CVE-2024-47666: scsi: pm80xx: Set phy->enable_completion only when we wait for it
First published: Wed Oct 09 2024(Updated: )
In the Linux kernel, the following vulnerability has been resolved: scsi: pm80xx: Set phy->enable_completion only when we wait for it pm8001_phy_control() populates the enable_completion pointer with a stack address, sends a PHY_LINK_RESET / PHY_HARD_RESET, waits 300 ms, and returns. The problem arises when a phy control response comes late. After 300 ms the pm8001_phy_control() function returns and the passed enable_completion stack address is no longer valid. Late phy control response invokes complete() on a dangling enable_completion pointer which leads to a kernel crash.
Credit: 416baaa9-dc9f-4396-8d5f-8c081fb06d67 416baaa9-dc9f-4396-8d5f-8c081fb06d67
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Linux Kernel | <6.6.51 | |
| Linux Kernel | >=6.7<6.10.10 | |
| debian/linux | <=5.10.223-1<=5.10.226-1<=6.1.123-1<=6.1.119-1 | 6.12.11-1 |
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Reference Links
- https://git.kernel.org/stable/c/7b1d779647afaea9185fa2f150b1721e7c1aae89
- https://git.kernel.org/stable/c/e4f949ef1516c0d74745ee54a0f4882c1f6c7aea
- https://git.kernel.org/stable/c/f14d3e1aa613311c744af32d75125e95fc8ffb84
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2024-47666
- https://nvd.nist.gov/vuln/detail/CVE-2024-47666
- https://launchpad.net/bugs/cve/CVE-2024-47666
- https://security-tracker.debian.org/tracker/CVE-2024-47666
- https://ubuntu.com/security/CVE-2024-47666
- https://git.kernel.org/linus/e4f949ef1516c0d74745ee54a0f4882c1f6c7aea
Frequently Asked Questions
What is the severity of CVE-2024-47666?
CVE-2024-47666 has not been explicitly assigned a severity rating, but it pertains to a vulnerability in the Linux kernel's handling of PHY_LINK_RESET and PHY_HARD_RESET.
How do I fix CVE-2024-47666?
To remediate CVE-2024-47666, update the Linux kernel to versions higher than 6.12.11-1.
Which versions of the Linux kernel are affected by CVE-2024-47666?
CVE-2024-47666 affects Linux kernel versions between 6.7 and 6.6.51, as well as certain 5.10 and 6.1 versions.
What impact does CVE-2024-47666 have on Linux systems?
CVE-2024-47666 may lead to improper handling of PHY reset operations, potentially resulting in system instability.
Is there a workaround for CVE-2024-47666 if I cannot update the kernel?
Currently, there is no known workaround for CVE-2024-47666, and updating to the fixed kernel version is the recommended action.
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