In the Linux kernel, the following vulnerability has been resolved:

ALSA: seq: oss: Fix races at processing SysEx messages

OSS sequencer handles the SysEx messages split in 6 bytes packets, and
ALSA sequencer OSS layer tries to combine those. It stores the data
in the internal buffer and this access is racy as of now, which may
lead to the out-of-bounds access.

As a temporary band-aid fix, introduce a mutex for serializing the
process of the SysEx message packets.
Advisories
Source ID Title
Debian DLA Debian DLA DLA-4076-1 linux-6.1 security update
EUVD EUVD EUVD-2024-53796 In the Linux kernel, the following vulnerability has been resolved: ALSA: seq: oss: Fix races at processing SysEx messages OSS sequencer handles the SysEx messages split in 6 bytes packets, and ALSA sequencer OSS layer tries to combine those. It stores the data in the internal buffer and this access is racy as of now, which may lead to the out-of-bounds access. As a temporary band-aid fix, introduce a mutex for serializing the process of the SysEx message packets.
Ubuntu USN Ubuntu USN USN-7379-1 Linux kernel vulnerabilities
Ubuntu USN Ubuntu USN USN-7379-2 Linux kernel (Raspberry Pi) vulnerabilities
Ubuntu USN Ubuntu USN USN-7380-1 Linux kernel (Low Latency) vulnerabilities
Ubuntu USN Ubuntu USN USN-7381-1 Linux kernel (Low Latency) vulnerabilities
Ubuntu USN Ubuntu USN USN-7382-1 Linux kernel (OEM) vulnerabilities
Ubuntu USN Ubuntu USN USN-7513-1 Linux kernel vulnerabilities
Ubuntu USN Ubuntu USN USN-7513-2 Linux kernel (Real-time) vulnerabilities
Ubuntu USN Ubuntu USN USN-7513-3 Linux kernel vulnerabilities
Ubuntu USN Ubuntu USN USN-7513-4 Linux kernel (HWE) vulnerabilities
Ubuntu USN Ubuntu USN USN-7513-5 Linux kernel (Oracle) vulnerabilities
Ubuntu USN Ubuntu USN USN-7514-1 Linux kernel (NVIDIA) vulnerabilities
Ubuntu USN Ubuntu USN USN-7515-1 Linux kernel (GKE) vulnerabilities
Ubuntu USN Ubuntu USN USN-7515-2 Linux kernel vulnerabilities
Ubuntu USN Ubuntu USN USN-7522-1 Linux kernel (Azure, N-Series) vulnerabilities
Ubuntu USN Ubuntu USN USN-7523-1 Linux kernel (Raspberry Pi Real-time) vulnerabilities
Ubuntu USN Ubuntu USN USN-7524-1 Linux kernel (Raspberry Pi) vulnerabilities
Fixes

Solution

No solution given by the vendor.


Workaround

No workaround given by the vendor.

History

Mon, 03 Nov 2025 21:30:00 +0000

Type Values Removed Values Added
References

Fri, 26 Sep 2025 20:15:00 +0000

Type Values Removed Values Added
Weaknesses CWE-362
CPEs cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.13:rc1:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.13:rc2:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.13:rc3:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.13:rc4:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.13:rc5:*:*:*:*:*:*
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': 6.3, 'vector': 'CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:H'}


Thu, 16 Jan 2025 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


Wed, 15 Jan 2025 13:15:00 +0000

Type Values Removed Values Added
Description In the Linux kernel, the following vulnerability has been resolved: ALSA: seq: oss: Fix races at processing SysEx messages OSS sequencer handles the SysEx messages split in 6 bytes packets, and ALSA sequencer OSS layer tries to combine those. It stores the data in the internal buffer and this access is racy as of now, which may lead to the out-of-bounds access. As a temporary band-aid fix, introduce a mutex for serializing the process of the SysEx message packets.
Title ALSA: seq: oss: Fix races at processing SysEx messages
References

cve-icon MITRE

Status: PUBLISHED

Assigner: Linux

Published:

Updated: 2025-11-03T20:55:07.270Z

Reserved: 2025-01-11T14:45:42.028Z

Link: CVE-2024-57893

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Modified

Published: 2025-01-15T13:15:13.820

Modified: 2025-11-03T21:18:38.890

Link: CVE-2024-57893

cve-icon Redhat

Severity : Moderate

Publid Date: 2025-01-15T00:00:00Z

Links: CVE-2024-57893 - Bugzilla

cve-icon OpenCVE Enrichment

Updated: 2025-07-13T11:30:58Z