{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-98854","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","state":"PUBLISHED","assignerShortName":"Linux","dateReserved":"2026-09-25T10:25:14.376Z","datePublished":"2026-10-18T15:51:06.167Z","dateUpdated":"2026-10-30T12:40:15.237Z"},"containers":{"cna":{"providerMetadata":{"orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux","dateUpdated":"2026-10-30T12:40:15.237Z"},"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nof/overlay: only treat a positive changeset id as registered\n\nof_overlay_fdt_apply() stores the idr_alloc() return value in\novcs->id before checking it. On failure the stored id is negative,\nfree_overlay_changeset()'s \"if (ovcs->id)\" check passes, idr_remove()\nis called with a negative id and list_del() runs on ovcs->ovcs_list,\nwhich is not initialized until after the id allocation. An allocation\nfailure at that point dereferences NULL.\n\nMake free_overlay_changeset() treat only a strict-positive id as\nregistered. The rest of the function already copes with a\npartially-initialized ovcs, so the error path stays a plain\ngoto err_free_ovcs."}],"affected":[{"product":"Linux","vendor":"Linux","defaultStatus":"unaffected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/of/overlay.c"],"versions":[{"version":"61b4de4e0b384f4a22c55c3bada604da49cec4e1","lessThan":"7af5d66d0514b8f1d759d0e32b9d4c5d26263e4a","status":"affected","versionType":"git"},{"version":"61b4de4e0b384f4a22c55c3bada604da49cec4e1","lessThan":"71065f3d6864a101b77e7af84566757c4df415a0","status":"affected","versionType":"git"},{"version":"61b4de4e0b384f4a22c55c3bada604da49cec4e1","lessThan":"cc688475c56d34a2b584141f9544cbe23360080d","status":"affected","versionType":"git"},{"version":"61b4de4e0b384f4a22c55c3bada604da49cec4e1","lessThan":"c08a54df9d33dcd6ff089adc9434b2c008af3a39","status":"affected","versionType":"git"},{"version":"61b4de4e0b384f4a22c55c3bada604da49cec4e1","lessThan":"0d1525fdcd3355672b7485d61e55df6824ab5ad1","status":"affected","versionType":"git"},{"version":"61b4de4e0b384f4a22c55c3bada604da49cec4e1","lessThan":"c875407c34dadaef0599834ad9c815f4c9f50d15","status":"affected","versionType":"git"},{"version":"61b4de4e0b384f4a22c55c3bada604da49cec4e1","lessThan":"44081d708b5b885487bac792db78324b7b4c267d","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/of/overlay.c"],"versions":[{"version":"4.15","status":"affected"},{"version":"0","lessThan":"4.15","status":"unaffected","versionType":"semver"},{"version":"5.15.224","lessThanOrEqual":"5.15.*","status":"unaffected","versionType":"semver"},{"version":"6.1.191","lessThanOrEqual":"6.1.*","status":"unaffected","versionType":"semver"},{"version":"6.6.160","lessThanOrEqual":"6.6.*","status":"unaffected","versionType":"semver"},{"version":"6.12.113","lessThanOrEqual":"6.12.*","status":"unaffected","versionType":"semver"},{"version":"6.18.56","lessThanOrEqual":"6.18.*","status":"unaffected","versionType":"semver"},{"version":"7.2.10","lessThanOrEqual":"7.2.*","status":"unaffected","versionType":"semver"},{"version":"7.3","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":"4.15","versionEndExcluding":"5.15.224"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.15","versionEndExcluding":"6.1.191"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.15","versionEndExcluding":"6.6.160"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.15","versionEndExcluding":"6.12.113"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.15","versionEndExcluding":"6.18.56"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.15","versionEndExcluding":"7.2.10"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.15","versionEndExcluding":"7.3"}]}]}],"references":[{"url":"https://git.kernel.org/stable/c/7af5d66d0514b8f1d759d0e32b9d4c5d26263e4a"},{"url":"https://git.kernel.org/stable/c/71065f3d6864a101b77e7af84566757c4df415a0"},{"url":"https://git.kernel.org/stable/c/cc688475c56d34a2b584141f9544cbe23360080d"},{"url":"https://git.kernel.org/stable/c/c08a54df9d33dcd6ff089adc9434b2c008af3a39"},{"url":"https://git.kernel.org/stable/c/0d1525fdcd3355672b7485d61e55df6824ab5ad1"},{"url":"https://git.kernel.org/stable/c/c875407c34dadaef0599834ad9c815f4c9f50d15"},{"url":"https://git.kernel.org/stable/c/44081d708b5b885487bac792db78324b7b4c267d"}],"title":"of/overlay: only treat a positive changeset id as registered","x_generator":{"engine":"bippy-1.2.0"}}}}