What’s Vulnerable › Vulnerabilities

CVE-2026-46000: rxrpc: Fix conn-level packet handling to unshare RESPONSE packets

• Severity: medium (CVSS 5.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-05-27 · updated 2026-10-30

Description

In the Linux kernel, the following vulnerability has been resolved: rxrpc: Fix conn-level packet handling to unshare RESPONSE packets The security operations that verify the RESPONSE packets decrypt bits of it in place - however, the sk_buff may be shared with a packet sniffer, which would lead to the sniffer seeing an apparently corrupt packet (actually decrypted). Fix this by handing a copy of the packet off to the specific security handler if the packet was cloned.

Affected products

• Linux kernel: from 2.6.22 before 6.6.140; from 6.7 before 6.12.88; from 6.13 before 6.18.27; from 6.19 before 7.0.4 — fixed in 6.6.140, 6.12.88, 6.18.27, 7.0.4
• Linux: 2.6.22 — fixed in 7.1

How to fix

Upgrade to a fixed version: Linux kernel 6.6.140, 6.12.88, 6.18.27, 7.0.4; Linux 7.1. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/24481a7f573305706054c59e275371f8d0fe919f
• https://git.kernel.org/stable/c/98a2046d155f73f6cf5d2c493c5e09b4963e2e12
• https://git.kernel.org/stable/c/ae19f6a54206534a85830dd92985f5f41441d241
• https://git.kernel.org/stable/c/c0428a22daf69714dc042b67ea759956b74c74e5
• https://git.kernel.org/stable/c/ca71ac2de389b01eecdc48bfafbdf073ec232044
• https://git.kernel.org/stable/c/d9b93a0f57ca5f6831bfaa34014b6cd705564a00

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