x86: shadow stacks: proper error handling for mmap lock
3Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackepss 0.1%
exploitation probability
0.1%top 98% of all CVEs
observed exploitation
nono source reports it
In the Linux kernel, the following vulnerability has been resolved:
x86: shadow stacks: proper error handling for mmap lock
김영민 reports that shstk_pop_sigframe() doesn't check for errors from
mmap_read_lock_killable(), which is a silly oversight, and also shows
that we haven't marked those functions with "__must_check", which would
have immediately caught it.
So let's fix both issues.
Affected products
Linux · LinuxReferences
https://git.kernel.org/stable/c/1a30468eff661937d978495644d2e5ebfeef5ce6https://git.kernel.org/stable/c/262b6d38a81d51b135db81e1f30c13d30e38feeehttps://git.kernel.org/stable/c/52f657e34d7b21b47434d9d8b26fa7f6778b63a0https://git.kernel.org/stable/c/c64cebcc5c4f223dbcbe7dcdf74908fc092a0aa4https://git.kernel.org/stable/c/c79cf42321600e931933e11f94aba8b245d4cd66