What’s Vulnerable › Vulnerabilities

CVE-2023-52664: net: atlantic: eliminate double free in error handling logic

• 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: 2024-05-17 · updated 2026-08-04
• Weakness: CWE-415

Description

In the Linux kernel, the following vulnerability has been resolved: net: atlantic: eliminate double free in error handling logic Driver has a logic leak in ring data allocation/free, where aq_ring_free could be called multiple times on same ring, if system is under stress and got memory allocation error. Ring pointer was used as an indicator of failure, but this is not correct since only ring data is allocated/deallocated. Ring itself is an array member. Changing ring allocation functions to return error code directly. This simplifies error handling and eliminates aq_ring_free on higher layer.

Affected products

• Linux kernel: before 6.1.77; from 6.2 before 6.6.16; from 6.7 before 6.7.4 — fixed in 6.1.77, 6.6.16, 6.7.4

How to fix

Upgrade to a fixed version: Linux kernel 6.1.77, 6.6.16, 6.7.4. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/0edb3ae8bfa31cd544b0c195bdec00e036002b5d
• https://git.kernel.org/stable/c/b3cb7a830a24527877b0bc900b9bd74a96aea928
• https://git.kernel.org/stable/c/c11a870a73a3bc4cc7df6dd877a45b181795fcbf
• https://git.kernel.org/stable/c/d1fde4a7e1dcc4d49cce285107a7a43c3030878d
• https://git.kernel.org/stable/c/0edb3ae8bfa31cd544b0c195bdec00e036002b5d
• https://git.kernel.org/stable/c/b3cb7a830a24527877b0bc900b9bd74a96aea928
• https://git.kernel.org/stable/c/c11a870a73a3bc4cc7df6dd877a45b181795fcbf
• https://git.kernel.org/stable/c/d1fde4a7e1dcc4d49cce285107a7a43c3030878d

Get alerted when CVE-2023-52664 or the next vulnerability affects your stack