CVE-2022-50484
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.
| Software | From | Fixed in |
|---|---|---|
| linux / linux_kernel | 3.5 | 4.9.331 |
| linux / linux_kernel | 4.10 | 4.14.296 |
| linux / linux_kernel | 4.15 | 4.19.262 |
| linux / linux_kernel | 4.20 | 5.4.220 |
| linux / linux_kernel | 5.5 | 5.10.150 |
| linux / linux_kernel | 5.11 | 5.15.75 |
| linux / linux_kernel | 5.16 | 5.19.17 |
| linux / linux_kernel | 6.0 | 6.0.3 |
- https://git.kernel.org/stable/c/0604e5e5537af099ea2f6dfd892afe5c92db8a80
- https://git.kernel.org/stable/c/0672215994e2347a9b4f145e2bc1709b1e01cee3
- https://git.kernel.org/stable/c/28d8d267af5d73f91d7640cbdb4024703256e36c
- https://git.kernel.org/stable/c/46f0aed47673e275d682af60ed26dcc28add8eae
- https://git.kernel.org/stable/c/6382da0828995af87aa8b8bef28cc61aceb4aff3
- https://git.kernel.org/stable/c/988ec0cd0a2643c25c1658f7c33de2e15a5a2e31
- https://git.kernel.org/stable/c/bc1d16d282bca421c6fc31de4b8fd412010f01bd
- https://git.kernel.org/stable/c/e4442410f76d66b9f7e854010bce04853f665324
- https://git.kernel.org/stable/c/faa8c1ed77d0169955b9b3516b714cc5fb512f27
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