vulnerability
Red Hat: CVE-2023-52445: kernel: pvrusb2: fix use after free on context disconnection (Multiple Advisories)
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 3 | (AV:L/AC:M/Au:M/C:N/I:P/A:P) | Feb 22, 2024 | Jun 6, 2024 | Mar 27, 2026 |
Severity
3
CVSS
(AV:L/AC:M/Au:M/C:N/I:P/A:P)
Published
Feb 22, 2024
Added
Jun 6, 2024
Modified
Mar 27, 2026
Description
In the Linux kernel, the following vulnerability has been resolved:
media: pvrusb2: fix use after free on context disconnection
Upon module load, a kthread is created targeting the
pvr2_context_thread_func function, which may call pvr2_context_destroy
and thus call kfree() on the context object. However, that might happen
before the usb hub_event handler is able to notify the driver. This
patch adds a sanity check before the invalid read reported by syzbot,
within the context disconnection call stack.
Solutions
redhat-upgrade-kernelredhat-upgrade-kernel-rt
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