In the Linux kernel, the following vulnerability has been resolved:
Input: ims-pcu - fix potential infinite loop in CDC union descriptor parsing
The driver parses CDC union descriptors in ims_pcu_get_cdc_union_desc()
by iterating through the extra descriptor data. However, it does not
verify that the bLength of each descriptor is at least 2. A malicious
device could provide a descriptor with bLength = 0, leading to an
infinite loop in the driver.
Add a check to ensure bLength is at least 2 before proceeding with
parsing.
References 8
https://git.kernel.org/stable/c/383934c249a9817d242d02d30bfbc8defbf0d533
416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/6314bd9e2a6b3362998dc85485dd4b0f133a3532
416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/67a038c5a7c9bd8aabe6fba8ac9d2e31c0bd5a28
416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/76eeeb3a8e3c13d5c0ef28666b57dcb5cc101a32
416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/b847f2725ef47a26b3d01eca3d54fd811e5a544d
416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/bbbe31486cf2d12177462e4a814244c2597c9849
416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/d4579af29e67ca8722db0a1194227f8015c8981d
416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/e3f93d63dcd48c1f0ba9041f2ffa8aea7170e295
416baaa9-dc9f-4396-8d5f-8c081fb06d67