{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2023-1281", "assignerOrgId": "14ed7db2-1595-443d-9d34-6215bf890778", "state": "PUBLISHED", "assignerShortName": "Google", "dateReserved": "2023-03-08T20:18:23.204Z", "datePublished": "2023-03-22T13:18:55.460Z", "dateUpdated": "2026-07-30T16:28:51.624Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "14ed7db2-1595-443d-9d34-6215bf890778", "shortName": "Google", "dateUpdated": "2026-07-30T16:28:51.624Z" }, "title": "UAF in Linux kernel's tcindex (traffic control index filter) implementation", "datePublic": "2023-02-09T15:37:00.000Z", "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": "4.14.0", "lessThan": "5.10.169", "versionType": "semver" }, { "status": "affected", "version": "5.11.0", "lessThan": "5.15.95", "versionType": "semver" }, { "status": "affected", "version": "5.16.0", "lessThan": "6.1.13", "versionType": "semver" }, { "status": "unaffected", "version": "6.2.0", "versionType": "semver" }, { "status": "unaffected", "version": "ee059170b1f7e94e55fa6cadee544e176a6e59c2", "versionType": "git" } ], "defaultStatus": "unaffected", "cpes": [ "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*" ] } ], "descriptions": [ { "lang": "en", "value": "Use After Free vulnerability in Linux kernel traffic control index filter (tcindex) allows Privilege Escalation. The imperfect hash area can be updated while packets are traversing, which will cause a use-after-free when 'tcf_exts_exec()' is called with the destroyed tcf_ext. A local attacker user can use this vulnerability to elevate its privileges to root.\n\n\nThis issue affects Linux Kernel: from 4.14 before git commit ee059170b1f7e94e55fa6cadee544e176a6e59c2.", "supportingMedia": [ { "type": "text/html", "base64": false, "value": "Use After Free vulnerability in Linux kernel traffic control index filter (tcindex) allows Privilege Escalation. The imperfect hash area can be updated while packets are traversing, which will cause a use-after-free when 'tcf_exts_exec()' is called with the destroyed tcf_ext. A local attacker user can use this vulnerability to elevate its privileges to root.

This issue affects Linux Kernel: from 4.14 before git commit ee059170b1f7e94e55fa6cadee544e176a6e59c2.

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