{"cve":"CVE-2026-68192","nvd":{"published":"2026-08-10T13:20:06.543","modified":"2026-10-19T21:17:57.427","status":"Received","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.","cvss_v4":null,"cvss_v3":{"version":"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},"cwes":["CWE-415"],"references":["https://git.kernel.org/stable/c/044fca8f45ba9ab6ca526163155234cf88287ff5","https://git.kernel.org/stable/c/0ca80328df23f851c86866720d4977783c919ee6","https://git.kernel.org/stable/c/382ee00b2d1e31869ae576a60d3fbe7a2153512f","https://git.kernel.org/stable/c/538c51e9d124cf656f2dd0c0394a8545efc7102d","https://git.kernel.org/stable/c/5a045c2f0fbf029873d2295178fa0785ade35af0"],"products":[],"source":"nvd","synced_at":"2026-10-21T03:56:58.798400159+00:00"},"epss":{"cve":"CVE-2026-68192","score":0.00408,"percentile":0.3481,"date":"2026-10-25"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}