CVE-2026-80812

Summary

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

ALSA: dummy: Check card index validity at probe

snd_dummy_probe() blindly trusts that the given devptr->id value is within the proper card index range. It's OK for the devices the driver itself creates at the module probe time, but if the device is bound manually via sysfs interface, this could be -1 as "none", and this leads to OOB access for index[] and other parameters.

Add a sanity check for the card index and warn/correct it if it's a value out of the range.

Affected Software

VendorProductVersion RangeStatus
LinuxLinux1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < b7579e86afcec932e169d10e2d603abed8dd2fdfaffected
LinuxLinux1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 4d0892a90b57f0e89b274c3f3c51c2fa17937c88affected
LinuxLinux1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < b20eb7ecbdaa3e649023fe41b177d90983ffb487affected
LinuxLinux1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < c9f10a001c243d1f069ebb0e2f4999ad4043a254affected
LinuxLinux1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < f20c2c32ec1c5c3526f29a03b487c55a5890996caffected
LinuxLinux1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 3dba0e92e18980cb5a4d70a9a263539ae4f0c7ecaffected
LinuxLinux1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 690b721b9595f9a43395fd4047a832c42b5b6078affected
LinuxLinux1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 02442d5fe8ee365a084b055d4fa81a0c1abfc3fdaffected
LinuxLinux0 < 5.15.218affected
LinuxLinux0 < 6.1.185affected
LinuxLinux0 < 6.6.154affected
LinuxLinux0 < 6.12.106affected
LinuxLinux0 < 6.18.47affected
LinuxLinux0 < 7.1.11affected
LinuxLinux0 < 7.2.1affected
LinuxLinux5.15.218 <= 5.15.*unaffected
LinuxLinux6.1.185 <= 6.1.*unaffected
LinuxLinux6.6.154 <= 6.6.*unaffected
LinuxLinux6.12.106 <= 6.12.*unaffected
LinuxLinux6.18.47 <= 6.18.*unaffected
LinuxLinux7.1.11 <= 7.1.*unaffected
LinuxLinux7.2.1 <= 7.2.*unaffected
LinuxLinux7.3-rc1 <= *unaffected

Weaknesses

References