UBUNTU-CVE-2023-52647
In the Linux kernel, the following vulnerability has been resolved: media: nxp: imx8-isi: Check whether crossbar pad is non-NULL before access When translating source to sink streams in the crossbar subdev, the driver tries to locate the remote subdev connected to the sink pad. The remote pad may be NULL, if userspace tries to enable a stream that ends at an unconnected crossbar sink. When that occurs, the driver dereferences the NULL pad, leading to a crash. Prevent the crash by checking if the pad is NULL before using it, and return an error if it is.
02 / AFFECTED SOFTWARE
Affected packages
6 explicit affected versions
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37 explicit affected versions
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33 explicit affected versions
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26 explicit affected versions
23 explicit affected versions
14 explicit affected versions
5 explicit affected versions
3 explicit affected versions
26 explicit affected versions
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6 explicit affected versions
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4 explicit affected versions
16 explicit affected versions
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12 explicit affected versions
4 explicit affected versions
13 explicit affected versions
5 explicit affected versions
7 explicit affected versions
13 explicit affected versions
7 explicit affected versions
10 explicit affected versions
14 explicit affected versions
18 explicit affected versions
3 explicit affected versions
16 explicit affected versions
1 explicit affected versions
43 explicit affected versions
11 explicit affected versions
35 explicit affected versions
12 explicit affected versions
13 explicit affected versions
6 explicit affected versions
12 explicit affected versions
50 explicit affected versions
11 explicit affected versions
12 explicit affected versions
27 explicit affected versions
12 explicit affected versions
7 explicit affected versions
03 / CONNECTIONS
Connected vulnerabilities
04 / EVIDENCE
Source records
In the Linux kernel, the following vulnerability has been resolved: media: nxp: imx8-isi: Check whether crossbar pad is non-NULL before access When translating source to sink streams in the crossbar subdev, the driver tries to locate the remote subdev connected to the sink pad. The remote pad may be NULL, if userspace tries to enable a stream that ends at an unconnected crossbar sink. When that occurs, the driver dereferences the NULL pad, leading to a crash. Prevent the crash by checking if the pad is NULL before using it, and return an error if it is.
05 / REFERENCES
Further evidence
- https://git.kernel.org/linus/eb2f932100288dbb881eadfed02e1459c6b9504c
- https://git.kernel.org/stable/c/91c8ce42fcde09f1da24acab9013b3e19cb88a4e
- https://git.kernel.org/stable/c/c4bd29bf5b7f67925bc1abd16069f22dadf5f061
- https://git.kernel.org/stable/c/c95318607fbe8fdd44991a8dad2e44118e6b8812
- https://git.kernel.org/stable/c/eb2f932100288dbb881eadfed02e1459c6b9504c
- https://ubuntu.com/security/CVE-2023-52647
- https://ubuntu.com/security/notices/USN-6816-1
- https://ubuntu.com/security/notices/USN-6817-1
- https://ubuntu.com/security/notices/USN-6817-2
- https://ubuntu.com/security/notices/USN-6817-3
- https://ubuntu.com/security/notices/USN-6878-1
- https://www.cve.org/CVERecord?id=CVE-2023-52647