{"id":"CVE-2024-40944","state":"PUBLISHED","title":"x86/kexec: Fix bug with call depth tracking","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nx86/kexec: Fix bug with call depth tracking\n\nThe call to cc_platform_has() triggers a fault and system crash if call depth\ntracking is active because the GS segment has been reset by load_segments() and\nGS_BASE is now 0 but call depth tracking uses per-CPU variables to operate.\n\nCall cc_platform_has() earlier in the function when GS is still valid.\n\n  [ bp: Massage. ]","publishedAt":"2024-07-12T12:25:18.490Z","updatedAt":"2026-05-11T20:22:51.786Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"5d8213864ade86b48fc492584ea86d65a62f892e","status":"affected","lessThan":"d91ddd05082691e69b30744825d18ae799293258","versionType":"git"},{"version":"5d8213864ade86b48fc492584ea86d65a62f892e","status":"affected","lessThan":"2cfb464669b645a9b98478b74f2bcea9860dcff1","versionType":"git"},{"version":"5d8213864ade86b48fc492584ea86d65a62f892e","status":"affected","lessThan":"93c1800b3799f17375989b0daf76497dd3e80922","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["arch/x86/kernel/machine_kexec_64.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"6.2","status":"affected"},{"version":"0","status":"unaffected","lessThan":"6.2","versionType":"semver"},{"version":"6.6.35","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.9.6","status":"unaffected","lessThanOrEqual":"6.9.*","versionType":"semver"},{"version":"6.10","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["arch/x86/kernel/machine_kexec_64.c"]}],"references":["https://git.kernel.org/stable/c/d91ddd05082691e69b30744825d18ae799293258","https://git.kernel.org/stable/c/2cfb464669b645a9b98478b74f2bcea9860dcff1","https://git.kernel.org/stable/c/93c1800b3799f17375989b0daf76497dd3e80922"],"weaknesses":[],"ingestedAt":"2026-10-29T20:07:39.287Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2024/40xxx/CVE-2024-40944.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2024-40944","state":"PUBLISHED","datePublished":"2024-07-12T12:25:18.490Z","dateUpdated":"2026-05-11T20:22:51.786Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2024-07-12T12:17:45.588Z"},"containers":{"cna":{"title":"x86/kexec: Fix bug with call depth tracking","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nx86/kexec: Fix bug with call depth tracking\n\nThe call to cc_platform_has() triggers a fault and system crash if call depth\ntracking is active because the GS segment has been reset by load_segments() and\nGS_BASE is now 0 but call depth tracking uses per-CPU variables to operate.\n\nCall cc_platform_has() earlier in the function when GS is still valid.\n\n  [ bp: Massage. ]"}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"5d8213864ade86b48fc492584ea86d65a62f892e","status":"affected","lessThan":"d91ddd05082691e69b30744825d18ae799293258","versionType":"git"},{"version":"5d8213864ade86b48fc492584ea86d65a62f892e","status":"affected","lessThan":"2cfb464669b645a9b98478b74f2bcea9860dcff1","versionType":"git"},{"version":"5d8213864ade86b48fc492584ea86d65a62f892e","status":"affected","lessThan":"93c1800b3799f17375989b0daf76497dd3e80922","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["arch/x86/kernel/machine_kexec_64.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"6.2","status":"affected"},{"version":"0","status":"unaffected","lessThan":"6.2","versionType":"semver"},{"version":"6.6.35","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.9.6","status":"unaffected","lessThanOrEqual":"6.9.*","versionType":"semver"},{"version":"6.10","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["arch/x86/kernel/machine_kexec_64.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/d91ddd05082691e69b30744825d18ae799293258"},{"url":"https://git.kernel.org/stable/c/2cfb464669b645a9b98478b74f2bcea9860dcff1"},{"url":"https://git.kernel.org/stable/c/93c1800b3799f17375989b0daf76497dd3e80922"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-05-11T20:22:51.786Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.2","versionEndExcluding":"6.6.35"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.2","versionEndExcluding":"6.9.6"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.2","versionEndExcluding":"6.10"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}},"adp":[{"title":"CVE Program Container","references":[{"url":"https://git.kernel.org/stable/c/d91ddd05082691e69b30744825d18ae799293258","tags":["x_transferred"]},{"url":"https://git.kernel.org/stable/c/2cfb464669b645a9b98478b74f2bcea9860dcff1","tags":["x_transferred"]},{"url":"https://git.kernel.org/stable/c/93c1800b3799f17375989b0daf76497dd3e80922","tags":["x_transferred"]}],"providerMetadata":{"shortName":"CVE","orgId":"af854a3a-2127-422b-91ae-364da2661108","dateUpdated":"2024-08-02T04:39:55.992Z"}},{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"id":"CVE-2024-40944","role":"CISA Coordinator","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"version":"2.0.3","timestamp":"2024-09-10T17:04:17.603512Z"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2024-09-11T17:34:25.451Z"}}]}}}