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CVE-2026-43331

In the Linux kernel, the following vulnerability has been resolved: x86/kexec: Disable KCOV instrumentation after load_segments() The load_segments() function changes segment registers, invalidating GS base (which KCOV relies on for per-cpu data). When CONFIG_KCOV is enabled, any subsequent instrumented C code call (e.g. native_gdt_invalidate()) begins crashing the kernel in an endless loop. To reproduce the problem, it's sufficient to do kexec on a KCOV-instrumented kernel: $ kexec -l /bo
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:0b4862e2ab5c2ee32ef4bd9a112c4a0d703b1c61e526a37090d14fd75d10086b
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":["arch/x86/kernel/Makefile","arch/x86/mm/Makefile"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"6.6"},{"lessThan":"6.6","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"6.6.*","status":"unaffected","version":"6.6.143","versionType":"semver"},{"lessThanOrEqual":"6.12.*","status":"unaffected","version":"6.12.93","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.22","versionTyp…

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:aa9b5de5def148c1e3470d77a50606d07b2acaa3d446ccd9495d460afeb2aed8 · sha256:066b095ab3e0900d… · /containers/cna/affected/1

{"defaultStatus":"unaffected","product":"Linux","programFiles":["arch/x86/kernel/Makefile","arch/x86/mm/Makefile"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"0e96cd314c0d819c1635d68125a4d77852c2162e","status":"affected","version":"0d345996e4cb573f8cc81d49b3ee9a7fd2035bef","versionType":"git"},{"lessThan":"593d67032544b9271094fc9b43e437e017cb2b2f","status":"affected","version":"0d345996e4cb573f8cc81d49b3ee9a7fd2035bef","versionType":"git"},{"lessThan":"1e3e98596c2769721ade0418434852fb3af4849a","status":"affected","version"…

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:aa9b5de5def148c1e3470d77a50606d07b2acaa3d446ccd9495d460afeb2aed8 · sha256:066b095ab3e0900d… · /containers/cna/affected/0

Affected products and versions

2 source assertions
{"defaultStatus":"affected","product":"Linux","programFiles":["arch/x86/kernel/Makefile","arch/x86/mm/Makefile"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"6.6"},{"lessThan":"6.6","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"6.6.*","status":"unaffected","version":"6.6.143","versionType":"semver"},{"lessThanOrEqual":"6.12.*","status":"unaffected","version":"6.12.93","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.22","versionTyp…
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:aa9b5de5def148c1e3470d77a50606d07b2acaa3d446ccd9495d460afeb2aed8 · sha256:066b095ab3e0900d… · /containers/cna/affected/1
{"defaultStatus":"unaffected","product":"Linux","programFiles":["arch/x86/kernel/Makefile","arch/x86/mm/Makefile"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"0e96cd314c0d819c1635d68125a4d77852c2162e","status":"affected","version":"0d345996e4cb573f8cc81d49b3ee9a7fd2035bef","versionType":"git"},{"lessThan":"593d67032544b9271094fc9b43e437e017cb2b2f","status":"affected","version":"0d345996e4cb573f8cc81d49b3ee9a7fd2035bef","versionType":"git"},{"lessThan":"1e3e98596c2769721ade0418434852fb3af4849a","status":"affected","version"…
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:aa9b5de5def148c1e3470d77a50606d07b2acaa3d446ccd9495d460afeb2aed8 · sha256:066b095ab3e0900d… · /containers/cna/affected/0

Source references

5 source assertions
{"url":"https://git.kernel.org/stable/c/0e96cd314c0d819c1635d68125a4d77852c2162e"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:aa9b5de5def148c1e3470d77a50606d07b2acaa3d446ccd9495d460afeb2aed8 · sha256:066b095ab3e0900d… · /containers/cna/references/0
{"url":"https://git.kernel.org/stable/c/1e3e98596c2769721ade0418434852fb3af4849a"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:aa9b5de5def148c1e3470d77a50606d07b2acaa3d446ccd9495d460afeb2aed8 · sha256:066b095ab3e0900d… · /containers/cna/references/2
{"url":"https://git.kernel.org/stable/c/593d67032544b9271094fc9b43e437e017cb2b2f"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:aa9b5de5def148c1e3470d77a50606d07b2acaa3d446ccd9495d460afeb2aed8 · sha256:066b095ab3e0900d… · /containers/cna/references/1
{"url":"https://git.kernel.org/stable/c/917e3ad3321e75ca0223d5ccf26ceda116aa51e1"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:aa9b5de5def148c1e3470d77a50606d07b2acaa3d446ccd9495d460afeb2aed8 · sha256:066b095ab3e0900d… · /containers/cna/references/4
{"url":"https://git.kernel.org/stable/c/de05c66fab8847237a9ca216934e56d3ee837f08"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:aa9b5de5def148c1e3470d77a50606d07b2acaa3d446ccd9495d460afeb2aed8 · sha256:066b095ab3e0900d… · /containers/cna/references/3

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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