Vulnerability CVE-2023-52616
Published: 2024-03-18

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

crypto: lib/mpi - Fix unexpected pointer access in mpi_ec_init

When the mpi_ec_ctx structure is initialized, some fields are not
cleared, causing a crash when referencing the field when the
structure was released. Initially, this issue was ignored because
memory for mpi_ec_ctx is allocated with the __GFP_ZERO flag.
For example, this error will be triggered when calculating the
Za value for SM2 separately.

 References:
https://git.kernel.org/stable/c/0c3687822259a7628c85cd21a3445cbe3c367165
https://git.kernel.org/stable/c/2bb86817b33c9d704e127f92b838035a72c315b6
https://git.kernel.org/stable/c/bb44477d4506e52785693a39f03cdc6a2c5e8598
https://git.kernel.org/stable/c/7ebf812b7019fd2d4d5a7ca45ef4bf3a6f4bda0a
https://git.kernel.org/stable/c/7abdfd45a650c714d5ebab564bb1b988f14d9b49
https://git.kernel.org/stable/c/ba3c5574203034781ac4231acf117da917efcd2a
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