{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-43129","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","state":"PUBLISHED","assignerShortName":"Linux","dateReserved":"2026-05-01T14:12:55.988Z","datePublished":"2026-05-06T11:27:18.180Z","dateUpdated":"2026-05-11T22:18:19.113Z"},"containers":{"cna":{"providerMetadata":{"orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux","dateUpdated":"2026-05-11T22:18:19.113Z"},"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nima: verify the previous kernel's IMA buffer lies in addressable RAM\n\nPatch series \"Address page fault in ima_restore_measurement_list()\", v3.\n\nWhen the second-stage kernel is booted via kexec with a limiting command\nline such as \"mem=<size>\" we observe a pafe fault that happens.\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\nThis happens on x86_64 only, as this is already fixed in aarch64 in\ncommit: cbf9c4b9617b (\"of: check previous kernel's ima-kexec-buffer\nagainst memory bounds\")\n\n\nThis patch (of 3):\n\nWhen the second-stage kernel is booted with a limiting command line (e.g. \n\"mem=<size>\"), the IMA measurement buffer handed over from the previous\nkernel may fall outside the addressable RAM of the new kernel.  Accessing\nsuch a buffer can fault during early restore.\n\nIntroduce a small generic helper, ima_validate_range(), which verifies\nthat a physical [start, end] range for the previous-kernel IMA buffer lies\nwithin addressable memory:\n\t- On x86, use pfn_range_is_mapped().\n\t- On OF based architectures, use page_is_ram()."}],"affected":[{"product":"Linux","vendor":"Linux","defaultStatus":"unaffected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["include/linux/ima.h","security/integrity/ima/ima_kexec.c"],"versions":[{"version":"b69a2afd5afce9bf6d56e349d6ab592c916e20f2","lessThan":"f11d7d088f5ed54b31c6735854c12845eb60eb4a","status":"affected","versionType":"git"},{"version":"b69a2afd5afce9bf6d56e349d6ab592c916e20f2","lessThan":"9e1f51c1ad57cc76a0e8b5eb27038f8973fff4fa","status":"affected","versionType":"git"},{"version":"b69a2afd5afce9bf6d56e349d6ab592c916e20f2","lessThan":"5366ec7d2f793ce703c403d7fd4c25a3db365b9d","status":"affected","versionType":"git"},{"version":"b69a2afd5afce9bf6d56e349d6ab592c916e20f2","lessThan":"10d1c75ed4382a8e79874379caa2ead8952734f9","status":"affected","versionType":"git"}]},{"product":"Linux","vendor":"Linux","defaultStatus":"affected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["include/linux/ima.h","security/integrity/ima/ima_kexec.c"],"versions":[{"version":"6.0","status":"affected"},{"version":"0","lessThan":"6.0","status":"unaffected","versionType":"semver"},{"version":"6.12.77","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":"6.12.77"},{"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/f11d7d088f5ed54b31c6735854c12845eb60eb4a"},{"url":"https://git.kernel.org/stable/c/9e1f51c1ad57cc76a0e8b5eb27038f8973fff4fa"},{"url":"https://git.kernel.org/stable/c/5366ec7d2f793ce703c403d7fd4c25a3db365b9d"},{"url":"https://git.kernel.org/stable/c/10d1c75ed4382a8e79874379caa2ead8952734f9"}],"title":"ima: verify the previous kernel's IMA buffer lies in addressable RAM","x_generator":{"engine":"bippy-1.2.0"}}}}