{"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": "2026-09-11T19:45:58.149Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-09-11T19:45:58.149Z"}, "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": "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": "6.12.109", "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": "6.12.109"}, {"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/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"}}}}

{}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["fs/nfsd/flexfilelayoutxdr.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "74015b7be806ad9e21d46f7bd2831df280c6c783", "status": "affected", "version": "efcae97fa425ca6db9d126e37daccf2d7225cb09", "versionType": "git"}, {"lessThan": "41ebca28e17f84293650598f86bd69532ec1a8e0", "status": "affected", "version": "efcae97fa425ca6db9d126e37daccf2d7225cb09", "versionType": "git"}, {"lessThan": "62e5949f0dd5ec837af144860ff908369df4c7c9", "status": "affected", "version": "efcae97fa425ca6db9d126e37daccf2d7225cb09", "versionType": "git"}, {"lessThan": "8b989aaec85e1293a871d602590c951fe44b8647", "status": "affected", "version": "efcae97fa425ca6db9d126e37daccf2d7225cb09", "versionType": "git"}]}, {"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["fs/nfsd/flexfilelayoutxdr.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "6.12.109", "status": "affected", "version": "6.4.16", "versionType": "semver"}, {"lessThan": "6.18.50", "status": "affected", "version": "6.4.16", "versionType": "semver"}, {"lessThan": "7.2.4", "status": "affected", "version": "6.4.16", "versionType": "semver"}, {"lessThan": "7.3-rc1", "status": "affected", "version": "6.4.16", "versionType": "semver"}]}], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "cveTags": [], "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."}], "id": "CVE-2026-89673", "lastModified": "2026-09-11T20:19:53.890", "metrics": {}, "published": "2026-09-11T20:19:53.890", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/41ebca28e17f84293650598f86bd69532ec1a8e0"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/62e5949f0dd5ec837af144860ff908369df4c7c9"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/74015b7be806ad9e21d46f7bd2831df280c6c783"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/8b989aaec85e1293a871d602590c951fe44b8647"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received"}

{"bugzilla": {"description": "kernel: Linux Kernel (nfsd): Information disclosure due to XDR padding calculation error", "id": "2532322", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2532322"}, "csaw": false, "cvss3": {"cvss3_base_score": "5.9", "cvss3_scoring_vector": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:H", "status": "draft"}, "cwe": "CWE-125", "details": ["A flaw was found in the Linux kernel's NFS daemon (nfsd). A remote attacker could exploit an error in the XDR (External Data Representation) padding calculation within the `ff_encode_getdeviceinfo` function. This mismatch between reserved and actual data size leads to the leakage of stale reply-page content to the client, potentially disclosing sensitive information. It also causes misalignment in subsequent data decoding."], "name": "CVE-2026-89673", "public_date": "2026-09-11T19:45:58Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-89673\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-89673\nhttps://git.kernel.org/stable/c/41ebca28e17f84293650598f86bd69532ec1a8e0\nhttps://git.kernel.org/stable/c/62e5949f0dd5ec837af144860ff908369df4c7c9\nhttps://git.kernel.org/stable/c/74015b7be806ad9e21d46f7bd2831df280c6c783\nhttps://git.kernel.org/stable/c/8b989aaec85e1293a871d602590c951fe44b8647"], "threat_severity": "Moderate"}

{}