CVE-2024-50188: net: phy: dp83869: fix memory corruption when enabling fiber
First published: Fri Nov 08 2024(Updated: )
In the Linux kernel, the following vulnerability has been resolved: net: phy: dp83869: fix memory corruption when enabling fiber When configuring the fiber port, the DP83869 PHY driver incorrectly calls linkmode_set_bit() with a bit mask (1 << 10) rather than a bit number (10). This corrupts some other memory location -- in case of arm64 the priv pointer in the same structure. Since the advertising flags are updated from supported at the end of the function the incorrect line isn't needed at all and can be removed.
Credit: 416baaa9-dc9f-4396-8d5f-8c081fb06d67 416baaa9-dc9f-4396-8d5f-8c081fb06d67
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Linux Kernel | >=5.10<5.10.227 | |
| Linux Kernel | >=5.11<5.15.168 | |
| Linux Kernel | >=5.16<6.1.113 | |
| Linux Kernel | >=6.2<6.6.57 | |
| Linux Kernel | >=6.7<6.11.4 | |
| Linux Kernel | =6.12-rc1 | |
| Linux Kernel | =6.12-rc2 | |
| debian/linux | <=5.10.223-1<=5.10.226-1 | 6.1.123-1 6.1.128-1 6.12.12-1 6.12.15-1 |
| debian/linux-6.1 | 6.1.119-1~deb11u1 |
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Reference Links
- https://git.kernel.org/stable/c/21b5af7f0c99b3bf1fd02016e6708b613acbcaf4
- https://git.kernel.org/stable/c/9ca634676ff66e1d616259e136f96f96b2a1759a
- https://git.kernel.org/stable/c/a842e443ca8184f2dc82ab307b43a8b38defd6a5
- https://git.kernel.org/stable/c/ad0d76b8ee5db063791cc2e7a30ffc9852ac37c4
- https://git.kernel.org/stable/c/c1944b4253649fc6f2fb53e7d6302eb414d2182c
- https://git.kernel.org/stable/c/e3f2de32dae35bc7d173377dc97b5bc9fcd9fc84
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2024-50188
- https://nvd.nist.gov/vuln/detail/CVE-2024-50188
- https://launchpad.net/bugs/cve/CVE-2024-50188
- https://security-tracker.debian.org/tracker/CVE-2024-50188
- https://ubuntu.com/security/CVE-2024-50188
- https://git.kernel.org/linus/a842e443ca8184f2dc82ab307b43a8b38defd6a5
Frequently Asked Questions
What is the severity of CVE-2024-50188?
CVE-2024-50188 has not been assigned a CVSS score, but it relates to memory corruption, indicating a potential high severity based on impact.
How do I fix CVE-2024-50188?
To fix CVE-2024-50188, update your Linux kernel to a version that is not affected by this vulnerability, such as 6.1.123-1 or higher.
Which versions of the Linux kernel are affected by CVE-2024-50188?
CVE-2024-50188 affects Linux kernel versions between 5.10.0 and 6.12-rc2.
What kind of vulnerability is CVE-2024-50188?
CVE-2024-50188 is a memory corruption vulnerability in the DP83869 PHY driver when configuring the fiber port.
Is there a workaround for CVE-2024-50188?
There is no documented workaround for CVE-2024-50188; updating the kernel is the recommended mitigation.
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