CVE-2022-50484

Summary

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

ALSA: usb-audio: Fix potential memory leaks

When the driver hits -ENOMEM at allocating a URB or a buffer, it aborts and goes to the error path that releases the all previously allocated resources. However, when -ENOMEM hits at the middle of the sync EP URB allocation loop, the partially allocated URBs might be left without released, because ep->nurbs is still zero at that point.

Fix it by setting ep->nurbs at first, so that the error handler loops over the full URB list.

Affected Software

VendorProductVersion RangeStatus
LinuxLinux8fdff6a319e7dac757c558bd283dc4577e68cde7 < 0604e5e5537af099ea2f6dfd892afe5c92db8a80affected
LinuxLinux8fdff6a319e7dac757c558bd283dc4577e68cde7 < 28d8d267af5d73f91d7640cbdb4024703256e36caffected
LinuxLinux8fdff6a319e7dac757c558bd283dc4577e68cde7 < 46f0aed47673e275d682af60ed26dcc28add8eaeaffected
LinuxLinux8fdff6a319e7dac757c558bd283dc4577e68cde7 < 988ec0cd0a2643c25c1658f7c33de2e15a5a2e31affected
LinuxLinux8fdff6a319e7dac757c558bd283dc4577e68cde7 < bc1d16d282bca421c6fc31de4b8fd412010f01bdaffected
LinuxLinux8fdff6a319e7dac757c558bd283dc4577e68cde7 < 0672215994e2347a9b4f145e2bc1709b1e01cee3affected
LinuxLinux8fdff6a319e7dac757c558bd283dc4577e68cde7 < faa8c1ed77d0169955b9b3516b714cc5fb512f27affected
LinuxLinux8fdff6a319e7dac757c558bd283dc4577e68cde7 < e4442410f76d66b9f7e854010bce04853f665324affected
LinuxLinux8fdff6a319e7dac757c558bd283dc4577e68cde7 < 6382da0828995af87aa8b8bef28cc61aceb4aff3affected
LinuxLinux3.5affected
LinuxLinux0 < 3.5unaffected
LinuxLinux4.9.331 <= 4.9.*unaffected
LinuxLinux4.14.296 <= 4.14.*unaffected
LinuxLinux4.19.262 <= 4.19.*unaffected
LinuxLinux5.4.220 <= 5.4.*unaffected
LinuxLinux5.10.150 <= 5.10.*unaffected
LinuxLinux5.15.75 <= 5.15.*unaffected
LinuxLinux5.19.17 <= 5.19.*unaffected
LinuxLinux6.0.3 <= 6.0.*unaffected
LinuxLinux6.1 <= *unaffected

Weaknesses

References