In the Linux kernel, the following vulnerability has been resolved: ALSA: us122l: Use snd_card_free_when_closed() at disconnection The USB disconnect callback is supposed to be short and not too-long waiting. OTOH, the current code uses snd_card_free() at disconnection, but this waits for the close of all used fds, hence it can take long. It eventually blocks the upper layer USB ioctls, which may trigger a soft lockup. An easy workaround is to replace snd_card_free() with snd_card_free_when_closed(). This variant returns immediately while the release of resources is done asynchronously by the card device release at the last close. The loop of us122l->mmap_count check is dropped as well. The check is useless for the asynchronous operation with *_when_closed().

Metrics

No CVSS v4.0

Attack Vector Local

Attack Complexity Low

Privileges Required Low

Scope Unchanged

Confidentiality Impact None

Integrity Impact None

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 partial

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/020cbc4d7414f0962004213e2b7bc5cc607e9ec7 cve-icon cve-icon
https://git.kernel.org/stable/c/2938dd2648522336133c151dd67bb9bf01cbd390 cve-icon cve-icon
https://git.kernel.org/stable/c/75f418b249d84021865eaa59515d3ed9b75ce4d6 cve-icon cve-icon
https://git.kernel.org/stable/c/9a48bd2184b142c92a4e17eac074c61fcf975bc9 cve-icon cve-icon
https://git.kernel.org/stable/c/9b27924dc8d7f8a8c35e521287d4ccb9a006e597 cve-icon cve-icon
https://git.kernel.org/stable/c/9d5c530e4d70f64b1114f2cc29ac690ba7ac4a38 cve-icon cve-icon
https://git.kernel.org/stable/c/b7df09bb348016943f56b09dcaafe221e3f73947 cve-icon cve-icon
https://git.kernel.org/stable/c/bc778ad3e495333eebda36fe91d5b2c93109cc16 cve-icon cve-icon
https://git.kernel.org/stable/c/bf0aa35a7cb8602cccf2387712114e836f65c154 cve-icon cve-icon
https://lore.kernel.org/linux-cve-announce/2024122724-CVE-2024-56532-6931@gregkh/T cve-icon
https://nvd.nist.gov/vuln/detail/CVE-2024-56532 cve-icon
https://www.cve.org/CVERecord?id=CVE-2024-56532 cve-icon
History

Wed, 01 Oct 2025 21:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

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

Fri, 19 Sep 2025 16:30:00 +0000

Type Values Removed Values Added
Weaknesses CWE-667
CPEs cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
Metrics cvssV3_1

{'score': 4.4, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H'}

 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'}

Tue, 04 Mar 2025 15:00:00 +0000

Type Values Removed Values Added
Weaknesses CWE-459
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'}

threat_severity

Moderate

 cvssV3_1

{'score': 4.4, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H'}

threat_severity

Low

Mon, 30 Dec 2024 01:30:00 +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

Fri, 27 Dec 2024 14:15:00 +0000

Type Values Removed Values Added
Description In the Linux kernel, the following vulnerability has been resolved: ALSA: us122l: Use snd_card_free_when_closed() at disconnection The USB disconnect callback is supposed to be short and not too-long waiting. OTOH, the current code uses snd_card_free() at disconnection, but this waits for the close of all used fds, hence it can take long. It eventually blocks the upper layer USB ioctls, which may trigger a soft lockup. An easy workaround is to replace snd_card_free() with snd_card_free_when_closed(). This variant returns immediately while the release of resources is done asynchronously by the card device release at the last close. The loop of us122l->mmap_count check is dropped as well. The check is useless for the asynchronous operation with *_when_closed().
Title ALSA: us122l: Use snd_card_free_when_closed() at disconnection
References
cve-icon MITRE

Status: PUBLISHED

Assigner: Linux

Published: 2024-12-27T14:11:15.266Z

Updated: 2025-10-01T20:07:17.590Z

Reserved: 2024-12-27T14:03:05.984Z

Link: CVE-2024-56532

cve-icon Vulnrichment

Updated: 2025-10-01T15:40:14.239Z

cve-icon NVD

Status : Modified

Published: 2024-12-27T14:15:32.640

Modified: 2025-10-01T20:17:25.380

Link: CVE-2024-56532

cve-icon Redhat

Severity : Low

Publid Date: 2024-12-27T00:00:00Z

Links: CVE-2024-56532 - Bugzilla