vulnerability

Amazon Linux AMI: CVE-2024-39480: Security patch for kernel (ALAS-2024-1945)

Severity
7
CVSS
(AV:L/AC:L/Au:S/C:C/I:C/A:C)
Published
07/05/2024
Added
08/07/2024
Modified
03/10/2025

Description

In the Linux kernel, the following vulnerability has been resolved:



kdb: Fix buffer overflow during tab-complete



Currently, when the user attempts symbol completion with the Tab key, kdb


will use strncpy() to insert the completed symbol into the command buffer.


Unfortunately it passes the size of the source buffer rather than the


destination to strncpy() with predictably horrible results. Most obviously


if the command buffer is already full but cp, the cursor position, is in


the middle of the buffer, then we will write past the end of the supplied


buffer.



Fix this by replacing the dubious strncpy() calls with memmove()/memcpy()


calls plus explicit boundary checks to make sure we have enough space


before we start moving characters around.

Solution

amazon-linux-upgrade-kernel
Title
NEW

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