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CVE-2026-22976

In the Linux kernel, the following vulnerability has been resolved: net/sched: sch_qfq: Fix NULL deref when deactivating inactive aggregate in qfq_reset `qfq_class->leaf_qdisc->q.qlen > 0` does not imply that the class itself is active. Two qfq_class objects may point to the same leaf_qdisc. This happens when: 1. one QFQ qdisc is attached to the dev as the root qdisc, and 2. another QFQ qdisc is temporarily referenced (e.g., via qdisc_get() / qdisc_put()) and is pending to be destroyed, as
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:d78e91053e9c593a0650ec023f99174e07693a5f8250c4c5dc4ec429699a76de
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
1

Preserved source conflicts

No provider value was silently selected as the winner.

affected · 3 assertions

{"defaultStatus":"affected","product":"Linux","programFiles":["net/sched/sch_qfq.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"3.0"},{"lessThan":"3.0","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"5.10.*","status":"unaffected","version":"5.10.248","versionType":"semver"},{"lessThanOrEqual":"5.15.*","status":"unaffected","version":"5.15.198","versionType":"semver"},{"lessThanOrEqual":"6.1.*","status":"unaffected","version":"6.1.161","versionType":"semver"},{"lessThanOrE…

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:f20299304c3aa73df8ad586da45b69f982c51b744dadf05556bf0f6b3648a394 · sha256:6ec3eb38355d40f2… · /containers/cna/affected/1

{"defaultStatus":"unaffected","product":"Linux","programFiles":["net/sched/sch_qfq.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"6116a83ec167d3ab1390cded854d237481f41b63","status":"affected","version":"0545a3037773512d3448557ba048cebb73b3e4af","versionType":"git"},{"lessThan":"0809c4bc06c9c961222df29f2eccfd449304056f","status":"affected","version":"0545a3037773512d3448557ba048cebb73b3e4af","versionType":"git"},{"lessThan":"cdb24200b043438a144df501f1ebbd926bb1a2c7","status":"affected","version":"0545a3037773512d3448557ba0…

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:f20299304c3aa73df8ad586da45b69f982c51b744dadf05556bf0f6b3648a394 · sha256:6ec3eb38355d40f2… · /containers/cna/affected/0

{"defaultStatus":"unknown","product":"RUGGEDCOM RST2428P","vendor":"Siemens","versions":[{"lessThan":"V4.0","status":"affected","version":"0","versionType":"custom"}]}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:f20299304c3aa73df8ad586da45b69f982c51b744dadf05556bf0f6b3648a394 · sha256:6ec3eb38355d40f2… · /containers/adp/0/affected/0

Affected products and versions

3 source assertions
{"defaultStatus":"affected","product":"Linux","programFiles":["net/sched/sch_qfq.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"3.0"},{"lessThan":"3.0","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"5.10.*","status":"unaffected","version":"5.10.248","versionType":"semver"},{"lessThanOrEqual":"5.15.*","status":"unaffected","version":"5.15.198","versionType":"semver"},{"lessThanOrEqual":"6.1.*","status":"unaffected","version":"6.1.161","versionType":"semver"},{"lessThanOrE…
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:f20299304c3aa73df8ad586da45b69f982c51b744dadf05556bf0f6b3648a394 · sha256:6ec3eb38355d40f2… · /containers/cna/affected/1
{"defaultStatus":"unaffected","product":"Linux","programFiles":["net/sched/sch_qfq.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"6116a83ec167d3ab1390cded854d237481f41b63","status":"affected","version":"0545a3037773512d3448557ba048cebb73b3e4af","versionType":"git"},{"lessThan":"0809c4bc06c9c961222df29f2eccfd449304056f","status":"affected","version":"0545a3037773512d3448557ba048cebb73b3e4af","versionType":"git"},{"lessThan":"cdb24200b043438a144df501f1ebbd926bb1a2c7","status":"affected","version":"0545a3037773512d3448557ba0…
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:f20299304c3aa73df8ad586da45b69f982c51b744dadf05556bf0f6b3648a394 · sha256:6ec3eb38355d40f2… · /containers/cna/affected/0
{"defaultStatus":"unknown","product":"RUGGEDCOM RST2428P","vendor":"Siemens","versions":[{"lessThan":"V4.0","status":"affected","version":"0","versionType":"custom"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:f20299304c3aa73df8ad586da45b69f982c51b744dadf05556bf0f6b3648a394 · sha256:6ec3eb38355d40f2… · /containers/adp/0/affected/0

Source references

8 source assertions
{"url":"https://cert-portal.siemens.com/productcert/html/ssa-253495.html"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:f20299304c3aa73df8ad586da45b69f982c51b744dadf05556bf0f6b3648a394 · sha256:6ec3eb38355d40f2… · /containers/adp/0/references/0
{"url":"https://git.kernel.org/stable/c/0809c4bc06c9c961222df29f2eccfd449304056f"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:f20299304c3aa73df8ad586da45b69f982c51b744dadf05556bf0f6b3648a394 · sha256:6ec3eb38355d40f2… · /containers/cna/references/1
{"url":"https://git.kernel.org/stable/c/11bf9134613f6c71fc0ff36c5d8d33856f6ae3bb"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:f20299304c3aa73df8ad586da45b69f982c51b744dadf05556bf0f6b3648a394 · sha256:6ec3eb38355d40f2… · /containers/cna/references/3
{"url":"https://git.kernel.org/stable/c/43497313d0da3e12b5cfcd97aa17bf48ee663f95"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:f20299304c3aa73df8ad586da45b69f982c51b744dadf05556bf0f6b3648a394 · sha256:6ec3eb38355d40f2… · /containers/cna/references/4
{"url":"https://git.kernel.org/stable/c/51ffd447bc37bf1a5776b85523f51d2bc69977f6"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:f20299304c3aa73df8ad586da45b69f982c51b744dadf05556bf0f6b3648a394 · sha256:6ec3eb38355d40f2… · /containers/cna/references/5
{"url":"https://git.kernel.org/stable/c/6116a83ec167d3ab1390cded854d237481f41b63"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:f20299304c3aa73df8ad586da45b69f982c51b744dadf05556bf0f6b3648a394 · sha256:6ec3eb38355d40f2… · /containers/cna/references/0
{"url":"https://git.kernel.org/stable/c/c1d73b1480235731e35c81df70b08f4714a7d095"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:f20299304c3aa73df8ad586da45b69f982c51b744dadf05556bf0f6b3648a394 · sha256:6ec3eb38355d40f2… · /containers/cna/references/6
{"url":"https://git.kernel.org/stable/c/cdb24200b043438a144df501f1ebbd926bb1a2c7"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:f20299304c3aa73df8ad586da45b69f982c51b744dadf05556bf0f6b3648a394 · sha256:6ec3eb38355d40f2… · /containers/cna/references/2

Attribution and limitations

  • CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →

Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.

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