What’s Vulnerable › Vulnerabilities

CVE-2024-27048: wifi: brcm80211: handle pmk_op allocation failure

• Severity: medium (CVSS 5.5 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: 2024-05-01 · updated 2026-06-17
• Weakness: CWE-476

Description

In the Linux kernel, the following vulnerability has been resolved: wifi: brcm80211: handle pmk_op allocation failure The kzalloc() in brcmf_pmksa_v3_op() will return null if the physical memory has run out. As a result, if we dereference the null value, the null pointer dereference bug will happen. Return -ENOMEM from brcmf_pmksa_v3_op() if kzalloc() fails for pmk_op.

Affected products

• Linux kernel: from 6.4 before 6.6.23; from 6.7 before 6.7.11; from 6.8 before 6.8.2 — fixed in 6.6.23, 6.7.11, 6.8.2

How to fix

Upgrade to a fixed version: Linux kernel 6.6.23, 6.7.11, 6.8.2. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/6138a82f3bccfc67ed7ac059493579fc326c02e5
• https://git.kernel.org/stable/c/9975908315c13bae2f2ed5ba92870fa935180b0e
• https://git.kernel.org/stable/c/b4152222e04cb8afeeca239c90e3fcaf4c553b42
• https://git.kernel.org/stable/c/df62e22c2e27420e8990a4f09e30d7bf56c2036f
• https://git.kernel.org/stable/c/6138a82f3bccfc67ed7ac059493579fc326c02e5
• https://git.kernel.org/stable/c/9975908315c13bae2f2ed5ba92870fa935180b0e
• https://git.kernel.org/stable/c/b4152222e04cb8afeeca239c90e3fcaf4c553b42
• https://git.kernel.org/stable/c/df62e22c2e27420e8990a4f09e30d7bf56c2036f

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