Description
In the Linux kernel, the following vulnerability has been resolved: rxrpc: Fix re-decryption of RESPONSE packets If a RESPONSE packet gets a temporary failure during processing, it may end up in a partially decrypted state - and then get requeued for a retry. Fix this by just discarding the packet; we will send another CHALLENGE packet and thereby elicit a further response. Similarly, discard an incoming CHALLENGE packet if we get an error whilst generating a RESPONSE; the server will send another CHALLENGE.
Affected products
linux: linux kernel
References5
- git.kernel.org/stable/c/0422e7a4883f25101903f3e8105c0808aa5f4ce9 Patch
- git.kernel.org/stable/c/76cb9a2d252274adfae6e293a292434631a7d472 Patch
- git.kernel.org/stable/c/7b89868305052b94a91b708c462bc2281fa42a4a Patch
- git.kernel.org/stable/c/d61482be4aae1835b78875761206241835a7510e Patch
- git.kernel.org/stable/c/f55b383070170e988e4dec28be2af1714d258521 Patch
Metrics
- CVSS 3.1
-
9.8
CRITICAL
Score source: CNA
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - EPSS — exploit probability
- 0% percentile: 40 · as of 14 November 2026
- CWE
- CWE-682
Could this be exploited in your environment?
A patch closes the known hole. A penetration test shows what an attacker can still reach — with proof.