CVE-2026-64134
In the Linux kernel, the following vulnerability has been resolved: ALSA: pcm: Don't setup bogus iov_iter for silencing At transition to the iov_iter for PCM d…
Impact
In the Linux kernel, the following vulnerability has been resolved: ALSA: pcm: Don't setup bogus iov_iter for silencing At transition to the iov_iter for PCM data transfer, we blindly applied the iov_iter setup also for silencing (i.e. data = NULL), and it leads to a calculation of bogus iov_iter. Fortunately this didn't cause troubles on most of architectures but it goes wrong on RISC-V now, causing a NULL dereference. Handle the NULL data case to treat the silencing in interleaved_copy() for addressing the bug above. noninterleaved_copy() has already the NULL data handling, so it doesn't need changes.
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Linux | Linux Kernel | from 6.6 before 6.6.142 from 6.7 before 6.12.92 from 6.13 before 6.18.34 from 6.19 before 7.0.11 Version 7.1 |
Weakness classification
References
- NVD record
- CVE.org record
- https://git.kernel.org/stable/c/41a766c647294842c9b17672449f8e011048cba9
- https://git.kernel.org/stable/c/c9f6768515818d71bdfc20119a81f3332c53b9c6
- https://git.kernel.org/stable/c/ce836587e594af39ff048d9b29dee0f5f10692c9
- https://git.kernel.org/stable/c/e4d3386b74fba8e01280484b67ee481ece00201e
- https://git.kernel.org/stable/c/feff0251386aa6bb180a0a1cf7c1f91ba868113d