vulnerability

Oracle Linux: CVE-2023-52464: ELSA-2024-4211: kernel security and bug fix update (IMPORTANT) (Multiple Advisories)

Severity
2
CVSS
(AV:L/AC:H/Au:M/C:N/I:P/A:P)
Published
02/23/2024
Added
07/03/2024
Modified
01/07/2025

Description

In the Linux kernel, the following vulnerability has been resolved:
EDAC/thunderx: Fix possible out-of-bounds string access
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. ]
A flaw was found in the Linux Kernel. An improper buffer size is provided to the strncat function, which may result in an out-of-bounds write, leading to memory corruption or a denial of service.

Solution

oracle-linux-upgrade-kernel
Title
NEW

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