{"id":"CVE-2026-23281","revision":"c37458ce34b742e0bca19238fca4792d","records":[{"revision":"c37458ce34b742e0bca19238fca4792d","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-23281","aliases":[],"title":"wifi: libertas: fix use-after-free in lbs_free_adapter()","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: libertas: fix use-after-free in lbs_free_adapter()\n\nThe lbs_free_adapter() function uses timer_delete() (non-synchronous)\nfor both command_timer and tx_lockup_timer before the structure is\nfreed. This is incorrect because timer_delete() does not wait for\nany running timer callback to complete.\n\nIf a timer callback is executing when lbs_free_adapter() is called,\nthe callback will access freed memory since lbs_cfg_free() frees the\ncontaining structure immediately after lbs_free_adapter() returns.\n\nBoth timer callbacks (lbs_cmd_timeout_handler and lbs_tx_lockup_handler)\naccess priv->driver_lock, priv->cur_cmd, priv->dev, and other fields,\nwhich would all be use-after-free violations.\n\nUse timer_delete_sync() instead to ensure any running timer callback\nhas completed before returning.\n\nThis bug was introduced in commit 8f641d93c38a (\"libertas: detect TX\nlockups and reset hardware\") where del_timer() was used instead of\ndel_timer_sync() in the cleanup path. The command_timer has had the\nsame issue since the driver was first written.","state":0,"publishedAt":"2026-03-25T10:26:41.844+00:00","modifiedAt":"2026-10-15T01:13:37.602+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/marvell/libertas/main.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"954ee164f4f4598afc172c0ec3865d0352e55a0b\",\n                            \"lessThan\": \"b15e0fa7adb4de3a03aee9e6fc4d83e5cf0a65e4\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"954ee164f4f4598afc172c0ec3865d0352e55a0b\",\n                            \"lessThan\": \"09f3c30ab3b1371eaf9676a1b8add57bca763083\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"954ee164f4f4598afc172c0ec3865d0352e55a0b\",\n                            \"lessThan\": \"3f9dec4a6d95d7f1f5e9e9dfdfa173c053bba8dc\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"954ee164f4f4598afc172c0ec3865d0352e55a0b\",\n                            \"lessThan\": \"3c5c818c78b03a1725f3dcd566865c77b48dd3a6\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"954ee164f4f4598afc172c0ec3865d0352e55a0b\",\n                            \"lessThan\": \"d0155fe68f31b339961cf2d4f92937d57e9384e6\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"954ee164f4f4598afc172c0ec3865d0352e55a0b\",\n                            \"lessThan\": \"ed7d30f90b77f73a47498686ede83f622b7e4f0d\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"954ee164f4f4598afc172c0ec3865d0352e55a0b\",\n                            \"lessThan\": \"a9f55b14486426d907459bced5825a25063bd922\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"954ee164f4f4598afc172c0ec3865d0352e55a0b\",\n                            \"lessThan\": \"03cc8f90d0537fcd4985c3319b4fafbf2e3fb1f0\",\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/marvell/libertas/main.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"2.6.24\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"0\",\n                            \"lessThan\": \"2.6.24\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"5.10.253\",\n                            \"lessThanOrEqual\": \"5.10.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"5.15.203\",\n                            \"lessThanOrEqual\": \"5.15.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.1.167\",\n                            \"lessThanOrEqual\": \"6.1.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.6.130\",\n                            \"lessThanOrEqual\": \"6.6.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.12.78\",\n                            \"lessThanOrEqual\": \"6.12.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.18.17\",\n                            \"lessThanOrEqual\": \"6.18.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.19.7\",\n                            \"lessThanOrEqual\": \"6.19.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.0\",\n                            \"lessThanOrEqual\": \"*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"original_commit_for_fix\"\n                        }\n                    ]\n                }"}],"metrics":[],"references":["https://git.kernel.org/stable/c/b15e0fa7adb4de3a03aee9e6fc4d83e5cf0a65e4","https://git.kernel.org/stable/c/09f3c30ab3b1371eaf9676a1b8add57bca763083","https://git.kernel.org/stable/c/3f9dec4a6d95d7f1f5e9e9dfdfa173c053bba8dc","https://git.kernel.org/stable/c/3c5c818c78b03a1725f3dcd566865c77b48dd3a6","https://git.kernel.org/stable/c/d0155fe68f31b339961cf2d4f92937d57e9384e6","https://git.kernel.org/stable/c/ed7d30f90b77f73a47498686ede83f622b7e4f0d","https://git.kernel.org/stable/c/a9f55b14486426d907459bced5825a25063bd922","https://git.kernel.org/stable/c/03cc8f90d0537fcd4985c3319b4fafbf2e3fb1f0"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-23281","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-23281","identifiers":["CVE-2026-23281"]},"retained":false,"historicalAffected":[]}],"coverage":[]}