CVE-2026-74498
CVE.org · Published
- Record status
- Published
- Identifier year (not publication year)
- 2026
- Source publication
- Source updated
- Imported by cveboard
- Source snapshot
- cve_2026-10-24_midnight_baseline ·
CNA source text (English)
ALSA: usb-audio: Fix DMA buffer out-of-bounds write when fill_max is set
In the Linux kernel, the following vulnerability has been resolved: ALSA: usb-audio: Fix DMA buffer out-of-bounds write when fill_max is set When a USB audio endpoint requests full packet transfers via the fill_max descriptor flag, data_ep_set_params() promotes ep->curpacksize to ep->maxpacksize. However, maxsize is left at the original sample-rate derived value. Since u->buffer_size is allocated as maxsize * packets, the resulting DMA buffer is far too small for the requested transfer length. When the USB host controller streams up to curpacksize bytes per packet, it writes past the end of the buffer via DMA, corrupting kernel heap memory. Update maxsize to curpacksize when fill_max is set so that the allocated DMA buffer size matches the actual transfer request size. [ changed to reassign maxsize only when ep->fill_max is set -- tiwai ]
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) |
|---|---|---|---|---|---|
| 8fdff6a319e7dac757c558bd283dc4577e68cde7 | affected | git | 10c24e6fddf4bdff0b6b05a47a4347b38e6960e8 | Unavailable | None listed |
| 8fdff6a319e7dac757c558bd283dc4577e68cde7 | affected | git | b1770f9ac35c0ffc34914d52347c65dcd5ac049b | Unavailable | None listed |
| 8fdff6a319e7dac757c558bd283dc4577e68cde7 | affected | git | 6cbdd11f9b05b92f4aa29f09a66e19ed0e25e66c | Unavailable | None listed |
| 8fdff6a319e7dac757c558bd283dc4577e68cde7 | affected | git | 3852974608f53e530e27c21d0c6c7d79c17b3f5a | Unavailable | None listed |
| 8fdff6a319e7dac757c558bd283dc4577e68cde7 | affected | git | f9b6c9576568169139ac151f7881474f384659fd | Unavailable | None listed |
| 8fdff6a319e7dac757c558bd283dc4577e68cde7 | affected | git | 04595233e5606d452f9f47e6989fc7ae7440fd40 | Unavailable | None listed |
| 8fdff6a319e7dac757c558bd283dc4577e68cde7 | affected | git | bd65b7191683bebd9923904f0558b9211b9129da | Unavailable | None listed |
| 8fdff6a319e7dac757c558bd283dc4577e68cde7 | affected | git | d0199ae1666ff9ae2d1d568d64c3430d4c47f0e5 | 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) |
|---|---|---|---|---|---|
| 3.5 | affected | Unavailable | Unavailable | Unavailable | None listed |
| 0 | unaffected | semver | 3.5 | Unavailable | None listed |
| 5.10.265 | unaffected | semver | Unavailable | 5.10.* | None listed |
| 5.15.216 | unaffected | semver | Unavailable | 5.15.* | None listed |
| 6.1.183 | unaffected | semver | Unavailable | 6.1.* | None listed |
| 6.6.151 | unaffected | semver | Unavailable | 6.6.* | None listed |
| 6.12.103 | unaffected | semver | Unavailable | 6.12.* | None listed |
| 6.18.44 | unaffected | semver | Unavailable | 6.18.* | None listed |
| 7.1.8 | unaffected | semver | Unavailable | 7.1.* | None listed |
| 7.2 | unaffected | original_commit_for_fix | Unavailable | * | None listed |