CVE - CVE-2024-39480

CVE-ID
CVE-2024-39480	Learn more at National Vulnerability Database (NVD) • CVSS Severity Rating • Fix Information • Vulnerable Software Versions • SCAP Mappings • CPE Information
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.
References
Note: References are provided for the convenience of the reader to help distinguish between vulnerabilities. The list is not intended to be complete.
MISC:https://git.kernel.org/stable/c/107e825cc448b7834b31e8b1b3cf0f57426d46d5 URL:https://git.kernel.org/stable/c/107e825cc448b7834b31e8b1b3cf0f57426d46d5 MISC:https://git.kernel.org/stable/c/33d9c814652b971461d1e30bead6792851c209e7 URL:https://git.kernel.org/stable/c/33d9c814652b971461d1e30bead6792851c209e7 MISC:https://git.kernel.org/stable/c/cfdc2fa4db57503bc6d3817240547c8ddc55fa96 URL:https://git.kernel.org/stable/c/cfdc2fa4db57503bc6d3817240547c8ddc55fa96 MISC:https://git.kernel.org/stable/c/ddd2972d8e2dee3b33e8121669d55def59f0be8a URL:https://git.kernel.org/stable/c/ddd2972d8e2dee3b33e8121669d55def59f0be8a MISC:https://git.kernel.org/stable/c/e9730744bf3af04cda23799029342aa3cddbc454 URL:https://git.kernel.org/stable/c/e9730744bf3af04cda23799029342aa3cddbc454 MISC:https://git.kernel.org/stable/c/f636a40834d22e5e3fc748f060211879c056cd33 URL:https://git.kernel.org/stable/c/f636a40834d22e5e3fc748f060211879c056cd33 MISC:https://git.kernel.org/stable/c/f694da720dcf795dc3eb97bf76d220213f76aaa7 URL:https://git.kernel.org/stable/c/f694da720dcf795dc3eb97bf76d220213f76aaa7 MISC:https://git.kernel.org/stable/c/fb824a99e148ff272a53d71d84122728b5f00992 URL:https://git.kernel.org/stable/c/fb824a99e148ff272a53d71d84122728b5f00992
Assigning CNA
kernel.org
Date Record Created
20240625	Disclaimer: The record creation date may reflect when the CVE ID was allocated or reserved, and does not necessarily indicate when this vulnerability was discovered, shared with the affected vendor, publicly disclosed, or updated in CVE.
Phase (Legacy)
Assigned (20240625)
Votes (Legacy)

Comments (Legacy)

Proposed (Legacy)
N/A
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