In the Linux kernel, the following vulnerability has been resolved:
ALSA: ump: Fix buffer overflow at UMP SysEx message conversion
The conversion function from MIDI 1.0 to UMP packet contains an
internal buffer to keep the incoming MIDI bytes, and its size is 4, as
it was supposed to be the max size for a MIDI1 UMP packet data.
However, the implementation overlooked that SysEx is handled in a
different format, and it can be up to 6 bytes, as found in
do_convert_to_ump(). It leads eventually to a buffer overflow, and
may corrupt the memory when a longer SysEx message is received.
The fix is simply to extend the buffer size to 6 to fit with the SysEx
UMP message.
References
Configurations
Configuration 1 (hide)
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History
17 Nov 2025, 19:21
| Type | Values Removed | Values Added |
|---|---|---|
| References | () https://git.kernel.org/stable/c/226beac5605afbb33f8782148d188b64396145a4 - Patch | |
| References | () https://git.kernel.org/stable/c/42ef48dd4ebb082a1a90b5c3feeda2e68a9e32fe - Patch | |
| References | () https://git.kernel.org/stable/c/56f1f30e6795b890463d9b20b11e576adf5a2f77 - Patch | |
| References | () https://git.kernel.org/stable/c/ce4f77bef276e7d2eb7ab03a5d08bcbaa40710ec - Patch | |
| CPE | cpe:2.3:o:linux:linux_kernel:6.15:rc1:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:6.15:rc3:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:6.15:rc4:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:6.15:rc2:*:*:*:*:*:* |
|
| CVSS |
v2 : v3 : |
v2 : unknown
v3 : 7.8 |
| First Time |
Linux linux Kernel
Linux |
|
| CWE | CWE-120 |
Information
Published : 2025-05-19 08:15
Updated : 2025-11-17 19:21
NVD link : CVE-2025-37891
Mitre link : CVE-2025-37891
CVE.ORG link : CVE-2025-37891
JSON object : View
Products Affected
linux
- linux_kernel
CWE
CWE-120
Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')