CVE-2026-90327

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-90327", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-09-11T19:38:34.802Z", "datePublished": "2026-09-17T16:08:42.017Z", "dateUpdated": "2026-10-19T09:01:44.321Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-10-19T09:01:44.321Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nphonet: pep: do not write beyond optlen in getsockopt\n\npep_getsockopt() clamps the reported length to the caller's buffer with\nmin_t(), but then stores the value with put_user(val, (int __user *)\noptval), which always writes sizeof(int) bytes. A getsockopt() call with\nan optlen smaller than sizeof(int) thus reports the clamped length yet\nwrites a full int, one to three bytes past the user buffer.\n\nWrite the value with copy_to_user() bounded by len, so at most optlen\nbytes are copied, matching the length reported back to userspace."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["net/phonet/pep.c"], "versions": [{"version": "02a47617cdce440f60c71a51f3a93f9f5fcc5a7a", "lessThan": "6054fed6bad08b6d03973e8ffca7f0c9394d1c30", "status": "affected", "versionType": "git"}, {"version": "02a47617cdce440f60c71a51f3a93f9f5fcc5a7a", "lessThan": "eac733a0b6fe0a52d91f9f623425735ed50ac6c2", "status": "affected", "versionType": "git"}, {"version": "02a47617cdce440f60c71a51f3a93f9f5fcc5a7a", "lessThan": "95e0ed2439dd1792eb454c68ae8d10f30ffe3bff", "status": "affected", "versionType": "git"}, {"version": "02a47617cdce440f60c71a51f3a93f9f5fcc5a7a", "lessThan": "056eea1a2068ad2fb7c3093c5f1095268f87d0c7", "status": "affected", "versionType": "git"}, {"version": "02a47617cdce440f60c71a51f3a93f9f5fcc5a7a", "lessThan": "1bf499e438da80455e258049bce60ffb3a53f3fa", "status": "affected", "versionType": "git"}, {"version": "02a47617cdce440f60c71a51f3a93f9f5fcc5a7a", "lessThan": "c4487e4d5309de587479ecc2f5173b49586f46f4", "status": "affected", "versionType": "git"}, {"version": "02a47617cdce440f60c71a51f3a93f9f5fcc5a7a", "lessThan": "f97022fefe6eb06ee18549d603420440f2959802", "status": "affected", "versionType": "git"}, {"version": "02a47617cdce440f60c71a51f3a93f9f5fcc5a7a", "lessThan": "77e5eb0e192aec6710c03ca8144582fd2af36ca4", "status": "affected", "versionType": "git"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["net/phonet/pep.c"], "versions": [{"version": "2.6.28", "status": "affected"}, {"version": "0", "lessThan": "2.6.28", "status": "unaffected", "versionType": "semver"}, {"version": "5.10.270", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.15.221", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.1.188", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.6.157", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.110", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.52", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.2.6", "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": "2.6.28", "versionEndExcluding": "5.10.270"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.28", "versionEndExcluding": "5.15.221"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.28", "versionEndExcluding": "6.1.188"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.28", "versionEndExcluding": "6.6.157"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.28", "versionEndExcluding": "6.12.110"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.28", "versionEndExcluding": "6.18.52"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.28", "versionEndExcluding": "7.2.6"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.28", "versionEndExcluding": "7.3"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/6054fed6bad08b6d03973e8ffca7f0c9394d1c30"}, {"url": "https://git.kernel.org/stable/c/eac733a0b6fe0a52d91f9f623425735ed50ac6c2"}, {"url": "https://git.kernel.org/stable/c/95e0ed2439dd1792eb454c68ae8d10f30ffe3bff"}, {"url": "https://git.kernel.org/stable/c/056eea1a2068ad2fb7c3093c5f1095268f87d0c7"}, {"url": "https://git.kernel.org/stable/c/1bf499e438da80455e258049bce60ffb3a53f3fa"}, {"url": "https://git.kernel.org/stable/c/c4487e4d5309de587479ecc2f5173b49586f46f4"}, {"url": "https://git.kernel.org/stable/c/f97022fefe6eb06ee18549d603420440f2959802"}, {"url": "https://git.kernel.org/stable/c/77e5eb0e192aec6710c03ca8144582fd2af36ca4"}], "title": "phonet: pep: do not write beyond optlen in getsockopt", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["net/phonet/pep.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "6054fed6bad08b6d03973e8ffca7f0c9394d1c30", "status": "affected", "version": "02a47617cdce440f60c71a51f3a93f9f5fcc5a7a", "versionType": "git"}, {"lessThan": "eac733a0b6fe0a52d91f9f623425735ed50ac6c2", "status": "affected", "version": "02a47617cdce440f60c71a51f3a93f9f5fcc5a7a", "versionType": "git"}, {"lessThan": "95e0ed2439dd1792eb454c68ae8d10f30ffe3bff", "status": "affected", "version": "02a47617cdce440f60c71a51f3a93f9f5fcc5a7a", "versionType": "git"}, {"lessThan": "056eea1a2068ad2fb7c3093c5f1095268f87d0c7", "status": "affected", "version": "02a47617cdce440f60c71a51f3a93f9f5fcc5a7a", "versionType": "git"}, {"lessThan": "1bf499e438da80455e258049bce60ffb3a53f3fa", "status": "affected", "version": "02a47617cdce440f60c71a51f3a93f9f5fcc5a7a", "versionType": "git"}, {"lessThan": "c4487e4d5309de587479ecc2f5173b49586f46f4", "status": "affected", "version": "02a47617cdce440f60c71a51f3a93f9f5fcc5a7a", "versionType": "git"}, {"lessThan": "f97022fefe6eb06ee18549d603420440f2959802", "status": "affected", "version": "02a47617cdce440f60c71a51f3a93f9f5fcc5a7a", "versionType": "git"}, {"lessThan": "77e5eb0e192aec6710c03ca8144582fd2af36ca4", "status": "affected", "version": "02a47617cdce440f60c71a51f3a93f9f5fcc5a7a", "versionType": "git"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["net/phonet/pep.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "2.6.28"}, {"lessThan": "2.6.28", "status": "unaffected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "5.10.*", "status": "unaffected", "version": "5.10.270", "versionType": "semver"}, {"lessThanOrEqual": "5.15.*", "status": "unaffected", "version": "5.15.221", "versionType": "semver"}, {"lessThanOrEqual": "6.1.*", "status": "unaffected", "version": "6.1.188", "versionType": "semver"}, {"lessThanOrEqual": "6.6.*", "status": "unaffected", "version": "6.6.157", "versionType": "semver"}, {"lessThanOrEqual": "6.12.*", "status": "unaffected", "version": "6.12.110", "versionType": "semver"}, {"lessThanOrEqual": "6.18.*", "status": "unaffected", "version": "6.18.52", "versionType": "semver"}, {"lessThanOrEqual": "7.2.*", "status": "unaffected", "version": "7.2.6", "versionType": "semver"}, {"lessThanOrEqual": "*", "status": "unaffected", "version": "7.3", "versionType": "original_commit_for_fix"}]}], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nphonet: pep: do not write beyond optlen in getsockopt\n\npep_getsockopt() clamps the reported length to the caller's buffer with\nmin_t(), but then stores the value with put_user(val, (int __user *)\noptval), which always writes sizeof(int) bytes. A getsockopt() call with\nan optlen smaller than sizeof(int) thus reports the clamped length yet\nwrites a full int, one to three bytes past the user buffer.\n\nWrite the value with copy_to_user() bounded by len, so at most optlen\nbytes are copied, matching the length reported back to userspace."}], "id": "CVE-2026-90327", "lastModified": "2026-10-19T09:19:26.783", "metrics": {}, "published": "2026-09-17T17:17:30.800", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/056eea1a2068ad2fb7c3093c5f1095268f87d0c7"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/1bf499e438da80455e258049bce60ffb3a53f3fa"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/6054fed6bad08b6d03973e8ffca7f0c9394d1c30"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/77e5eb0e192aec6710c03ca8144582fd2af36ca4"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/95e0ed2439dd1792eb454c68ae8d10f30ffe3bff"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/c4487e4d5309de587479ecc2f5173b49586f46f4"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/eac733a0b6fe0a52d91f9f623425735ed50ac6c2"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/f97022fefe6eb06ee18549d603420440f2959802"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received"}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[02a47617cdce440f60c71a51f3a93f9f5fcc5a7a,6054fed6bad08b6d03973e8ffca7f0c9394d1c30)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[02a47617cdce440f60c71a51f3a93f9f5fcc5a7a,eac733a0b6fe0a52d91f9f623425735ed50ac6c2)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[02a47617cdce440f60c71a51f3a93f9f5fcc5a7a,95e0ed2439dd1792eb454c68ae8d10f30ffe3bff)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[02a47617cdce440f60c71a51f3a93f9f5fcc5a7a,056eea1a2068ad2fb7c3093c5f1095268f87d0c7)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[02a47617cdce440f60c71a51f3a93f9f5fcc5a7a,1bf499e438da80455e258049bce60ffb3a53f3fa)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[02a47617cdce440f60c71a51f3a93f9f5fcc5a7a,c4487e4d5309de587479ecc2f5173b49586f46f4)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[02a47617cdce440f60c71a51f3a93f9f5fcc5a7a,f97022fefe6eb06ee18549d603420440f2959802)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[02a47617cdce440f60c71a51f3a93f9f5fcc5a7a,77e5eb0e192aec6710c03ca8144582fd2af36ca4)"}}], "enrichment": {"confidence": 99.0, "confidence_source": "inferred", "scores": [{"score": 99.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}, {"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "2.6.28"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[0,2.6.28)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[5.10.270,5.10.*]"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[5.15.221,5.15.*]"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[6.1.188,6.1.*]"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[6.6.157,6.6.*]"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[6.12.110,6.12.*]"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[6.18.52,6.18.*]"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[7.2.6,7.2.*]"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[7.3-rc1,*]"}}], "enrichment": {"confidence": 99.0, "confidence_source": "inferred", "scores": [{"score": 99.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}], "created": "2026-09-19T04:30:16.553247+00:00", "updated": "2026-09-19T05:00:09.575752+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"], "weaknesses": ["CWE-787"]}