PT-2023-9450 · Linux+4 · Linux Kernel+4
Ola Jeppsson
·
Published
2023-01-20
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Updated
2025-09-29
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CVE-2022-48872
CVSS v3.1
7.0
High
| Vector | AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H |
Name of the Vulnerable Software and Affected Versions
Linux kernel (affected versions not specified)
Description
The issue is related to a use-after-free race condition in the fastrpc component of the Linux kernel. This condition can occur when one thread calls
fastrpc map get() and another thread calls fastrpc map lookup() before the lock is taken in fastrpc free map(), potentially allowing access to a map that is about to be deleted. The vulnerability can be exploited to impact the confidentiality, integrity, and availability of protected information. Technical details include the involvement of functions such as fastrpc map get(), fastrpc map lookup(), and fastrpc free map(), with a warning for refcount t: addition on 0; use-after-free and a call trace indicating the sequence of events leading to the issue.Recommendations
At the moment, there is no information about a newer version that contains a fix for this vulnerability.
Exploit
Use After Free
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Weakness Enumeration
Related Identifiers
Affected Products
Alt Linux
Astra Linux
Linux Kernel
Red Os
Suse