Description (CNA)
In the Linux kernel, the following vulnerability has been resolved: ALSA: usb-audio: Fix potential overflow of PCM transfer buffer The PCM stream data in USB-audio driver is transferred over USB URB packet buffers, and each packet size is determined dynamically. The packet sizes are limited by some factors such as wMaxPacketSize USB descriptor. OTOH, in the current code, the actually used packet sizes are determined only by the rate and the PPS, which may be bigger than the size limit above. This results in a buffer overflow, as reported by syzbot. Basically when the limit is smaller than the calculated packet size, it implies that something is wrong, most likely a weird USB descriptor. So the best option would be just to return an error at the parameter setup time before doing any further operations. This patch introduces such a sanity check, and returns -EINVAL when the packet size is greater than maxpacksize. The comparison with ep->packsize[1] alone should suffice since it's always equal or greater than ep->packsize[0].
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected 02c56650f3c118d3752122996d96173d26bb13aa before 480a1490c595a242f27493a4544b3efb21b29f6a; affected 5ef30e443e6d3654cccecec99cf481a69a0a6d3b before ab0b5e92fc36ee82c1bd01fe896d0f775ed5de41; affected 99703c921864a318e3e8aae74fde071b1ff35bea before 282aba56713bbc58155716b55ca7222b2d9cf3c8; affected 2d50acd7dbd0682a56968ad9551341d7fc5b6eaf before c4dc012b027c9eb101583011089dea14d744e314; affected aba41867dd66939d336fdf604e4d73b805d8039f before e0ed5a36fb3ab9e7b9ee45cd17f09f6d5f594360; affected d288dc74f8cf95cb7ae0aaf245b7128627a49bf3 before d67dde02049e632ba58d3c44a164a74b6a737154; affected f0bd62b64016508938df9babe47f65c2c727d25c before 6a5da3fa80affc948923f20a4e086177f505e86e; affected f0bd62b64016508938df9babe47f65c2c727d25c before 217d47255a2ec8b246f2725f5db9ac3f1d4109d7; affected f0bd62b64016508938df9babe47f65c2c727d25c before ef592bf2232a2daa9fffa8881881fc9957ea56e9; affected f0bd62b64016508938df9babe47f65c2c727d25c before ece3b981bb6620e47fac826a2156c090b1a936a0; affected f0bd62b64016508938df9babe47f65c2c727d25c before 98e9d5e33bda8db875cc1a4fe99c192658e45ab6; affected f0bd62b64016508938df9babe47f65c2c727d25c before d2c04f20ccc6c0d219e6d3038bab45bc66a178ad; affected f0bd62b64016508938df9babe47f65c2c727d25c before 05a1fc5efdd8560f34a3af39c9cf1e1526cc3ddf; affected 4.4.229 before 4.4.230; affected 4.9.229 before 4.9.230; affected 4.14.186 before 4.14.188; affected 4.19.130 before 4.19.132; affected 5.4.49 before 5.4.51; affected 5.7.6 before 5.7.8 |
| Linux / Linux | affected 5.8; unaffected 0 before 5.8; unaffected 4.4.230 through 4.4.*; unaffected 4.9.230 through 4.9.*; unaffected 4.14.188 through 4.14.*; unaffected 4.19.132 through 4.19.*; unaffected 5.4.51 through 5.4.*; unaffected 5.7.8 through 5.7.*; unaffected 5.10.247 through 5.10.*; unaffected 5.15.197 through 5.15.*; unaffected 6.1.159 through 6.1.*; unaffected 6.6.117 through 6.6.*; unaffected 6.12.59 through 6.12.*; unaffected 6.17.9 through 6.17.*; unaffected 6.18 through * |
CWE
No CWE identifiers supplied.
References
- https://git.kernel.org/stable/c/480a1490c595a242f27493a4544b3efb21b29f6a
- https://git.kernel.org/stable/c/ab0b5e92fc36ee82c1bd01fe896d0f775ed5de41
- https://git.kernel.org/stable/c/282aba56713bbc58155716b55ca7222b2d9cf3c8
- https://git.kernel.org/stable/c/c4dc012b027c9eb101583011089dea14d744e314
- https://git.kernel.org/stable/c/e0ed5a36fb3ab9e7b9ee45cd17f09f6d5f594360
- https://git.kernel.org/stable/c/d67dde02049e632ba58d3c44a164a74b6a737154
- https://git.kernel.org/stable/c/6a5da3fa80affc948923f20a4e086177f505e86e
- https://git.kernel.org/stable/c/217d47255a2ec8b246f2725f5db9ac3f1d4109d7
- https://git.kernel.org/stable/c/ef592bf2232a2daa9fffa8881881fc9957ea56e9
- https://git.kernel.org/stable/c/ece3b981bb6620e47fac826a2156c090b1a936a0
- https://git.kernel.org/stable/c/98e9d5e33bda8db875cc1a4fe99c192658e45ab6
- https://git.kernel.org/stable/c/d2c04f20ccc6c0d219e6d3038bab45bc66a178ad
- https://git.kernel.org/stable/c/05a1fc5efdd8560f34a3af39c9cf1e1526cc3ddf
ADP enrichment
No English description supplied.
No references supplied.