Vulnerability Details : CVE-2021-46943
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
Products affected by CVE-2021-46943
- cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2021-46943
0.04%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 5 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2021-46943
Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
---|---|---|---|---|---|---|
7.8
|
HIGH | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
1.8
|
5.9
|
NIST | 2024-04-10 |
CWE ids for CVE-2021-46943
-
The product does not correctly calculate the size to be used when allocating a buffer, which could lead to a buffer overflow.Assigned by: nvd@nist.gov (Primary)
References for CVE-2021-46943
-
https://git.kernel.org/stable/c/34892ea938387d83ffcfb7775ec55f0f80767916
media: staging/intel-ipu3: Fix set_fmt error handling - kernel/git/stable/linux.git - Linux kernel stable treePatch
-
https://git.kernel.org/stable/c/a03fb1e8a110658215a4cefc3e2ad53279e496a6
media: staging/intel-ipu3: Fix set_fmt error handling - kernel/git/stable/linux.git - Linux kernel stable treePatch
-
https://git.kernel.org/stable/c/ad91849996f9dd79741a961fd03585a683b08356
media: staging/intel-ipu3: Fix set_fmt error handling - kernel/git/stable/linux.git - Linux kernel stable treePatch
-
https://git.kernel.org/stable/c/c6b81b897f6f9445d57f8d47c4e060ec21556137
media: staging/intel-ipu3: Fix set_fmt error handling - kernel/git/stable/linux.git - Linux kernel stable treePatch
-
https://git.kernel.org/stable/c/6fb617e37a39db0a3eca4489431359d0bdf3b9bc
media: staging/intel-ipu3: Fix set_fmt error handling - kernel/git/stable/linux.git - Linux kernel stable treePatch
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