{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2023-3609","assignerOrgId":"14ed7db2-1595-443d-9d34-6215bf890778","state":"PUBLISHED","assignerShortName":"Google","dateReserved":"2023-07-10T20:52:53.660Z","datePublished":"2023-07-21T20:47:12.172Z","dateUpdated":"2026-07-30T16:34:52.372Z"},"containers":{"cna":{"providerMetadata":{"orgId":"14ed7db2-1595-443d-9d34-6215bf890778","shortName":"Google","dateUpdated":"2026-07-30T16:34:52.372Z"},"title":"Use-after-free in Linux kernel's net/sched: cls_u32 component","datePublic":"2023-06-09T10:40:00.000Z","problemTypes":[{"descriptions":[{"lang":"en","cweId":"CWE-416","description":"CWE-416 Use After Free","type":"CWE"}]}],"impacts":[{"capecId":"CAPEC-233","descriptions":[{"lang":"en","value":"CAPEC-233 Privilege Escalation"}]}],"affected":[{"vendor":"Linux","product":"Kernel","platforms":["Linux"],"packageName":"kernel","repo":"https://git.kernel.org","versions":[{"status":"affected","version":"4.14.0","lessThan":"4.14.322","versionType":"semver"},{"status":"affected","version":"4.15.0","lessThan":"4.19.291","versionType":"semver"},{"status":"affected","version":"4.20.0","lessThan":"5.4.248","versionType":"semver"},{"status":"affected","version":"5.5.0","lessThan":"5.10.185","versionType":"semver"},{"status":"affected","version":"5.11.0","lessThan":"5.15.118","versionType":"semver"},{"status":"affected","version":"5.16.0","lessThan":"6.1.35","versionType":"semver"},{"status":"affected","version":"6.2.0","lessThan":"6.3.9","versionType":"semver"},{"status":"unaffected","version":"6.4.0","versionType":"semver"},{"status":"unaffected","version":"04c55383fa5689357bcdd2c8036725a55ed632bc","versionType":"git"}],"defaultStatus":"unaffected","cpes":["cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*"]}],"descriptions":[{"lang":"en","value":"A use-after-free vulnerability in the Linux kernel's net/sched: cls_u32 component can be exploited to achieve local privilege escalation.\n\n\n\nIf tcf_change_indev() fails, u32_set_parms() will immediately return an error after incrementing or decrementing the reference counter in tcf_bind_filter(). If an attacker can control the reference counter and set it to zero, they can cause the reference to be freed, leading to a use-after-free vulnerability.\n\n\n\nWe recommend upgrading past commit 04c55383fa5689357bcdd2c8036725a55ed632bc.","supportingMedia":[{"type":"text/html","base64":false,"value":"<p>A use-after-free vulnerability in the Linux kernel's net/sched: cls_u32 component can be exploited to achieve local privilege escalation.</p><p>If tcf_change_indev() fails, u32_set_parms() will immediately return an error after incrementing or decrementing the reference counter in tcf_bind_filter(). If an attacker can control the reference counter and set it to zero, they can cause the reference to be freed, leading to a use-after-free vulnerability.</p><p>We recommend upgrading past commit 04c55383fa5689357bcdd2c8036725a55ed632bc.</p>"}]}],"references":[{"url":"https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit?id=04c55383fa5689357bcdd2c8036725a55ed632bc","tags":["patch"]},{"url":"https://kernel.dance/04c55383fa5689357bcdd2c8036725a55ed632bc"},{"url":"https://security.netapp.com/advisory/ntap-20230818-0005/"},{"url":"https://www.debian.org/security/2023/dsa-5480"},{"url":"http://packetstormsecurity.com/files/175072/Kernel-Live-Patch-Security-Notice-LSN-0098-1.html"},{"url":"https://lists.debian.org/debian-lts-announce/2023/10/msg00027.html"},{"url":"http://packetstormsecurity.com/files/175963/Kernel-Live-Patch-Security-Notice-LSN-0099-1.html"},{"url":"https://lists.debian.org/debian-lts-announce/2024/01/msg00004.html"}],"metrics":[{"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}],"cvssV3_1":{"version":"3.1","attackVector":"LOCAL","attackComplexity":"LOW","privilegesRequired":"LOW","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"HIGH","availabilityImpact":"HIGH","baseSeverity":"HIGH","baseScore":7.8,"vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"}}],"source":{"discovery":"EXTERNAL"},"x_generator":{"engine":"Vulnogram 0.1.0-dev"}},"adp":[{"providerMetadata":{"orgId":"af854a3a-2127-422b-91ae-364da2661108","shortName":"CVE","dateUpdated":"2024-08-02T07:01:56.672Z"},"title":"CVE Program Container","references":[{"tags":["patch","x_transferred"],"url":"https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit?id=04c55383fa5689357bcdd2c8036725a55ed632bc"},{"url":"https://kernel.dance/04c55383fa5689357bcdd2c8036725a55ed632bc","tags":["x_transferred"]},{"url":"https://security.netapp.com/advisory/ntap-20230818-0005/","tags":["x_transferred"]},{"url":"https://www.debian.org/security/2023/dsa-5480","tags":["x_transferred"]},{"url":"http://packetstormsecurity.com/files/175072/Kernel-Live-Patch-Security-Notice-LSN-0098-1.html","tags":["x_transferred"]},{"url":"https://lists.debian.org/debian-lts-announce/2023/10/msg00027.html","tags":["x_transferred"]},{"url":"http://packetstormsecurity.com/files/175963/Kernel-Live-Patch-Security-Notice-LSN-0099-1.html","tags":["x_transferred"]},{"url":"https://lists.debian.org/debian-lts-announce/2024/01/msg00004.html","tags":["x_transferred"]}]},{"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2025-03-05T18:36:26.184616Z","id":"CVE-2023-3609","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"total"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2025-03-05T18:48:12.763Z"}}]}}