UBUNTU-CVE-2026-23094
In the Linux kernel, the following vulnerability has been resolved: uacce: fix isolate sysfs check condition uacce supports the device isolation feature. If the driver implements the isolate_err_threshold_read and isolate_err_threshold_write callback functions, uacce will create sysfs files now. Users can read and configure the isolation policy through sysfs. Currently, sysfs files are created as long as either isolate_err_threshold_read or isolate_err_threshold_write callback functions are present. However, accessing a non-existent callback function may cause the system to crash. Therefore, intercept the creation of sysfs if neither read nor write exists; create sysfs if either is supported, but intercept unsupported operations at the call site.
02 / AFFECTED SOFTWARE
Affected packages
11 explicit affected versions
50 explicit affected versions
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38 explicit affected versions
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10 explicit affected versions
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37 explicit affected versions
3 explicit affected versions
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38 explicit affected versions
38 explicit affected versions
8 explicit affected versions
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5 explicit affected versions
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26 explicit affected versions
35 explicit affected versions
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11 explicit affected versions
10 explicit affected versions
13 explicit affected versions
43 explicit affected versions
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3 explicit affected versions
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16 explicit affected versions
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12 explicit affected versions
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8 explicit affected versions
10 explicit affected versions
7 explicit affected versions
43 explicit affected versions
13 explicit affected versions
13 explicit affected versions
7 explicit affected versions
8 explicit affected versions
10 explicit affected versions
12 explicit affected versions
9 explicit affected versions
44 explicit affected versions
16 explicit affected versions
3 explicit affected versions
13 explicit affected versions
26 explicit affected versions
45 explicit affected versions
37 explicit affected versions
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14 explicit affected versions
38 explicit affected versions
9 explicit affected versions
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11 explicit affected versions
36 explicit affected versions
17 explicit affected versions
14 explicit affected versions
8 explicit affected versions
7 explicit affected versions
4 explicit affected versions
8 explicit affected versions
1 explicit affected versions
13 explicit affected versions
43 explicit affected versions
14 explicit affected versions
10 explicit affected versions
8 explicit affected versions
42 explicit affected versions
14 explicit affected versions
4 explicit affected versions
78 explicit affected versions
14 explicit affected versions
11 explicit affected versions
1 explicit affected versions
16 explicit affected versions
37 explicit affected versions
03 / CONNECTIONS
Connected vulnerabilities
04 / EVIDENCE
Source records
In the Linux kernel, the following vulnerability has been resolved: uacce: fix isolate sysfs check condition uacce supports the device isolation feature. If the driver implements the isolate_err_threshold_read and isolate_err_threshold_write callback functions, uacce will create sysfs files now. Users can read and configure the isolation policy through sysfs. Currently, sysfs files are created as long as either isolate_err_threshold_read or isolate_err_threshold_write callback functions are present. However, accessing a non-existent callback function may cause the system to crash. Therefore, intercept the creation of sysfs if neither read nor write exists; create sysfs if either is supported, but intercept unsupported operations at the call site.
05 / REFERENCES
Further evidence
- https://git.kernel.org/linus/98eec349259b1fd876f350b1c600403bcef8f85d
- https://git.kernel.org/stable/c/82821a681d5dcce31475a65190fc39ea8f372cc0
- https://git.kernel.org/stable/c/98eec349259b1fd876f350b1c600403bcef8f85d
- https://git.kernel.org/stable/c/9ab05cdcac354b1b1139918f49c6418b9005d042
- https://git.kernel.org/stable/c/fdbbb47d15ae17bf39fafec7e2028c1f8efba15e
- https://ubuntu.com/security/CVE-2026-23094
- https://ubuntu.com/security/notices/USN-8278-1
- https://ubuntu.com/security/notices/USN-8278-2
- https://ubuntu.com/security/notices/USN-8289-1
- https://ubuntu.com/security/notices/USN-8289-2
- https://ubuntu.com/security/notices/USN-8296-1
- https://ubuntu.com/security/notices/USN-8296-2
- https://ubuntu.com/security/notices/USN-8393-1
- https://ubuntu.com/security/notices/USN-8440-1
- https://ubuntu.com/security/notices/USN-8499-1
- https://ubuntu.com/security/notices/USN-8570-1
- https://ubuntu.com/security/notices/USN-8570-2
- https://ubuntu.com/security/notices/USN-8594-1
- https://ubuntu.com/security/notices/USN-8604-1
- https://ubuntu.com/security/notices/USN-8605-1
- https://www.cve.org/CVERecord?id=CVE-2026-23094