intel_th: msu: Fix vmalloced buffers
3Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackepss 0.2%
exploitation probability
0.2%top 94% of all CVEs
observed exploitation
nono source reports it
In the Linux kernel, the following vulnerability has been resolved:
intel_th: msu: Fix vmalloced buffers
After commit f5ff79fddf0e ("dma-mapping: remove CONFIG_DMA_REMAP") there's
a chance of DMA buffer getting allocated via vmalloc(), which messes up
the mmapping code:
> RIP: msc_mmap_fault [intel_th_msu]
> Call Trace:
> <TASK>
> __do_fault
> do_fault
...
Fix this by accounting for vmalloc possibility.
Affected products
Linux · LinuxReferences
https://git.kernel.org/stable/c/0ed72c6bc632cbf8d979ac60f982ff84b7bb610ahttps://git.kernel.org/stable/c/4914c50670b6a531e2cb17cd984cc565b4681312https://git.kernel.org/stable/c/566887bad7ff2297d6b3f9659c702ba075f3d62dhttps://git.kernel.org/stable/c/6ae2881c1d1fa0e33f4763b7c786f8ef05a9c828https://git.kernel.org/stable/c/ac12ad3ccf6d386e64a9d6a890595a2509d24eddhttps://git.kernel.org/stable/c/b5d924cb4c7b952eaa61622f14427723a78137a3