CVE-2023-52616: crypto: lib/mpi - Fix unexpected pointer access in mpi_ec_init
Vulnerability summary
CVE-2023-52616 is a high (CVSS 7.8) vulnerability in debian debian_linux. EPSS estimates a 0.24% chance of exploitation in the next 30 days, higher than 15.4% of scored vulnerabilities.
Not severe (CVSS 7.8, local access); no exploitation reported by the 5 checked sources
Source freshness unavailable
How is this decided?Advisory lineage
Upstream 0 · Downstream 23 · Related 24Timeline
- 18-03-2024PublishedVulnerability first disclosed.
- 05-08-2026Last modifiedVulnerability information updated.
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.
CVSS metrics
5 scores · 4 sources · 2 versions- OSV · UbuntuEcosystem advisory · calculated7.8HighCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- OSV · DebianEcosystem advisory · calculated5.5MediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:HDiffers
- NVDNIST5.5MediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:HDiffers
EPSS trend
Probability
0.24%
Chance of exploitation in the next 30 days
Percentile
15%
Versus all other CVEs
30-day change
No change 0.00 pp
From 0.24% on 04-10-2026
Known exploited
Compare KEV catalogs
CISA KEVNot in the CISA KEV catalog.
ENISA CNWNot in the ENISA CNW catalog.
CIRCLNot in the CIRCL catalog.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeNo weakness data has been published for this record.
Affected systems
Known conditions: local access, low-privilege account, no user interaction (CVSS vector). Other conditions: not stated in public data.
Ubuntu104 products
- linux< 5.15.0-106.116
- linux-allwinner-5.19All versions (No fix recorded)
- linux-aws< 5.15.0-1061.67
- linux-aws-5.0All versions (No fix recorded)
- linux-aws-5.11All versions (No fix recorded)
Debian2 products
- linux< 6.1.82-1 | < 6.6.15-1
- debian_linuxEOL10.0
Linux2 products
- linux≥ d58bb7e55a8a65894cc02f27c3e2bf9403e7c40f, < 0c3687822259a7628c85cd21a3445cbe3c367165 | ≥ d58bb7e55a8a65894cc02f27c3e2bf9403e7c40f, < 2bb86817b33c9d704e127f92b838035a72c315b6 | ≥ d58bb7e55a8a65894cc02f27c3e2bf9403e7c40f, < bb44477d4506e52785693a39f03cdc6a2c5e8598 | ≥ d58bb7e55a8a65894cc02f27c3e2bf9403e7c40f, < 7ebf812b7019fd2d4d5a7ca45ef4bf3a6f4bda0a | ≥ d58bb7e55a8a65894cc02f27c3e2bf9403e7c40f, < 7abdfd45a650c714d5ebab564bb1b988f14d9b49 | ≥ d58bb7e55a8a65894cc02f27c3e2bf9403e7c40f, < ba3c5574203034781ac4231acf117da917efcd2a | 5.10
- linux_kernel≥ 5.10, < 5.10.210 | ≥ 5.11, < 5.15.149 | ≥ 5.16, < 6.1.79 | ≥ 6.2, < 6.6.15 | ≥ 6.7, < 6.7.3
3 vendors · 108 products
