In the Linux kernel, the following vulnerability has been resolved:

staging: nvec: fix use-after-free in nvec_rx_completed()

In nvec_rx_completed(), when an incomplete RX transfer is detected,
nvec_msg_free() is called to return the message back to the pool by
clearing its 'used' atomic flag. Immediately after this, the code
accesses nvec->rx->data[0] to check the message type.

Since nvec_msg_free() marks the pool slot as available via atomic_set(),
any concurrent or subsequent call to nvec_msg_alloc() could claim that
same slot and overwrite its data[] array. Reading nvec->rx->data[0] after
freeing the message is therefore a use-after-free.

Fix this by saving the message type byte before calling nvec_msg_free(),
then using the saved value for the battery quirk check.

https://git.kernel.org/stable/c/08626fcfe12308ca3f8b22c538ba7dee0b2dce7a

https://git.kernel.org/stable/c/26813881181deb3a32fbb59eadb2599cbe8423f6

https://git.kernel.org/stable/c/5de04caa46b635e180cecbd164e333eca535db94

https://git.kernel.org/stable/c/6b2ea886ebdae44a2394029844a4e78f58e1587d

https://git.kernel.org/stable/c/9f7fe4165a1f1014bdadc8e744c0fd3c2d8c0b89

https://git.kernel.org/stable/c/a37625c7b688fcf68a54263528eccbabfd7fa17a

https://git.kernel.org/stable/c/bb3d592c7d6c4ec8ac6640c690ca13298e7e8e90

https://git.kernel.org/stable/c/f19a5bc059051143c489dd6f79a0f9c3bfd13aea

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