CVE-2024-38553: net: fec: remove .ndo_poll_controller to avoid deadlocks
First published: Wed Jun 19 2024(Updated: )
In the Linux kernel, the following vulnerability has been resolved: net: fec: remove .ndo_poll_controller to avoid deadlocks There is a deadlock issue found in sungem driver, please refer to the commit ac0a230f719b ("eth: sungem: remove .ndo_poll_controller to avoid deadlocks"). The root cause of the issue is that netpoll is in atomic context and disable_irq() is called by .ndo_poll_controller interface of sungem driver, however, disable_irq() might sleep. After analyzing the implementation of fec_poll_controller(), the fec driver should have the same issue. Due to the fec driver uses NAPI for TX completions, the .ndo_poll_controller is unnecessary to be implemented in the fec driver, so fec_poll_controller() can be safely removed.
Credit: 416baaa9-dc9f-4396-8d5f-8c081fb06d67 416baaa9-dc9f-4396-8d5f-8c081fb06d67
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Linux kernel | >=3.2<6.6.33 | |
| Linux kernel | >=6.7<6.8.12 | |
| Linux kernel | >=6.9<6.9.3 | |
| Linux Kernel | >=3.2<6.6.33 | |
| Linux Kernel | >=6.7<6.8.12 | |
| Linux Kernel | >=6.9<6.9.3 | |
| debian/linux | <=5.10.223-1<=5.10.234-1 | 6.1.129-1 6.1.135-1 6.12.22-1 6.12.25-1 |
| debian/linux-6.1 | 6.1.129-1~deb11u1 |
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Reference Links
- https://git.kernel.org/stable/c/87bcbc9b7e0b43a69d44efa5f32f11e32d08fa6f
- https://git.kernel.org/stable/c/accdd6b912c4219b8e056d1f1ad2e85bc66ee243
- https://git.kernel.org/stable/c/c2e0c58b25a0a0c37ec643255558c5af4450c9f5
- https://git.kernel.org/stable/c/d38625f71950e79e254515c5fc585552dad4b33e
- https://launchpad.net/bugs/cve/CVE-2024-38553
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2024-38553
- https://nvd.nist.gov/vuln/detail/CVE-2024-38553
- https://security-tracker.debian.org/tracker/CVE-2024-38553
- https://ubuntu.com/security/CVE-2024-38553
- https://git.kernel.org/linus/c2e0c58b25a0a0c37ec643255558c5af4450c9f5
- https://git.kernel.org/stable/c/e2348d8c61d03feece1de4c05f72e6e99f74c650
Frequently Asked Questions
What is the severity of CVE-2024-38553?
CVE-2024-38553 has a moderate severity level due to the potential for deadlocks affecting system stability.
How do I fix CVE-2024-38553?
To mitigate CVE-2024-38553, upgrade to the patched versions of the Linux kernel as specified in the advisory.
Which Linux kernel versions are affected by CVE-2024-38553?
CVE-2024-38553 affects Linux kernel versions prior to 5.10.223-1, among others.
What components are specifically impacted by CVE-2024-38553?
CVE-2024-38553 specifically impacts the sungem driver in the Linux kernel networking stack.
Is there a patch available for CVE-2024-38553?
Yes, patches for CVE-2024-38553 are available in the updated versions of the Linux kernel.
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