CVE-2026-64134High· 7.8▾ TwilightIn 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.…
▾ Twilight zone — High severity, or a signal on a lesser flaw
impact 42.9 · likelihood 0 · exploitation 0
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Stakeholder-Specific Vulnerability Categorization from CISA's ADP record at CVE.org: whether exploitation is observed, whether an attack can be automated, and how much of the system is at stake. The CVSS score shown above comes from the assigning CNA record, not NVD.
Exploit-prediction probability, daily snapshots since Oct 16.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via CVEORG
0.1%
Last analysed / modified upstream
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.
Linux >= cf393babb37a1679a1ec1d864df1090353465e23 < 41a766c647294842c9b17672449f8e011048cba9Linux >= cf393babb37a1679a1ec1d864df1090353465e23 < ce836587e594af39ff048d9b29dee0f5f10692c9Linux >= cf393babb37a1679a1ec1d864df1090353465e23 < feff0251386aa6bb180a0a1cf7c1f91ba868113dLinux >= cf393babb37a1679a1ec1d864df1090353465e23 < c9f6768515818d71bdfc20119a81f3332c53b9c6Linux >= cf393babb37a1679a1ec1d864df1090353465e23 < e4d3386b74fba8e01280484b67ee481ece00201eLinux 6.6Refer to the linked advisories for vendor-supplied fixes and affected version ranges.
Connected by shared product, vendor, weakness, or advisory.
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