CVE-2026-43494

high Red Hat
CVSS v3 Base Score
7.0
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
EPSS Score
0.0%
Exploitation probability in 30 days
Top 95% most likely to be exploited
Attack Characteristics
Attack Vector
Local
Attack Complexity
High
Privileges Required
Low
User Interaction
None
Confidentiality
High
Integrity
High
Availability
High
Published: May 21, 2026 (50 days ago)
Last Modified: May 21, 2026
Vendor: Red Hat
Source: REDHAT

Description

A flaw was found in the Linux kernel, specifically within the `net/rds` module. When a zerocopy page pin operation fails, a counter used for memory management (`op_nents`) is not correctly reset. This can result in a double-free vulnerability, where the same memory is released twice. A local attacker could potentially exploit this to cause the system to crash (denial of service) or, in some cases, execute unauthorized code.

CWE

CWE-1341

Affected Products

Red Hat Enterprise Linux 10Red Hat Enterprise Linux 6Red Hat Enterprise Linux 7Red Hat Enterprise Linux 8Red Hat Enterprise Linux 9

References

🔗 bugzilla.redhat.com 🔗 www.cve.org 🔗 nvd.nist.gov 🔗 lore.kernel.org