- Vulnerability/
- CVE-2023-52616
CVE-2023-52616: crypto: lib/mpi - Fix unexpected pointer access in mpi_ec_init
First published: Mon Mar 18 2024(Updated: )
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.
Credit: 416baaa9-dc9f-4396-8d5f-8c081fb06d67 416baaa9-dc9f-4396-8d5f-8c081fb06d67
| Affected Software | Affected Version | How to fix |
|---|---|---|
| debian/linux | 5.10.223-1 5.10.226-1 6.1.123-1 6.1.119-1 6.12.11-1 6.12.12-1 |
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Reference Links
- https://git.kernel.org/stable/c/0c3687822259a7628c85cd21a3445cbe3c367165
- https://git.kernel.org/stable/c/2bb86817b33c9d704e127f92b838035a72c315b6
- https://git.kernel.org/stable/c/7abdfd45a650c714d5ebab564bb1b988f14d9b49
- https://git.kernel.org/stable/c/7ebf812b7019fd2d4d5a7ca45ef4bf3a6f4bda0a
- https://git.kernel.org/stable/c/ba3c5574203034781ac4231acf117da917efcd2a
- https://git.kernel.org/stable/c/bb44477d4506e52785693a39f03cdc6a2c5e8598
- https://launchpad.net/bugs/cve/CVE-2023-52616
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-52616
- https://nvd.nist.gov/vuln/detail/CVE-2023-52616
- https://security-tracker.debian.org/tracker/CVE-2023-52616
- https://ubuntu.com/security/CVE-2023-52616
- https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html
- https://git.kernel.org/linus/ba3c5574203034781ac4231acf117da917efcd2a
Frequently Asked Questions
What is the severity of CVE-2023-52616?
CVE-2023-52616 has been classified as a high severity vulnerability due to the risk of application crashes.
How do I fix CVE-2023-52616?
To fix CVE-2023-52616, upgrade to the patched versions of the Linux kernel, specifically 5.10.223-1, 5.10.226-1, 6.1.119-1, 6.1.123-1, 6.12.10-1, or 6.12.11-1.
What is affected by CVE-2023-52616?
CVE-2023-52616 affects the Linux kernel packages in specific versions that have not cleared certain fields in the mpi_ec_ctx structure.
What is the impact of CVE-2023-52616?
The impact of CVE-2023-52616 can lead to a system crash when referencing uninitialized fields after the structure's release.
Is CVE-2023-52616 exploitability high?
Yes, the exploitability of CVE-2023-52616 is considered high due to the likelihood of triggering application crashes.
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