CVE-2022-50087
Vulnerability Summary
Timeline
Description
In the Linux kernel, the following vulnerability has been resolved: firmware: arm_scpi: Ensure scpi_info is not assigned if the probe fails When scpi probe fails, at any point, we need to ensure that the scpi_info is not set and will remain NULL until the probe succeeds. If it is not taken care, then it could result use-after-free as the value is exported via get_scpi_ops() and could refer to a memory allocated via devm_kzalloc() but freed when the probe fails.
CVSS Metrics
- v3.1•HIGH•Score: 7.8CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
EPSS Trends
Current EPSS score: 0.06%• Percentile: 20%
Techniques & Countermeasures
- CWE-416•Use After Free
The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.
Affected Systems
- linux•linux
≥ 8cb7cf56c9fe5412de238465b27ef35b4d2801aa, < 5aa558232edc30468d1f35108826dd5b3ffe978f | ≥ 8cb7cf56c9fe5412de238465b27ef35b4d2801aa, < 18048cba444a7c41dbf42c180d6b46606fc24c51 | ≥ 8cb7cf56c9fe5412de238465b27ef35b4d2801aa, < 08272646cd7c310642c39b7f54348fddd7987643 | ≥ 8cb7cf56c9fe5412de238465b27ef35b4d2801aa, < 0c29e149b6bb498778ed8a1c9597b51acfba7856 | ≥ 8cb7cf56c9fe5412de238465b27ef35b4d2801aa, < 87c4896d5dd7fd9927c814cf3c6289f41de3b562 | ≥ 8cb7cf56c9fe5412de238465b27ef35b4d2801aa, < 4f2d7b46d6b53c07f44a4f8f8f4438888f0e9e87 | ≥ 8cb7cf56c9fe5412de238465b27ef35b4d2801aa, < 689640efc0a2c4e07e6f88affe6d42cd40cc3f85 | 4.4
- linux•linux_kernel
≥ 4.4, < 4.19.256 | ≥ 4.20, < 5.4.211 | ≥ 5.5, < 5.10.137 | ≥ 5.11, < 5.15.61 | ≥ 5.16, < 5.18.18 | ≥ 5.19, < 5.19.2
References (7)
- https://git.kernel.org/stable/c/5aa558232edc30468d1f35108826dd5b3ffe978f
- https://git.kernel.org/stable/c/18048cba444a7c41dbf42c180d6b46606fc24c51
- https://git.kernel.org/stable/c/08272646cd7c310642c39b7f54348fddd7987643
- https://git.kernel.org/stable/c/0c29e149b6bb498778ed8a1c9597b51acfba7856
- https://git.kernel.org/stable/c/87c4896d5dd7fd9927c814cf3c6289f41de3b562
- https://git.kernel.org/stable/c/4f2d7b46d6b53c07f44a4f8f8f4438888f0e9e87
- https://git.kernel.org/stable/c/689640efc0a2c4e07e6f88affe6d42cd40cc3f85