What’s Vulnerable › Vulnerabilities

CVE-2026-68135: net: hip04: fix RX buffer leak on build_skb failure

• 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: 2026-08-10 · updated 2026-08-19

Description

In the Linux kernel, the following vulnerability has been resolved: net: hip04: fix RX buffer leak on build_skb failure When build_skb() fails in hip04_rx_poll(), the driver jumps to the refill path without releasing the current RX buffer and its DMA mapping. Installing a replacement buffer then overwrites the slot references and leaks both resources. Keep the current slot intact and return budget so NAPI retries the same buffer. Also free a newly allocated RX fragment when dma_map_single() fails. This issue was found by an in-house static analysis tool.

Affected products

• Linux kernel: 4.5 — fixed in 7.2

How to fix

Upgrade to a fixed version: Linux kernel 7.2. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/14fa65d10f5696b063a7d8d26e8291ea84a2c6ed
• https://git.kernel.org/stable/c/2b19fe277645fd1aeb18fd4ecdcf31966080dee7
• https://git.kernel.org/stable/c/67a7614bde310da006ab259f4f163d3fb0f9e253
• https://git.kernel.org/stable/c/690ecc13a4032e5cae1dc6659512f32b033533b0
• https://git.kernel.org/stable/c/80d977f280b4eccd4ac5369871d0ecb2b9c9a49d
• https://git.kernel.org/stable/c/a0f247d63489a107bbc3b712a77b302af2a2a173
• https://git.kernel.org/stable/c/bcd43ee1f25b682151df213c06a99b2e1c1cf2e5
• https://git.kernel.org/stable/c/e054dcd990d8180cde529ea28ce0838e76a5ad5e

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