{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-43240","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","state":"PUBLISHED","assignerShortName":"Linux","dateReserved":"2026-05-01T14:12:55.995Z","datePublished":"2026-05-06T11:28:34.269Z","dateUpdated":"2026-05-11T22:20:43.108Z"},"containers":{"cna":{"providerMetadata":{"orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux","dateUpdated":"2026-05-11T22:20:43.108Z"},"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nx86/kexec: add a sanity check on previous kernel's ima kexec buffer\n\nWhen the second-stage kernel is booted via kexec with a limiting command\nline such as \"mem=<size>\", the physical range that contains the carried\nover IMA measurement list may fall outside the truncated RAM leading to a\nkernel panic.\n\n    BUG: unable to handle page fault for address: ffff97793ff47000\n    RIP: ima_restore_measurement_list+0xdc/0x45a\n    #PF: error_code(0x0000) – not-present page\n\nOther architectures already validate the range with page_is_ram(), as done\nin commit cbf9c4b9617b (\"of: check previous kernel's ima-kexec-buffer\nagainst memory bounds\") do a similar check on x86.\n\nWithout carrying the measurement list across kexec, the attestation\nwould fail."}],"affected":[{"product":"Linux","vendor":"Linux","defaultStatus":"unaffected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["arch/x86/kernel/setup.c"],"versions":[{"version":"b69a2afd5afce9bf6d56e349d6ab592c916e20f2","lessThan":"37f18915a261afe84dab462624ed829cddb77a9b","status":"affected","versionType":"git"},{"version":"b69a2afd5afce9bf6d56e349d6ab592c916e20f2","lessThan":"22e460b6333a5f818b042ac89201f8e735556f4a","status":"affected","versionType":"git"},{"version":"b69a2afd5afce9bf6d56e349d6ab592c916e20f2","lessThan":"f8f73bf0f8a57ee9b86792456bd42079bc98c6b7","status":"affected","versionType":"git"},{"version":"b69a2afd5afce9bf6d56e349d6ab592c916e20f2","lessThan":"d4a132f121c591b60dbaf57ea91f1faf11631fbc","status":"affected","versionType":"git"},{"version":"b69a2afd5afce9bf6d56e349d6ab592c916e20f2","lessThan":"4d7a8f5f28187e3d2958b2a134473da2665207e7","status":"affected","versionType":"git"},{"version":"b69a2afd5afce9bf6d56e349d6ab592c916e20f2","lessThan":"c5489d04337b47e93c0623e8145fcba3f5739efd","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/x86/kernel/setup.c"],"versions":[{"version":"6.0","status":"affected"},{"version":"0","lessThan":"6.0","status":"unaffected","versionType":"semver"},{"version":"6.1.165","lessThanOrEqual":"6.1.*","status":"unaffected","versionType":"semver"},{"version":"6.6.128","lessThanOrEqual":"6.6.*","status":"unaffected","versionType":"semver"},{"version":"6.12.75","lessThanOrEqual":"6.12.*","status":"unaffected","versionType":"semver"},{"version":"6.18.16","lessThanOrEqual":"6.18.*","status":"unaffected","versionType":"semver"},{"version":"6.19.6","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":"6.0","versionEndExcluding":"6.1.165"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.0","versionEndExcluding":"6.6.128"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.0","versionEndExcluding":"6.12.75"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.0","versionEndExcluding":"6.18.16"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.0","versionEndExcluding":"6.19.6"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.0","versionEndExcluding":"7.0"}]}]}],"references":[{"url":"https://git.kernel.org/stable/c/37f18915a261afe84dab462624ed829cddb77a9b"},{"url":"https://git.kernel.org/stable/c/22e460b6333a5f818b042ac89201f8e735556f4a"},{"url":"https://git.kernel.org/stable/c/f8f73bf0f8a57ee9b86792456bd42079bc98c6b7"},{"url":"https://git.kernel.org/stable/c/d4a132f121c591b60dbaf57ea91f1faf11631fbc"},{"url":"https://git.kernel.org/stable/c/4d7a8f5f28187e3d2958b2a134473da2665207e7"},{"url":"https://git.kernel.org/stable/c/c5489d04337b47e93c0623e8145fcba3f5739efd"}],"title":"x86/kexec: add a sanity check on previous kernel's ima kexec buffer","x_generator":{"engine":"bippy-1.2.0"}}}}