{"affected":[{"defaultStatus":"unaffected","product":"Linux","source":"CNA: Linux","vendor":"Linux","versions":[{"lessThan":"ccc822e9e4f09a6c2ca73ad5334570441947f94f","status":"affected","version":"1100242709d5644856131a9dd25d32672ebe7357","versionType":"git"},{"lessThan":"79ff0547676acdeceda445c3fce4071b0a887b70","status":"affected","version":"a2accc07bdcfb0c7ab2cacdca6a1fe8267816efa","versionType":"git"},{"lessThan":"f72c312af6c7897ab0f8a2b5a63f917a207a4143","status":"affected","version":"72dbae1f2f2159395089405c6c54632f2613f1be","versionType":"git"},{"lessThan":"21d48408479a17eb65568a765930adea37e4d804","status":"affected","version":"c707d2c5541d2bb94131968ad5dfeb06427a1dba","versionType":"git"},{"lessThan":"b5ded444621b6180df9f3d4e07045fc1fc1e8cd9","status":"affected","version":"1a8a63a5305e95519de6f941922dfcd8179f82e5","versionType":"git"},{"lessThan":"ae995b8002d3af134560a706c0e111a89e26317c","status":"affected","version":"1a8a63a5305e95519de6f941922dfcd8179f82e5","versionType":"git"},{"lessThan":"dcf15eaf5641812f1cfc5e96537380132a7da89d","status":"affected","version":"1a8a63a5305e95519de6f941922dfcd8179f82e5","versionType":"git"},{"lessThan":"5.15.216","status":"affected","version":"5.15.194","versionType":"semver"},{"lessThan":"6.1.183","status":"affected","version":"6.1.153","versionType":"semver"},{"lessThan":"6.6.148","status":"affected","version":"6.6.107","versionType":"semver"},{"lessThan":"6.12.101","status":"affected","version":"6.12.48","versionType":"semver"}]},{"defaultStatus":"affected","product":"Linux","source":"CNA: Linux","vendor":"Linux","versions":[{"status":"affected","version":"6.13"},{"lessThan":"6.13","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"5.15.*","status":"unaffected","version":"5.15.216","versionType":"semver"},{"lessThanOrEqual":"6.1.*","status":"unaffected","version":"6.1.183","versionType":"semver"},{"lessThanOrEqual":"6.6.*","status":"unaffected","version":"6.6.148","versionType":"semver"},{"lessThanOrEqual":"6.12.*","status":"unaffected","version":"6.12.101","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.42","versionType":"semver"},{"lessThanOrEqual":"7.1.*","status":"unaffected","version":"7.1.6","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.2","versionType":"original_commit_for_fix"}]}],"cveId":"CVE-2026-68301","cwes":[],"description":"In the Linux kernel, the following vulnerability has been resolved:\n\nnet: hsr: fix memory leak on slave unregistration by removing synced VLANs\n\nWhen an HSR master device is brought UP, it auto-adds VLAN 0 via\nvlan_vid0_add(), which propagates VID 0 to its slave devices (slave A and B).\n\nIf a slave device is later unregistered while HSR is active (e.g., during\nnetns cleanup or interface destruction), hsr_del_port() is called to\ndetach the slave port from the HSR master. However, hsr_del_port() currently\ndoes not delete the VLAN IDs that were synced to the slave device by HSR.\n\nAs a result, the slave device retains a refcount on VID 0 (and any other\nsynced VLANs). When the slave device is destroyed, its vlan_info /\nvlan_vid_info structure remains allocated, leading to a memory leak.\n\nFix this by calling vlan_vids_del_by_dev(port->dev, master->dev) in\nhsr_del_port() before unlinking slave A or slave B ports, matching the\npropagation logic in hsr_ndo_vlan_rx_add_vid() / hsr_ndo_vlan_rx_kill_vid()\nand the cleanup behavior in bonding and team drivers.","epss":{"date":"2026-11-06","percentile":0.06726,"score":0.00173},"exploits":[],"kev":null,"metrics":[],"modifiedAt":1793985568183,"publishedAt":1786363355155,"references":[{"source":"CNA: Linux","tags":[],"url":"https://git.kernel.org/stable/c/ccc822e9e4f09a6c2ca73ad5334570441947f94f"},{"source":"CNA: Linux","tags":[],"url":"https://git.kernel.org/stable/c/79ff0547676acdeceda445c3fce4071b0a887b70"},{"source":"CNA: Linux","tags":[],"url":"https://git.kernel.org/stable/c/f72c312af6c7897ab0f8a2b5a63f917a207a4143"},{"source":"CNA: Linux","tags":[],"url":"https://git.kernel.org/stable/c/21d48408479a17eb65568a765930adea37e4d804"},{"source":"CNA: Linux","tags":[],"url":"https://git.kernel.org/stable/c/b5ded444621b6180df9f3d4e07045fc1fc1e8cd9"},{"source":"CNA: Linux","tags":[],"url":"https://git.kernel.org/stable/c/ae995b8002d3af134560a706c0e111a89e26317c"},{"source":"CNA: Linux","tags":[],"url":"https://git.kernel.org/stable/c/dcf15eaf5641812f1cfc5e96537380132a7da89d"},{"source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"url":"https://git.kernel.org/stable/c/21d48408479a17eb65568a765930adea37e4d804"},{"source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"url":"https://git.kernel.org/stable/c/79ff0547676acdeceda445c3fce4071b0a887b70"},{"source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"url":"https://git.kernel.org/stable/c/ae995b8002d3af134560a706c0e111a89e26317c"},{"source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"url":"https://git.kernel.org/stable/c/b5ded444621b6180df9f3d4e07045fc1fc1e8cd9"},{"source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"url":"https://git.kernel.org/stable/c/ccc822e9e4f09a6c2ca73ad5334570441947f94f"},{"source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"url":"https://git.kernel.org/stable/c/dcf15eaf5641812f1cfc5e96537380132a7da89d"},{"source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"url":"https://git.kernel.org/stable/c/f72c312af6c7897ab0f8a2b5a63f917a207a4143"}],"remediation":[],"revision":"639c41954866fbb61437ab8b81b66b1e8c9f8bfd93bd538648007b14b9448e66","sources":[{"modifiedAt":1793984112377,"name":"CNA: Linux","retrievedAt":1793985963079,"url":"https://www.cve.org/CVERecord?id=CVE-2026-68301"},{"modifiedAt":1793985568183,"name":"NVD","retrievedAt":1793989631744,"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-68301"},{"modifiedAt":null,"name":"FIRST EPSS","retrievedAt":1793986000856,"url":"https://api.first.org/data/v1/epss?cve=CVE-2026-68301"}],"ssvc":{"assessedAt":1793983606689,"automatable":"no","exploitation":"none","source":"ADP: CISA-ADP","technicalImpact":"partial"},"status":"published","title":"net: hsr: fix memory leak on slave unregistration by removing synced VLANs","updatedAt":1793989631744}