CVE-2026-43289

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-43289", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-05-01T14:12:55.999Z", "datePublished": "2026-05-08T13:11:13.860Z", "dateUpdated": "2026-11-06T15:42:47.045Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-05-23T16:06:38.103Z"}, "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": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["kernel/kexec_file.c"], "versions": [{"version": "f368aed4827bd4276c0e3664fb2cb815a8d7caf3", "lessThan": "027797595a108726f4a0a45d225f603b0ffbd22b", "status": "affected", "versionType": "git"}, {"version": "d38e051ec6fd8650b139d9bc4b0b8b261953b263", "lessThan": "1737d37ae1d2814e6cf0a1af87af3d41f0812b95", "status": "affected", "versionType": "git"}, {"version": "013027918a4efa807409fcb356009c117e4d181a", "lessThan": "f736032c638a33a243e9126e617788f763d648f9", "status": "affected", "versionType": "git"}, {"version": "8652d44f466ad5772e7d1756e9457046189b0dfc", "lessThan": "cfccd3b8c51bc57a8a6fcb2fd30453afae5bc0d2", "status": "affected", "versionType": "git"}, {"version": "8652d44f466ad5772e7d1756e9457046189b0dfc", "lessThan": "875355152b33436907c2a6d2ffad1431fa86c62b", "status": "affected", "versionType": "git"}, {"version": "8652d44f466ad5772e7d1756e9457046189b0dfc", "lessThan": "36eb314184a0ae74dd42914b47d2b9fc43be8034", "status": "affected", "versionType": "git"}, {"version": "8652d44f466ad5772e7d1756e9457046189b0dfc", "lessThan": "5226570bd252cea2e805a161cb0f75c204c3108a", "status": "affected", "versionType": "git"}, {"version": "8652d44f466ad5772e7d1756e9457046189b0dfc", "lessThan": "480e1d5c64bb14441f79f2eb9421d5e26f91ea3d", "status": "affected", "versionType": "git"}, {"version": "4947a0eb7d642b6048559857964966016ef3aa8b", "status": "affected", "versionType": "git"}, {"version": "b16bf76b382810257e3fb6278663a9d131b70197", "status": "affected", "versionType": "git"}, {"version": "cb1638618545182a01444b2b20a4ed6b9d2a8c8f", "status": "affected", "versionType": "git"}, {"version": "5.10.185", "lessThan": "5.10.252", "status": "affected", "versionType": "semver"}, {"version": "5.15.118", "lessThan": "5.15.202", "status": "affected", "versionType": "semver"}, {"version": "6.1.35", "lessThan": "6.1.165", "status": "affected", "versionType": "semver"}, {"version": "4.19.287", "lessThan": "4.20", "status": "affected", "versionType": "semver"}, {"version": "5.4.248", "lessThan": "5.5", "status": "affected", "versionType": "semver"}, {"version": "6.3.9", "lessThan": "6.4", "status": "affected", "versionType": "semver"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["kernel/kexec_file.c"], "versions": [{"version": "6.4", "status": "affected"}, {"version": "0", "lessThan": "6.4", "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": 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"https://git.kernel.org/stable/c/36eb314184a0ae74dd42914b47d2b9fc43be8034"}, {"url": "https://git.kernel.org/stable/c/5226570bd252cea2e805a161cb0f75c204c3108a"}, {"url": "https://git.kernel.org/stable/c/480e1d5c64bb14441f79f2eb9421d5e26f91ea3d"}], "title": "kexec: derive purgatory entry from symbol", "x_generator": {"engine": "bippy-1.2.0"}}, "adp": [{"metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2026-43289", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2026-11-06T15:33:32.901478Z"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-11-06T15:42:47.045Z"}}]}}

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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]"}], "cpeApplicability": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "5.10.252", "versionStartIncluding": "5.10.185"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "5.15.202", "versionStartIncluding": "5.15.118"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.1.165", "versionStartIncluding": "6.1.35"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.6.128", "versionStartIncluding": "6.4"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.12.75", "versionStartIncluding": "6.4"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.18.16", "versionStartIncluding": "6.4"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.19.6", "versionStartIncluding": "6.4"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "7.0", "versionStartIncluding": "6.4"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionStartIncluding": "4.19.287"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionStartIncluding": "5.4.248"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionStartIncluding": "6.3.9"}], "operator": "OR"}]}], "providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-05-23T16:06:38.103Z"}}}, "cveMetadata": {"cveId": "CVE-2026-43289", "state": "PUBLISHED", "dateUpdated": "2026-11-06T15:42:47.045Z", "dateReserved": "2026-05-01T14:12:55.999Z", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "datePublished": "2026-05-08T13:11:13.860Z", "assignerShortName": "Linux"}, "dataVersion": "5.2"}

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"vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "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]"}, {"lang": "es", "value": "En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta:\n\nkexec: derivar la entrada del purgatorio del s\u00edmbolo\n\nkexec_load_purgatory() deriva image -> start localizando e_entry dentro de una secci\u00f3n SHF_EXECINSTR. Si el objeto purgatorio contiene m\u00faltiples secciones ejecutables con sh_addr superpuestas, la comprobaci\u00f3n del punto de entrada puede coincidir m\u00e1s de una vez y activar una WARN.\n\nDerivar la secci\u00f3n de entrada del s\u00edmbolo purgatory_start cuando est\u00e9 presente y calcular image -> start a partir de su ubicaci\u00f3n final. Mantener la alternativa e_entry existente para los purgatorios que no exponen el s\u00edmbolo.\n\nADVERTENCIA: kernel/kexec_file.c:1009 en kexec_load_purgatory+0x395/0x3c0, CPU#10: kexec/1784\nTraza de Llamada:\n [TAREA]\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: mover la funci\u00f3n auxiliar para evitar la declaraci\u00f3n anticipada, seg\u00fan Baoquan]"}], "id": "CVE-2026-43289", "lastModified": "2026-11-11T20:10:00.273", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 5.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 3.6, "source": "nvd@nist.gov", "type": "Primary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-43289", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-11-06T15:33:32.901478Z", "version": "2.0.3"}}]}, "published": "2026-05-08T14:16:35.867", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/027797595a108726f4a0a45d225f603b0ffbd22b"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/1737d37ae1d2814e6cf0a1af87af3d41f0812b95"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/36eb314184a0ae74dd42914b47d2b9fc43be8034"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/480e1d5c64bb14441f79f2eb9421d5e26f91ea3d"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/5226570bd252cea2e805a161cb0f75c204c3108a"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/875355152b33436907c2a6d2ffad1431fa86c62b"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/cfccd3b8c51bc57a8a6fcb2fd30453afae5bc0d2"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/f736032c638a33a243e9126e617788f763d648f9"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "NVD-CWE-noinfo"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"bugzilla": {"description": "kernel: kexec: derive purgatory entry from symbol", "id": "2468115", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2468115"}, "csaw": false, "cvss3": {"cvss3_base_score": "5.5", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "status": "draft"}, "details": ["No description is available for this CVE."], "name": "CVE-2026-43289", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Fix deferred", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Fix deferred", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Fix deferred", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2026-05-08T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-43289\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-43289\nhttps://lore.kernel.org/linux-cve-announce/2026050852-CVE-2026-43289-ad06@gregkh/T"], "threat_severity": "Low"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[f368aed4827bd4276c0e3664fb2cb815a8d7caf3,027797595a108726f4a0a45d225f603b0ffbd22b)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[d38e051ec6fd8650b139d9bc4b0b8b261953b263,1737d37ae1d2814e6cf0a1af87af3d41f0812b95)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[013027918a4efa807409fcb356009c117e4d181a,f736032c638a33a243e9126e617788f763d648f9)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[8652d44f466ad5772e7d1756e9457046189b0dfc,cfccd3b8c51bc57a8a6fcb2fd30453afae5bc0d2)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[8652d44f466ad5772e7d1756e9457046189b0dfc,875355152b33436907c0a6d2ffad1431fa86c62b)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[8652d44f466ad5772e7d1756e9457046189b0dfc,36eb314184a0ae74dd42914b47d2b9fc43be8034)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[8652d44f466ad5771e7d1756e9457046189b0dfc,5226570bd252cea2e805a161cb0f75c204c3108a)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[8652d44f466ad5771e7d1756e9457046189b0dfc,480e1d5c64bb14441f79f2eb9421d5e26f91ea3d)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "4947a0eb7d642b6048559857964966016ef3aa8b"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "b16bf76b382810257e3fb6278663a9d131b70197"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "cb1638618545182a01444b2b20a4ed6b9d2a8c8f"}}], "enrichment": {"confidence": 99.0, "confidence_source": "inferred", "scores": [{"score": 99.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}, {"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "6.4"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[0,6.4)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[5.10.252,5.11.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[5.15.202,5.16.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.1.165,6.2.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.6.128,6.7.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.12.75,6.13.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.18.16,6.19.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.19.6,6.20.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[7.0,*]"}}], "enrichment": {"confidence": 99.0, "confidence_source": "inferred", "scores": [{"score": 99.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}], "created": "2026-05-08T16:30:12.439124+00:00", "updated": "2026-05-15T21:00:09.136314+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}