CVE - CVE-2022-49530

CVE-ID
CVE-2022-49530	Learn more at National Vulnerability Database (NVD) • CVSS Severity Rating • Fix Information • Vulnerable Software Versions • SCAP Mappings • CPE Information
Description
In the Linux kernel, the following vulnerability has been resolved: drm/amd/pm: fix double free in si_parse_power_table() In function si_parse_power_table(), array adev->pm.dpm.ps and its member is allocated. If the allocation of each member fails, the array itself is freed and returned with an error code. However, the array is later freed again in si_dpm_fini() function which is called when the function returns an error. This leads to potential double free of the array adev->pm.dpm.ps, as well as leak of its array members, since the members are not freed in the allocation function and the array is not nulled when freed. In addition adev->pm.dpm.num_ps, which keeps track of the allocated array member, is not updated until the member allocation is successfully finished, this could also lead to either use after free, or uninitialized variable access in si_dpm_fini(). Fix this by postponing the free of the array until si_dpm_fini() and increment adev->pm.dpm.num_ps everytime the array member is allocated.
References
Note: References are provided for the convenience of the reader to help distinguish between vulnerabilities. The list is not intended to be complete.
MISC:https://git.kernel.org/stable/c/2615464854505188f909d0c07c37a6623693b5c7 URL:https://git.kernel.org/stable/c/2615464854505188f909d0c07c37a6623693b5c7 MISC:https://git.kernel.org/stable/c/43eb9b667b95f2a31c63e8949b0d2161b9be59c3 URL:https://git.kernel.org/stable/c/43eb9b667b95f2a31c63e8949b0d2161b9be59c3 MISC:https://git.kernel.org/stable/c/6c5bdaa1325be7f04b79ea992ab216739192d342 URL:https://git.kernel.org/stable/c/6c5bdaa1325be7f04b79ea992ab216739192d342 MISC:https://git.kernel.org/stable/c/a5ce7051db044290b1a95045ff03c249005a3aa4 URL:https://git.kernel.org/stable/c/a5ce7051db044290b1a95045ff03c249005a3aa4 MISC:https://git.kernel.org/stable/c/af832028af6f44c6c45645757079c4ed6884ade5 URL:https://git.kernel.org/stable/c/af832028af6f44c6c45645757079c4ed6884ade5 MISC:https://git.kernel.org/stable/c/c0e811c4ccf3b42705976285e3a94cc82dea7300 URL:https://git.kernel.org/stable/c/c0e811c4ccf3b42705976285e3a94cc82dea7300 MISC:https://git.kernel.org/stable/c/ca1ce206894dd976275c78ee38dbc19873f22de9 URL:https://git.kernel.org/stable/c/ca1ce206894dd976275c78ee38dbc19873f22de9 MISC:https://git.kernel.org/stable/c/f3fa2becf2fc25b6ac7cf8d8b1a2e4a86b3b72bd URL:https://git.kernel.org/stable/c/f3fa2becf2fc25b6ac7cf8d8b1a2e4a86b3b72bd MISC:https://git.kernel.org/stable/c/fd2eff8b9dcbe469c3b7bbbc7083ab5ed94de07b URL:https://git.kernel.org/stable/c/fd2eff8b9dcbe469c3b7bbbc7083ab5ed94de07b
Assigning CNA
kernel.org
Date Record Created
20250226	Disclaimer: The record creation date may reflect when the CVE ID was allocated or reserved, and does not necessarily indicate when this vulnerability was discovered, shared with the affected vendor, publicly disclosed, or updated in CVE.
Phase (Legacy)
Assigned (20250226)
Votes (Legacy)

Comments (Legacy)

Proposed (Legacy)
N/A
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