CVE-2026-68192
CVE.org · Published
- Record status
- Published
- Identifier year (not publication year)
- 2026
- Source publication
- Source updated
- Imported by cveboard
- Source snapshot
- cve_2026-10-24_midnight_baseline ·
CNA source text (English)
wifi: brcmfmac: make release_scratchbuffers idempotent
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.
Scoped product and version facts
Fix information unknown; no fixed version is derived here. Missing information does not prove that no fix exists.
Exploitation unknown; this catalogue does not assess exploitation.
Linux
- Vendor
- Linux
- Product
- Linux
- Platforms
- Unknown
- Default status
unaffected
| Version (version) | Status (status) | Version scheme (versionType) | Exclusive end (lessThan) | Inclusive end (lessThanOrEqual) | Status changes (at → status) |
|---|---|---|---|---|---|
| 4684997d9eea29380000e062755aa6d368d789a3 | affected | git | 81c58a206d1deee01f4c29236d4154c0872f2a38 | Unavailable | None listed |
| 4684997d9eea29380000e062755aa6d368d789a3 | affected | git | 382ee00b2d1e31869ae576a60d3fbe7a2153512f | Unavailable | None listed |
| 4684997d9eea29380000e062755aa6d368d789a3 | affected | git | 739b686aecdb14a6065300ea53401f043e51fd22 | Unavailable | None listed |
| 4684997d9eea29380000e062755aa6d368d789a3 | affected | git | b7d1d8cb1bdca56aecebacd2896615da0acc126a | Unavailable | None listed |
| 4684997d9eea29380000e062755aa6d368d789a3 | affected | git | 5a045c2f0fbf029873d2295178fa0785ade35af0 | Unavailable | None listed |
| 4684997d9eea29380000e062755aa6d368d789a3 | affected | git | 044fca8f45ba9ab6ca526163155234cf88287ff5 | Unavailable | None listed |
| 4684997d9eea29380000e062755aa6d368d789a3 | affected | git | 0ca80328df23f851c86866720d4977783c919ee6 | Unavailable | None listed |
| 4684997d9eea29380000e062755aa6d368d789a3 | affected | git | 538c51e9d124cf656f2dd0c0394a8545efc7102d | Unavailable | None listed |
Linux
- Vendor
- Linux
- Product
- Linux
- Platforms
- Unknown
- Default status
affected
| Version (version) | Status (status) | Version scheme (versionType) | Exclusive end (lessThan) | Inclusive end (lessThanOrEqual) | Status changes (at → status) |
|---|---|---|---|---|---|
| 5.2 | affected | Unavailable | Unavailable | Unavailable | None listed |
| 0 | unaffected | semver | 5.2 | Unavailable | None listed |
| 5.10.265 | unaffected | semver | Unavailable | 5.10.* | None listed |
| 5.15.216 | unaffected | semver | Unavailable | 5.15.* | None listed |
| 6.1.183 | unaffected | semver | Unavailable | 6.1.* | None listed |
| 6.6.148 | unaffected | semver | Unavailable | 6.6.* | None listed |
| 6.12.101 | unaffected | semver | Unavailable | 6.12.* | None listed |
| 6.18.42 | unaffected | semver | Unavailable | 6.18.* | None listed |
| 7.1.6 | unaffected | semver | Unavailable | 7.1.* | None listed |
| 7.2 | unaffected | original_commit_for_fix | Unavailable | * | None listed |