CVE-2026-74498
CVE CVE-2026-74498EUVD EUVD-2026-59691Published 2026-08-15T12:27:25.000ZLast changed 2026-08-19T16:37:57.000Z
What the advisory describes
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 ]
Source: EUVD (ENISA), in the words of the advisory.
Products the advisory names
These come from the advisory itself, not from any check we performed.
- Linux — Linux patch: 7.1.8; 8fdff6a319e7dac757c558bd283dc4577e68cde7 <6cbdd11f9b05b92f4aa29f09a66e19ed0e25e66c; 8fdff6a319e7dac757c558bd283dc4577e68cde7 <d0199ae1666ff9ae2d1d568d64c3430d4c47f0e5; 8fdff6a319e7dac757c558bd283dc4577e68cde7 <f9b6c9576568169139ac151f7881474f384659fd; 8fdff6a319e7dac757c558bd283dc4577e68cde7 <10c24e6fddf4bdff0b6b05a47a4347b38e6960e8; 8fdff6a319e7dac757c558bd283dc4577e68cde7 <3852974608f53e530e27c21d0c6c7d79c17b3f5a; patch: 6.1.183; 8fdff6a319e7dac757c558bd283dc4577e68cde7 <b1770f9ac35c0ffc34914d52347c65dcd5ac049b; patch: 6.18.44; patch: 6.12.103; patch: 5.10.265; patch: 5.15.216; patch: 7.2; patch: 6.6.151; 8fdff6a319e7dac757c558bd283dc4577e68cde7 <bd65b7191683bebd9923904f0558b9211b9129da; patch: 0; 3.5; 8fdff6a319e7dac757c558bd283dc4577e68cde7 <04595233e5606d452f9f47e6989fc7ae7440fd40
The versions shown are the advisory's own. Patchlage compares no version numbers and derives no judgement from them — which version is installed is something a person has to look up.
Carried in the product catalogue
An estate covering these products can be recorded in Patchlage. An advisory about them appears in the next morning's situation report.
- Linux — Linux
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