In the Linux kernel, the following vulnerability has been resolved:
rxrpc: Fix use of wrong skb when comparing queued RESP challenge serial
In rxrpc_post_response(), the code should be comparing the challenge serial number from the cached response before deciding to switch to a newer response, but looks at the newer packet private data instead, rendering the comparison always false.
Fix this by switching to look at the older packet.
Fix further[1] to substitute the new packet in place of the old one if newer and also to release whichever we don't use.
CVSS Details
- CVSS 3.1 Base Score: 7.5
- CVSS 3.1 Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H)
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Ubuntu | — | Upgrade linux-nvidia | May 25, 2026 | Apr 24, 2026 |
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