In the Linux kernel, the following vulnerability has been resolved:
Input: ims-pcu - fix out-of-bounds read in ims_pcu_irq() debug logging
The debug logging in ims_pcu_irq() unconditionally prints data from pcu->urb_in_buf. However, if the interrupt fired for pcu->urb_ctrl, the actual data resides in pcu->urb_ctrl_buf. If urb->actual_length for the control URB exceeds pcu->max_in_size, this leads to an out-of-bounds read.
Fix this by printing from the correct buffer associated with the URB.
References
- https://git.kernel.org/stable/c/20fbf3ca0259d00664d1ede88837e1f11b49a88e
- https://git.kernel.org/stable/c/3fd7c0ace245334f2a0bd29fdcb680ad56e9b275
- https://git.kernel.org/stable/c/403b0a6970b1084bb27907c0f8225801fdd0fe1d
- https://git.kernel.org/stable/c/4d2553e9a76a11500ec670cbe16b7fd3da4832de
- https://git.kernel.org/stable/c/9c964fc9507aeab74376ba9f892cf84ad6950dfe
- https://git.kernel.org/stable/c/b746e853721dee91e4234c033d1b90f4605705bb
- https://git.kernel.org/stable/c/e6153407d7edabc6ff98f0fda415d556c0bcb57a
- https://git.kernel.org/stable/c/f97bfc1a0766802a99167b3dc62d1ee7dca929fe