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CVE-2026-46063

In the Linux kernel, the following vulnerability has been resolved: x86/shstk: Prevent deadlock during shstk sigreturn During sigreturn the shadow stack signal frame is popped. The kernel does this by reading the shadow stack using normal read accesses. When it can't assume the memory is shadow stack, it takes extra steps to makes sure it is reading actual shadow stack memory and not other normal readable memory. It does this by holding the mmap read lock while doing the access and checking th
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:28b994cedfd89765ee8c8897d488363bd0a1fd085b429025d8706fbc9743d4b7
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":"unaffected","product":"Linux","programFiles":["arch/x86/Kconfig","arch/x86/kernel/shstk.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"e2c2b044458cbf22da05264fa707308e8d4f86f9","status":"affected","version":"7fad2a432cd35bbf104d2d9d426e74902f22aa95","versionType":"git"},{"lessThan":"d042d69b417515959e49021fef008c9b04a99bd5","status":"affected","version":"7fad2a432cd35bbf104d2d9d426e74902f22aa95","versionType":"git"},{"lessThan":"4f3374c990fb2adec06d20fd6d780927811c9aa0","status":"affected","version":"7fa…

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:2c529a4e728ce68c7af649c9e88621cd70508085ad9673cf60a7e598bd26d7c8 · sha256:0759b21eea739e44… · /containers/cna/affected/0

{"defaultStatus":"affected","product":"Linux","programFiles":["arch/x86/Kconfig","arch/x86/kernel/shstk.c"],"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":"6.6.140","versionType":"semver"},{"lessThanOrEqual":"6.12.*","status":"unaffected","version":"6.12.88","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.27","versionType":"s…

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:2c529a4e728ce68c7af649c9e88621cd70508085ad9673cf60a7e598bd26d7c8 · sha256:0759b21eea739e44… · /containers/cna/affected/1

Affected products and versions

2 source assertions
{"defaultStatus":"unaffected","product":"Linux","programFiles":["arch/x86/Kconfig","arch/x86/kernel/shstk.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"e2c2b044458cbf22da05264fa707308e8d4f86f9","status":"affected","version":"7fad2a432cd35bbf104d2d9d426e74902f22aa95","versionType":"git"},{"lessThan":"d042d69b417515959e49021fef008c9b04a99bd5","status":"affected","version":"7fad2a432cd35bbf104d2d9d426e74902f22aa95","versionType":"git"},{"lessThan":"4f3374c990fb2adec06d20fd6d780927811c9aa0","status":"affected","version":"7fa…
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:2c529a4e728ce68c7af649c9e88621cd70508085ad9673cf60a7e598bd26d7c8 · sha256:0759b21eea739e44… · /containers/cna/affected/0
{"defaultStatus":"affected","product":"Linux","programFiles":["arch/x86/Kconfig","arch/x86/kernel/shstk.c"],"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":"6.6.140","versionType":"semver"},{"lessThanOrEqual":"6.12.*","status":"unaffected","version":"6.12.88","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.27","versionType":"s…
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:2c529a4e728ce68c7af649c9e88621cd70508085ad9673cf60a7e598bd26d7c8 · sha256:0759b21eea739e44… · /containers/cna/affected/1

Source references

5 source assertions
{"url":"https://git.kernel.org/stable/c/3d29db827502067626062f5c74dd502d14ab15bc"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:2c529a4e728ce68c7af649c9e88621cd70508085ad9673cf60a7e598bd26d7c8 · sha256:0759b21eea739e44… · /containers/cna/references/3
{"url":"https://git.kernel.org/stable/c/4f3374c990fb2adec06d20fd6d780927811c9aa0"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:2c529a4e728ce68c7af649c9e88621cd70508085ad9673cf60a7e598bd26d7c8 · sha256:0759b21eea739e44… · /containers/cna/references/2
{"url":"https://git.kernel.org/stable/c/9874b2917b9fbc30956fee209d3c4aa47201c64e"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:2c529a4e728ce68c7af649c9e88621cd70508085ad9673cf60a7e598bd26d7c8 · sha256:0759b21eea739e44… · /containers/cna/references/4
{"url":"https://git.kernel.org/stable/c/d042d69b417515959e49021fef008c9b04a99bd5"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:2c529a4e728ce68c7af649c9e88621cd70508085ad9673cf60a7e598bd26d7c8 · sha256:0759b21eea739e44… · /containers/cna/references/1
{"url":"https://git.kernel.org/stable/c/e2c2b044458cbf22da05264fa707308e8d4f86f9"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:2c529a4e728ce68c7af649c9e88621cd70508085ad9673cf60a7e598bd26d7c8 · sha256:0759b21eea739e44… · /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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