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CVE-2026-31739: crypto: tegra - Add missing CRYPTO_ALG_ASYNC

• Severity: high (CVSS 8.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.4% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-05-01 · updated 2026-10-19
• Weakness: CWE-617

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.

Affected products

• Linux kernel: from 6.10 before 6.12.81; from 6.13 before 6.18.22; from 6.19 before 6.19.12; 7.0-rc1, 7.0-rc2, 7.0-rc3, 7.0-rc4, 7.0-rc5, 7.0-rc6 — fixed in 6.12.81, 6.18.22, 6.19.12

How to fix

Upgrade to a fixed version: Linux kernel 6.12.81, 6.18.22, 6.19.12. Check the vendor advisory for mitigations.

References

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

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