{"dataType":"CVE_RECORD","dataVersion":"5.1","cveMetadata":{"cveId":"CVE-2023-3776","assignerOrgId":"14ed7db2-1595-443d-9d34-6215bf890778","state":"PUBLISHED","assignerShortName":"Google","dateReserved":"2023-07-19T15:50:20.757Z","datePublished":"2023-07-21T20:49:53.667Z","dateUpdated":"2025-03-05T18:48:04.229Z"},"containers":{"cna":{"affected":[{"defaultStatus":"unaffected","packageName":"kernel","product":"Kernel","repo":"https://git.kernel.org","vendor":"Linux","versions":[{"lessThan":"6.5","status":"affected","version":"2.6","versionType":"custom"}]}],"credits":[{"lang":"en","type":"finder","user":"00000000-0000-4000-9000-000000000000","value":"Muhammad Alifa Ramdhan of STAR Labs SG"}],"datePublic":"2023-07-07T02:10:00.000Z","descriptions":[{"lang":"en","supportingMedia":[{"base64":false,"type":"text/html","value":"<p>A use-after-free vulnerability in the Linux kernel's net/sched: cls_fw component can be exploited to achieve local privilege escalation.</p><p>If tcf_change_indev() fails, fw_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 0323bce598eea038714f941ce2b22541c46d488f.</p>"}],"value":"A use-after-free vulnerability in the Linux kernel's net/sched: cls_fw component can be exploited to achieve local privilege escalation.\n\nIf tcf_change_indev() fails, fw_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\nWe recommend upgrading past commit 0323bce598eea038714f941ce2b22541c46d488f."}],"impacts":[{"capecId":"CAPEC-233","descriptions":[{"lang":"en","value":"CAPEC-233 Privilege Escalation"}]}],"metrics":[{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"LOCAL","availabilityImpact":"HIGH","baseScore":7.8,"baseSeverity":"HIGH","confidentialityImpact":"HIGH","integrityImpact":"HIGH","privilegesRequired":"LOW","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","version":"3.1"},"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}]}],"problemTypes":[{"descriptions":[{"cweId":"CWE-416","description":"CWE-416 Use After Free","lang":"en","type":"CWE"}]}],"providerMetadata":{"orgId":"14ed7db2-1595-443d-9d34-6215bf890778","shortName":"Google","dateUpdated":"2024-02-02T14:06:25.968Z"},"references":[{"tags":["patch"],"url":"https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit?id=0323bce598eea038714f941ce2b22541c46d488f"},{"url":"https://kernel.dance/0323bce598eea038714f941ce2b22541c46d488f"},{"url":"https://www.debian.org/security/2023/dsa-5480"},{"url":"https://www.debian.org/security/2023/dsa-5492"},{"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"},{"url":"https://security.netapp.com/advisory/ntap-20240202-0003/"}],"source":{"discovery":"EXTERNAL"},"title":"Use-after-free in Linux kernel's net/sched: cls_fw component","x_generator":{"engine":"Vulnogram 0.1.0-dev"}},"adp":[{"providerMetadata":{"orgId":"af854a3a-2127-422b-91ae-364da2661108","shortName":"CVE","dateUpdated":"2024-08-02T07:08:49.975Z"},"title":"CVE Program Container","references":[{"tags":["patch","x_transferred"],"url":"https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit?id=0323bce598eea038714f941ce2b22541c46d488f"},{"url":"https://kernel.dance/0323bce598eea038714f941ce2b22541c46d488f","tags":["x_transferred"]},{"url":"https://www.debian.org/security/2023/dsa-5480","tags":["x_transferred"]},{"url":"https://www.debian.org/security/2023/dsa-5492","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"]},{"url":"https://security.netapp.com/advisory/ntap-20240202-0003/","tags":["x_transferred"]}]},{"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2025-03-05T18:36:21.985284Z","id":"CVE-2023-3776","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":"2025-03-05T18:48:04.229Z"}}]}}