Vulnerability Description
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.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | >= 6.6, < 6.6.142 |
Related Weaknesses (CWE)
References
- https://git.kernel.org/stable/c/41a766c647294842c9b17672449f8e011048cba9Patch
- https://git.kernel.org/stable/c/c9f6768515818d71bdfc20119a81f3332c53b9c6Patch
- https://git.kernel.org/stable/c/ce836587e594af39ff048d9b29dee0f5f10692c9Patch
- https://git.kernel.org/stable/c/e4d3386b74fba8e01280484b67ee481ece00201ePatch
- https://git.kernel.org/stable/c/feff0251386aa6bb180a0a1cf7c1f91ba868113dPatch
FAQ
What is CVE-2026-64134?
CVE-2026-64134 is a vulnerability with a CVSS score of 7.8 (HIGH). 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 io...
How severe is CVE-2026-64134?
CVE-2026-64134 has been rated HIGH with a CVSS base score of 7.8/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-64134?
Check the references section above for vendor advisories and patch information. Affected products include: Linux Linux Kernel.