Description
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 After 300 ms the pm8001_phy_control() function returns and the passed enable_completion stack address is no longer valid.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.
References
https://git.kernel.org/stable/c/7b1d779647afaea9185fa2f150b1721e7c1aae89
https://git.kernel.org/stable/c/f14d3e1aa613311c744af32d75125e95fc8ffb84
https://git.kernel.org/stable/c/e4f949ef1516c0d74745ee54a0f4882c1f6c7aea
