7.8
CWE
119
Advisory Published
CVE Published
Updated

CVE-2023-52464: EDAC/thunderx: Fix possible out-of-bounds string access

First published: Fri Feb 23 2024(Updated: )

Enabling -Wstringop-overflow globally exposes a warning for a common bug in the usage of strncat(): drivers/edac/thunderx_edac.c: In function 'thunderx_ocx_com_threaded_isr': drivers/edac/thunderx_edac.c:1136:17: error: 'strncat' specified bound 1024 equals destination size [-Werror=stringop-overflow=] 1136 | strncat(msg, other, OCX_MESSAGE_SIZE); | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ... 1145 | strncat(msg, other, OCX_MESSAGE_SIZE); ... 1150 | strncat(msg, other, OCX_MESSAGE_SIZE); ... Apparently the author of this driver expected strncat() to behave the way that strlcat() does, which uses the size of the destination buffer as its third argument rather than the length of the source buffer. The result is that there is no check on the size of the allocated buffer. Change it to strlcat(). [ bp: Trim compiler output, fixup commit message. ]

Credit: 416baaa9-dc9f-4396-8d5f-8c081fb06d67 416baaa9-dc9f-4396-8d5f-8c081fb06d67

Affected SoftwareAffected VersionHow to fix
Linux Linux kernel>=4.12.0<4.19.306
Linux Linux kernel>=4.20.0<5.4.268
Linux Linux kernel>=5.5.0<5.10.209
Linux Linux kernel>=5.11.0<5.15.148
Linux Linux kernel>=5.16.0<6.1.75
Linux Linux kernel>=6.2.0<6.6.14
Linux Linux kernel>=6.7.0<6.7.2
redhat/kernel<6.8
6.8
debian/linux
5.10.223-1
5.10.226-1
6.1.115-1
6.1.119-1
6.11.10-1
>=4.12.0<4.19.306
>=4.20.0<5.4.268
>=5.5.0<5.10.209
>=5.11.0<5.15.148
>=5.16.0<6.1.75
>=6.2.0<6.6.14
>=6.7.0<6.7.2

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