What’s Vulnerable › Vulnerabilities

CVE-2021-47052: crypto: sa2ul - Fix memory leak of rxd

• Severity: medium (CVSS 5.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2024-02-28 · updated 2026-06-17
• Weakness: CWE-401

Description

In the Linux kernel, the following vulnerability has been resolved: crypto: sa2ul - Fix memory leak of rxd There are two error return paths that are not freeing rxd and causing memory leaks. Fix these. Addresses-Coverity: ("Resource leak")

Affected products

• Linux kernel: from 5.10 before 5.10.37; from 5.11 before 5.11.21; from 5.12 before 5.12.4 — fixed in 5.10.37, 5.11.21, 5.12.4

How to fix

Upgrade to a fixed version: Linux kernel 5.10.37, 5.11.21, 5.12.4. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/0e596b3734649041ed77edc86a23c0442bbe062b
• https://git.kernel.org/stable/c/854b7737199848a91f6adfa0a03cf6f0c46c86e8
• https://git.kernel.org/stable/c/b7bd0657c2036add71981d88a7fae50188150b6e
• https://git.kernel.org/stable/c/dfd6443bf49ac17adf882ca46c40c506a0284bd6
• https://git.kernel.org/stable/c/0e596b3734649041ed77edc86a23c0442bbe062b
• https://git.kernel.org/stable/c/854b7737199848a91f6adfa0a03cf6f0c46c86e8
• https://git.kernel.org/stable/c/b7bd0657c2036add71981d88a7fae50188150b6e
• https://git.kernel.org/stable/c/dfd6443bf49ac17adf882ca46c40c506a0284bd6

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