CVE-2026-68135

Summary

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 Software

VendorProductVersion RangeStatus
LinuxLinux701a0fd5231866db08cebcd502894699f49cb960 < e054dcd990d8180cde529ea28ce0838e76a5ad5eaffected
LinuxLinux701a0fd5231866db08cebcd502894699f49cb960 < 67a7614bde310da006ab259f4f163d3fb0f9e253affected
LinuxLinux701a0fd5231866db08cebcd502894699f49cb960 < 80d977f280b4eccd4ac5369871d0ecb2b9c9a49daffected
LinuxLinux701a0fd5231866db08cebcd502894699f49cb960 < a0f247d63489a107bbc3b712a77b302af2a2a173affected
LinuxLinux701a0fd5231866db08cebcd502894699f49cb960 < 14fa65d10f5696b063a7d8d26e8291ea84a2c6edaffected
LinuxLinux4.5affected
LinuxLinux0 < 4.5unaffected
LinuxLinux6.6.148 <= 6.6.*unaffected
LinuxLinux6.12.101 <= 6.12.*unaffected
LinuxLinux6.18.42 <= 6.18.*unaffected
LinuxLinux7.1.6 <= 7.1.*unaffected
LinuxLinux7.2-rc5 <= *unaffected

Weaknesses

References