CVE-2024-50076: vt: prevent kernel-infoleak in con_font_get()
First published: Tue Oct 29 2024(Updated: )
In the Linux kernel, the following vulnerability has been resolved: vt: prevent kernel-infoleak in con_font_get() font.data may not initialize all memory spaces depending on the implementation of vc->vc_sw->con_font_get. This may cause info-leak, so to prevent this, it is safest to modify it to initialize the allocated memory space to 0, and it generally does not affect the overall performance of the system.
Credit: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Linux Kernel | >=6.3<6.6.58 | |
| Linux Kernel | >=6.7<6.11.5 | |
| Linux Kernel | =6.12-rc1 | |
| Linux Kernel | =6.12-rc2 | |
| Linux Kernel | =6.12-rc3 | |
| 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 |
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Reference Links
- https://git.kernel.org/stable/c/efc67cee700b89ffbdb74a0603a083ec1290ae31
- https://git.kernel.org/stable/c/dc794e878e6d79f75205be456b1042a289c5759d
- https://git.kernel.org/stable/c/1e5a17dc77d8a8bbe67040b32e2ef755901aba44
- https://git.kernel.org/stable/c/b3959d5eca136e0588f9af3867b34032160cb826
- https://git.kernel.org/stable/c/23c4cb8a56978e5b1baa171d42e616e316c2039d
- https://git.kernel.org/stable/c/dc2d5f02636c7587bdd6d1f60fc59c55860b00a4
- https://git.kernel.org/stable/c/adb1f312f38f0d2c928ceaff089262798cc260b4
- https://git.kernel.org/stable/c/f956052e00de211b5c9ebaa1958366c23f82ee9e
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2024-50076
- https://nvd.nist.gov/vuln/detail/CVE-2024-50076
- https://launchpad.net/bugs/cve/CVE-2024-50076
- https://security-tracker.debian.org/tracker/CVE-2024-50076
- https://ubuntu.com/security/CVE-2024-50076
- https://git.kernel.org/linus/f956052e00de211b5c9ebaa1958366c23f82ee9e
Frequently Asked Questions
What is the severity of CVE-2024-50076?
CVE-2024-50076 has a medium severity rating due to the potential information leak.
How do I fix CVE-2024-50076?
To fix CVE-2024-50076, update to the latest stable version of the Linux kernel that addresses this vulnerability.
What versions of the Linux kernel are affected by CVE-2024-50076?
CVE-2024-50076 affects Linux kernel versions between 6.3 and 6.6.58, and specific release candidates from version 6.12.
What type of vulnerability is CVE-2024-50076?
CVE-2024-50076 is characterized as an information leak vulnerability in the Linux kernel.
Can CVE-2024-50076 be exploited remotely?
CVE-2024-50076 does not appear to have a remote exploitation vector, but could be leveraged in local environments.
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