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…
Does this matter?
Lower severity and a low EPSS score (0.16%). Track it; it rarely justifies an emergency change on its own.
Description
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.
- CVSS 3.1
- 5.5 MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 0.16% probability · 5th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-401
- Affected
- linux/linux kernel
- Source
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67
References
- https://git.kernel.org/stable/c/0604e5e5537af099ea2f6dfd892afe5c92db8a80Patch
- https://git.kernel.org/stable/c/0672215994e2347a9b4f145e2bc1709b1e01cee3Patch
- https://git.kernel.org/stable/c/28d8d267af5d73f91d7640cbdb4024703256e36cPatch
- https://git.kernel.org/stable/c/46f0aed47673e275d682af60ed26dcc28add8eaePatch
- https://git.kernel.org/stable/c/6382da0828995af87aa8b8bef28cc61aceb4aff3Patch
- https://git.kernel.org/stable/c/988ec0cd0a2643c25c1658f7c33de2e15a5a2e31Patch
- https://git.kernel.org/stable/c/bc1d16d282bca421c6fc31de4b8fd412010f01bdPatch
- https://git.kernel.org/stable/c/e4442410f76d66b9f7e854010bce04853f665324Patch
- https://git.kernel.org/stable/c/faa8c1ed77d0169955b9b3516b714cc5fb512f27Patch
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.