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.

Metrics

No CVSS v4.0

Attack Vector Local

Attack Complexity Low

Privileges Required Low

Scope Unchanged

Confidentiality Impact High

Integrity Impact High

Availability Impact High

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

Exploitation none

Automatable no

Technical Impact total

Affected Vendors & Products

Vendors Products
Linux
  • Linux Kernel

Configuration 1 [-]

OR cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*

No data.

References
Link Providers
https://git.kernel.org/stable/c/2615464854505188f909d0c07c37a6623693b5c7 cve-icon cve-icon
https://git.kernel.org/stable/c/43eb9b667b95f2a31c63e8949b0d2161b9be59c3 cve-icon cve-icon
https://git.kernel.org/stable/c/6c5bdaa1325be7f04b79ea992ab216739192d342 cve-icon cve-icon
https://git.kernel.org/stable/c/a5ce7051db044290b1a95045ff03c249005a3aa4 cve-icon cve-icon
https://git.kernel.org/stable/c/af832028af6f44c6c45645757079c4ed6884ade5 cve-icon cve-icon
https://git.kernel.org/stable/c/c0e811c4ccf3b42705976285e3a94cc82dea7300 cve-icon cve-icon
https://git.kernel.org/stable/c/ca1ce206894dd976275c78ee38dbc19873f22de9 cve-icon cve-icon
https://git.kernel.org/stable/c/f3fa2becf2fc25b6ac7cf8d8b1a2e4a86b3b72bd cve-icon cve-icon
https://git.kernel.org/stable/c/fd2eff8b9dcbe469c3b7bbbc7083ab5ed94de07b cve-icon cve-icon
https://lore.kernel.org/linux-cve-announce/2025022612-CVE-2022-49530-e721@gregkh/T cve-icon
https://nvd.nist.gov/vuln/detail/CVE-2022-49530 cve-icon
https://www.cve.org/CVERecord?id=CVE-2022-49530 cve-icon
History

Wed, 01 Oct 2025 20:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Mon, 17 Mar 2025 09:15:00 +0000

Type Values Removed Values Added
Metrics threat_severity

Moderate

 threat_severity

Important

Mon, 10 Mar 2025 22:00:00 +0000

Type Values Removed Values Added
First Time appeared Linux
Linux linux Kernel
Weaknesses CWE-415
CPEs cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
Vendors & Products Linux
Linux linux Kernel
Metrics cvssV3_1

{'score': 5.5, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H'}

 cvssV3_1

{'score': 7.8, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H'}

Thu, 27 Feb 2025 01:45:00 +0000

Type Values Removed Values Added
References
Metrics threat_severity

None

 cvssV3_1

{'score': 5.5, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H'}

threat_severity

Moderate

Wed, 26 Feb 2025 02:45:00 +0000

Type Values Removed Values Added
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.
Title drm/amd/pm: fix double free in si_parse_power_table()
References
cve-icon MITRE

Status: PUBLISHED

Assigner: Linux

Published: 2025-02-26T02:13:51.057Z

Updated: 2025-10-01T19:46:41.373Z

Reserved: 2025-02-26T02:08:31.588Z

Link: CVE-2022-49530

cve-icon Vulnrichment

Updated: 2025-10-01T16:49:29.703Z

cve-icon NVD

Status : Modified

Published: 2025-02-26T07:01:28.967

Modified: 2025-10-01T20:16:36.963

Link: CVE-2022-49530

cve-icon Redhat

Severity : Important

Publid Date: 2025-02-26T00:00:00Z

Links: CVE-2022-49530 - Bugzilla