UBUNTU-CVE-2025-21998
In the Linux kernel, the following vulnerability has been resolved: firmware: qcom: uefisecapp: fix efivars registration race Since the conversion to using the TZ allocator, the efivars service is registered before the memory pool has been allocated, something which can lead to a NULL-pointer dereference in case of a racing EFI variable access. Make sure that all resources have been set up before registering the efivars.
02 / AFFECTED SOFTWARE
Affected packages
29 explicit affected versions
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37 explicit affected versions
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37 explicit affected versions
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12 explicit affected versions
5 explicit affected versions
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13 explicit affected versions
10 explicit affected versions
10 explicit affected versions
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1 explicit affected versions
10 explicit affected versions
10 explicit affected versions
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6 explicit affected versions
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12 explicit affected versions
26 explicit affected versions
1 explicit affected versions
11 explicit affected versions
23 explicit affected versions
14 explicit affected versions
5 explicit affected versions
3 explicit affected versions
26 explicit affected versions
12 explicit affected versions
44 explicit affected versions
4 explicit affected versions
4 explicit affected versions
7 explicit affected versions
16 explicit affected versions
9 explicit affected versions
12 explicit affected versions
13 explicit affected versions
5 explicit affected versions
6 explicit affected versions
5 explicit affected versions
13 explicit affected versions
7 explicit affected versions
6 explicit affected versions
10 explicit affected versions
14 explicit affected versions
18 explicit affected versions
3 explicit affected versions
16 explicit affected versions
43 explicit affected versions
35 explicit affected versions
12 explicit affected versions
13 explicit affected versions
6 explicit affected versions
12 explicit affected versions
15 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: firmware: qcom: uefisecapp: fix efivars registration race Since the conversion to using the TZ allocator, the efivars service is registered before the memory pool has been allocated, something which can lead to a NULL-pointer dereference in case of a racing EFI variable access. Make sure that all resources have been set up before registering the efivars.
05 / REFERENCES
Further evidence
- https://git.kernel.org/linus/da8d493a80993972c427002684d0742560f3be4a
- https://git.kernel.org/stable/c/c4e37b381a7a243c298a4858fc0a5a74e737c79a
- https://git.kernel.org/stable/c/da8d493a80993972c427002684d0742560f3be4a
- https://git.kernel.org/stable/c/f15a2b96a0e41c426c63a932d0e63cde7b9784aa
- https://ubuntu.com/security/CVE-2025-21998
- https://ubuntu.com/security/notices/USN-7605-1
- https://ubuntu.com/security/notices/USN-7605-2
- https://ubuntu.com/security/notices/USN-7606-1
- https://ubuntu.com/security/notices/USN-7628-1
- https://www.cve.org/CVERecord?id=CVE-2025-21998