CVE-2024-0775: Kernel: use-after-free while changing the mount option in __ext4_remount leading
First published: Sun Jan 21 2024(Updated: )
A use-after-free flaw was found in the __ext4_remount in fs/ext4/super.c in ext4 in the Linux kernel. This flaw allows a local user to cause an information leak problem while freeing the old quota file names before a potential failure, leading to a use-after-free.
Credit: secalert@redhat.com secalert@redhat.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| redhat/Kernel | <6.4 | 6.4 |
| Linux kernel | <6.4 | |
| Linux kernel | =6.4-rc1 | |
| Red Hat Enterprise Linux | =9.0 | |
| debian/linux | 5.10.223-1 5.10.234-1 6.1.129-1 6.1.128-1 6.12.20-1 6.12.21-1 |
Remedy
https://scm.linefinity.com/common/linux-stable/commit/4c0b4818b1f636bc96359f7817a2d8bab6370162
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Reference Links
- https://access.redhat.com/security/cve/CVE-2024-0775
- https://bugzilla.redhat.com/show_bug.cgi?id=2259414
- https://scm.linefinity.com/common/linux-stable/commit/4c0b4818b1f636bc96359f7817a2d8bab6370162
- https://launchpad.net/bugs/cve/CVE-2024-0775
- https://git.kernel.org/linus/4c0b4818b1f636bc96359f7817a2d8bab6370162
- https://security-tracker.debian.org/tracker/CVE-2024-0775
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2024-0775
- https://nvd.nist.gov/vuln/detail/CVE-2024-0775
- https://ubuntu.com/security/CVE-2024-0775
Frequently Asked Questions
What is the severity of CVE-2024-0775?
CVE-2024-0775 is classified as a moderate severity vulnerability due to its potential for information leak.
How do I fix CVE-2024-0775?
To fix CVE-2024-0775, update the Linux kernel to version 6.4 or higher, or apply the specified patches for affected versions.
Who is affected by CVE-2024-0775?
CVE-2024-0775 affects local users running specific versions of the Linux kernel, particularly prior to version 6.4.
What types of systems are vulnerable to CVE-2024-0775?
Systems running the ext4 filesystem in affected versions of the Linux kernel are vulnerable to CVE-2024-0775.
Can CVE-2024-0775 lead to remote exploitation?
CVE-2024-0775 is a local vulnerability and does not allow for remote exploitation by adversaries.
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