CVE-2022-50142
HIGH severity · CVSS 7.8 · Out-of-bounds write
7.8CVSS HIGH
Summary
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.
Impact & exploitability
Attack vectorLocal
Attack complexityLow
Privileges requiredLow
User interactionNone
Confidentiality impactHigh
Integrity impactHigh
Availability impactHigh
Exploit probability (EPSS)0%
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Affected products we track (1)
Recommendation
Apply the vendor fix promptly. Open any affected product above for its exact safe version.
Official patch: https://git.kernel.org/stable/c/0ed72c6bc632cbf8d979ac60f982ff84b7bb610a ↗
Additional information
- NVD record
- https://git.kernel.org/stable/c/0ed72c6bc632cbf8d979ac60f982ff84b7bb610aPatch
- https://git.kernel.org/stable/c/4914c50670b6a531e2cb17cd984cc565b4681312Patch
- https://git.kernel.org/stable/c/566887bad7ff2297d6b3f9659c702ba075f3d62dPatch
- https://git.kernel.org/stable/c/6ae2881c1d1fa0e33f4763b7c786f8ef05a9c828Patch
- https://git.kernel.org/stable/c/ac12ad3ccf6d386e64a9d6a890595a2509d24eddPatch
- https://git.kernel.org/stable/c/b5d924cb4c7b952eaa61622f14427723a78137a3Patch