Improper Initialization in Linux kernel - CVE-2026-45988
Published: May 28, 2026
Vulnerability identifier: #VU132497
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2026-45988
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 cause a denial of service.
The vulnerability exists due to improper state management in RxRPC packet processing when handling RESPONSE or CHALLENGE packets after a temporary processing failure. A remote attacker can send a sequence of crafted packets that trigger packet reprocessing to cause a denial of service.
The issue can occur when a packet is left in a partially decrypted state and then requeued for retry.
How to mitigate CVE-2026-45988
Install security update from vendor's repository.
Sources
- https://git.kernel.org/stable/c/0422e7a4883f25101903f3e8105c0808aa5f4ce9
- https://git.kernel.org/stable/c/76cb9a2d252274adfae6e293a292434631a7d472
- https://git.kernel.org/stable/c/7b89868305052b94a91b708c462bc2281fa42a4a
- https://git.kernel.org/stable/c/d61482be4aae1835b78875761206241835a7510e
- https://git.kernel.org/stable/c/f55b383070170e988e4dec28be2af1714d258521