{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-89963","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","state":"PUBLISHED","assignerShortName":"Linux","dateReserved":"2026-09-11T19:38:34.778Z","datePublished":"2026-09-16T10:32:45.336Z","dateUpdated":"2026-09-16T10:32:45.336Z"},"containers":{"cna":{"providerMetadata":{"orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux","dateUpdated":"2026-09-16T10:32:45.336Z"},"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."}],"affected":[{"product":"Linux","vendor":"Linux","defaultStatus":"unaffected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["arch/powerpc/kexec/file_load_64.c"],"versions":[{"version":"0d3ff067331ef84e7e7f49537d768881042ed5ba","lessThan":"11ef1c2a5dbe0bd8c1345f59bab7331d352f02cf","status":"affected","versionType":"git"},{"version":"0d3ff067331ef84e7e7f49537d768881042ed5ba","lessThan":"df45337587db21c502fe5251d3bcc7887428f4fb","status":"affected","versionType":"git"},{"version":"0d3ff067331ef84e7e7f49537d768881042ed5ba","lessThan":"4ff3d9fd71c7bc2fc81afdac1970d9c55a5c0dea","status":"affected","versionType":"git"},{"version":"0d3ff067331ef84e7e7f49537d768881042ed5ba","lessThan":"761eda315a6e1fda3e8e2185b28430771fb1ac29","status":"affected","versionType":"git"}]},{"product":"Linux","vendor":"Linux","defaultStatus":"affected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["arch/powerpc/kexec/file_load_64.c"],"versions":[{"version":"6.11","status":"affected"},{"version":"0","lessThan":"6.11","status":"unaffected","versionType":"semver"},{"version":"6.12.110","lessThanOrEqual":"6.12.*","status":"unaffected","versionType":"semver"},{"version":"6.18.51","lessThanOrEqual":"6.18.*","status":"unaffected","versionType":"semver"},{"version":"7.2.5","lessThanOrEqual":"7.2.*","status":"unaffected","versionType":"semver"},{"version":"7.3-rc1","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":"6.11","versionEndExcluding":"6.12.110"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.11","versionEndExcluding":"6.18.51"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.11","versionEndExcluding":"7.2.5"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.11","versionEndExcluding":"7.3-rc1"}]}]}],"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"}}}}