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.
References
Configurations
Configuration 1 (hide)
|
History
29 Jul 2026, 16:55
| Type | Values Removed | Values Added |
|---|---|---|
| CVSS |
v2 : v3 : |
v2 : unknown
v3 : 5.5 |
| CPE | cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | |
| CWE | NVD-CWE-noinfo | |
| First Time |
Linux linux Kernel
Linux |
|
| References | () https://git.kernel.org/stable/c/61df14f306f153bffa2f3c74a94ff5a85c99fa39 - Patch | |
| References | () https://git.kernel.org/stable/c/654a27f25530d052eeedf086e6c3e2d585c203bd - Patch | |
| References | () https://git.kernel.org/stable/c/a3e9372203afde2c62576356bb9a17890bc7fd6c - Patch |
19 Jul 2026, 09:17
| Type | Values Removed | Values Added |
|---|---|---|
| New CVE |
Information
Published : 2026-07-19 09:17
Updated : 2026-07-29 16:55
NVD link : CVE-2026-53371
Mitre link : CVE-2026-53371
CVE.ORG link : CVE-2026-53371
JSON object : View
Products Affected
linux
- linux_kernel
CWE