CVE-2026-31640: Linux

Описание

Оригинално описание

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.

Засегнати продукти

• Linux Linux: 5800b1cf3fd8ccab752a101865be1e76dac33142 преди 9132b1a7bf83b4a8042fffbc99d075b727a16742; 5800b1cf3fd8ccab752a101865be1e76dac33142 преди 20386e7f8d97475b8d815873e246423317ec4260; 5800b1cf3fd8ccab752a101865be1e76dac33142 преди b33f5741bb187db8ff32e8f5b96def77cc94dfca
• Linux Linux: 6.16; преди 6.16; 6.18.23 до 6.18.*; 6.19.13 до 6.19.*; от 7.0 нататък

История

Други уязвимости в Linux Linux

• 8.1CVE-2026-99270
• 7.8CVE-2026-99269
• CVE-2026-99268
• CVE-2026-99266
• CVE-2026-99267

Първоизточници

• https://www.cve.org/CVERecord?id=CVE-2026-31640
• https://nvd.nist.gov/vuln/detail/CVE-2026-31640
• https://git.kernel.org/stable/c/9132b1a7bf83b4a8042fffbc99d075b727a16742
• https://git.kernel.org/stable/c/20386e7f8d97475b8d815873e246423317ec4260
• https://git.kernel.org/stable/c/b33f5741bb187db8ff32e8f5b96def77cc94dfca