Linux vulnerability

What happened

In the Linux kernel, the following vulnerability has been resolved: ALSA: aloop: Check card index validity at probe aloop driver blindly trusts that the given devptr->id value is within the proper card index range at probe. 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 versions

Linux: 597603d615d2b19a9e451d8cfac24372856a522d through before c589aeaadfde1cfedb5c6f0a3c782807282126d9 (git); 597603d615d2b19a9e451d8cfac24372856a522d through before 7b3f9855849363e402bf2141df2b428581cbf31b (git); 597603d615d2b19a9e451d8cfac24372856a522d through before efbc2e9e43a1b5c6d75ae47439c06896bb142ae6 (git); 597603d615d2b19a9e451d8cfac24372856a522d through before 819b106a9fd2ef3fd8abf898b9a8e4524eca8f48 (git); 2.6.37 Fixed: See vendor advisory.

Why it matters

Review the vendor advisory and exposure of the affected product to determine operational impact.

Detection & mitigation

• Apply vendor-provided updates or mitigations.
• Review affected product exposure and access logs.