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CVE-2023-52498

Status Candidate

Overview

In the Linux kernel, the following vulnerability has been resolved: PM: sleep: Fix possible deadlocks in core system-wide PM code It is reported that in low-memory situations the system-wide resume core code deadlocks, because async_schedule_dev() executes its argument function synchronously if it cannot allocate memory (and not only in that case) and that function attempts to acquire a mutex that is already held. Executing the argument function synchronously from within dpm_async_fn() may also be problematic for ordering reasons (it may cause a consumer device's resume callback to be invoked before a requisite supplier device's one, for example). Address this by changing the code in question to use async_schedule_dev_nocall() for scheduling the asynchronous execution of device suspend and resume functions and to directly run them synchronously if async_schedule_dev_nocall() returns false.

Related Files

Ubuntu Security Notice USN-6795-1
Posted May 29, 2024
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 6795-1 - Zheng Wang discovered that the Broadcom FullMAC WLAN driver in the Linux kernel contained a race condition during device removal, leading to a use- after-free vulnerability. A physically proximate attacker could possibly use this to cause a denial of service. It was discovered that the Open vSwitch implementation in the Linux kernel could overflow its stack during recursive action operations under certain conditions. A local attacker could use this to cause a denial of service.

tags | advisory, denial of service, overflow, kernel, local
systems | linux, ubuntu
advisories | CVE-2022-0001, CVE-2023-47233, CVE-2023-52435, CVE-2023-52491, CVE-2023-52492, CVE-2023-52494, CVE-2023-52498, CVE-2023-52530, CVE-2023-52583, CVE-2023-52587, CVE-2023-52588, CVE-2023-52595, CVE-2023-52597, CVE-2023-52598
SHA-256 | 1263e2b9ac7045e640a955619fc9ec7e9ee0cee6811cce5ca858a631117df48d
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