PT-2026-43920 · Linux · Linux Kernel

Published 2026-05-27 · Updated 2026-06-04 · CVE-2026-46053

Positive Technologies (AI Summary)

CVSS v3.1

7.8

High

Base vector

AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Name of the Vulnerable Software and Affected Versions Linux kernel (affected versions not specified)

Description An issue exists in the Reliable Datagram Sockets (RDS) implementation of the Linux kernel. In the rds rdma map() function, memory region (MR) ownership of scatter-gather lists and pages is transferred to the transport after get mr() succeeds. If a failure occurs when copying the generated cookie back to user space via put user(), the error path incorrectly attempts to free these resources again before dropping the MR reference, leading to a duplicate cleanup process.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Related Identifiers

CVE-2026-46053

ECHO-5FF0-EA8B-4367

OPENSUSE-SU-2026:10954-1

Affected Products

Linux Kernel

References · 292

• https://osv.dev/vulnerability/openSUSE-SU-2026:10954-1 · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2026-46053 · Vendor Advisory
• https://ubuntu.com/security/CVE-2026-46053 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2026-46053 · Security Note
• https://osv.dev/vulnerability/BELL-CVE-2026-46053 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2026-46053 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2026-46053 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-46053 · Security Note
• https://suse.com/security/cve/CVE-2026-46065 · Note
• https://suse.com/security/cve/CVE-2026-46216 · Note
• https://suse.com/security/cve/CVE-2026-46013 · Note
• https://suse.com/security/cve/CVE-2026-46009 · Note
• https://suse.com/security/cve/CVE-2026-45837 · Note
• https://suse.com/security/cve/CVE-2026-46164 · Note
• https://suse.com/security/cve/CVE-2026-46077 · Note