CVE-2026-68192

Last refreshed2026-10-17

Status: UPDATED | Advisory ID: CVE-2026-68192

Key Details

CVE	CVE-2026-68192
CVSS Score / Version	8.8 (High) / CVSS v3.1
Updated	2026-10-16
CVSS Vector	`CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H`
CVSS Prose	attack vector is adjacent; attack complexity is low; privileges required is none; user interaction is none; scope is unchanged; confidentiality impact is high; integrity impact is high; availability impact is high.
Affected products	Linux Kernel

Vendor	Product	Affected Versions	Patch Status
Linux	Linux Kernel

Vendor

Product

Affected Versions

Patch Status

Linux

Linux Kernel

Subsystems	OT Supporting Infrastructure
Sectors	All Sectors

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. (NVD)

Monitor Linux's web page for any future patch releases.

Source	Reference
NVD	https://nvd.nist.gov/vuln/detail/CVE-2026-68192
CVE	https://www.cve.org/CVERecord?id=CVE-2026-68192

Source

Reference

NVD

CVE