CVE-2024-47666

CVE-2024-47666: vulnerability in Linux

scsi: pm80xx: Set phy->enable_completion only when we wait for it

Published · Updated

3Vexday Risk Score

No sign of exploitation. No public exploitation artifact known so far.

ssvc Trackepss 0.2%
exploitation probability
0.2%top 90% of all CVEs
observed exploitation
nono source reports it
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 After 300 ms the pm8001_phy_control() function returns and the passed enable_completion stack address is no longer valid.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.
Affected products
Linux · Linux
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References
https://git.kernel.org/stable/c/7b1d779647afaea9185fa2f150b1721e7c1aae89https://git.kernel.org/stable/c/a5d954802bda1aabcba49633cd94bad91c94113fhttps://git.kernel.org/stable/c/ddc501f4130f4baa787cb6cfa309af697179f475https://git.kernel.org/stable/c/e23ee0cc5bded07e700553aecc333bb20c768546https://git.kernel.org/stable/c/e4f949ef1516c0d74745ee54a0f4882c1f6c7aeahttps://git.kernel.org/stable/c/f14d3e1aa613311c744af32d75125e95fc8ffb84