CVE-2026-97957

CVE CVE-2026-97957EUVD EUVD-2026-86811Published 2026-09-25T10:23:03.000ZLast changed 2026-09-25T14:41:45.000ZCVSS 8.8

What the advisory describes

In the Linux kernel, the following vulnerability has been resolved: net: hinic: fix mailbox segment buffer overflow check_mbox_seq_id_and_seg_len() validates that seq_id does not exceed SEQ_ID_MAX_VAL (42) and seg_len does not exceed MBOX_SEG_LEN (48). However, this allows the last segment (seq_id=42) to carry a full 48-byte payload, writing to offset 42*48=2016 for 48 bytes (ending at byte 2064). The receive buffer is only MBOX_MAX_BUF_SZ (2048) bytes, resulting in a 16-byte heap buffer overflow. The hinic3 driver already handles this correctly by defining MBOX_LAST_SEG_MAX_LEN and rejecting the last segment when it exceeds the remaining buffer space. Apply the same fix to the hinic driver.

Source: EUVD (ENISA), in the words of the advisory.

Products the advisory names

These come from the advisory itself, not from any check we performed.

Linux — Linux patch: 6.18.53; 5.8; a425b6e1c69ba907b72b737a4d44f8cfbc43ce3c <513f7b16ed0cffae9348151c72bed17c7073096f; a425b6e1c69ba907b72b737a4d44f8cfbc43ce3c <eca54a092d5f7b497b458ff5a6f66d4f7bfb6674; patch: 6.12.111; patch: 7.3-rc3; patch: 7.2.7; a425b6e1c69ba907b72b737a4d44f8cfbc43ce3c <9f6ad383901d0cb1c8ea5f7f3160fabfe1540eb5; patch: 0; a425b6e1c69ba907b72b737a4d44f8cfbc43ce3c <5d4d985957434867bbe85e4fa5e638f3e48ad522

The versions shown are the advisory's own. Patchlage compares no version numbers and derives no judgement from them — which version is installed is something a person has to look up.

Carried in the product catalogue

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Linux — Linux

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