CVE-2026-53371

CVE CVE-2026-53371EUVD EUVD-2026-45441Published 2026-07-19T09:10:31.000Z

What the advisory describes

In the Linux kernel, the following vulnerability has been resolved: RDMA/ionic: bound node_desc sysfs read with %.64s node_desc[64] in struct ib_device is not guaranteed to be NUL- terminated. The core IB sysfs handler uses "%.64s" for exactly this reason (drivers/infiniband/core/sysfs.c:1307), since node_desc_store() performs a raw memcpy of up to IB_DEVICE_NODE_DESC_MAX bytes with no NUL termination: memcpy(desc.node_desc, buf, min_t(int, count, IB_DEVICE_NODE_DESC_MAX)); If exactly 64 bytes are written via the node_desc sysfs file, the array contains no NUL byte. The ionic hca_type_show() handler uses unbounded "%s" and will read past the end of node_desc into adjacent fields of struct ib_device until it encounters a NUL. ionic supports IB_DEVICE_MODIFY_NODE_DESC, so this is triggerable by userspace. Match the core handler and bound the format specifier.

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 2075bbe8ef03914aa2211035eec45d1d3a5c4ff2 <654a27f25530d052eeedf086e6c3e2d585c203bd; patch: 7.1; patch: 6.18.30; 2075bbe8ef03914aa2211035eec45d1d3a5c4ff2 <61df14f306f153bffa2f3c74a94ff5a85c99fa39; patch: 7.0.7; 6.18; patch: 0; 2075bbe8ef03914aa2211035eec45d1d3a5c4ff2 <a3e9372203afde2c62576356bb9a17890bc7fd6c

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

An estate covering these products can be recorded in Patchlage. An advisory about them appears in the next morning's situation report.

• Linux — Linux

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