CVE-2023-52439
Apache Linux Kernel Use-After-Free and Double Free
Description
In the Linux kernel, the following vulnerability has been resolved: uio: Fix use-after-free in uio_open core-1 core-2 ------------------------------------------------------- uio_unregister_device uio_open idev = idr_find() device_unregister(&idev->dev) put_device(&idev->dev) uio_device_release get_device(&idev->dev) kfree(idev) uio_free_minor(minor) uio_release put_device(&idev->dev) kfree(idev) ------------------------------------------------------- In the core-1 uio_unregister_device(), the device_unregister will kfree idev when the idev->dev kobject ref is 1. But after core-1 device_unregister, put_device and before doing kfree, the core-2 may get_device. Then: 1. After core-1 kfree idev, the core-2 will do use-after-free for idev. 2. When core-2 do uio_release and put_device, the idev will be double freed. To address this issue, we can get idev atomic & inc idev reference with minor_lock.
INFO
Published Date :
Feb. 20, 2024, 9:15 p.m.
Last Modified :
June 27, 2024, 12:15 p.m.
Source :
416baaa9-dc9f-4396-8d5f-8c081fb06d67
Remotely Exploitable :
No
Impact Score :
5.9
Exploitability Score :
1.8
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2023-52439.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2023-52439 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2023-52439 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
CVE Modified by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Jun. 27, 2024
Action Type Old Value New Value Added Reference kernel.org https://lists.debian.org/debian-lts-announce/2024/06/msg00020.html [No types assigned] -
CVE Modified by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Jun. 25, 2024
Action Type Old Value New Value Added Reference kernel.org https://lists.debian.org/debian-lts-announce/2024/06/msg00016.html [No types assigned] -
CVE Modified by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
May. 28, 2024
Action Type Old Value New Value -
CVE Modified by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
May. 14, 2024
Action Type Old Value New Value -
Initial Analysis by [email protected]
Mar. 15, 2024
Action Type Old Value New Value Added CVSS V3.1 NIST AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H Changed Reference Type https://git.kernel.org/stable/c/0c9ae0b8605078eafc3bea053cc78791e97ba2e2 No Types Assigned https://git.kernel.org/stable/c/0c9ae0b8605078eafc3bea053cc78791e97ba2e2 Patch Changed Reference Type https://git.kernel.org/stable/c/17a8519cb359c3b483fb5c7367efa9a8a508bdea No Types Assigned https://git.kernel.org/stable/c/17a8519cb359c3b483fb5c7367efa9a8a508bdea Patch Changed Reference Type https://git.kernel.org/stable/c/3174e0f7de1ba392dc191625da83df02d695b60c No Types Assigned https://git.kernel.org/stable/c/3174e0f7de1ba392dc191625da83df02d695b60c Patch Changed Reference Type https://git.kernel.org/stable/c/35f102607054faafe78d2a6994b18d5d9d6e92ad No Types Assigned https://git.kernel.org/stable/c/35f102607054faafe78d2a6994b18d5d9d6e92ad Patch Changed Reference Type https://git.kernel.org/stable/c/5cf604ee538ed0c467abe3b4cda5308a6398f0f7 No Types Assigned https://git.kernel.org/stable/c/5cf604ee538ed0c467abe3b4cda5308a6398f0f7 Patch Changed Reference Type https://git.kernel.org/stable/c/5e0be1229ae199ebb90b33102f74a0f22d152570 No Types Assigned https://git.kernel.org/stable/c/5e0be1229ae199ebb90b33102f74a0f22d152570 Patch Changed Reference Type https://git.kernel.org/stable/c/913205930da6213305616ac539447702eaa85e41 No Types Assigned https://git.kernel.org/stable/c/913205930da6213305616ac539447702eaa85e41 Patch Changed Reference Type https://git.kernel.org/stable/c/e93da893d52d82d57fc0db2ca566024e0f26ff50 No Types Assigned https://git.kernel.org/stable/c/e93da893d52d82d57fc0db2ca566024e0f26ff50 Patch Added CWE NIST CWE-415 Added CPE Configuration OR *cpe:2.3:o:linux:linux_kernel:4.18:-:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:4.18:rc5:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:4.18:rc6:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:4.18:rc7:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:4.18:rc8:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (excluding) 4.18.0 up to (excluding) 4.19.306 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 4.20.0 up to (excluding) 5.4.268 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.5.0 up to (excluding) 5.10.209 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.11.0 up to (excluding) 5.15.148 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.16.0 up to (excluding) 6.1.74 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 6.2.0 up to (excluding) 6.6.13 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 6.7.0 up to (excluding) 6.7.1 -
CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Feb. 20, 2024
Action Type Old Value New Value Added Description In the Linux kernel, the following vulnerability has been resolved: uio: Fix use-after-free in uio_open core-1 core-2 ------------------------------------------------------- uio_unregister_device uio_open idev = idr_find() device_unregister(&idev->dev) put_device(&idev->dev) uio_device_release get_device(&idev->dev) kfree(idev) uio_free_minor(minor) uio_release put_device(&idev->dev) kfree(idev) ------------------------------------------------------- In the core-1 uio_unregister_device(), the device_unregister will kfree idev when the idev->dev kobject ref is 1. But after core-1 device_unregister, put_device and before doing kfree, the core-2 may get_device. Then: 1. After core-1 kfree idev, the core-2 will do use-after-free for idev. 2. When core-2 do uio_release and put_device, the idev will be double freed. To address this issue, we can get idev atomic & inc idev reference with minor_lock. Added Reference Linux https://git.kernel.org/stable/c/3174e0f7de1ba392dc191625da83df02d695b60c [No types assigned] Added Reference Linux https://git.kernel.org/stable/c/e93da893d52d82d57fc0db2ca566024e0f26ff50 [No types assigned] Added Reference Linux https://git.kernel.org/stable/c/5e0be1229ae199ebb90b33102f74a0f22d152570 [No types assigned] Added Reference Linux https://git.kernel.org/stable/c/5cf604ee538ed0c467abe3b4cda5308a6398f0f7 [No types assigned] Added Reference Linux https://git.kernel.org/stable/c/17a8519cb359c3b483fb5c7367efa9a8a508bdea [No types assigned] Added Reference Linux https://git.kernel.org/stable/c/35f102607054faafe78d2a6994b18d5d9d6e92ad [No types assigned] Added Reference Linux https://git.kernel.org/stable/c/913205930da6213305616ac539447702eaa85e41 [No types assigned] Added Reference Linux https://git.kernel.org/stable/c/0c9ae0b8605078eafc3bea053cc78791e97ba2e2 [No types assigned]
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2023-52439 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2023-52439
weaknesses.