{"id":"CVE-2026-68192","revision":"2c0c9840a93045b68234b8303f35f123","records":[{"revision":"2c0c9840a93045b68234b8303f35f123","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-68192","aliases":[],"title":"wifi: brcmfmac: make release_scratchbuffers idempotent","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: brcmfmac: make release_scratchbuffers idempotent\n\nbrcmf_pcie_release_scratchbuffers() frees the shared.scratch and\nshared.ringupd DMA buffers with dma_free_coherent() but does not clear\nthe pointers afterwards, unlike the sibling release_ringbuffers() which\nNULLs commonrings/flowrings/idxbuf on release.\n\nBoth the bus_reset .reset callback (brcmf_pcie_reset) and\nbrcmf_pcie_remove() call release_scratchbuffers.  When reset teardown\nhas run before removal, remove's own teardown would call\ndma_free_coherent() a second time on the already-freed DMA allocation.\n\nNULL the pointers after free, matching release_ringbuffers(), so a later\nrelease observes that the allocation has already been released.  This\npatch makes repeated sequential release safe; the reset-work lifetime is\nhandled separately by the following patch.\n\nThis issue was found by an in-house static analysis tool.","state":0,"publishedAt":"2026-08-10T12:00:10.041+00:00","modifiedAt":"2026-10-19T20:58:56.511+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/broadcom/brcm80211/brcmfmac/pcie.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"4684997d9eea29380000e062755aa6d368d789a3\",\n                            \"lessThan\": \"81c58a206d1deee01f4c29236d4154c0872f2a38\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"4684997d9eea29380000e062755aa6d368d789a3\",\n                            \"lessThan\": \"382ee00b2d1e31869ae576a60d3fbe7a2153512f\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"4684997d9eea29380000e062755aa6d368d789a3\",\n                            \"lessThan\": \"739b686aecdb14a6065300ea53401f043e51fd22\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"4684997d9eea29380000e062755aa6d368d789a3\",\n                            \"lessThan\": \"b7d1d8cb1bdca56aecebacd2896615da0acc126a\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"4684997d9eea29380000e062755aa6d368d789a3\",\n                            \"lessThan\": \"5a045c2f0fbf029873d2295178fa0785ade35af0\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"4684997d9eea29380000e062755aa6d368d789a3\",\n                            \"lessThan\": \"044fca8f45ba9ab6ca526163155234cf88287ff5\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"4684997d9eea29380000e062755aa6d368d789a3\",\n                            \"lessThan\": \"0ca80328df23f851c86866720d4977783c919ee6\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"4684997d9eea29380000e062755aa6d368d789a3\",\n                            \"lessThan\": \"538c51e9d124cf656f2dd0c0394a8545efc7102d\",\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/broadcom/brcm80211/brcmfmac/pcie.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"5.2\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"0\",\n                            \"lessThan\": \"5.2\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"5.10.265\",\n                            \"lessThanOrEqual\": \"5.10.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"5.15.216\",\n                            \"lessThanOrEqual\": \"5.15.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.1.183\",\n                            \"lessThanOrEqual\": \"6.1.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.6.148\",\n                            \"lessThanOrEqual\": \"6.6.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.12.101\",\n                            \"lessThanOrEqual\": \"6.12.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.18.42\",\n                            \"lessThanOrEqual\": \"6.18.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.1.6\",\n                            \"lessThanOrEqual\": \"7.1.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.2\",\n                            \"lessThanOrEqual\": \"*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"original_commit_for_fix\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","score":8.8,"severity":"HIGH"}],"references":["https://git.kernel.org/stable/c/81c58a206d1deee01f4c29236d4154c0872f2a38","https://git.kernel.org/stable/c/382ee00b2d1e31869ae576a60d3fbe7a2153512f","https://git.kernel.org/stable/c/739b686aecdb14a6065300ea53401f043e51fd22","https://git.kernel.org/stable/c/b7d1d8cb1bdca56aecebacd2896615da0acc126a","https://git.kernel.org/stable/c/5a045c2f0fbf029873d2295178fa0785ade35af0","https://git.kernel.org/stable/c/044fca8f45ba9ab6ca526163155234cf88287ff5","https://git.kernel.org/stable/c/0ca80328df23f851c86866720d4977783c919ee6","https://git.kernel.org/stable/c/538c51e9d124cf656f2dd0c0394a8545efc7102d"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-68192","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-68192","identifiers":["CVE-2026-68192"]},"retained":false,"historicalAffected":[]}],"coverage":[]}