Bug 2427122 (CVE-2025-68759)

Summary: CVE-2025-68759 kernel: wifi: rtl818x: Fix potential memory leaks in rtl8180_init_rx_ring()
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
Status: NEW --- QA Contact:
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Version: unspecifiedCC: rhel-process-autobot, watson-tool-maintainers
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Hardware: All   
OS: Linux   
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Description OSIDB Bzimport 2026-01-05 10:02:52 UTC 
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.
Comment 1 Vipul Nair 2026-01-05 10:40:38 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2026010550-CVE-2025-68759-8638@gregkh/T