# CVE-2026-90145: hinic3: Fix skb linearization mismatch and drop skb when skb_checksum_help() failed

CVE-2026-90145 is fixed in linux on 1 platform by DEBIAN-CVE-2026-90145 (version 7.2.6-1), released September 23, 2026. It is not reported as exploited. Patch Radar priority: High.

- Web page: https://patchblox.com/security/cve/CVE-2026-90145
- Priority: High
- CVSS: 7.1 (high)
- EPSS: 0.0016
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Sep 17, 2026
- Vendor advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-90145

## Description

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.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | linux Debian 14 | 7.2.6-1 | [DEBIAN-CVE-2026-90145](https://patchblox.com/security/data/fix/linux/debian-cve-2026-90145.md) | Sep 23, 2026 |

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Data as of 2026-11-08T06:59:42Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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