CVE-2024-46823: kunit/overflow: Fix UB in overflow_allocation_test
First published: Fri Sep 27 2024(Updated: )
In the Linux kernel, the following vulnerability has been resolved: kunit/overflow: Fix UB in overflow_allocation_test The 'device_name' array doesn't exist out of the 'overflow_allocation_test' function scope. However, it is being used as a driver name when calling 'kunit_driver_create' from 'kunit_device_register'. It produces the kernel panic with KASAN enabled. Since this variable is used in one place only, remove it and pass the device name into kunit_device_register directly as an ascii string.
Credit: 416baaa9-dc9f-4396-8d5f-8c081fb06d67 416baaa9-dc9f-4396-8d5f-8c081fb06d67
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Linux kernel | <6.10.10 | |
| Linux kernel | =6.11-rc1 | |
| Linux kernel | =6.11-rc2 | |
| Linux kernel | =6.11-rc3 | |
| Linux Kernel | <6.10.10 | |
| Linux Kernel | =6.11-rc1 | |
| Linux Kernel | =6.11-rc2 | |
| Linux Kernel | =6.11-rc3 | |
| debian/linux | <=5.10.223-1<=5.10.234-1<=6.1.129-1 | 6.1.135-1 6.12.22-1 6.12.25-1 |
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Reference Links
- https://launchpad.net/bugs/cve/CVE-2024-46823
- https://git.kernel.org/stable/c/92e9bac18124682c4b99ede9ee3bcdd68f121e92
- https://git.kernel.org/stable/c/d1207f07decc66546a7fa463d2f335a856c986ef
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2024-46823
- https://nvd.nist.gov/vuln/detail/CVE-2024-46823
- https://security-tracker.debian.org/tracker/CVE-2024-46823
- https://ubuntu.com/security/CVE-2024-46823
- https://git.kernel.org/linus/92e9bac18124682c4b99ede9ee3bcdd68f121e92
- https://git.kernel.org/stable/c/cacce7faa7c475cea55e82cc3a27794561fac157
- https://git.kernel.org/stable/c/99ddb9c58511f1b71e23d02a06082bf6d2dd2133
Frequently Asked Questions
What is the severity of CVE-2024-46823?
CVE-2024-46823 is classified as a medium severity vulnerability in the Linux kernel.
How do I fix CVE-2024-46823?
To mitigate CVE-2024-46823, upgrade to Linux kernel version 6.12.11-1 or later.
Which versions of Linux kernel are affected by CVE-2024-46823?
CVE-2024-46823 affects Linux kernel versions up to 6.10.10 and includes 6.11-rc1, 6.11-rc2, and 6.11-rc3.
What is the nature of the vulnerability described in CVE-2024-46823?
CVE-2024-46823 involves a potential undefined behavior due to incorrect handling of the 'device_name' array in the overflow_allocation_test function.
Is CVE-2024-46823 present in Debian Linux packages?
Yes, CVE-2024-46823 is present in certain Debian Linux kernel packages prior to version 6.12.11-1.
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