CVE-2025-37891
CVE.org · Published
- Record status
- Published
- Identifier year (not publication year)
- 2025
- Source publication
- Source updated
- Imported by cveboard
- Source snapshot
- cve_2026-10-24_midnight_baseline ·
CNA source text (English)
ALSA: ump: Fix buffer overflow at UMP SysEx message conversion
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.
Scoped product and version facts
Fix information unknown; no fixed version is derived here. Missing information does not prove that no fix exists.
Exploitation unknown; this catalogue does not assess exploitation.
Linux
- Vendor
- Linux
- Product
- Linux
- Platforms
- Unknown
- Default status
unaffected
| Version (version) | Status (status) | Version scheme (versionType) | Exclusive end (lessThan) | Inclusive end (lessThanOrEqual) | Status changes (at → status) |
|---|---|---|---|---|---|
| 0b5288f5fe63eab687c14e5940b9e0d532b129f2 | affected | git | ce4f77bef276e7d2eb7ab03a5d08bcbaa40710ec | Unavailable | None listed |
| 0b5288f5fe63eab687c14e5940b9e0d532b129f2 | affected | git | 226beac5605afbb33f8782148d188b64396145a4 | Unavailable | None listed |
| 0b5288f5fe63eab687c14e5940b9e0d532b129f2 | affected | git | 42ef48dd4ebb082a1a90b5c3feeda2e68a9e32fe | Unavailable | None listed |
| 0b5288f5fe63eab687c14e5940b9e0d532b129f2 | affected | git | 56f1f30e6795b890463d9b20b11e576adf5a2f77 | Unavailable | None listed |
Linux
- Vendor
- Linux
- Product
- Linux
- Platforms
- Unknown
- Default status
affected
| Version (version) | Status (status) | Version scheme (versionType) | Exclusive end (lessThan) | Inclusive end (lessThanOrEqual) | Status changes (at → status) |
|---|---|---|---|---|---|
| 6.5 | affected | Unavailable | Unavailable | Unavailable | None listed |
| 0 | unaffected | semver | 6.5 | Unavailable | None listed |
| 6.6.90 | unaffected | semver | Unavailable | 6.6.* | None listed |
| 6.12.28 | unaffected | semver | Unavailable | 6.12.* | None listed |
| 6.14.6 | unaffected | semver | Unavailable | 6.14.* | None listed |
| 6.15 | unaffected | original_commit_for_fix | Unavailable | * | None listed |