CVE-2025-37798 (GCVE-0-2025-37798)

Vulnerability from cvelistv5 – Published: 2025-05-02 14:16 – Updated: 2026-10-15 21:51
VLAI
Title
codel: remove sch->q.qlen check before qdisc_tree_reduce_backlog()
Summary
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().
Severity
7.8 (High)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-15 21:45 UTC
Assigner
Linux CNA under the mitre root
CNA scorecard D 53/100 over 7056 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 76e3cc126bb223013a6b9a0e2a51238d1ef2e409 , < 7a742a9506849d1c1aa71e36c89855ceddc7d58e (git)
Affected: 76e3cc126bb223013a6b9a0e2a51238d1ef2e409 , < cc71a757da78dd4aa1b4a9b19cb011833730ccf2 (git)
Affected: 76e3cc126bb223013a6b9a0e2a51238d1ef2e409 , < eda741fe155ddf5ecd2dd3bfbd4fc3c0c7dbb450 (git)
Affected: 76e3cc126bb223013a6b9a0e2a51238d1ef2e409 , < 829c49b6b2ff45b043739168fd1245e4e1a91a30 (git)
Affected: 76e3cc126bb223013a6b9a0e2a51238d1ef2e409 , < 2f9761a94bae33d26e6a81b31b36e7d776d93dc1 (git)
Affected: 76e3cc126bb223013a6b9a0e2a51238d1ef2e409 , < 4d55144b12e742404bb3f8fee6038bafbf45619d (git)
Affected: 76e3cc126bb223013a6b9a0e2a51238d1ef2e409 , < e73c838c80dccb9e4f19becc11d9f3cb4a27d483 (git)
Affected: 76e3cc126bb223013a6b9a0e2a51238d1ef2e409 , < a57fe60ef4cf96bfbb6b58397ec28bdb5a5c6b31 (git)
Affected: 76e3cc126bb223013a6b9a0e2a51238d1ef2e409 , < 342debc12183b51773b3345ba267e9263bdfaaef (git)
guessed Create a notification for this product.
Linux Linux Affected: 3.5
Unaffected: 0 , < 3.5 (semver)
Unaffected: 5.4.297 , ≤ 5.4.* (semver)
Unaffected: 5.10.241 , ≤ 5.10.* (semver)
Unaffected: 5.15.190 , ≤ 5.15.* (semver)
Unaffected: 6.1.135 , ≤ 6.1.* (semver)
Unaffected: 6.6.88 , ≤ 6.6.* (semver)
Unaffected: 6.12.24 , ≤ 6.12.* (semver)
Unaffected: 6.13.12 , ≤ 6.13.* (semver)
Unaffected: 6.14.3 , ≤ 6.14.* (semver)
Unaffected: 6.15 , ≤ * (original_commit_for_fix)
guessed Create a notification for this product.
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}



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Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
Vulnerability timeline

Sightings and recorded dates, grouped by day · UTC

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    Related by attack behaviour

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