CVE-2026-74404

Last refreshed2026-10-17

Status: UPDATED | Advisory ID: CVE-2026-74404

Key Details

CVE	CVE-2026-74404
CVSS Score / Version	7.8 (High) / CVSS v3.1
Updated	2026-10-16
CVSS Vector	`CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H`
CVSS Prose	attack vector is local; attack complexity is low; privileges required is low; 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:

crypto: ccp - Fix snp_filter_reserved_mem_regions() off-by-one

Sashiko notes:

> regarding the bounds check in snp_filter_reserved_mem_regions()

> called via walk_iomem_res_desc(): does the check

> if ((range_list->num_elements * 16 + 8) > PAGE_SIZE)

> allow an off-by-one heap buffer overflow?

> If range_list->num_elements is 255, 255 * 16 + 8 = 4088, which is <= 4096.

> Writing range->base (8 bytes) fills 4088-4095, but writing range->page_count

> (4 bytes) would write to 4096-4099, overflowing the kzalloc-allocated

> PAGE_SIZE buffer.

Fix this by accounting for the entry about to be written to, in addition to

the entries that are already allocated. (NVD)

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

Source	Reference
NVD	https://nvd.nist.gov/vuln/detail/CVE-2026-74404
CVE	https://www.cve.org/CVERecord?id=CVE-2026-74404

Source

Reference

NVD

CVE