CVE-2026-90145

Summary

In the Linux kernel, the following vulnerability has been resolved:

hinic3: Fix skb linearization mismatch and drop skb when skb_checksum_help() failed

Previously, hinic3_send_one_skb() cached the skb fragment count before calling hinic3_tx_offload(). If hinic3_tx_csum() falls back to skb_checksum_help() for unsupported tunnel packets, the skb may be linearized. Continuing to build the TX descriptor with the stale fragment count leads to a descriptor mismatch, which can trigger out-of-bounds DMA reads or IOMMU faults.

Furthermore, the old code ignored the return value of skb_checksum_help(), transmitting corrupted packets with incomplete checksums upon failure.

Fix this by:

  1. Moving the hinic3_tx_offload() call before calculating 'num_sge' to ensure the correct fragment count is used if the SKB is linearized.
  2. Propagating skb_checksum_help() errors and returning HINIC3_TX_OFFLOAD_INVALID to properly drop the skb.

Affected Software

VendorProductVersion RangeStatus
LinuxLinux17fcb3dc12bbee8ec3e32ca1f60898f252e06b2d < e794cdc5c369c1b06359e2fe03a8d9270f56beadaffected
LinuxLinux17fcb3dc12bbee8ec3e32ca1f60898f252e06b2d < 96c3959770386b2913c62005f0d0c3151e0c01c3affected
LinuxLinux17fcb3dc12bbee8ec3e32ca1f60898f252e06b2d < d0c2bed6927cbfa2cb51f240b4812bf6916bce0eaffected
LinuxLinux6.16affected
LinuxLinux0 < 6.16unaffected
LinuxLinux6.18.52 <= 6.18.*unaffected
LinuxLinux7.2.6 <= 7.2.*unaffected
LinuxLinux7.3-rc1 <= *unaffected

Weaknesses

References