{"id":"CVE-2026-31532","revision":"f498882d35694550b3eefb53d42b8733","records":[{"revision":"f498882d35694550b3eefb53d42b8733","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-31532","aliases":[],"title":"can: raw: fix ro->uniq use-after-free in raw_rcv()","description":"In the Linux kernel, the following vulnerability has been resolved:\n\ncan: raw: fix ro->uniq use-after-free in raw_rcv()\n\nraw_release() unregisters raw CAN receive filters via can_rx_unregister(),\nbut receiver deletion is deferred with call_rcu(). This leaves a window\nwhere raw_rcv() may still be running in an RCU read-side critical section\nafter raw_release() frees ro->uniq, leading to a use-after-free of the\npercpu uniq storage.\n\nMove free_percpu(ro->uniq) out of raw_release() and into a raw-specific\nsocket destructor. can_rx_unregister() takes an extra reference to the\nsocket and only drops it from the RCU callback, so freeing uniq from\nsk_destruct ensures the percpu area is not released until the relevant\ncallbacks have drained.\n\n[mkl: applied manually]","state":0,"publishedAt":"2026-04-23T11:12:44.829+00:00","modifiedAt":"2026-10-19T18:45:55.225+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                        \"net/can/raw.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"514ac99c64b22d83b52dfee3b8becaa69a92bc4a\",\n                            \"lessThan\": \"1de30576a6dfeaaa27ef91fa272e6b9240b6fbd3\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"514ac99c64b22d83b52dfee3b8becaa69a92bc4a\",\n                            \"lessThan\": \"64c8553decf5a5f2417bd54761ea0a832c56c4ca\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"514ac99c64b22d83b52dfee3b8becaa69a92bc4a\",\n                            \"lessThan\": \"3f43f12fde34737fba091b7e3ab391e14ddbb0be\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"514ac99c64b22d83b52dfee3b8becaa69a92bc4a\",\n                            \"lessThan\": \"5e9cfffad898bbeaafd0ea608a6d267362f050fc\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"514ac99c64b22d83b52dfee3b8becaa69a92bc4a\",\n                            \"lessThan\": \"572f0bf536ebc14f6e7da3d21a85cf076de8358e\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"514ac99c64b22d83b52dfee3b8becaa69a92bc4a\",\n                            \"lessThan\": \"1a0f2de81f7fbdc538fc72d7d74609b79bc83cc0\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"514ac99c64b22d83b52dfee3b8becaa69a92bc4a\",\n                            \"lessThan\": \"7201a531b9a5ed892bfda5ded9194ef622de8ffa\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"514ac99c64b22d83b52dfee3b8becaa69a92bc4a\",\n                            \"lessThan\": \"34c1741254ff972e8375faf176678a248826fe3a\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"514ac99c64b22d83b52dfee3b8becaa69a92bc4a\",\n                            \"lessThan\": \"a535a9217ca3f2fccedaafb2fddb4c48f27d36dc\",\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                        \"net/can/raw.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"4.1\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"0\",\n                            \"lessThan\": \"4.1\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"5.10.258\",\n                            \"lessThanOrEqual\": \"5.10.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"5.15.209\",\n                            \"lessThanOrEqual\": \"5.15.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.1.175\",\n                            \"lessThanOrEqual\": \"6.1.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.6.136\",\n                            \"lessThanOrEqual\": \"6.6.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.12.83\",\n                            \"lessThanOrEqual\": \"6.12.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.18.24\",\n                            \"lessThanOrEqual\": \"6.18.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.19.14\",\n                            \"lessThanOrEqual\": \"6.19.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.0.1\",\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":[{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","score":7.8,"severity":"HIGH"}],"references":["https://git.kernel.org/stable/c/1de30576a6dfeaaa27ef91fa272e6b9240b6fbd3","https://git.kernel.org/stable/c/64c8553decf5a5f2417bd54761ea0a832c56c4ca","https://git.kernel.org/stable/c/3f43f12fde34737fba091b7e3ab391e14ddbb0be","https://git.kernel.org/stable/c/5e9cfffad898bbeaafd0ea608a6d267362f050fc","https://git.kernel.org/stable/c/572f0bf536ebc14f6e7da3d21a85cf076de8358e","https://git.kernel.org/stable/c/1a0f2de81f7fbdc538fc72d7d74609b79bc83cc0","https://git.kernel.org/stable/c/7201a531b9a5ed892bfda5ded9194ef622de8ffa","https://git.kernel.org/stable/c/34c1741254ff972e8375faf176678a248826fe3a","https://git.kernel.org/stable/c/a535a9217ca3f2fccedaafb2fddb4c48f27d36dc"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-31532","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-31532","identifiers":["CVE-2026-31532"]},"retained":false,"historicalAffected":[]}],"coverage":[]}