Improper locking in Linux kernel - CVE-2026-43469
Published: May 8, 2026
Vulnerability identifier: #VU130719
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2026-43469
CWE-ID: CWE-667
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vendor: Linux Foundation
Affected software:
Linux kernel
Linux kernel
Detailed vulnerability description
The vulnerability allows a local user to cause a denial of service.
The vulnerability exists due to improper state management in the xprtrdma receive handling logic when exiting early from receive work request posting. A local user can trigger memory pressure conditions to cause a denial of service.
The issue can cause the system to hang because the re_receiving counter is not decremented on certain early exit paths, preventing completion during transport drain.
How to mitigate CVE-2026-43469
Install security update from vendor's repository.
Sources
- https://git.kernel.org/stable/c/49f53ee4e25297d886f14e31f355ad1c2735ddfb
- https://git.kernel.org/stable/c/74c39a47856bddcde7874f2196a00143b5cd0af9
- https://git.kernel.org/stable/c/7b6275c80a0c81c5f8943272292dfe67730ce849
- https://git.kernel.org/stable/c/7ea69259a60a364f56cf4aa9e2eafb588d1c762b
- https://git.kernel.org/stable/c/8127b5fec04757c2a41ed65bca0b3266968efd3b
- https://git.kernel.org/stable/c/8cb6b5d8296b1f99a8d36849901ebabfe3f749db
- https://git.kernel.org/stable/c/dc3ebd7e2d73dbd4d317785735ffa6c4a6384ddf