What’s Vulnerable › Vulnerabilities

CVE-2022-50321: wifi: brcmfmac: fix potential memory leak in brcmf_netdev_start_xmit()

• 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: 2025-09-15 · updated 2026-06-17
• Weakness: CWE-401

Description

In the Linux kernel, the following vulnerability has been resolved: wifi: brcmfmac: fix potential memory leak in brcmf_netdev_start_xmit() The brcmf_netdev_start_xmit() returns NETDEV_TX_OK without freeing skb in case of pskb_expand_head() fails, add dev_kfree_skb() to fix it. Compile tested only.

Affected products

• Linux kernel: from 4.13 before 4.14.308; from 4.15 before 4.19.276; from 4.20 before 5.4.235; from 5.5 before 5.10.173; from 5.11 before 5.15.99; from 5.16 before 6.1.16 — fixed in 4.14.308, 4.19.276, 5.10.173, 5.15.99, 5.4.235, 6.1.16

How to fix

Upgrade to a fixed version: Linux kernel 4.14.308, 4.19.276, 5.10.173, 5.15.99. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/212fde3fe76e962598ce1d47b97cc78afdfc71b3
• https://git.kernel.org/stable/c/3a4d18318f473e97d628f410215b3fac32d07aed
• https://git.kernel.org/stable/c/4c55fdebc1c358de96bfab52ed309d58a3ba66ef
• https://git.kernel.org/stable/c/7f159116d620615779adbf88a5d94713702216d8
• https://git.kernel.org/stable/c/d869a189505224601e310c7769cb90b0e2f60b31
• https://git.kernel.org/stable/c/e08e6812efb6a8c676e733de0518594d1517e0d9
• https://git.kernel.org/stable/c/e5d01e85cf46628647cd696cb72ba4659b18967f
• https://git.kernel.org/stable/c/e8ef89e5b89ee041a94eecfb6c31fcc237f9168c

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