CVE-2025-71115
N/A
N/A
Summary
In the Linux kernel, the following vulnerability has been resolved:
um: init cpu_tasks[] earlier
This is currently done in uml_finishsetup(), but e.g. with KCOV enabled we'll crash because some init code can call into e.g. memparse(), which has coverage annotations, and then the checks in check_kcov_mode() crash because current is NULL.
Simply initialize the cpu_tasks[] array statically, which fixes the crash. For the later SMP work, it seems to have not really caused any problems yet, but initialize all of the entries anyway.
Affected Software
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Linux | Linux | 2f681ba4b352cdd5658ed2a96062375a12839755 < dbbf6d47130674640cd12a0781a0fb2a575d0e44 | affected |
| Linux | Linux | 2f681ba4b352cdd5658ed2a96062375a12839755 < 7b5d4416964c07c902163822a30a622111172b01 | affected |
| Linux | Linux | 6.13 | affected |
| Linux | Linux | 0 < 6.13 | unaffected |
| Linux | Linux | 6.18.3 <= 6.18.* | unaffected |
| Linux | Linux | 6.19 <= * | unaffected |
Weaknesses
References
- https://git.kernel.org/stable/c/dbbf6d47130674640cd12a0781a0fb2a575d0e44
- https://git.kernel.org/stable/c/7b5d4416964c07c902163822a30a622111172b01
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