{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-43171","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","state":"PUBLISHED","assignerShortName":"Linux","dateReserved":"2026-05-01T14:12:55.990Z","datePublished":"2026-05-06T11:27:46.698Z","dateUpdated":"2026-05-11T22:19:09.627Z"},"containers":{"cna":{"providerMetadata":{"orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux","dateUpdated":"2026-05-11T22:19:09.627Z"},"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nEFI/CPER: don't dump the entire memory region\n\nThe current logic at cper_print_fw_err() doesn't check if the\nerror record length is big enough to handle offset. On a bad firmware,\nif the ofset is above the actual record, length -= offset will\nunderflow, making it dump the entire memory.\n\nThe end result can be:\n\n - the logic taking a lot of time dumping large regions of memory;\n - data disclosure due to the memory dumps;\n - an OOPS, if it tries to dump an unmapped memory region.\n\nFix it by checking if the section length is too small before doing\na hex dump.\n\n[ rjw: Subject tweaks ]"}],"affected":[{"product":"Linux","vendor":"Linux","defaultStatus":"unaffected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/firmware/efi/cper.c"],"versions":[{"version":"3d8c11efd528d56972d44ed0de51c4e11a9a4fa9","lessThan":"02de64ab54b4bb0f1b21bb324aeff3b08612be33","status":"affected","versionType":"git"},{"version":"3d8c11efd528d56972d44ed0de51c4e11a9a4fa9","lessThan":"0e09b522f2622841389c3b2f9ac4969e35c0809d","status":"affected","versionType":"git"},{"version":"3d8c11efd528d56972d44ed0de51c4e11a9a4fa9","lessThan":"64ae5aaa7ac93c83da456039e8ec747bfa8a7cff","status":"affected","versionType":"git"},{"version":"3d8c11efd528d56972d44ed0de51c4e11a9a4fa9","lessThan":"5a9b1dda8481b82851a655c3bcc5b44879b95334","status":"affected","versionType":"git"},{"version":"3d8c11efd528d56972d44ed0de51c4e11a9a4fa9","lessThan":"7780c0bad2a3a70a8c0113a33c02f4151d901eb3","status":"affected","versionType":"git"},{"version":"3d8c11efd528d56972d44ed0de51c4e11a9a4fa9","lessThan":"a8419f5f2c5f2d80848ddabb2b95cf0da84a5f91","status":"affected","versionType":"git"},{"version":"3d8c11efd528d56972d44ed0de51c4e11a9a4fa9","lessThan":"54e131db4cdffd946db890ff33ff2647053fd4f6","status":"affected","versionType":"git"},{"version":"3d8c11efd528d56972d44ed0de51c4e11a9a4fa9","lessThan":"55cc6fe5716f678f06bcb95140882dfa684464ec","status":"affected","versionType":"git"}]},{"product":"Linux","vendor":"Linux","defaultStatus":"affected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/firmware/efi/cper.c"],"versions":[{"version":"5.7","status":"affected"},{"version":"0","lessThan":"5.7","status":"unaffected","versionType":"semver"},{"version":"5.10.252","lessThanOrEqual":"5.10.*","status":"unaffected","versionType":"semver"},{"version":"5.15.202","lessThanOrEqual":"5.15.*","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":"5.7","versionEndExcluding":"5.10.252"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.7","versionEndExcluding":"5.15.202"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.7","versionEndExcluding":"6.1.165"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.7","versionEndExcluding":"6.6.128"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.7","versionEndExcluding":"6.12.75"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.7","versionEndExcluding":"6.18.16"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.7","versionEndExcluding":"6.19.6"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.7","versionEndExcluding":"7.0"}]}]}],"references":[{"url":"https://git.kernel.org/stable/c/02de64ab54b4bb0f1b21bb324aeff3b08612be33"},{"url":"https://git.kernel.org/stable/c/0e09b522f2622841389c3b2f9ac4969e35c0809d"},{"url":"https://git.kernel.org/stable/c/64ae5aaa7ac93c83da456039e8ec747bfa8a7cff"},{"url":"https://git.kernel.org/stable/c/5a9b1dda8481b82851a655c3bcc5b44879b95334"},{"url":"https://git.kernel.org/stable/c/7780c0bad2a3a70a8c0113a33c02f4151d901eb3"},{"url":"https://git.kernel.org/stable/c/a8419f5f2c5f2d80848ddabb2b95cf0da84a5f91"},{"url":"https://git.kernel.org/stable/c/54e131db4cdffd946db890ff33ff2647053fd4f6"},{"url":"https://git.kernel.org/stable/c/55cc6fe5716f678f06bcb95140882dfa684464ec"}],"title":"EFI/CPER: don't dump the entire memory region","x_generator":{"engine":"bippy-1.2.0"}}}}