CVE-2026-64134: Linux, грешка в паметта

Описание

Оригинално описание

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.

Засегнати продукти

• Linux Linux: cf393babb37a1679a1ec1d864df1090353465e23 преди 41a766c647294842c9b17672449f8e011048cba9; cf393babb37a1679a1ec1d864df1090353465e23 преди ce836587e594af39ff048d9b29dee0f5f10692c9; cf393babb37a1679a1ec1d864df1090353465e23 преди feff0251386aa6bb180a0a1cf7c1f91ba868113d; cf393babb37a1679a1ec1d864df1090353465e23 преди c9f6768515818d71bdfc20119a81f3332c53b9c6; cf393babb37a1679a1ec1d864df1090353465e23 преди e4d3386b74fba8e01280484b67ee481ece00201e
• Linux Linux: 6.6; преди 6.6; 6.6.142 до 6.6.*; 6.12.92 до 6.12.*; 6.18.34 до 6.18.*; 7.0.11 до 7.0.*; от 7.1 нататък

Вид слабост

• CWE-476 Разименуване на NULL указател

История

Други уязвимости в Linux Linux

• 8.1CVE-2026-99270
• 7.8CVE-2026-99269
• CVE-2026-99268
• CVE-2026-99266
• CVE-2026-99267

Първоизточници

• https://www.cve.org/CVERecord?id=CVE-2026-64134
• https://nvd.nist.gov/vuln/detail/CVE-2026-64134
• https://git.kernel.org/stable/c/41a766c647294842c9b17672449f8e011048cba9
• https://git.kernel.org/stable/c/ce836587e594af39ff048d9b29dee0f5f10692c9
• https://git.kernel.org/stable/c/feff0251386aa6bb180a0a1cf7c1f91ba868113d
• https://git.kernel.org/stable/c/c9f6768515818d71bdfc20119a81f3332c53b9c6
• https://git.kernel.org/stable/c/e4d3386b74fba8e01280484b67ee481ece00201e