{"api_version":"1","generated_at":"2026-10-02T00:11:52+00:00","cve":"CVE-2026-89963","urls":{"html":"https://cve.report/CVE-2026-89963","api":"https://cve.report/api/cve/CVE-2026-89963.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-89963","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-89963"},"summary":{"title":"powerpc/kexec_file: Fix null-ptr-def in extra size calculation","description":"In the Linux kernel, the following vulnerability has been resolved:\n\npowerpc/kexec_file: Fix null-ptr-def in extra size calculation\n\nA static Sashiko AI review identified a potential NULL pointer\ndereference in kexec_extra_fdt_size_ppc64().\n\nOn platforms without any reserved memory regions,\nget_reserved_memory_ranges() can return 0 while leaving 'rmem'\nunallocated as NULL. Passing it directly leads to a kernel panic when\nevaluating 'rmem->nr_ranges'.\n\nAdd a NULL check for 'rmem' to prevent this crash.","state":"PUBLISHED","assigner":"Linux","published_at":"2026-09-16 11:17:06","updated_at":"2026-09-16 11:17:06"},"problem_types":[],"metrics":[],"references":[{"url":"https://git.kernel.org/stable/c/761eda315a6e1fda3e8e2185b28430771fb1ac29","name":"https://git.kernel.org/stable/c/761eda315a6e1fda3e8e2185b28430771fb1ac29","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/df45337587db21c502fe5251d3bcc7887428f4fb","name":"https://git.kernel.org/stable/c/df45337587db21c502fe5251d3bcc7887428f4fb","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/11ef1c2a5dbe0bd8c1345f59bab7331d352f02cf","name":"https://git.kernel.org/stable/c/11ef1c2a5dbe0bd8c1345f59bab7331d352f02cf","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/4ff3d9fd71c7bc2fc81afdac1970d9c55a5c0dea","name":"https://git.kernel.org/stable/c/4ff3d9fd71c7bc2fc81afdac1970d9c55a5c0dea","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-89963","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-89963","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 0d3ff067331ef84e7e7f49537d768881042ed5ba 11ef1c2a5dbe0bd8c1345f59bab7331d352f02cf git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 0d3ff067331ef84e7e7f49537d768881042ed5ba df45337587db21c502fe5251d3bcc7887428f4fb git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 0d3ff067331ef84e7e7f49537d768881042ed5ba 4ff3d9fd71c7bc2fc81afdac1970d9c55a5c0dea git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 0d3ff067331ef84e7e7f49537d768881042ed5ba 761eda315a6e1fda3e8e2185b28430771fb1ac29 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 6.11","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.11 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.12.110 6.12.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.18.51 6.18.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.2.5 7.2.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.3-rc1 * original_commit_for_fix","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[],"vendor_comments":[],"enrichments":{"kev":null,"epss":null,"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"cna":{"affected":[{"defaultStatus":"unaffected","product":"Linux","programFiles":["arch/powerpc/kexec/file_load_64.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"11ef1c2a5dbe0bd8c1345f59bab7331d352f02cf","status":"affected","version":"0d3ff067331ef84e7e7f49537d768881042ed5ba","versionType":"git"},{"lessThan":"df45337587db21c502fe5251d3bcc7887428f4fb","status":"affected","version":"0d3ff067331ef84e7e7f49537d768881042ed5ba","versionType":"git"},{"lessThan":"4ff3d9fd71c7bc2fc81afdac1970d9c55a5c0dea","status":"affected","version":"0d3ff067331ef84e7e7f49537d768881042ed5ba","versionType":"git"},{"lessThan":"761eda315a6e1fda3e8e2185b28430771fb1ac29","status":"affected","version":"0d3ff067331ef84e7e7f49537d768881042ed5ba","versionType":"git"}]},{"defaultStatus":"affected","product":"Linux","programFiles":["arch/powerpc/kexec/file_load_64.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"6.11"},{"lessThan":"6.11","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"6.12.*","status":"unaffected","version":"6.12.110","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.51","versionType":"semver"},{"lessThanOrEqual":"7.2.*","status":"unaffected","version":"7.2.5","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.3-rc1","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.12.110","versionStartIncluding":"6.11","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.18.51","versionStartIncluding":"6.11","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.2.5","versionStartIncluding":"6.11","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.3-rc1","versionStartIncluding":"6.11","vulnerable":true}],"negate":false,"operator":"OR"}]}],"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\npowerpc/kexec_file: Fix null-ptr-def in extra size calculation\n\nA static Sashiko AI review identified a potential NULL pointer\ndereference in kexec_extra_fdt_size_ppc64().\n\nOn platforms without any reserved memory regions,\nget_reserved_memory_ranges() can return 0 while leaving 'rmem'\nunallocated as NULL. Passing it directly leads to a kernel panic when\nevaluating 'rmem->nr_ranges'.\n\nAdd a NULL check for 'rmem' to prevent this crash."}],"providerMetadata":{"dateUpdated":"2026-09-16T10:32:45.336Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/11ef1c2a5dbe0bd8c1345f59bab7331d352f02cf"},{"url":"https://git.kernel.org/stable/c/df45337587db21c502fe5251d3bcc7887428f4fb"},{"url":"https://git.kernel.org/stable/c/4ff3d9fd71c7bc2fc81afdac1970d9c55a5c0dea"},{"url":"https://git.kernel.org/stable/c/761eda315a6e1fda3e8e2185b28430771fb1ac29"}],"title":"powerpc/kexec_file: Fix null-ptr-def in extra size calculation","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-89963","datePublished":"2026-09-16T10:32:45.336Z","dateReserved":"2026-09-11T19:38:34.778Z","dateUpdated":"2026-09-16T10:32:45.336Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-09-16 11:17:06","lastModifiedDate":"2026-09-16 11:17:06","problem_types":[],"metrics":[],"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"89963","Ordinal":"1","Title":"powerpc/kexec_file: Fix null-ptr-def in extra size calculation","CVE":"CVE-2026-89963","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"89963","Ordinal":"1","NoteData":"In the Linux kernel, the following vulnerability has been resolved:\n\npowerpc/kexec_file: Fix null-ptr-def in extra size calculation\n\nA static Sashiko AI review identified a potential NULL pointer\ndereference in kexec_extra_fdt_size_ppc64().\n\nOn platforms without any reserved memory regions,\nget_reserved_memory_ranges() can return 0 while leaving 'rmem'\nunallocated as NULL. Passing it directly leads to a kernel panic when\nevaluating 'rmem->nr_ranges'.\n\nAdd a NULL check for 'rmem' to prevent this crash.","Type":"Description","Title":"powerpc/kexec_file: Fix null-ptr-def in extra size calculation"}]}}}