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.
References
| Link | Resource |
|---|---|
| https://git.kernel.org/stable/c/107e825cc448b7834b31e8b1b3cf0f57426d46d5 | Mailing List Patch |
| https://git.kernel.org/stable/c/33d9c814652b971461d1e30bead6792851c209e7 | Mailing List Patch |
| https://git.kernel.org/stable/c/cfdc2fa4db57503bc6d3817240547c8ddc55fa96 | Mailing List Patch |
| https://git.kernel.org/stable/c/ddd2972d8e2dee3b33e8121669d55def59f0be8a | Mailing List Patch |
| https://git.kernel.org/stable/c/e9730744bf3af04cda23799029342aa3cddbc454 | Mailing List Patch |
| https://git.kernel.org/stable/c/f636a40834d22e5e3fc748f060211879c056cd33 | Mailing List Patch |
| https://git.kernel.org/stable/c/f694da720dcf795dc3eb97bf76d220213f76aaa7 | Mailing List Patch |
| https://git.kernel.org/stable/c/fb824a99e148ff272a53d71d84122728b5f00992 | Mailing List Patch |
Configurations
Configuration 1 (hide)
|
History
No history.
Information
Published : 2024-07-05 07:15
Updated : 2024-07-08 18:01
NVD link : CVE-2024-39480
Mitre link : CVE-2024-39480
CVE.ORG link : CVE-2024-39480
JSON object : View
Products Affected
linux
- linux_kernel
CWE
CWE-120
Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')