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CVE-2023-52445

UNKNOWN
Published 2024-02-22T16:21:37.784Z
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No CVSS data available

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.

Available Exploits

No exploits available for this CVE.

Related News

No news articles found for this CVE.

Affected Products

Linux

Linux

Affected Versions:

e5be15c63804e05b5a94197524023702a259e308 e5be15c63804e05b5a94197524023702a259e308 e5be15c63804e05b5a94197524023702a259e308 e5be15c63804e05b5a94197524023702a259e308 e5be15c63804e05b5a94197524023702a259e308 e5be15c63804e05b5a94197524023702a259e308 e5be15c63804e05b5a94197524023702a259e308 e5be15c63804e05b5a94197524023702a259e308
Linux

Linux

Affected Versions:

2.6.26 0 4.19.306 5.4.268 5.10.209 5.15.148 6.1.75 6.6.14 6.7.2 6.8

GitHub Security Advisories

Community-driven vulnerability intelligence from GitHub

⚠ Unreviewed HIGH

GHSA-84fp-h279-ggmw

Advisory Details

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.

CVSS Scoring

CVSS Score

7.5

CVSS Vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

References

ADVISORY https://nvd.nist.gov/vuln/detail/CVE-2023-52445
WEB https://git.kernel.org/stable/c/2cf0005d315549b8d2b940ff96a66c2a889aa795
WEB https://git.kernel.org/stable/c/30773ea47d41773f9611ffb4ebc9bda9d19a9e7e
WEB https://git.kernel.org/stable/c/3233d8bf7893550045682192cb227af7fa3defeb
WEB https://git.kernel.org/stable/c/437b5f57732bb4cc32cc9f8895d2010ee9ff521c
WEB https://git.kernel.org/stable/c/47aa8fcd5e8b5563af4042a00f25ba89bef8f33d
WEB https://git.kernel.org/stable/c/ded85b0c0edd8f45fec88783d7555a5b982449c1
WEB https://git.kernel.org/stable/c/ec3634ebe23fc3c44ebc67c6d25917300bc68c08
WEB https://git.kernel.org/stable/c/ec36c134dd020d28e312c2f1766f85525e747aab
WEB https://lists.debian.org/debian-lts-announce/2024/06/msg00016.html
WEB https://lists.debian.org/debian-lts-announce/2024/06/msg00020.html

Advisory provided by GitHub Security Advisory Database. Published: February 22, 2024, Modified: June 27, 2024

References

https://git.kernel.org/stable/c/ec36c134dd020d28e312c2f1766f85525e747aab
https://git.kernel.org/stable/c/47aa8fcd5e8b5563af4042a00f25ba89bef8f33d
https://git.kernel.org/stable/c/3233d8bf7893550045682192cb227af7fa3defeb
https://git.kernel.org/stable/c/ec3634ebe23fc3c44ebc67c6d25917300bc68c08
https://git.kernel.org/stable/c/30773ea47d41773f9611ffb4ebc9bda9d19a9e7e
https://git.kernel.org/stable/c/2cf0005d315549b8d2b940ff96a66c2a889aa795
https://git.kernel.org/stable/c/437b5f57732bb4cc32cc9f8895d2010ee9ff521c
https://git.kernel.org/stable/c/ded85b0c0edd8f45fec88783d7555a5b982449c1
Published: 2024-02-22T16:21:37.784Z
Last Modified: 2025-05-04T07:36:41.651Z
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