{"id":"CVE-2026-89673","revision":null,"records":[{"revision":"7e995892990140d2a136dad6eec7f1ca","observedAt":"2026-10-24T16:17:04.479+00:00","statement":{"source":"cve-program","id":"CVE-2026-89673","aliases":[],"title":"nfsd: fix XDR padding calculation in ff_encode_getdeviceinfo","description":"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.","state":0,"publishedAt":"2026-09-11T19:45:58.149+00:00","modifiedAt":"2026-10-24T14:15:11.211+00:00","affected":[{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n \"product\": \"Linux\",\n \"vendor\": \"Linux\",\n \"defaultStatus\": \"unaffected\",\n \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n \"programFiles\": [\n \"fs/nfsd/flexfilelayoutxdr.c\"\n ],\n \"versions\": [\n {\n \"version\": \"3f1a2b0b2d575f39ff0bedb5411822fe7446a805\",\n \"lessThan\": \"356decf074b82bac5564568203c12426dcea3470\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"19a648a07572c70fbe16faf0fafaf3dce9fd998a\",\n \"lessThan\": \"15460c8e6c9bc92cda8f68bc419ac082300ab3d6\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"6d08bd22fa2941a4d5ef45ed115dd00e484a93d7\",\n \"lessThan\": \"9be67a6be48ddf2ebaa98c0df671690b8f9666e7\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"6372e2ee629894433fe6107d7048536a3280a284\",\n \"lessThan\": \"88bce7e326c368d7df15126ccac537e54bebd467\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"6372e2ee629894433fe6107d7048536a3280a284\",\n \"lessThan\": \"74015b7be806ad9e21d46f7bd2831df280c6c783\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"6372e2ee629894433fe6107d7048536a3280a284\",\n \"lessThan\": \"41ebca28e17f84293650598f86bd69532ec1a8e0\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"6372e2ee629894433fe6107d7048536a3280a284\",\n \"lessThan\": \"62e5949f0dd5ec837af144860ff908369df4c7c9\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"6372e2ee629894433fe6107d7048536a3280a284\",\n \"lessThan\": \"8b989aaec85e1293a871d602590c951fe44b8647\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"82e36f0c287769a0430268739a71dbd56df0e679\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"6370e66a71c4869247f8f406c2a8b2c43df8998f\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"16282aeca44bfac0d1ac3be6cd1a719d6ff3d749\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"efcae97fa425ca6db9d126e37daccf2d7225cb09\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"64c959d59c24c661bd5338e4e6f1f703d7c309a1\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"5.10.195\",\n \"lessThan\": \"5.10.270\",\n \"status\": \"affected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"5.15.132\",\n \"lessThan\": \"5.15.221\",\n \"status\": \"affected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"6.1.53\",\n \"lessThan\": \"6.1.188\",\n \"status\": \"affected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"4.14.326\",\n \"lessThan\": \"4.15\",\n \"status\": \"affected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"4.19.295\",\n \"lessThan\": \"4.20\",\n \"status\": \"affected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"5.4.257\",\n \"lessThan\": \"5.5\",\n \"status\": \"affected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"6.4.16\",\n \"lessThan\": \"6.5\",\n \"status\": \"affected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"6.5.3\",\n \"lessThan\": \"6.6\",\n \"status\": \"affected\",\n \"versionType\": \"semver\"\n }\n ]\n }"},{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n \"product\": \"Linux\",\n \"vendor\": \"Linux\",\n \"defaultStatus\": \"affected\",\n \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n \"programFiles\": [\n \"fs/nfsd/flexfilelayoutxdr.c\"\n ],\n \"versions\": [\n {\n \"version\": \"6.6\",\n \"status\": \"affected\"\n },\n {\n \"version\": \"0\",\n \"lessThan\": \"6.6\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"5.10.270\",\n \"lessThanOrEqual\": \"5.10.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"5.15.221\",\n \"lessThanOrEqual\": \"5.15.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"6.1.188\",\n \"lessThanOrEqual\": \"6.1.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"6.6.157\",\n \"lessThanOrEqual\": \"6.6.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"6.12.109\",\n \"lessThanOrEqual\": \"6.12.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"6.18.50\",\n \"lessThanOrEqual\": \"6.18.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"7.2.4\",\n \"lessThanOrEqual\": \"7.2.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"7.3\",\n \"lessThanOrEqual\": \"*\",\n \"status\": \"unaffected\",\n \"versionType\": \"original_commit_for_fix\"\n }\n ]\n }"}],"metrics":[],"references":["https://git.kernel.org/stable/c/356decf074b82bac5564568203c12426dcea3470","https://git.kernel.org/stable/c/15460c8e6c9bc92cda8f68bc419ac082300ab3d6","https://git.kernel.org/stable/c/9be67a6be48ddf2ebaa98c0df671690b8f9666e7","https://git.kernel.org/stable/c/88bce7e326c368d7df15126ccac537e54bebd467","https://git.kernel.org/stable/c/74015b7be806ad9e21d46f7bd2831df280c6c783","https://git.kernel.org/stable/c/41ebca28e17f84293650598f86bd69532ec1a8e0","https://git.kernel.org/stable/c/62e5949f0dd5ec837af144860ff908369df4c7c9","https://git.kernel.org/stable/c/8b989aaec85e1293a871d602590c951fe44b8647"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-89673","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-89673","identifiers":["CVE-2026-89673"]},"retained":false,"historicalAffected":[]}],"coverage":[{"source":"cisa-kev:global","scope":"Complete CISA KEV catalog; all vendors. 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