Bug 2266341 (CVE-2023-52469) - CVE-2023-52469 kernel: use-after-free in kv_parse_power_table
Summary: CVE-2023-52469 kernel: use-after-free in kv_parse_power_table
Keywords:
Status: NEW
Alias: CVE-2023-52469
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 2266343
Blocks: 2266208
TreeView+ depends on / blocked
 
Reported: 2024-02-27 16:34 UTC by Rohit Keshri
Modified: 2024-03-17 17:17 UTC (History)
49 users (show)

Fixed In Version:
Doc Type: If docs needed, set a value
Doc Text:
A use-after-free flaw was found in kv_parse_power_table in drivers/amd/pm in the Linux kernel. When ps equals NULL, kv_parse_power_table frees adev->pm.dpm.ps. The adev->pm.dpm.ps is used in the loop of kv_dpm_fini after its first free in kv_parse_power_table, causing a use-after-free problem.
Clone Of:
Environment:
Last Closed:
Embargoed:

Attachments (Terms of Use)

Description Rohit Keshri 2024-02-27 16:34:09 UTC 
In the Linux kernel, the following vulnerability has been resolved:

drivers/amd/pm: fix a use-after-free in kv_parse_power_table

When ps allocated by kzalloc equals to NULL, kv_parse_power_table
frees adev->pm.dpm.ps that allocated before. However, after the control
flow goes through the following call chains:

kv_parse_power_table
  |-> kv_dpm_init
        |-> kv_dpm_sw_init
	      |-> kv_dpm_fini

The adev->pm.dpm.ps is used in the for loop of kv_dpm_fini after its
first free in kv_parse_power_table and causes a use-after-free bug.

https://git.kernel.org/stable/c/28dd788382c43b330480f57cd34cde0840896743
https://git.kernel.org/stable/c/3426f059eacc33ecc676b0d66539297e1cfafd02
https://git.kernel.org/stable/c/35fa2394d26e919f63600ce631e6aefc95ec2706
https://git.kernel.org/stable/c/520e213a0b97b64735a13950e9371e0a5d7a5dc3
https://git.kernel.org/stable/c/8a27d9d9fc9b5564b8904c3a77a7dea482bfa34e
https://git.kernel.org/stable/c/8b55b06e737feb2a645b0293ea27e38418876d63
https://git.kernel.org/stable/c/95084632a65d5c0d682a83b55935560bdcd2a1e3
https://git.kernel.org/stable/c/b6dcba02ee178282e0d28684d241e0b8462dea6a
Comment 1 Rohit Keshri 2024-02-27 16:44:04 UTC 
Created kernel tracking bugs for this issue:

Affects: fedora-all [bug 2266343]
Comment 4 Justin M. Forbes 2024-02-27 18:51:54 UTC 
This was fixed for Fedora with the 6.6.14 stable kernel update.
Note You need to log in before you can comment on or make changes to this bug.