{"id":"CVE-2026-46153","title":"8021q: delete cleared egress QoS mappings","summary":"In the Linux kernel, the following vulnerability has been resolved:\n\n8021q: delete cleared egress QoS mappings\n\nvlan_dev_set_egress_priority() currently keeps cleared egress\npriority mappings in the hash as tombstones. Repeated set/clear…","severity":"none","vendor":"Linux","product":"Linux","affected":["Linux >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < a52e122c9e4d56ad9a03b32c915a199276d989c3","Linux >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 7dddc74af369478ba7f9bc136d0fc1dc4570cb66","Linux 2.6.12"],"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"partial","timestamp":"2026-11-06T16:10:11.587690Z"},"published":"2026-05-28","updated":"2026-11-06","sourceUpdated":"2026-11-06T16:13:41.502Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-46153","references":[{"url":"https://git.kernel.org/stable/c/a52e122c9e4d56ad9a03b32c915a199276d989c3"},{"url":"https://git.kernel.org/stable/c/7dddc74af369478ba7f9bc136d0fc1dc4570cb66"}],"tags":["cve.org"],"epss":0.00112,"epssPercentile":0.01387,"ingestedAt":"2026-11-06T16:57:43.330Z","slug":"CVE-2026-46153","body":"## Overview\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\n8021q: delete cleared egress QoS mappings\n\nvlan_dev_set_egress_priority() currently keeps cleared egress\npriority mappings in the hash as tombstones. Repeated set/clear cycles\nwith distinct skb priorities therefore accumulate mapping nodes until\ndevice teardown and leak memory.\n\nDelete mappings when vlan_prio is cleared instead of keeping tombstones.\nNow that the egress mapping lists are RCU protected, the node can be\nunlinked safely and freed after a grace period.\n\n## Affected\n\n- `Linux >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < a52e122c9e4d56ad9a03b32c915a199276d989c3`\n- `Linux >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 7dddc74af369478ba7f9bc136d0fc1dc4570cb66`\n- `Linux 2.6.12`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":3,"depthScoreParts":{"impact":2.8,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}