Answer in brief
CVE-2026-68192 records a High severity (CVSS 8.8) vulnerability in wifi: brcmfmac: make release_scratchbuffers idempotent. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
CVSS is 8.8. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Linux/Linux (generic), Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=4684997d9eea29380000e062755aa6d368d789a3 <b7d1d8cb1bdca56aecebacd2896615da0acc126a || >=4684997d9eea29380000e062755aa6d368d789a3 <5a045c2f0fbf029873d2295178fa0785ade35af0 || >=4684997d9eea29380000e062755aa6d368d789a3 <044fca8f45ba9ab6ca526163155234cf88287ff5 || >=4684997d9eea29380000e062755aa6d368d789a3 <0ca80328df23f851c86866720d4977783c919ee6 || >=4684997d9eea29380000e062755aa6d368d789a3 <538c51e9d124cf656f2dd0c0394a8545efc7102d | b7d1d8cb1bdca56aecebacd2896615da0acc126a, 5a045c2f0fbf029873d2295178fa0785ade35af0, 044fca8f45ba9ab6ca526163155234cf88287ff5, 0ca80328df23f851c86866720d4977783c919ee6, 538c51e9d124cf656f2dd0c0394a8545efc7102d |
| Linux/Linuxgeneric | 5.2 | Not reported |
| Linux/Linuxgeneric | >=4684997d9eea29380000e062755aa6d368d789a3 <81c58a206d1deee01f4c29236d4154c0872f2a38 || >=4684997d9eea29380000e062755aa6d368d789a3 <382ee00b2d1e31869ae576a60d3fbe7a2153512f || >=4684997d9eea29380000e062755aa6d368d789a3 <739b686aecdb14a6065300ea53401f043e51fd22 || >=4684997d9eea29380000e062755aa6d368d789a3 <b7d1d8cb1bdca56aecebacd2896615da0acc126a || >=4684997d9eea29380000e062755aa6d368d789a3 <5a045c2f0fbf029873d2295178fa0785ade35af0 || >=4684997d9eea29380000e062755aa6d368d789a3 <044fca8f45ba9ab6ca526163155234cf88287ff5 || >=4684997d9eea29380000e062755aa6d368d789a3 <0ca80328df23f851c86866720d4977783c919ee6 || >=4684997d9eea29380000e062755aa6d368d789a3 <538c51e9d124cf656f2dd0c0394a8545efc7102d | 81c58a206d1deee01f4c29236d4154c0872f2a38, 382ee00b2d1e31869ae576a60d3fbe7a2153512f, 739b686aecdb14a6065300ea53401f043e51fd22, b7d1d8cb1bdca56aecebacd2896615da0acc126a, 5a045c2f0fbf029873d2295178fa0785ade35af0, 044fca8f45ba9ab6ca526163155234cf88287ff5, 0ca80328df23f851c86866720d4977783c919ee6, 538c51e9d124cf656f2dd0c0394a8545efc7102d |
Published upstream
Aug 10, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 19, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 10, 2026
In the Linux kernel, the following vulnerability has been resolved: wifi: brcmfmac: make release_scratchbuffers idempotent brcmf_pcie_release_scratchbuffers() frees the shared.scratch and shared.ringupd DMA buffers with dma_free_coherent() but does not clear the pointers afterwards, unlike the sibling release_ringbuffers() which NULLs commonrings/flowrings/idxbuf on release. Both the bus_reset .reset callback (brcmf_pcie_reset) and brcmf_pcie_remove() call release_scratchbuffers. When reset teardown has run before removal, remove's own teardown would call dma_free_coherent() a second time on the already-freed DMA allocation. NULL the pointers after free, matching release_ringbuffers(), so a later release observes that the allocation has already been released. This patch makes repeated sequential release safe; the reset-work lifetime is handled separately by the following patch. This issue was found by an in-house static analysis tool.
Quoted source text, attributed separately from HOL analysis.