CVE-2026-31640
rxrpc: Fix use of wrong skb when comparing queued RESP challenge serial
CVSS Score
0.0
EPSS Score
0.0%
EPSS Percentile
0th
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.
| Vendor | linux |
| Product | linux |
| Ecosystems | |
| Industries | Technology |
| Published | Apr 24, 2026 |
Stay Ahead of the Next One
Get instant alerts for linux linux
Be the first to know when new unknown vulnerabilities affecting linux linux are published — delivered to Slack, Telegram or Discord.
Get Free Alerts →
Free · No credit card · 60 sec setup
Affected Versions
Linux / Linux
5800b1cf3fd8ccab752a101865be1e76dac33142 < 9132b1a7bf83b4a8042fffbc99d075b727a16742 5800b1cf3fd8ccab752a101865be1e76dac33142 < 20386e7f8d97475b8d815873e246423317ec4260 5800b1cf3fd8ccab752a101865be1e76dac33142 < b33f5741bb187db8ff32e8f5b96def77cc94dfca
Linux / Linux
6.16