Description (CNA)
In the Linux kernel, the following vulnerability has been resolved: ALSA: usb-audio: Fix out of bounds reads when finding clock sources The current USB-audio driver code doesn't check bLength of each descriptor at traversing for clock descriptors. That is, when a device provides a bogus descriptor with a shorter bLength, the driver might hit out-of-bounds reads. For addressing it, this patch adds sanity checks to the validator functions for the clock descriptor traversal. When the descriptor length is shorter than expected, it's skipped in the loop. For the clock source and clock multiplier descriptors, we can just check bLength against the sizeof() of each descriptor type. OTOH, the clock selector descriptor of UAC2 and UAC3 has an array of bNrInPins elements and two more fields at its tail, hence those have to be checked in addition to the sizeof() check.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected b8e4f1fdfa422398c2d6c47bfb7d1feb3046d70a before a632bdcb359fd8145e86486ff8612da98e239acd; affected b8e4f1fdfa422398c2d6c47bfb7d1feb3046d70a before 45a92cbc88e4013bfed7fd2ccab3ade45f8e896b; affected b8e4f1fdfa422398c2d6c47bfb7d1feb3046d70a before ab011f7439d9bbfd34fd3b9cef4b2d6d952c9bb9; affected b8e4f1fdfa422398c2d6c47bfb7d1feb3046d70a before da13ade87a12dd58829278bc816a61bea06a56a9; affected b8e4f1fdfa422398c2d6c47bfb7d1feb3046d70a before 74cb86e1006c5437b1d90084d22018da30fddc77; affected b8e4f1fdfa422398c2d6c47bfb7d1feb3046d70a before ea0fa76f61cf8e932d1d26e6193513230816e11d; affected b8e4f1fdfa422398c2d6c47bfb7d1feb3046d70a before 096bb5b43edf755bc4477e64004fa3a20539ec2f; affected b8e4f1fdfa422398c2d6c47bfb7d1feb3046d70a before a3dd4d63eeb452cfb064a13862fb376ab108f6a6; affected 9feeaa50e5b4b0b71259d918a36ecf9059e60796; affected 3b17a13b687ae99939dc94a4ae01fbc34f68decc; affected 4.19.84 before 4.20; affected 5.3.11 before 5.4 |
| Linux / Linux | affected 5.4; unaffected 0 before 5.4; unaffected 5.4.287 through 5.4.*; unaffected 5.10.231 through 5.10.*; unaffected 5.15.174 through 5.15.*; unaffected 6.1.120 through 6.1.*; unaffected 6.6.64 through 6.6.*; unaffected 6.11.11 through 6.11.*; unaffected 6.12.2 through 6.12.*; unaffected 6.13 through * |
CWE
No CWE identifiers supplied.
References
- https://git.kernel.org/stable/c/a632bdcb359fd8145e86486ff8612da98e239acd
- https://git.kernel.org/stable/c/45a92cbc88e4013bfed7fd2ccab3ade45f8e896b
- https://git.kernel.org/stable/c/ab011f7439d9bbfd34fd3b9cef4b2d6d952c9bb9
- https://git.kernel.org/stable/c/da13ade87a12dd58829278bc816a61bea06a56a9
- https://git.kernel.org/stable/c/74cb86e1006c5437b1d90084d22018da30fddc77
- https://git.kernel.org/stable/c/ea0fa76f61cf8e932d1d26e6193513230816e11d
- https://git.kernel.org/stable/c/096bb5b43edf755bc4477e64004fa3a20539ec2f
- https://git.kernel.org/stable/c/a3dd4d63eeb452cfb064a13862fb376ab108f6a6
ADP enrichment
No English description supplied.
No English description supplied.