What’s Vulnerable › Vulnerabilities

CVE-2025-68759: wifi: rtl818x: Fix potential memory leaks in rtl8180_init_rx_ring()

• Severity: unknown
• 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: 2026-01-05 · updated 2026-10-14

Description

In the Linux kernel, the following vulnerability has been resolved: wifi: rtl818x: Fix potential memory leaks in rtl8180_init_rx_ring() In rtl8180_init_rx_ring(), memory is allocated for skb packets and DMA allocations in a loop. When an allocation fails, the previously successful allocations are not freed on exit. Fix that by jumping to err_free_rings label on error, which calls rtl8180_free_rx_ring() to free the allocations. Remove the free of rx_ring in rtl8180_init_rx_ring() error path, and set the freed priv->rx_buf entry to null, to avoid double free.

Affected products

• Linux kernel: 2.6.25 — fixed in 6.19

How to fix

Upgrade to a fixed version: Linux kernel 6.19. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/3677c01891fb0239361e444afee8398868e34bdf
• https://git.kernel.org/stable/c/89caaeee8dd95fae8bb4f4964e6fe3ca688500c4
• https://git.kernel.org/stable/c/9b5b9c042b30befc5b37e4539ace95af70843473
• https://git.kernel.org/stable/c/a4fb7cca9837378878e6c94d9e7af019c8fdfcdb
• https://git.kernel.org/stable/c/a813a74570212cb5f3a7d3b05c0cb0cd00bace1d
• https://git.kernel.org/stable/c/bf8513dfa31ea015c9cf415796dca2113d293840
• https://git.kernel.org/stable/c/c9d1c4152e6d32fa74034464854bee262a60bc43
• https://git.kernel.org/stable/c/ee7db11742b30641f21306105ad27a275e3c61d7

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