ef2e409 <a57fe60ef4cf96bfbb6b58397ec28bdb5a5c6b31 || >=76e3cc126bb223013a6b9a0e2a51238d1ef2e409 <342debc12183b51773b3345ba267e9263bdfaaef | 7a742a9506849d1c1aa71e36c89855ceddc7d58e, cc71a757da78dd4aa1b4a9b19cb011833730ccf2, eda741fe155ddf5ecd2dd3bfbd4fc3c0c7dbb450, 829c49b6b2ff45b043739168fd1245e4e1a91a30, 2f9761a94bae33d26e6a81b31b36e7d776d93dc1, 4d55144b12e742404bb3f8fee6038bafbf45619d, e73c838c80dccb9e4f19becc11d9f3cb4a27d483, a57fe60ef4cf96bfbb6b58397ec28bdb5a5c6b31, 342debc12183b51773b3345ba267e9263bdfaaef |
| Linux/Linuxgeneric | 3.5 | Not reported |
Published upstream
May 2, 2025
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Oct 15, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 5, 2026
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().
Quoted source text, attributed separately from HOL analysis.