CVE-2022-50142
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…
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.19%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
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.
- CVSS 3.1
- 7.8 HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 0.19% probability · 8th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-787
- Affected
- linux/linux kernel
- Source
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67
References
- 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
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.