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CVE-2026-43392

In the Linux kernel, the following vulnerability has been resolved: sched_ext: Fix starvation of scx_enable() under fair-class saturation During scx_enable(), the READY -> ENABLED task switching loop changes the calling thread's sched_class from fair to ext. Since fair has higher priority than ext, saturating fair-class workloads can indefinitely starve the enable thread, hanging the system. This was introduced when the enable path switched from preempt_disable() to scx_bypass() which doesn't
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:033d68da83190003c92248d7d032607a0fe9ba3b502bbe87486906d6661d014e
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
1

Preserved source conflicts

No provider value was silently selected as the winner.

affected · 2 assertions

{"defaultStatus":"affected","product":"Linux","programFiles":["kernel/sched/ext.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"6.12"},{"lessThan":"6.12","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"6.12.*","status":"unaffected","version":"6.12.78","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.20","versionType":"semver"},{"lessThanOrEqual":"6.19.*","status":"unaffected","version":"6.19.9","versionType":"semver"},{"lessThanOrEq…

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:2c8a07f4873ef3ba051f0193c39d8fcae8f419f67ead27901bb12996dc2a8c64 · sha256:08793fb32ba25aaa… · /containers/cna/affected/1

{"defaultStatus":"unaffected","product":"Linux","programFiles":["kernel/sched/ext.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"e0b14bf06393be137d3efb6a3b7cd5b4b9810a6b","status":"affected","version":"8c2090c504e998c8f34ec870bae71dafcc96a6e0","versionType":"git"},{"lessThan":"c44198f25fdfecc0ec0fe366bf8a47fe17d8e229","status":"affected","version":"8c2090c504e998c8f34ec870bae71dafcc96a6e0","versionType":"git"},{"lessThan":"05ab9ec5dc24f234e0a2fecf3e6ff937c68f7d81","status":"affected","version":"8c2090c504e998c8f34ec870bae…

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:2c8a07f4873ef3ba051f0193c39d8fcae8f419f67ead27901bb12996dc2a8c64 · sha256:08793fb32ba25aaa… · /containers/cna/affected/0

Affected products and versions

2 source assertions
{"defaultStatus":"affected","product":"Linux","programFiles":["kernel/sched/ext.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"6.12"},{"lessThan":"6.12","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"6.12.*","status":"unaffected","version":"6.12.78","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.20","versionType":"semver"},{"lessThanOrEqual":"6.19.*","status":"unaffected","version":"6.19.9","versionType":"semver"},{"lessThanOrEq…
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:2c8a07f4873ef3ba051f0193c39d8fcae8f419f67ead27901bb12996dc2a8c64 · sha256:08793fb32ba25aaa… · /containers/cna/affected/1
{"defaultStatus":"unaffected","product":"Linux","programFiles":["kernel/sched/ext.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"e0b14bf06393be137d3efb6a3b7cd5b4b9810a6b","status":"affected","version":"8c2090c504e998c8f34ec870bae71dafcc96a6e0","versionType":"git"},{"lessThan":"c44198f25fdfecc0ec0fe366bf8a47fe17d8e229","status":"affected","version":"8c2090c504e998c8f34ec870bae71dafcc96a6e0","versionType":"git"},{"lessThan":"05ab9ec5dc24f234e0a2fecf3e6ff937c68f7d81","status":"affected","version":"8c2090c504e998c8f34ec870bae…
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:2c8a07f4873ef3ba051f0193c39d8fcae8f419f67ead27901bb12996dc2a8c64 · sha256:08793fb32ba25aaa… · /containers/cna/affected/0

Source references

4 source assertions
{"url":"https://git.kernel.org/stable/c/05ab9ec5dc24f234e0a2fecf3e6ff937c68f7d81"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:2c8a07f4873ef3ba051f0193c39d8fcae8f419f67ead27901bb12996dc2a8c64 · sha256:08793fb32ba25aaa… · /containers/cna/references/2
{"url":"https://git.kernel.org/stable/c/b06ccbabe2506fd70b9167a644978b049150224a"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:2c8a07f4873ef3ba051f0193c39d8fcae8f419f67ead27901bb12996dc2a8c64 · sha256:08793fb32ba25aaa… · /containers/cna/references/3
{"url":"https://git.kernel.org/stable/c/c44198f25fdfecc0ec0fe366bf8a47fe17d8e229"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:2c8a07f4873ef3ba051f0193c39d8fcae8f419f67ead27901bb12996dc2a8c64 · sha256:08793fb32ba25aaa… · /containers/cna/references/1
{"url":"https://git.kernel.org/stable/c/e0b14bf06393be137d3efb6a3b7cd5b4b9810a6b"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:2c8a07f4873ef3ba051f0193c39d8fcae8f419f67ead27901bb12996dc2a8c64 · sha256:08793fb32ba25aaa… · /containers/cna/references/0

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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