CVSS3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
AI Score
Confidence
High
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.
Author | Note |
---|---|
Priority reason: Vulnerability is the command line kernel debugger tool. |
OS | Version | Architecture | Package | Version | Filename |
---|---|---|---|---|---|
ubuntu | 20.04 | noarch | linux | < any | UNKNOWN |
ubuntu | 22.04 | noarch | linux | < any | UNKNOWN |
ubuntu | 24.04 | noarch | linux | < any | UNKNOWN |
ubuntu | 20.04 | noarch | linux-aws | < any | UNKNOWN |
ubuntu | 22.04 | noarch | linux-aws | < any | UNKNOWN |
ubuntu | 24.04 | noarch | linux-aws | < any | UNKNOWN |
ubuntu | 20.04 | noarch | linux-aws-5.15 | < any | UNKNOWN |
ubuntu | 22.04 | noarch | linux-aws-6.5 | < any | UNKNOWN |
ubuntu | 20.04 | noarch | linux-azure | < any | UNKNOWN |
ubuntu | 22.04 | noarch | linux-azure | < any | UNKNOWN |
git.kernel.org/linus/e9730744bf3af04cda23799029342aa3cddbc454 (6.10-rc1)
git.kernel.org/stable/c/107e825cc448b7834b31e8b1b3cf0f57426d46d5
git.kernel.org/stable/c/33d9c814652b971461d1e30bead6792851c209e7
git.kernel.org/stable/c/cfdc2fa4db57503bc6d3817240547c8ddc55fa96
git.kernel.org/stable/c/ddd2972d8e2dee3b33e8121669d55def59f0be8a
git.kernel.org/stable/c/e9730744bf3af04cda23799029342aa3cddbc454
git.kernel.org/stable/c/f636a40834d22e5e3fc748f060211879c056cd33
git.kernel.org/stable/c/f694da720dcf795dc3eb97bf76d220213f76aaa7
git.kernel.org/stable/c/fb824a99e148ff272a53d71d84122728b5f00992
launchpad.net/bugs/cve/CVE-2024-39480
nvd.nist.gov/vuln/detail/CVE-2024-39480
security-tracker.debian.org/tracker/CVE-2024-39480
www.cve.org/CVERecord?id=CVE-2024-39480