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CVE-2026-45876

In the Linux kernel, the following vulnerability has been resolved: arm64/gcs: Fix error handling in arch_set_shadow_stack_status() alloc_gcs() returns an error-encoded pointer on failure, which comes from do_mmap(), not NULL. The current NULL check fails to detect errors, which could lead to using an invalid GCS address. Use IS_ERR_VALUE() to properly detect errors, consistent with the check in gcs_alloc_thread_stack().
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:a5316ca023ebdc09c92885db51ad7c51c275a93f2c1e3612cc8f481562f6755d
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/arm64/mm/gcs.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"6.13"},{"lessThan":"6.13","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.14","versionType":"semver"},{"lessThanOrEqual":"6.19.*","status":"unaffected","version":"6.19.4","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.0","versionType":"original_commit_for_fix"}]}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:0f256453f877187339091531136cf7b53c5a54d37409262580ebf7c9b4cdbea1 · sha256:5d99b12301c89050… · /containers/cna/affected/1

{"defaultStatus":"unaffected","product":"Linux","programFiles":["arch/arm64/mm/gcs.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"c787a235deb33be6eda40beee8f561da5fd8cb8c","status":"affected","version":"b57180c75c7ebff6613886cb69ef6e283a10358b","versionType":"git"},{"lessThan":"a4741114c9622346c4bbb8cc2bbd88153616ffaf","status":"affected","version":"b57180c75c7ebff6613886cb69ef6e283a10358b","versionType":"git"},{"lessThan":"53c998527ffa60f9deda8974a11ad39790684159","status":"affected","version":"b57180c75c7ebff6613886cb69…

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:0f256453f877187339091531136cf7b53c5a54d37409262580ebf7c9b4cdbea1 · sha256:5d99b12301c89050… · /containers/cna/affected/0

Affected products and versions

2 source assertions
{"defaultStatus":"affected","product":"Linux","programFiles":["arch/arm64/mm/gcs.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"6.13"},{"lessThan":"6.13","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.14","versionType":"semver"},{"lessThanOrEqual":"6.19.*","status":"unaffected","version":"6.19.4","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.0","versionType":"original_commit_for_fix"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:0f256453f877187339091531136cf7b53c5a54d37409262580ebf7c9b4cdbea1 · sha256:5d99b12301c89050… · /containers/cna/affected/1
{"defaultStatus":"unaffected","product":"Linux","programFiles":["arch/arm64/mm/gcs.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"c787a235deb33be6eda40beee8f561da5fd8cb8c","status":"affected","version":"b57180c75c7ebff6613886cb69ef6e283a10358b","versionType":"git"},{"lessThan":"a4741114c9622346c4bbb8cc2bbd88153616ffaf","status":"affected","version":"b57180c75c7ebff6613886cb69ef6e283a10358b","versionType":"git"},{"lessThan":"53c998527ffa60f9deda8974a11ad39790684159","status":"affected","version":"b57180c75c7ebff6613886cb69…
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:0f256453f877187339091531136cf7b53c5a54d37409262580ebf7c9b4cdbea1 · sha256:5d99b12301c89050… · /containers/cna/affected/0

Source references

3 source assertions
{"url":"https://git.kernel.org/stable/c/53c998527ffa60f9deda8974a11ad39790684159"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:0f256453f877187339091531136cf7b53c5a54d37409262580ebf7c9b4cdbea1 · sha256:5d99b12301c89050… · /containers/cna/references/2
{"url":"https://git.kernel.org/stable/c/a4741114c9622346c4bbb8cc2bbd88153616ffaf"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:0f256453f877187339091531136cf7b53c5a54d37409262580ebf7c9b4cdbea1 · sha256:5d99b12301c89050… · /containers/cna/references/1
{"url":"https://git.kernel.org/stable/c/c787a235deb33be6eda40beee8f561da5fd8cb8c"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:0f256453f877187339091531136cf7b53c5a54d37409262580ebf7c9b4cdbea1 · sha256:5d99b12301c89050… · /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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