CVE-2022-48872
kernel: misc: fastrpc: Fix use-after-free race condition for maps
Severity
ModerateRed Hat Product Security
CVSS 3.1
Review impact separately from score.
Published · August 21, 2024
Updated · August 5, 2026
Description
A vulnerability was found in the Linux kernel's fastrpc.c driver caused by a race condition created when calling the function fastrpc_map_get() until map->fl->lock is taken in the fastrpc_free_map() function. During this call another thread could call the function fastrpc_map_lookup() and receive a reference to a map that is about to be deleted. This could lead to a use-after-free condition, potentially leading to memory corruption or system instability.
Statement
Red Hat Enterprise Linux is not impacted by this CVE, as the vulnerability in question does not affect the specific versions or configurations of the Linux kernel used in its distributions. This ensures that users of Red Hat Enterprise Linux are not exposed to the potential risks associated with this issue, and no further action or mitigation is necessary for systems running this operating system.
CVSS score applicability
The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.
Mitigation
No mitigation is specified in collected source.
CVSS / CWE
CVSS 3.1 · 7CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
CWE-416 · Use After Free