CVE-2026-74495

Last refreshed2026-10-17

Status: UPDATED | Advisory ID: CVE-2026-74495

Key Details

CVE	CVE-2026-74495
CVSS Score / Version	9.8 (Critical) / CVSS v3.1
Updated	2026-10-16
CVSS Vector	`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H`
CVSS Prose	attack vector is network; 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:

igbvf: Fix leak in TX DMA error cleanup

If an error is encountered while mapping TX buffers, the driver should

unmap any buffers already mapped for that skb.

Because count is incremented before each frag mapping, it will always

match the correct number of unmappings needed when dma_error is reached.

Decrementing count before the while loop in dma_error causes an

off-by-one error. If any mapping was successful before an unsuccessful

mapping, exactly one DMA mapping (the head) would leak.

This bug was introduced by a 2010 fix for an endless loop in dma_error.

All other affected drivers have already been fixed. (NVD)

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

Source	Reference
NVD	https://nvd.nist.gov/vuln/detail/CVE-2026-74495
CVE	https://www.cve.org/CVERecord?id=CVE-2026-74495

Source

Reference

NVD

CVE