CVE-2026-45988rxrpc: Fix re-decryption of RESPONSE packets
Updated under an hour ago ()
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No exploitation reported and no EPSS estimate yet.
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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.
- CVSS
- 9.8 CRITICAL (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- Weakness (CWE)
- Not given
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Linux
- NVD analysis
- Analyzed
- Record last updated
- Oct 16, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Linux Linux linux:linux (from the name) | from 17926a79320afa9b95df6b977b40cca6d8713cea before d61482be4aae1835b78875761206241835a7510e; 17926a79320afa9b95df6b977b40cca6d8713cea builds before 7b89868305052b94a91b708c462bc2281fa42a4a; 17926a79320afa9b95df6b977b40cca6d8713cea builds before 76cb9a2d252274adfae6e293a292434631a7d472; from 17926a79320afa9b95df6b977b40cca6d8713cea before f55b383070170e988e4dec28be2af1714d258521; 17926a79320afa9b95df6b977b40cca6d8713cea builds before 0422e7a4883f25101903f3e8105c0808aa5f4ce9 | CNA record |
linux linux_kernel linux:linux_kernel | from 2.6.22 before 6.6.140; from 6.7 before 6.12.86; from 6.13 before 6.18.27; from 6.19 before 7.0.4 | NVD |
References
- https://git.kernel.org/stable/c/d61482be4aae1835b78875761206241835a7510epatch
- https://git.kernel.org/stable/c/7b89868305052b94a91b708c462bc2281fa42a4apatch
- https://git.kernel.org/stable/c/76cb9a2d252274adfae6e293a292434631a7d472patch
- https://git.kernel.org/stable/c/f55b383070170e988e4dec28be2af1714d258521patch
- https://git.kernel.org/stable/c/0422e7a4883f25101903f3e8105c0808aa5f4ce9patch
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.