CVE-2026-52908

Last refreshed2026-10-17

Status: UPDATED | Advisory ID: CVE-2026-52908

Key Details

CVE	CVE-2026-52908
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:

RDMA: During rereg_mr ensure that REREG_ACCESS is compatible

If IB_MR_REREG_ACCESS changes from RO to RW then the umem has to be

re-evaluated to ensure it is properly pinned as RW. Since the umem is

hidden inside each driver's mr struct add a ib_umem_check_rereg() function

that each driver has to call before processing IB_MR_REREG_ACCESS.

mlx4 has to retain its duplicate ib_access_writable check because it

implements IB_MR_REREG_ACCESS | IB_MR_REREG_TRANS by changing both items

in place sequentially while the MR is live, so it will continue to not

support this combination. (NVD)

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

Source	Reference
NVD	https://nvd.nist.gov/vuln/detail/CVE-2026-52908
CVE	https://www.cve.org/CVERecord?id=CVE-2026-52908

Source

Reference

NVD

CVE