{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-89673","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","state":"PUBLISHED","assignerShortName":"Linux","dateReserved":"2026-09-11T19:38:34.746Z","datePublished":"2026-09-11T19:45:58.149Z","dateUpdated":"2026-09-14T12:01:58.863Z"},"containers":{"cna":{"providerMetadata":{"orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux","dateUpdated":"2026-09-14T12:01:58.863Z"},"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nnfsd: fix XDR padding calculation in ff_encode_getdeviceinfo\n\nnfsd4_ff_encode_getdeviceinfo() computes the da_addr_body reservation\nas 16 + netid_len + addr_len, but the subsequent xdr_encode_opaque()\ncalls emit 8 + round_up(netid_len, 4) + round_up(addr_len, 4) bytes.\nThe mismatch means the declared da_addr_body length exceeds the actual\nencoded data by 2-8 bytes on every flexfile GETDEVICEINFO reply,\nleaking stale reply-page content to the client and mis-aligning the\nsubsequent version list decode.\n\nUse xdr_align_size() for each string length to match what\nxdr_encode_opaque() actually writes."}],"affected":[{"product":"Linux","vendor":"Linux","defaultStatus":"unaffected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["fs/nfsd/flexfilelayoutxdr.c"],"versions":[{"version":"efcae97fa425ca6db9d126e37daccf2d7225cb09","lessThan":"88bce7e326c368d7df15126ccac537e54bebd467","status":"affected","versionType":"git"},{"version":"efcae97fa425ca6db9d126e37daccf2d7225cb09","lessThan":"74015b7be806ad9e21d46f7bd2831df280c6c783","status":"affected","versionType":"git"},{"version":"efcae97fa425ca6db9d126e37daccf2d7225cb09","lessThan":"41ebca28e17f84293650598f86bd69532ec1a8e0","status":"affected","versionType":"git"},{"version":"efcae97fa425ca6db9d126e37daccf2d7225cb09","lessThan":"62e5949f0dd5ec837af144860ff908369df4c7c9","status":"affected","versionType":"git"},{"version":"efcae97fa425ca6db9d126e37daccf2d7225cb09","lessThan":"8b989aaec85e1293a871d602590c951fe44b8647","status":"affected","versionType":"git"}]},{"product":"Linux","vendor":"Linux","defaultStatus":"unaffected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["fs/nfsd/flexfilelayoutxdr.c"],"versions":[{"version":"6.4.16","lessThan":"6.6.157","status":"affected","versionType":"semver"},{"version":"6.4.16","lessThan":"6.12.109","status":"affected","versionType":"semver"},{"version":"6.4.16","lessThan":"6.18.50","status":"affected","versionType":"semver"},{"version":"6.4.16","lessThan":"7.2.4","status":"affected","versionType":"semver"},{"version":"6.4.16","lessThan":"7.3-rc1","status":"affected","versionType":"semver"}]}],"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.4.16","versionEndExcluding":"6.6.157"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.4.16","versionEndExcluding":"6.12.109"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.4.16","versionEndExcluding":"6.18.50"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.4.16","versionEndExcluding":"7.2.4"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.4.16","versionEndExcluding":"7.3-rc1"}]}]}],"references":[{"url":"https://git.kernel.org/stable/c/88bce7e326c368d7df15126ccac537e54bebd467"},{"url":"https://git.kernel.org/stable/c/74015b7be806ad9e21d46f7bd2831df280c6c783"},{"url":"https://git.kernel.org/stable/c/41ebca28e17f84293650598f86bd69532ec1a8e0"},{"url":"https://git.kernel.org/stable/c/62e5949f0dd5ec837af144860ff908369df4c7c9"},{"url":"https://git.kernel.org/stable/c/8b989aaec85e1293a871d602590c951fe44b8647"}],"title":"nfsd: fix XDR padding calculation in ff_encode_getdeviceinfo","x_generator":{"engine":"bippy-1.2.0"}}}}