Improper Initialization in Linux kernel - CVE-2026-43184
Published: May 7, 2026
Vulnerability identifier: #VU130544
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2026-43184
CWE-ID: CWE-665
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: Linux Foundation
Affected software:
Linux kernel
Linux kernel
Detailed vulnerability description
The vulnerability allows a remote attacker to disclose sensitive information.
The vulnerability exists due to improper initialization in rnbd-srv response buffer handling when exchanging response messages between different protocol versions. A remote attacker can trigger communication using mismatched protocol versions to disclose sensitive information.
The issue arises because stray bytes in the response buffer may be picked up by the client side.
How to mitigate CVE-2026-43184
Install security update from vendor's repository.
Sources
- https://git.kernel.org/stable/c/30868a6a5238849d554295aff3ce61d242d7fad8
- https://git.kernel.org/stable/c/69d26698e4fd44935510553809007151b2fe4db5
- https://git.kernel.org/stable/c/7aac0a30dcf41cdb510526740d9a2ab1520c5d98
- https://git.kernel.org/stable/c/852475278ca5e96e0c0275950e1a84203e602b33
- https://git.kernel.org/stable/c/b646e54d23b9b592d612a2036aab14e0f6c14206
- https://git.kernel.org/stable/c/c94ede3c436dfbd9cedd9cb69f604f6fc901b6a2
- https://git.kernel.org/stable/c/e2cacec7d4291300a282feb3af8eba57b93b15aa
- https://git.kernel.org/stable/c/e4272754063d52c9ad0169865add8816ba696471