CVE-2024-39480

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Source
https://cve.org/CVERecord?id=CVE-2024-39480
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2024-39480.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2024-39480
Downstream
Related
Published
2024-07-05T06:55:09.241Z
Modified
2026-03-14T12:34:43.908350Z
Severity
  • 7.8 (High) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H CVSS Calculator
Summary
kdb: Fix buffer overflow during tab-complete
Details

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.

Database specific 
{
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/39xxx/CVE-2024-39480.json"
}
References

Affected packages

Git / git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git

Affected ranges

Type
GIT
Repo
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Events
Introduced
5d5314d6795f3c1c0f415348ff8c51f7de042b77
Fixed
fb824a99e148ff272a53d71d84122728b5f00992
Fixed
ddd2972d8e2dee3b33e8121669d55def59f0be8a
Fixed
cfdc2fa4db57503bc6d3817240547c8ddc55fa96
Fixed
f636a40834d22e5e3fc748f060211879c056cd33
Fixed
33d9c814652b971461d1e30bead6792851c209e7
Fixed
107e825cc448b7834b31e8b1b3cf0f57426d46d5
Fixed
f694da720dcf795dc3eb97bf76d220213f76aaa7
Fixed
e9730744bf3af04cda23799029342aa3cddbc454

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2024-39480.json"