- Vulnerability/
- CVE-2024-43830
CVE-2024-43830: leds: trigger: Unregister sysfs attributes before calling deactivate()
First published: Sat Aug 17 2024(Updated: )
In the Linux kernel, the following vulnerability has been resolved: leds: trigger: Unregister sysfs attributes before calling deactivate() Triggers which have trigger specific sysfs attributes typically store related data in trigger-data allocated by the activate() callback and freed by the deactivate() callback. Calling device_remove_groups() after calling deactivate() leaves a window where the sysfs attributes show/store functions could be called after deactivation and then operate on the just freed trigger-data. Move the device_remove_groups() call to before deactivate() to close this race window. This also makes the deactivation path properly do things in reverse order of the activation path which calls the activate() callback before calling device_add_groups().
Credit: 416baaa9-dc9f-4396-8d5f-8c081fb06d67 416baaa9-dc9f-4396-8d5f-8c081fb06d67
| Affected Software | Affected Version | How to fix |
|---|---|---|
| debian/linux | <=5.10.223-1 | 5.10.226-1 6.1.123-1 6.1.119-1 6.12.11-1 6.12.12-1 |
| debian/linux-6.1 | 6.1.119-1~deb11u1 |
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Reference Links
- https://git.kernel.org/stable/c/0788a6f3523d3686a9eed5ea1e6fcce6841277b2
- https://git.kernel.org/stable/c/09c1583f0e10c918855d6e7540a79461a353e5d6
- https://git.kernel.org/stable/c/3fb6a9d67cfd812a547ac73ec02e1077c26c640d
- https://git.kernel.org/stable/c/734ba6437e80dfc780e9ee9d95f912392d12b5ea
- https://git.kernel.org/stable/c/c0dc9adf9474ecb7106e60e5472577375aedaed3
- https://git.kernel.org/stable/c/c3b7a650c8717aa89df318364609c86cbc040156
- https://git.kernel.org/stable/c/cb8aa9d2a4c8a15d6a43ccf901ef3d094aa60374
- https://git.kernel.org/stable/c/d1415125b701ef13370e2761f691ec632a5eb93a
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2024-43830
- https://nvd.nist.gov/vuln/detail/CVE-2024-43830
- https://launchpad.net/bugs/cve/CVE-2024-43830
- https://security-tracker.debian.org/tracker/CVE-2024-43830
- https://ubuntu.com/security/CVE-2024-43830
- https://git.kernel.org/linus/c0dc9adf9474ecb7106e60e5472577375aedaed3
Frequently Asked Questions
What is the severity of CVE-2024-43830?
CVE-2024-43830 is considered a vulnerability in the Linux kernel related to improper handling of sysfs attributes.
How do I fix CVE-2024-43830?
To fix CVE-2024-43830, update to the patched versions of the Linux kernel as specified in the advisory.
What are the affected versions of Linux for CVE-2024-43830?
CVE-2024-43830 affects Linux kernel versions up to 5.10.223-1 and specific 6.1 versions prior to their patched releases.
What impact does CVE-2024-43830 have on system security?
CVE-2024-43830 may lead to potential exploitation due to improper attribute deactivation in Linux kernel triggers.
Is CVE-2024-43830 specific to a certain Linux distribution?
CVE-2024-43830 primarily affects Debian-based distributions that utilize the specified Linux kernel versions.
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