CVE-2024-27049: wifi: mt76: mt7925e: fix use-after-free in free_irq()
First published: Wed May 01 2024(Updated: )
In the Linux kernel, the following vulnerability has been resolved: wifi: mt76: mt7925e: fix use-after-free in free_irq() From commit a304e1b82808 ("[PATCH] Debug shared irqs"), there is a test to make sure the shared irq handler should be able to handle the unexpected event after deregistration. For this case, let's apply MT76_REMOVED flag to indicate the device was removed and do not run into the resource access anymore.
Credit: 416baaa9-dc9f-4396-8d5f-8c081fb06d67 416baaa9-dc9f-4396-8d5f-8c081fb06d67
| Affected Software | Affected Version | How to fix |
|---|---|---|
| redhat/kernel | <6.7.11 | 6.7.11 |
| redhat/kernel | <6.8.2 | 6.8.2 |
| redhat/kernel | <6.9 | 6.9 |
| Linux Kernel | >=6.7<6.7.11 | |
| Linux Kernel | >=6.8<6.8.2 | |
| debian/linux | 5.10.223-1 5.10.226-1 6.1.123-1 6.1.119-1 6.12.10-1 6.12.11-1 |
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Reference Links
- https://git.kernel.org/stable/c/6d9930096e1f13cf6d9aabfbf95d0e05fb04144f
- https://git.kernel.org/stable/c/84470b48af03a818039d587478b415cbcb264ff5
- https://git.kernel.org/stable/c/a5a5f4413d91f395cb2d89829d376d7393ad48b9
- https://launchpad.net/bugs/cve/CVE-2024-27049
- https://access.redhat.com/security/cve/CVE-2024-27049
- https://lore.kernel.org/linux-cve-announce/2024050114-CVE-2024-27049-a5a1@gregkh/T
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=2278430
- https://access.redhat.com/errata/RHSA-2024:5363
- https://bugzilla.redhat.com/show_bug.cgi?id=2278429
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2024-27049
- https://nvd.nist.gov/vuln/detail/CVE-2024-27049
- https://security-tracker.debian.org/tracker/CVE-2024-27049
- https://ubuntu.com/security/CVE-2024-27049
- https://git.kernel.org/linus/a5a5f4413d91f395cb2d89829d376d7393ad48b9
Frequently Asked Questions
What is the severity of CVE-2024-27049?
CVE-2024-27049 has a high severity rating due to the potential for a use-after-free condition in the Linux kernel.
How do I fix CVE-2024-27049?
To fix CVE-2024-27049, upgrade the Linux kernel to version 6.7.11, 6.8.2, 6.9, or the specified patched versions provided by your distribution.
What causes CVE-2024-27049?
CVE-2024-27049 is caused by a use-after-free vulnerability related to the consistent handling of shared IRQs in the mt76 driver for Linux.
Which systems are affected by CVE-2024-27049?
CVE-2024-27049 affects various versions of the Linux kernel, including those not upgraded to the patched versions mentioned in the advisory.
Is CVE-2024-27049 actively exploited in the wild?
As of now, there is no public information available indicating that CVE-2024-27049 is actively being exploited in the wild.
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