What’s Vulnerable › Vulnerabilities

CVE-2022-49258: crypto: ccree - Fix use after free in cc_cipher_exit()

• Severity: high (CVSS 7.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2025-02-26 · updated 2026-06-17
• Weakness: CWE-416

Description

In the Linux kernel, the following vulnerability has been resolved: crypto: ccree - Fix use after free in cc_cipher_exit() kfree_sensitive(ctx_p->user.key) will free the ctx_p->user.key. But ctx_p->user.key is still used in the next line, which will lead to a use after free. We can call kfree_sensitive() after dev_dbg() to avoid the uaf.

Affected products

• Linux kernel: from 4.17 before 5.10.110; from 5.11 before 5.15.33; from 5.16 before 5.16.19; from 5.17 before 5.17.2 — fixed in 5.10.110, 5.15.33, 5.16.19, 5.17.2

How to fix

Upgrade to a fixed version: Linux kernel 5.10.110, 5.15.33, 5.16.19, 5.17.2. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/25c358efee5153dfd240d4e0d3169d5bebe9cacd
• https://git.kernel.org/stable/c/335bf1fc74f775a8255257aa3e33763f2257b676
• https://git.kernel.org/stable/c/3d950c34074ed74d2713c3856ba01264523289e6
• https://git.kernel.org/stable/c/c93017c8d5ebf55a4e453ac7c84cc84cf92ab570
• https://git.kernel.org/stable/c/cffb5382bd8d3cf21b874ab5b84bf7618932286b

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