CVSS 3.1
7.8 highCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HCVE-2021-47361
High (7.8) in linux linux kernel. EPSS 0.2% chance of exploitation in the next 30 days.
In the Linux kernel, the following vulnerability has been resolved:
mcb: fix error handling in mcb_alloc_bus()
There are two bugs:
1) If ida_simple_get() fails then this code calls put_device(carrier)
but we haven't yet called get_device(carrier) and probably that
leads to a use after free.
2) After device_initialize() then we need to use put_device() to
release the bus. This will free the internal resources tied to the
device and call mcb_free_bus() which will free the rest.
Severity
- EPSS
- 0.2% chance of exploitation in the next 30 days; higher than 15% of CVEs (scores of 2026-10-31)
- CWE
- CWE-416
- Published
- Modified
- Record from
- the NVD, synced
Affected
- linux:linux_kernel
References
- https://git.kernel.org/stable/c/115b07d9f47e3996430b8f2007edd9768e1f807f
- https://git.kernel.org/stable/c/25a1433216489de4abc889910f744e952cb6dbae
- https://git.kernel.org/stable/c/66f74ba9be9daf9c47fface6af3677f602774f6b
- https://git.kernel.org/stable/c/7751f609eadf36b1f53712bae430019c53a16eb0
- https://git.kernel.org/stable/c/8a558261fa57a6deefb0925ab1829f698b194aea