UBUNTU-CVE-2024-38553
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.
02 / AFFECTED SOFTWARE
Affected packages
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03 / CONNECTIONS
Connected vulnerabilities
04 / EVIDENCE
Source records
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.
05 / REFERENCES
Further evidence
- https://git.kernel.org/linus/c2e0c58b25a0a0c37ec643255558c5af4450c9f5
- 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://ubuntu.com/security/CVE-2024-38553
- https://ubuntu.com/security/notices/USN-6949-1
- https://ubuntu.com/security/notices/USN-6949-2
- https://ubuntu.com/security/notices/USN-6952-1
- https://ubuntu.com/security/notices/USN-6952-2
- https://ubuntu.com/security/notices/USN-6955-1
- https://ubuntu.com/security/notices/USN-7173-1
- https://ubuntu.com/security/notices/USN-7173-2
- https://ubuntu.com/security/notices/USN-7173-3
- https://ubuntu.com/security/notices/USN-7179-1
- https://ubuntu.com/security/notices/USN-7179-2
- https://ubuntu.com/security/notices/USN-7179-3
- https://ubuntu.com/security/notices/USN-7179-4
- https://ubuntu.com/security/notices/USN-7186-1
- https://ubuntu.com/security/notices/USN-7186-2
- https://ubuntu.com/security/notices/USN-7194-1
- https://ubuntu.com/security/notices/USN-7195-1
- https://ubuntu.com/security/notices/USN-7195-2
- https://ubuntu.com/security/notices/USN-7233-1
- https://ubuntu.com/security/notices/USN-7233-2
- https://ubuntu.com/security/notices/USN-7233-3
- https://ubuntu.com/security/notices/USN-7262-1
- https://ubuntu.com/security/notices/USN-7262-2
- https://ubuntu.com/security/notices/USN-7413-1
- https://www.cve.org/CVERecord?id=CVE-2024-38553