{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-45876","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","state":"PUBLISHED","assignerShortName":"Linux","dateReserved":"2026-05-13T15:03:33.081Z","datePublished":"2026-05-27T12:16:43.350Z","dateUpdated":"2026-05-27T12:16:43.350Z"},"containers":{"cna":{"providerMetadata":{"orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux","dateUpdated":"2026-05-27T12:16:43.350Z"},"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\narm64/gcs: Fix error handling in arch_set_shadow_stack_status()\n\nalloc_gcs() returns an error-encoded pointer on failure, which comes\nfrom do_mmap(), not NULL.\n\nThe current NULL check fails to detect errors, which could lead to using\nan invalid GCS address.\n\nUse IS_ERR_VALUE() to properly detect errors, consistent with the\ncheck in gcs_alloc_thread_stack()."}],"affected":[{"product":"Linux","vendor":"Linux","defaultStatus":"unaffected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["arch/arm64/mm/gcs.c"],"versions":[{"version":"b57180c75c7ebff6613886cb69ef6e283a10358b","lessThan":"c787a235deb33be6eda40beee8f561da5fd8cb8c","status":"affected","versionType":"git"},{"version":"b57180c75c7ebff6613886cb69ef6e283a10358b","lessThan":"a4741114c9622346c4bbb8cc2bbd88153616ffaf","status":"affected","versionType":"git"},{"version":"b57180c75c7ebff6613886cb69ef6e283a10358b","lessThan":"53c998527ffa60f9deda8974a11ad39790684159","status":"affected","versionType":"git"}]},{"product":"Linux","vendor":"Linux","defaultStatus":"affected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["arch/arm64/mm/gcs.c"],"versions":[{"version":"6.13","status":"affected"},{"version":"0","lessThan":"6.13","status":"unaffected","versionType":"semver"},{"version":"6.18.14","lessThanOrEqual":"6.18.*","status":"unaffected","versionType":"semver"},{"version":"6.19.4","lessThanOrEqual":"6.19.*","status":"unaffected","versionType":"semver"},{"version":"7.0","lessThanOrEqual":"*","status":"unaffected","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.13","versionEndExcluding":"6.18.14"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.13","versionEndExcluding":"6.19.4"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.13","versionEndExcluding":"7.0"}]}]}],"references":[{"url":"https://git.kernel.org/stable/c/c787a235deb33be6eda40beee8f561da5fd8cb8c"},{"url":"https://git.kernel.org/stable/c/a4741114c9622346c4bbb8cc2bbd88153616ffaf"},{"url":"https://git.kernel.org/stable/c/53c998527ffa60f9deda8974a11ad39790684159"}],"title":"arm64/gcs: Fix error handling in arch_set_shadow_stack_status()","x_generator":{"engine":"bippy-1.2.0"}}}}