What’s Vulnerable › Vulnerabilities

CVE-2021-47057: crypto: sun8i-ss - Fix memory leak of object d when dma_iv fails to map

• 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: 2024-02-29 · updated 2026-06-17
• Weakness: CWE-770

Description

In the Linux kernel, the following vulnerability has been resolved: crypto: sun8i-ss - Fix memory leak of object d when dma_iv fails to map In the case where the dma_iv mapping fails, the return error path leaks the memory allocated to object d. Fix this by adding a new error return label and jumping to this to ensure d is free'd before the return. 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/617ec35ed51f731a593ae7274228ef2cfc9cb781
• https://git.kernel.org/stable/c/6516cb852d704ff8d615de1f93cd443a99736c3d
• https://git.kernel.org/stable/c/98b5ef3e97b16eaeeedb936f8bda3594ff84a70e
• https://git.kernel.org/stable/c/e1f2d739849c3239df1ea3f97d40bade4b808410
• https://git.kernel.org/stable/c/617ec35ed51f731a593ae7274228ef2cfc9cb781
• https://git.kernel.org/stable/c/6516cb852d704ff8d615de1f93cd443a99736c3d
• https://git.kernel.org/stable/c/98b5ef3e97b16eaeeedb936f8bda3594ff84a70e
• https://git.kernel.org/stable/c/e1f2d739849c3239df1ea3f97d40bade4b808410

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