{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2023-1829","assignerOrgId":"14ed7db2-1595-443d-9d34-6215bf890778","state":"PUBLISHED","assignerShortName":"Google","dateReserved":"2023-04-04T10:32:43.055Z","datePublished":"2023-04-12T11:16:59.101Z","dateUpdated":"2026-07-29T13:57:59.339Z"},"containers":{"cna":{"providerMetadata":{"orgId":"14ed7db2-1595-443d-9d34-6215bf890778","shortName":"Google","dateUpdated":"2026-07-29T13:57:59.339Z"},"title":"Use-after-free in tcindex (traffic control index filter) in the Linux Kernel","datePublic":"2023-02-16T08:27:00.000Z","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":"Linux Kernel","platforms":["Linux"],"packageName":"kernel","repo":"https://git.kernel.org","versions":[{"status":"affected","version":"3.8.0","lessThan":"4.14.308","versionType":"semver"},{"status":"affected","version":"4.15.0","lessThan":"4.19.276","versionType":"semver"},{"status":"affected","version":"4.20.0","lessThan":"5.4.235","versionType":"semver"},{"status":"affected","version":"5.5.0","lessThan":"5.10.173","versionType":"semver"},{"status":"affected","version":"5.11.0","lessThan":"5.15.100","versionType":"semver"},{"status":"affected","version":"5.16.0","lessThan":"6.1.18","versionType":"semver"},{"status":"affected","version":"6.2.0","lessThan":"6.2.5","versionType":"semver"},{"status":"unaffected","version":"6.3.0","versionType":"semver"},{"status":"unaffected","version":"8c710f75256bb3cf05ac7b1672c82b92c43f3d28","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 traffic control index filter (tcindex) can be exploited to achieve local privilege escalation. The tcindex_delete function which does not properly deactivate filters in case of a perfect hashes while deleting the underlying structure which can later lead to double freeing the structure. A local attacker user can use this vulnerability to elevate its privileges to root.\n\n\nWe recommend upgrading past commit   8c710f75256bb3cf05ac7b1672c82b92c43f3d28 https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/ .","supportingMedia":[{"type":"text/html","base64":false,"value":"A use-after-free vulnerability in the Linux Kernel traffic control index filter (tcindex) <span>can be exploited to achieve local privilege escalation</span>.&nbsp;<span><span>The tcindex_delete function which does not properly deactivate filters in case of a perfect hashes while deleting the underlying structure which can later lead to double freeing the structure.&nbsp;</span></span><span>A local attacker user can use this vulnerability to elevate its privileges to root.<br></span><p><span>We recommend upgrading past commit </span> <a target=\"_blank\" rel=\"nofollow\" href=\"https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=8c710f75256bb3cf05ac7b1672c82b92c43f3d28\">8c710f75256bb3cf05ac7b1672c82b92c43f3d28</a>.</p>"}]}],"references":[{"url":"https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=8c710f75256bb3cf05ac7b1672c82b92c43f3d28"},{"url":"https://kernel.dance/#8c710f75256bb3cf05ac7b1672c82b92c43f3d28"},{"url":"https://lists.debian.org/debian-lts-announce/2023/05/msg00005.html"},{"url":"https://lists.debian.org/debian-lts-announce/2023/05/msg00006.html"},{"url":"https://security.netapp.com/advisory/ntap-20230601-0001/"}],"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 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