Answer in brief
CVE-2025-37798 records a Unknown severity 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.
Answer in brief
CVE-2025-37798 records a Unknown severity 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.
A CVSS score is not reported in the current record. 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.
| 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
Aug 5, 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.
A CVSS score is not reported in the current record. 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.
| 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
Aug 5, 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.