{"id":"CVE-2025-37798","title":"In the Linux kernel, the following vulnerability has been resolved:\n\ncodel: remove sch->q.qlen check before qdisc_tree_reduce_backlog()\n\nAfter making all ->qlen_notify() callbacks idempotent, now it is safe to\nremove the check of qlen!=0…","summary":"In the Linux kernel, the following vulnerability has been resolved:\n\ncodel: remove sch->q.qlen check before qdisc_tree_reduce_backlog()\n\nAfter making all ->qlen_notify() callbacks idempotent, now it is safe to\nremove the check of qlen!=0…","severity":"high","cvss":7.8,"cvssVector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","vendor":"linux","product":"linux_kernel","affected":["linux_kernel >= 3.5, < 5.4.297","linux_kernel >= 5.5, < 5.10.241","linux_kernel >= 5.11, < 5.15.190","linux_kernel >= 5.16, < 6.1.135","linux_kernel >= 6.2, < 6.6.88","linux_kernel >= 6.7, < 6.12.24","linux_kernel >= 6.13, < 6.13.12","linux_kernel >= 6.14, < 6.14.3","linux_kernel = 6.15","debian_linux = 11.0"],"patched":["linux_kernel 6.14.3"],"published":"2025-05-02","updated":"2026-10-15","sourceUpdated":"2026-10-15T22:18:18.057","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2025-37798","references":[{"url":"https://git.kernel.org/stable/c/2f9761a94bae33d26e6a81b31b36e7d776d93dc1","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/342debc12183b51773b3345ba267e9263bdfaaef","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/4d55144b12e742404bb3f8fee6038bafbf45619d","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/7a742a9506849d1c1aa71e36c89855ceddc7d58e","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/829c49b6b2ff45b043739168fd1245e4e1a91a30","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/a57fe60ef4cf96bfbb6b58397ec28bdb5a5c6b31","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/cc71a757da78dd4aa1b4a9b19cb011833730ccf2","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/e73c838c80dccb9e4f19becc11d9f3cb4a27d483","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/eda741fe155ddf5ecd2dd3bfbd4fc3c0c7dbb450","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://lists.debian.org/debian-lts-announce/2025/05/msg00045.html","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://lists.debian.org/debian-lts-announce/2025/10/msg00007.html","label":"af854a3a-2127-422b-91ae-364da2661108"}],"tags":["nvd","cve.org"],"epss":0.00228,"epssPercentile":0.13539,"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"total","timestamp":"2026-10-15T21:45:14.746981Z"},"ingestedAt":"2026-10-15T22:48:25.478Z","slug":"CVE-2025-37798","body":"## Overview\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\ncodel: remove sch->q.qlen check before qdisc_tree_reduce_backlog()\n\nAfter making all ->qlen_notify() callbacks idempotent, now it is safe to\nremove the check of qlen!=0 from both fq_codel_dequeue() and\ncodel_qdisc_dequeue().\n\n## Affected\n\n- `linux_kernel >= 3.5, < 5.4.297`\n- `linux_kernel >= 5.5, < 5.10.241`\n- `linux_kernel >= 5.11, < 5.15.190`\n- `linux_kernel >= 5.16, < 6.1.135`\n- `linux_kernel >= 6.2, < 6.6.88`\n- `linux_kernel >= 6.7, < 6.12.24`\n- `linux_kernel >= 6.13, < 6.13.12`\n- `linux_kernel >= 6.14, < 6.14.3`\n- `linux_kernel = 6.15`\n- `debian_linux = 11.0`\n\n## Remediation\n\nUpgrade past the affected range:\n\n- `linux_kernel 6.14.3`","depth":"twilight","depthScore":43,"depthScoreParts":{"impact":42.9,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}