{ "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) can be exploited to achieve local privilege escalationThe 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.

We recommend upgrading past commit 8c710f75256bb3cf05ac7b1672c82b92c43f3d28.

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