CVE-2026-23419
kernel: net/rds: Fix circular locking dependency in rds_tcp_tune
Severity
ModerateRed Hat Product Security
CVSS 3.1
Review impact separately from score.
Published · April 3, 2026
Updated · June 30, 2026
Description
A flaw was found in the Linux kernel's net/rds module. This vulnerability involves a circular locking dependency within the rds_tcp_tune() function. The issue arises when the sk_net_refcnt_upgrade() function performs memory allocation while a socket lock is held, creating a deadlock with the fs_reclaim lock. This can lead to system unresponsiveness or crashes, resulting in a Denial of Service (DoS) condition.
CVSS score applicability
The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.
Mitigation
No mitigation is specified in collected source.
CVSS / CWE
CVSS 3.1 · 5.5CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CWE-833 · Deadlock