CVE-2021-46943

Summary

In the Linux kernel, the following vulnerability has been resolved:

media: staging/intel-ipu3: Fix set_fmt error handling

If there in an error during a set_fmt, do not overwrite the previous sizes with the invalid config.

Without this patch, v4l2-compliance ends up allocating 4GiB of RAM and causing the following OOPs

[ 38.662975] ipu3-imgu 0000:00:05.0: swiotlb buffer is full (sz: 4096 bytes) [ 38.662980] DMA: Out of SW-IOMMU space for 4096 bytes at device 0000:00:05.0 [ 38.663010] general protection fault: 0000 [#1] PREEMPT SMP

Affected Software

VendorProductVersion RangeStatus
LinuxLinux6d5f26f2e045f2377b524516194657c00efbbce8 < a03fb1e8a110658215a4cefc3e2ad53279e496a6affected
LinuxLinux6d5f26f2e045f2377b524516194657c00efbbce8 < c6b81b897f6f9445d57f8d47c4e060ec21556137affected
LinuxLinux6d5f26f2e045f2377b524516194657c00efbbce8 < 34892ea938387d83ffcfb7775ec55f0f80767916affected
LinuxLinux6d5f26f2e045f2377b524516194657c00efbbce8 < 6fb617e37a39db0a3eca4489431359d0bdf3b9bcaffected
LinuxLinux6d5f26f2e045f2377b524516194657c00efbbce8 < ad91849996f9dd79741a961fd03585a683b08356affected
LinuxLinux5.2affected
LinuxLinux0 < 5.2unaffected
LinuxLinux5.4.118 <= 5.4.*unaffected
LinuxLinux5.10.36 <= 5.10.*unaffected
LinuxLinux5.11.20 <= 5.11.*unaffected
LinuxLinux5.12.3 <= 5.12.*unaffected
LinuxLinux5.13 <= *unaffected

Weaknesses

ADP Enrichment

CISA ADP Vulnrichment

  • SSVC:
  • Exploitation: none
    • Automatable: no
    • Technical Impact: partial

CVE Program Container

Additional References

References