CVE-2026-64221

Summary

In the Linux kernel, the following vulnerability has been resolved:

spi: ti-qspi: fix use-after-free after DMA setup failure

The driver falls back to PIO mode if DMA setup fails during probe.

Make sure to clear the DMA channel pointer also if buffer allocation fails to avoid passing a pointer to the released channel to the DMA engine (or trying to free the channel a second time on late probe errors or driver unbind).

This issue was flagged by Sashiko when reviewing a devres allocation conversion patch.

Affected Software

VendorProductVersion RangeStatus
LinuxLinuxc687c46e9e4527c4b4d82bc3cca58c1b08bcfb83 < 9c6f306a8140962c7284197db54b96fdb5f468d6affected
LinuxLinuxc687c46e9e4527c4b4d82bc3cca58c1b08bcfb83 < 3bbbe7ae3fdada0df4157c1ffe989f92dfa8dcd6affected
LinuxLinuxc687c46e9e4527c4b4d82bc3cca58c1b08bcfb83 < d6f422b122922d1abee907d673bcc990e5f3672daffected
LinuxLinuxc687c46e9e4527c4b4d82bc3cca58c1b08bcfb83 < f2dc841d7dc9063fe9b47ced869b1271e55052aeaffected
LinuxLinuxc687c46e9e4527c4b4d82bc3cca58c1b08bcfb83 < 1cd927002120678bd5d23c760246639caa53040eaffected
LinuxLinuxc687c46e9e4527c4b4d82bc3cca58c1b08bcfb83 < d7a076fb596c7b408ed6df74793a597990a6d860affected
LinuxLinuxc687c46e9e4527c4b4d82bc3cca58c1b08bcfb83 < 178b9b570c0f75fa7e691490520328b20d19138eaffected
LinuxLinuxc687c46e9e4527c4b4d82bc3cca58c1b08bcfb83 < ea6ec3343e05f7937a53eb6d7617b3abdb4abc19affected
LinuxLinux4.12affected
LinuxLinux0 < 4.12unaffected
LinuxLinux5.10.258 <= 5.10.*unaffected
LinuxLinux5.15.209 <= 5.15.*unaffected
LinuxLinux6.1.175 <= 6.1.*unaffected
LinuxLinux6.6.142 <= 6.6.*unaffected
LinuxLinux6.12.92 <= 6.12.*unaffected
LinuxLinux6.18.34 <= 6.18.*unaffected
LinuxLinux7.0.11 <= 7.0.*unaffected
LinuxLinux7.1 <= *unaffected

Weaknesses

References