7.5

CVE-2024-32650: rustls Infinite Loop

CVSS: 7.5v3.1HighDeferred
AliasesSUSE-SU-2025:03629-1openSUSE-SU-2024:0130-1UBUNTU-CVE-2024-32650
Published 19-04-2024Last modified 02-08-2024
Open JSON

Vulnerability summary

CVE-2024-32650 is a high (CVSS 7.5) Infinite Loop vulnerability in rustls. EPSS estimates a 0.95% chance of exploitation in the next 30 days, higher than 60.5% of scored vulnerabilities.

Overall risk
30/100
0100
Medium · default modelHow is this calculated?
CVSS score
7.5/10
010
High · v3.1 (CVE.org)
EPSS score
0.95%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 7 · Related 13
OPENSUSE-SU-2024:13903-1OPENSUSE-SU-2026:21558-1SUSE-SU-2025:02809-1SUSE-SU-2025:02810-1SUSE-SU-2025:02811-1SUSE-SU-2025:20057-1

Timeline

  1. 19-04-2024
    PublishedVulnerability first disclosed.
  2. 02-08-2024
    Last modifiedVulnerability information updated.

Description

Rustls is a modern TLS library written in Rust. `rustls::ConnectionCommon::complete_io` could fall into an infinite loop based on network input. When using a blocking rustls server, if a client send a `close_notify` message immediately after `client_hello`, the server's `complete_io` will get in an infinite loop. This vulnerability is fixed in 0.23.5, 0.22.4, and 0.21.11.

CVSS metrics

7 scores · 7 sources · 1 version

EPSS trend

Probability

0.95%

Chance of exploitation in the next 30 days

Percentile

61%

Versus all other CVEs

30-day change

0.00 pp

From 0.95% on 19-09-2026

19-09-202619-10-2026
EPSS score
0.95%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Opensuse8 products
  • git-cliff&distro=openSUSE Leap 15.5< 2.2.2-bp155.2.3.1
  • gitoxide&distro=openSUSE Tumbleweed< 0.38.0-1.1
  • gstreamer-plugins-rs&distro=openSUSE Leap 15.6< 0.12.11-150600.3.3.1
  • kubetui&distro=openSUSE Tumbleweed< 1.5.1-1.1
  • sccache&distro=openSUSE Tumbleweed< 0.8.0~3-1.1
Chainguard6 products
  • cargo-audit< 0.21.2-r1
  • kdash< 0.6.1-r0
  • pgcat< 1.2.0-r1
  • samply< 0.12.0-r2
  • wasmcloud< 1.1.0-r0
Wolfi6 products
  • cargo-audit< 0.21.2-r1
  • kdash< 0.6.1-r0
  • pgcat< 1.2.0-r1
  • samply< 0.12.0-r2
  • wasmcloud< 1.1.0-r0
Suse3 products
  • git-cliff&distro=SUSE Package Hub 15 SP5< 2.2.2-bp155.2.3.1
  • gstreamer-plugins-rs&distro=SUSE Linux Enterprise Module for Desktop Applications 15 SP6< 0.12.11-150600.3.3.1
  • gstreamer-plugins-rs&distro=SUSE Linux Enterprise Module for Desktop Applications 15 SP7< 0.12.11-150600.3.3.1
Crates.Io1 product
  • rustls≥ 0.22.0, < 0.22.4 | ≥ 0.21.0, < 0.21.11 | 0.20 | ≥ 0.23.0, < 0.23.5
Debian1 product
  • rust-rustlsAll versions (No fix recorded) | < 0.21.12-1
Rustls1 product
  • rustls≥ 0.23.0, < 0.23.5 | ≥ 0.22.0, < 0.22.4 | ≥ 0.21.0, < 0.21.11 | = 0.20.0
Ubuntu1 product
  • rust-rustlsAll versions (No fix recorded)

8 vendors · 27 products

References

19 links
Show all 19 references