{"id":"CVE-2026-43289","state":"PUBLISHED","title":"kexec: derive purgatory entry from symbol","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nkexec: derive purgatory entry from symbol\n\nkexec_load_purgatory() derives image->start by locating e_entry inside an\nSHF_EXECINSTR section.  If the purgatory object contains multiple\nexecutable sections with overlapping sh_addr, the entrypoint check can\nmatch more than once and trigger a WARN.\n\nDerive the entry section from the purgatory_start symbol when present and\ncompute image->start from its final placement.  Keep the existing e_entry\nfallback for purgatories that do not expose the symbol.\n\nWARNING: kernel/kexec_file.c:1009 at kexec_load_purgatory+0x395/0x3c0, CPU#10: kexec/1784\nCall Trace:\n <TASK>\n bzImage64_load+0x133/0xa00\n __do_sys_kexec_file_load+0x2b3/0x5c0\n do_syscall_64+0x81/0x610\n entry_SYSCALL_64_after_hwframe+0x76/0x7e\n\n[me@linux.beauty: move helper to avoid forward declaration, per Baoquan]","publishedAt":"2026-05-08T13:11:13.860Z","updatedAt":"2026-05-23T16:06:38.103Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"f368aed4827bd4276c0e3664fb2cb815a8d7caf3","status":"affected","lessThan":"027797595a108726f4a0a45d225f603b0ffbd22b","versionType":"git"},{"version":"d38e051ec6fd8650b139d9bc4b0b8b261953b263","status":"affected","lessThan":"1737d37ae1d2814e6cf0a1af87af3d41f0812b95","versionType":"git"},{"version":"013027918a4efa807409fcb356009c117e4d181a","status":"affected","lessThan":"f736032c638a33a243e9126e617788f763d648f9","versionType":"git"},{"version":"8652d44f466ad5772e7d1756e9457046189b0dfc","status":"affected","lessThan":"cfccd3b8c51bc57a8a6fcb2fd30453afae5bc0d2","versionType":"git"},{"version":"8652d44f466ad5772e7d1756e9457046189b0dfc","status":"affected","lessThan":"875355152b33436907c2a6d2ffad1431fa86c62b","versionType":"git"},{"version":"8652d44f466ad5772e7d1756e9457046189b0dfc","status":"affected","lessThan":"36eb314184a0ae74dd42914b47d2b9fc43be8034","versionType":"git"},{"version":"8652d44f466ad5772e7d1756e9457046189b0dfc","status":"affected","lessThan":"5226570bd252cea2e805a161cb0f75c204c3108a","versionType":"git"},{"version":"8652d44f466ad5772e7d1756e9457046189b0dfc","status":"affected","lessThan":"480e1d5c64bb14441f79f2eb9421d5e26f91ea3d","versionType":"git"},{"version":"4947a0eb7d642b6048559857964966016ef3aa8b","status":"affected","versionType":"git"},{"version":"b16bf76b382810257e3fb6278663a9d131b70197","status":"affected","versionType":"git"},{"version":"cb1638618545182a01444b2b20a4ed6b9d2a8c8f","status":"affected","versionType":"git"},{"version":"5.10.185","status":"affected","lessThan":"5.10.252","versionType":"semver"},{"version":"5.15.118","status":"affected","lessThan":"5.15.202","versionType":"semver"},{"version":"6.1.35","status":"affected","lessThan":"6.1.165","versionType":"semver"},{"version":"4.19.287","status":"affected","lessThan":"4.20","versionType":"semver"},{"version":"5.4.248","status":"affected","lessThan":"5.5","versionType":"semver"},{"version":"6.3.9","status":"affected","lessThan":"6.4","versionType":"semver"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["kernel/kexec_file.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"6.4","status":"affected"},{"version":"0","status":"unaffected","lessThan":"6.4","versionType":"semver"},{"version":"5.10.252","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.202","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.1.165","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.128","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.75","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.16","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"6.19.6","status":"unaffected","lessThanOrEqual":"6.19.*","versionType":"semver"},{"version":"7.0","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["kernel/kexec_file.c"]}],"references":["https://git.kernel.org/stable/c/027797595a108726f4a0a45d225f603b0ffbd22b","https://git.kernel.org/stable/c/1737d37ae1d2814e6cf0a1af87af3d41f0812b95","https://git.kernel.org/stable/c/f736032c638a33a243e9126e617788f763d648f9","https://git.kernel.org/stable/c/cfccd3b8c51bc57a8a6fcb2fd30453afae5bc0d2","https://git.kernel.org/stable/c/875355152b33436907c2a6d2ffad1431fa86c62b","https://git.kernel.org/stable/c/36eb314184a0ae74dd42914b47d2b9fc43be8034","https://git.kernel.org/stable/c/5226570bd252cea2e805a161cb0f75c204c3108a","https://git.kernel.org/stable/c/480e1d5c64bb14441f79f2eb9421d5e26f91ea3d"],"weaknesses":[],"ingestedAt":"2026-10-29T20:11:57.932Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/43xxx/CVE-2026-43289.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-43289","state":"PUBLISHED","datePublished":"2026-05-08T13:11:13.860Z","dateUpdated":"2026-05-23T16:06:38.103Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2026-05-01T14:12:55.999Z"},"containers":{"cna":{"title":"kexec: derive purgatory entry from symbol","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nkexec: derive purgatory entry from symbol\n\nkexec_load_purgatory() derives image->start by locating e_entry inside an\nSHF_EXECINSTR section.  If the purgatory object contains multiple\nexecutable sections with overlapping sh_addr, the entrypoint check can\nmatch more than once and trigger a WARN.\n\nDerive the entry section from the purgatory_start symbol when present and\ncompute image->start from its final placement.  Keep the existing e_entry\nfallback for purgatories that do not expose the symbol.\n\nWARNING: kernel/kexec_file.c:1009 at kexec_load_purgatory+0x395/0x3c0, CPU#10: kexec/1784\nCall Trace:\n <TASK>\n bzImage64_load+0x133/0xa00\n __do_sys_kexec_file_load+0x2b3/0x5c0\n do_syscall_64+0x81/0x610\n entry_SYSCALL_64_after_hwframe+0x76/0x7e\n\n[me@linux.beauty: move helper to avoid forward declaration, per Baoquan]"}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"f368aed4827bd4276c0e3664fb2cb815a8d7caf3","status":"affected","lessThan":"027797595a108726f4a0a45d225f603b0ffbd22b","versionType":"git"},{"version":"d38e051ec6fd8650b139d9bc4b0b8b261953b263","status":"affected","lessThan":"1737d37ae1d2814e6cf0a1af87af3d41f0812b95","versionType":"git"},{"version":"013027918a4efa807409fcb356009c117e4d181a","status":"affected","lessThan":"f736032c638a33a243e9126e617788f763d648f9","versionType":"git"},{"version":"8652d44f466ad5772e7d1756e9457046189b0dfc","status":"affected","lessThan":"cfccd3b8c51bc57a8a6fcb2fd30453afae5bc0d2","versionType":"git"},{"version":"8652d44f466ad5772e7d1756e9457046189b0dfc","status":"affected","lessThan":"875355152b33436907c2a6d2ffad1431fa86c62b","versionType":"git"},{"version":"8652d44f466ad5772e7d1756e9457046189b0dfc","status":"affected","lessThan":"36eb314184a0ae74dd42914b47d2b9fc43be8034","versionType":"git"},{"version":"8652d44f466ad5772e7d1756e9457046189b0dfc","status":"affected","lessThan":"5226570bd252cea2e805a161cb0f75c204c3108a","versionType":"git"},{"version":"8652d44f466ad5772e7d1756e9457046189b0dfc","status":"affected","lessThan":"480e1d5c64bb14441f79f2eb9421d5e26f91ea3d","versionType":"git"},{"version":"4947a0eb7d642b6048559857964966016ef3aa8b","status":"affected","versionType":"git"},{"version":"b16bf76b382810257e3fb6278663a9d131b70197","status":"affected","versionType":"git"},{"version":"cb1638618545182a01444b2b20a4ed6b9d2a8c8f","status":"affected","versionType":"git"},{"version":"5.10.185","status":"affected","lessThan":"5.10.252","versionType":"semver"},{"version":"5.15.118","status":"affected","lessThan":"5.15.202","versionType":"semver"},{"version":"6.1.35","status":"affected","lessThan":"6.1.165","versionType":"semver"},{"version":"4.19.287","status":"affected","lessThan":"4.20","versionType":"semver"},{"version":"5.4.248","status":"affected","lessThan":"5.5","versionType":"semver"},{"version":"6.3.9","status":"affected","lessThan":"6.4","versionType":"semver"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["kernel/kexec_file.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"6.4","status":"affected"},{"version":"0","status":"unaffected","lessThan":"6.4","versionType":"semver"},{"version":"5.10.252","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.202","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.1.165","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.128","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.75","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.16","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"6.19.6","status":"unaffected","lessThanOrEqual":"6.19.*","versionType":"semver"},{"version":"7.0","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["kernel/kexec_file.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/027797595a108726f4a0a45d225f603b0ffbd22b"},{"url":"https://git.kernel.org/stable/c/1737d37ae1d2814e6cf0a1af87af3d41f0812b95"},{"url":"https://git.kernel.org/stable/c/f736032c638a33a243e9126e617788f763d648f9"},{"url":"https://git.kernel.org/stable/c/cfccd3b8c51bc57a8a6fcb2fd30453afae5bc0d2"},{"url":"https://git.kernel.org/stable/c/875355152b33436907c2a6d2ffad1431fa86c62b"},{"url":"https://git.kernel.org/stable/c/36eb314184a0ae74dd42914b47d2b9fc43be8034"},{"url":"https://git.kernel.org/stable/c/5226570bd252cea2e805a161cb0f75c204c3108a"},{"url":"https://git.kernel.org/stable/c/480e1d5c64bb14441f79f2eb9421d5e26f91ea3d"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-05-23T16:06:38.103Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.10.185","versionEndExcluding":"5.10.252"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.15.118","versionEndExcluding":"5.15.202"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.1.35","versionEndExcluding":"6.1.165"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.4","versionEndExcluding":"6.6.128"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.4","versionEndExcluding":"6.12.75"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.4","versionEndExcluding":"6.18.16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