In the Linux kernel, the following vulnerability has been resolved:
ALSA: usbusx2y: fix in04_last array size mismatch with in04_buf
The in04_last array in struct usx2ydev is declared as char[24], but
in04_buf is allocated as sizeof(struct us428_ctls) which is 21 bytes.
In i_usx2y_in04_int(), when ctl_snapshot_last == -2 (initialization
path):
memcpy(usx2y->in04_last, usx2y->in04_buf, sizeof(usx2y->in04_last));
This copies 24 bytes from a 21-byte slab allocation, reading 3 bytes
past the end of the source object.
Introduce a USX2Y_IN04_SIZE constant defined as sizeof(struct
us428_ctls) and use it consistently for the in04_last array, the
in04_buf allocation, the URB transfer length, and the comparison loop,
replacing the bare 24 and 21 literals throughout.
from 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before e75e4b0e647137f4c9f6dee4a7ef5b7b09e16f57; from 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before 869fb83c072e884b80d93eab498e6040ffb010ba; from 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before d170cfbe38c8817ac787f605655546a6d343017d; from 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before 229cab526580f82839ae8e4e379753c8cf16952e; from 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before 381495b5b3da12d714e53d9d12d955b13fe26eac; from 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before b5753bdfd909f7f095fb464d67802b5e52cbadbf; from 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before 861111a14740e12c36d363e9830f8daa734279c9
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.
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