UBUNTU-CVE-2025-38130
In the Linux kernel, the following vulnerability has been resolved: drm/connector: only call HDMI audio helper plugged cb if non-null On driver remove, sound/soc/codecs/hdmi-codec.c calls the plugged_cb with NULL as the callback function and codec_dev, as seen in its hdmi_remove function. The HDMI audio helper then happily tries calling said null function pointer, and produces an Oops as a result. Fix this by only executing the callback if fn is non-null. This means the .plugged_cb and .plugged_cb_dev members still get appropriately cleared.
02 / AFFECTED SOFTWARE
Affected packages
11 explicit affected versions
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12 explicit affected versions
10 explicit affected versions
26 explicit affected versions
5 explicit affected versions
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10 explicit affected versions
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13 explicit affected versions
13 explicit affected versions
7 explicit affected versions
10 explicit affected versions
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3 explicit affected versions
44 explicit affected versions
16 explicit affected versions
3 explicit affected versions
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26 explicit affected versions
45 explicit affected versions
37 explicit affected versions
14 explicit affected versions
38 explicit affected versions
9 explicit affected versions
11 explicit affected versions
7 explicit affected versions
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1 explicit affected versions
13 explicit affected versions
43 explicit affected versions
10 explicit affected versions
8 explicit affected versions
14 explicit affected versions
4 explicit affected versions
78 explicit affected versions
11 explicit affected versions
1 explicit affected versions
03 / CONNECTIONS
Connected vulnerabilities
04 / EVIDENCE
Source records
In the Linux kernel, the following vulnerability has been resolved: drm/connector: only call HDMI audio helper plugged cb if non-null On driver remove, sound/soc/codecs/hdmi-codec.c calls the plugged_cb with NULL as the callback function and codec_dev, as seen in its hdmi_remove function. The HDMI audio helper then happily tries calling said null function pointer, and produces an Oops as a result. Fix this by only executing the callback if fn is non-null. This means the .plugged_cb and .plugged_cb_dev members still get appropriately cleared.
05 / REFERENCES
Further evidence
- https://git.kernel.org/linus/be9b3f9a54101c19226c25ba7163d291183777a0
- https://git.kernel.org/stable/c/933f3eab1d489af8d734bff855b10d29dd5968a4
- https://git.kernel.org/stable/c/be9b3f9a54101c19226c25ba7163d291183777a0
- https://ubuntu.com/security/CVE-2025-38130
- https://ubuntu.com/security/notices/USN-7769-1
- https://ubuntu.com/security/notices/USN-7769-2
- https://ubuntu.com/security/notices/USN-7769-3
- https://ubuntu.com/security/notices/USN-7770-1
- https://ubuntu.com/security/notices/USN-7771-1
- https://ubuntu.com/security/notices/USN-7789-1
- https://ubuntu.com/security/notices/USN-7789-2
- https://www.cve.org/CVERecord?id=CVE-2025-38130