{"id":"CVE-2026-53097","revision":"bffde0254f1a4ed4ac949d61c48c7489","records":[{"revision":"bffde0254f1a4ed4ac949d61c48c7489","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-53097","aliases":[],"title":"wifi: mt76: mt7996: fix use-after-free bugs in mt7996_mac_dump_work()","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: mt76: mt7996: fix use-after-free bugs in mt7996_mac_dump_work()\n\nWhen the mt7996 pci chip is detaching, the mt7996_crash_data is\nreleased in mt7996_coredump_unregister(). However, the work item\ndump_work may still be running or pending, leading to UAF bugs\nwhen the already freed crash_data is dereferenced again in\nmt7996_mac_dump_work().\n\nThe race condition can occur as follows:\n\nCPU 0 (removal path)               | CPU 1 (workqueue)\nmt7996_pci_remove()                | mt7996_sys_recovery_set()\n mt7996_unregister_device()        |  mt7996_reset()\n  mt7996_coredump_unregister()     |   queue_work()\n   vfree(dev->coredump.crash_data) | mt7996_mac_dump_work()\n                                   |  crash_data-> // UAF\n\nFix this by ensuring dump_work is properly canceled before\nthe crash_data is deallocated. Add cancel_work_sync() in\nmt7996_unregister_device() to synchronize with any pending\nor executing dump work.","state":0,"publishedAt":"2026-06-24T16:30:35.223+00:00","modifiedAt":"2026-10-21T12:41:57.624+00:00","affected":[{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"product\": \"Linux\",\n                    \"vendor\": \"Linux\",\n                    \"defaultStatus\": \"unaffected\",\n                    \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n                    \"programFiles\": [\n                        \"drivers/net/wireless/mediatek/mt76/mt7996/init.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"878161d5d4a469a6ef7f3fb4fe9f676bc508ee99\",\n                            \"lessThan\": \"533b1a9fa0128c75e40dd2d2c38a32b4e660741f\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"878161d5d4a469a6ef7f3fb4fe9f676bc508ee99\",\n                            \"lessThan\": \"180182a3f23ff79430a32ca2c4c1885368ceab48\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"878161d5d4a469a6ef7f3fb4fe9f676bc508ee99\",\n                            \"lessThan\": \"aa4a31cd89f4fde5043ac613fe0e27014a60a60b\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"878161d5d4a469a6ef7f3fb4fe9f676bc508ee99\",\n                            \"lessThan\": \"188e10f9ea3109d23c6b7643aa6ec2f5cb0faa6d\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"878161d5d4a469a6ef7f3fb4fe9f676bc508ee99\",\n                            \"lessThan\": \"c8f62f73bbced3a79894655bdb0b625462d956fc\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        }\n                    ]\n                }"},{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"product\": \"Linux\",\n                    \"vendor\": \"Linux\",\n                    \"defaultStatus\": \"affected\",\n                    \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n                    \"programFiles\": [\n                        \"drivers/net/wireless/mediatek/mt76/mt7996/init.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"6.4\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"0\",\n                            \"lessThan\": \"6.4\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.6.160\",\n                            \"lessThanOrEqual\": \"6.6.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.12.91\",\n                            \"lessThanOrEqual\": \"6.12.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.18.33\",\n                            \"lessThanOrEqual\": \"6.18.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.0.10\",\n                            \"lessThanOrEqual\": \"7.0.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.1\",\n                            \"lessThanOrEqual\": \"*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"original_commit_for_fix\"\n                        }\n                    ]\n                }"}],"metrics":[],"references":["https://git.kernel.org/stable/c/533b1a9fa0128c75e40dd2d2c38a32b4e660741f","https://git.kernel.org/stable/c/180182a3f23ff79430a32ca2c4c1885368ceab48","https://git.kernel.org/stable/c/aa4a31cd89f4fde5043ac613fe0e27014a60a60b","https://git.kernel.org/stable/c/188e10f9ea3109d23c6b7643aa6ec2f5cb0faa6d","https://git.kernel.org/stable/c/c8f62f73bbced3a79894655bdb0b625462d956fc"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-53097","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-53097","identifiers":["CVE-2026-53097"]},"retained":false,"historicalAffected":[]}],"coverage":[]}