CVE catalog
CVE-2020-36323
rustc: CVE-2020-36323
- Severity
- High · CVSS 8.2
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H - Published
- Source
- [NVD] · [CVE record]
- EPSS
- 2.02% · Oct 25, 2026
In the standard library in Rust before 1.52.0, there is an optimization for joining strings that can cause uninitialized bytes to be exposed (or the program to crash) if the borrowed string changes after its length is checked.
Vulnerable and fixed packages
Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.
| Distribution | Package | Release | Version | Status |
|---|---|---|---|---|
| Debian | rustc | sid | 1.97.1+dfsg1-1 | fixed |
| Debian | rustc | forky | 1.97.1+dfsg1-1 | fixed |
| Debian | rustc | trixie | 1.85.1+dfsg1-1+deb13u1 | fixed |
| Debian | rustc | bookworm | 1.63.0+dfsg1-2 | fixed |
| Alpine | rust | 3.19 | 1.51.0-r2 | fixed |
| Alpine | rust | 3.20 | 1.51.0-r2 | fixed |
| Alpine | rust | 3.21 | 1.51.0-r2 | fixed |
| Alpine | rust | 3.22 | 1.51.0-r2 | fixed |
| Alpine | rust | 3.23 | 1.51.0-r2 | fixed |
| Alpine | rust | 3.24 | 1.51.0-r2 | fixed |
| Ubuntu | rustc | pro | 1.7.0+dfsg1-1 | vulnerable |
| Ubuntu | rustc | pro | 1.15.1+dfsg0-1~exp1ubuntu2~16.04.3 | vulnerable |
| Ubuntu | rustc | pro | 1.17.0+dfsg2-8~ubuntu0.16.04.2 | vulnerable |
| Ubuntu | rustc | pro | 1.21.0+dfsg1+llvm-0ubuntu3~16.04.1 | vulnerable |
| Ubuntu | rustc | pro | 1.22.1+dfsg1+llvm-0ubuntu2~16.04.2 | vulnerable |
| Ubuntu | rustc | pro | 1.24.1+dfsg1+llvm-0ubuntu1~16.04.1 | vulnerable |
| Ubuntu | rustc | pro | 1.25.0+dfsg1+llvm-0ubuntu1~16.04.1 | vulnerable |
| Ubuntu | rustc | pro | 1.28.0+dfsg1+llvm-0ubuntu1~16.04.1 | vulnerable |
| Ubuntu | rustc | pro | 1.30.0+dfsg1+llvm-2ubuntu1~16.04.1 | vulnerable |
| Ubuntu | rustc | pro | 1.31.0+dfsg1+llvm-2ubuntu1~16.04.1 | vulnerable |
| Ubuntu | rustc | pro | 1.32.0+dfsg1+llvm-1ubuntu1~16.04.1 | vulnerable |
| Ubuntu | rustc | pro | 1.34.1+dfsg2+llvm-0ubuntu1~16.04.1 | vulnerable |
| Ubuntu | rustc | pro | 1.35.0+dfsg0.1+llvm-0ubuntu1~16.04.1 | vulnerable |
| Ubuntu | rustc | pro | 1.36.0+dfsg1+llvm-2ubuntu1~16.04.1 | vulnerable |
| Ubuntu | rustc | pro | 1.37.0+dfsg1+llvm-1ubuntu1~16.04.1 | vulnerable |
| Ubuntu | rustc | pro | 1.39.0+dfsg1+llvm-3ubuntu1~16.04.1 | vulnerable |
| Ubuntu | rustc | pro | 1.41.0+dfsg1+llvm-0ubuntu1~16.04.1 | vulnerable |
| Ubuntu | rustc | pro | 1.43.0+dfsg1+llvm-1~exp1ubuntu2~16.04.1 | vulnerable |
| Ubuntu | rustc | pro | 1.47.0+dfsg1+llvm-1ubuntu1~16.04.1 | vulnerable |
| Ubuntu | rustc | pro | 1.47.0+dfsg1+llvm-1ubuntu1~16.04.1ubuntu2 | vulnerable |
| Ubuntu | rustc | 20.04 | 1.37.0+dfsg1+llvm-1ubuntu1 | vulnerable |
| Ubuntu | rustc | 20.04 | 1.38.0+dfsg0.2+llvm-0ubuntu1 | vulnerable |
| Ubuntu | rustc | 20.04 | 1.38.0+dfsg0.2+llvm-0ubuntu2 | vulnerable |
| Ubuntu | rustc | 20.04 | 1.39.0+dfsg1+llvm-3ubuntu1 | vulnerable |
| Ubuntu | rustc | 20.04 | 1.40.0+dfsg1+llvm-5ubuntu1 | vulnerable |
| Ubuntu | rustc | 20.04 | 1.41.0+dfsg1+llvm-0ubuntu1 | vulnerable |
| Ubuntu | rustc | 20.04 | 1.41.0+dfsg1+llvm-0ubuntu2 | vulnerable |
| Ubuntu | rustc | 20.04 | 1.43.0+dfsg1+llvm-1~exp1ubuntu1~20.04.1 | vulnerable |
| Ubuntu | rustc | 20.04 | 1.47.0+dfsg1+llvm-1ubuntu1~20.04.1 | vulnerable |
| Ubuntu | rustc | 20.04 | 1.51.0+dfsg1+llvm-1~exp3ubuntu1~20.04.2 | vulnerable |
| Ubuntu | rustc | 20.04 | 1.53.0+dfsg1+llvm-4ubuntu1~20.04.1 | fixed |
| Ubuntu | rustc | 22.04 | 1.51.0+dfsg1+llvm-1~exp3ubuntu1 | vulnerable |
| Ubuntu | rustc | 22.04 | 1.53.0+dfsg1+llvm-4ubuntu1 | fixed |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Debian | rustc | source | sid | 1.53.0+dfsg1-1 | not yet assigned | Not reported | Not reported |
| Debian | rustc | source | forky | 1.53.0+dfsg1-1 | not yet assigned | Not reported | Not reported |
| Debian | rustc | source | trixie | 1.53.0+dfsg1-1 | not yet assigned | Not reported | Not reported |
| Debian | rustc | source | bookworm | 1.53.0+dfsg1-1 | not yet assigned | Not reported | Not reported |
| Alpine | rust | apk | 3.19 | 1.51.0-r2 | Not reported | ALPINE-CVE-2020-36323 | Not reported |
| Alpine | rust | apk | 3.20 | 1.51.0-r2 | Not reported | ALPINE-CVE-2020-36323 | Not reported |
| Alpine | rust | apk | 3.21 | 1.51.0-r2 | Not reported | ALPINE-CVE-2020-36323 | Not reported |
| Alpine | rust | apk | 3.22 | 1.51.0-r2 | Not reported | ALPINE-CVE-2020-36323 | Not reported |
| Alpine | rust | apk | 3.23 | 1.51.0-r2 | Not reported | ALPINE-CVE-2020-36323 | Not reported |
| Alpine | rust | apk | 3.24 | 1.51.0-r2 | Not reported | ALPINE-CVE-2020-36323 | Not reported |
| Ubuntu | rustc | deb | 20.04 | 1.53.0+dfsg1+llvm-4ubuntu1~20.04.1 | Not reported | UBUNTU-CVE-2020-36323 | Not reported |
| Ubuntu | rustc | deb | 22.04 | 1.53.0+dfsg1+llvm-4ubuntu1 | Not reported | UBUNTU-CVE-2020-36323 | Not reported |
OpenFactory catalog packages
[Debian 12 (Bookworm)]
- [libstd-rust-1.63]Fixed
Source package: [rustc]
Details (2)
1.63.0+dfsg1-2· amd64 · bookwormFixed · Fixed:
1.53.0+dfsg1-1dsa · rustc · debian · bookworm; dsa · rustc · debian · 12
1.63.0+dfsg1-2· arm64 · bookwormFixed · Fixed:
1.53.0+dfsg1-1dsa · rustc · debian · bookworm; dsa · rustc · debian · 12
- [libstd-rust-dev]Fixed
Source package: [rustc]
Details (2)
1.63.0+dfsg1-2· amd64 · bookwormFixed · Fixed:
1.53.0+dfsg1-1dsa · rustc · debian · bookworm; dsa · rustc · debian · 12
1.63.0+dfsg1-2· arm64 · bookwormFixed · Fixed:
1.53.0+dfsg1-1dsa · rustc · debian · bookworm; dsa · rustc · debian · 12
- [libstd-rust-dev-wasm32]Fixed
Source package: [rustc]
Details (2)
1.63.0+dfsg1-2· all · bookwormFixed · Fixed:
1.53.0+dfsg1-1dsa · rustc · debian · bookworm; dsa · rustc · debian · 12
1.63.0+dfsg1-2· all · bookwormFixed · Fixed:
1.53.0+dfsg1-1dsa · rustc · debian · bookworm; dsa · rustc · debian · 12
- [libstd-rust-dev-windows]Fixed
Source package: [rustc]
Details (1)
1.63.0+dfsg1-2· amd64 · bookwormFixed · Fixed:
1.53.0+dfsg1-1dsa · rustc · debian · bookworm; dsa · rustc · debian · 12
- [rust-all]Fixed
Source package: [rustc]
Details (2)
1.63.0+dfsg1-2· all · bookwormFixed · Fixed:
1.53.0+dfsg1-1dsa · rustc · debian · bookworm; dsa · rustc · debian · 12
1.63.0+dfsg1-2· all · bookwormFixed · Fixed:
1.53.0+dfsg1-1dsa · rustc · debian · bookworm; dsa · rustc · debian · 12
- [rustc]Fixed
Details (2)
1.63.0+dfsg1-2· amd64 · bookwormFixed · Fixed:
1.53.0+dfsg1-1dsa · rustc · debian · bookworm; dsa · rustc · debian · 12
1.63.0+dfsg1-2· arm64 · bookwormFixed · Fixed:
1.53.0+dfsg1-1dsa · rustc · debian · bookworm; dsa · rustc · debian · 12
- [rust-clippy]Fixed
Source package: [rustc]
Details (2)
1.63.0+dfsg1-2· amd64 · bookwormFixed · Fixed:
1.53.0+dfsg1-1dsa · rustc · debian · bookworm; dsa · rustc · debian · 12
1.63.0+dfsg1-2· arm64 · bookwormFixed · Fixed:
1.53.0+dfsg1-1dsa · rustc · debian · bookworm; dsa · rustc · debian · 12
- [rust-doc]Fixed
Source package: [rustc]
Details (2)
1.63.0+dfsg1-2· all · bookwormFixed · Fixed:
1.53.0+dfsg1-1dsa · rustc · debian · bookworm; dsa · rustc · debian · 12
1.63.0+dfsg1-2· all · bookwormFixed · Fixed:
1.53.0+dfsg1-1dsa · rustc · debian · bookworm; dsa · rustc · debian · 12
- [rustfmt]Fixed
Source package: [rustc]
Details (2)
1.63.0+dfsg1-2· amd64 · bookwormFixed · Fixed:
1.53.0+dfsg1-1dsa · rustc · debian · bookworm; dsa · rustc · debian · 12
1.63.0+dfsg1-2· arm64 · bookwormFixed · Fixed:
1.53.0+dfsg1-1dsa · rustc · debian · bookworm; dsa · rustc · debian · 12
- [rust-gdb]Fixed
Source package: [rustc]
Details (2)
1.63.0+dfsg1-2· all · bookwormFixed · Fixed:
1.53.0+dfsg1-1dsa · rustc · debian · bookworm; dsa · rustc · debian · 12
1.63.0+dfsg1-2· all · bookwormFixed · Fixed:
1.53.0+dfsg1-1dsa · rustc · debian · bookworm; dsa · rustc · debian · 12
- [rust-lldb]Fixed
Source package: [rustc]
Details (2)
1.63.0+dfsg1-2· all · bookwormFixed · Fixed:
1.53.0+dfsg1-1dsa · rustc · debian · bookworm; dsa · rustc · debian · 12
1.63.0+dfsg1-2· all · bookwormFixed · Fixed:
1.53.0+dfsg1-1dsa · rustc · debian · bookworm; dsa · rustc · debian · 12
- [rust-src]Fixed
Source package: [rustc]
Details (2)
1.63.0+dfsg1-2· all · bookwormFixed · Fixed:
1.53.0+dfsg1-1dsa · rustc · debian · bookworm; dsa · rustc · debian · 12
1.63.0+dfsg1-2· all · bookwormFixed · Fixed:
1.53.0+dfsg1-1dsa · rustc · debian · bookworm; dsa · rustc · debian · 12
[Debian 13 (Trixie)]
- [cargo]Fixed
Source package: [rustc]
Details (4)
1.85.0+dfsg3-1· amd64 · trixieFixed · Fixed:
1.53.0+dfsg1-1dsa · rustc · debian · 13
1.85.0+dfsg3-1· arm64 · trixieFixed · Fixed:
1.53.0+dfsg1-1dsa · rustc · debian · 13
1.94.1+dfsg1-1~bpo13+3· amd64 · trixie-backportsFixed · Fixed:
1.53.0+dfsg1-1dsa · rustc · debian · 13
1.94.1+dfsg1-1~bpo13+3· arm64 · trixie-backportsFixed · Fixed:
1.53.0+dfsg1-1dsa · rustc · debian · 13
- [cargo-doc]Fixed
Source package: [rustc]
Details (20)
1.85.0+dfsg3-1· all · trixieFixed · Fixed:
1.53.0+dfsg1-1dsa · rustc · debian · 13
1.85.0+dfsg3-1· all · trixieFixed · Fixed:
1.53.0+dfsg1-1dsa · rustc · debian · 13
1.86.0+dfsg1-1~bpo13+2· all · trixie-backportsFixed · Fixed:
1.53.0+dfsg1-1dsa · rustc · debian · 13
1.86.0+dfsg1-1~bpo13+2· all · trixie-backportsFixed · Fixed:
1.53.0+dfsg1-1dsa · rustc · debian · 13
1.87.0+dfsg1-1~bpo13+2· all · trixie-backportsFixed · Fixed:
1.53.0+dfsg1-1dsa · rustc · debian · 13
1.87.0+dfsg1-1~bpo13+2· all · trixie-backportsFixed · Fixed:
1.53.0+dfsg1-1dsa · rustc · debian · 13
1.88.0+dfsg1-2~bpo13+1· all · trixie-backportsFixed · Fixed:
1.53.0+dfsg1-1dsa · rustc · debian · 13
1.88.0+dfsg1-2~bpo13+1· all · trixie-backportsFixed · Fixed:
1.53.0+dfsg1-1dsa · rustc · debian · 13
1.89.0+dfsg1-1~bpo13+2· all · trixie-backportsFixed · Fixed:
1.53.0+dfsg1-1dsa · rustc · debian · 13
1.89.0+dfsg1-1~bpo13+2· all · trixie-backportsFixed · Fixed:
1.53.0+dfsg1-1dsa · rustc · debian · 13
1.90.0+dfsg1-1~bpo13+2· all · trixie-backportsFixed · Fixed:
1.53.0+dfsg1-1dsa · rustc · debian · 13
1.90.0+dfsg1-1~bpo13+2· all · trixie-backportsFixed · Fixed:
1.53.0+dfsg1-1dsa · rustc · debian · 13
1.91.1+dfsg1-1~bpo13+2· all · trixie-backportsFixed · Fixed:
1.53.0+dfsg1-1dsa · rustc · debian · 13
1.91.1+dfsg1-1~bpo13+2· all · trixie-backportsFixed · Fixed:
1.53.0+dfsg1-1dsa · rustc · debian · 13
1.92.0+dfsg1-2~bpo13+1· all · trixie-backportsFixed · Fixed:
1.53.0+dfsg1-1dsa · rustc · debian · 13
1.92.0+dfsg1-2~bpo13+1· all · trixie-backportsFixed · Fixed:
1.53.0+dfsg1-1dsa · rustc · debian · 13
1.93.1+dfsg1-2~bpo13+1· all · trixie-backportsFixed · Fixed:
1.53.0+dfsg1-1dsa · rustc · debian · 13
1.93.1+dfsg1-2~bpo13+1· all · trixie-backportsFixed · Fixed:
1.53.0+dfsg1-1dsa · rustc · debian · 13
1.94.1+dfsg1-1~bpo13+3· all · trixie-backportsFixed · Fixed:
1.53.0+dfsg1-1dsa · rustc · debian · 13
1.94.1+dfsg1-1~bpo13+3· all · trixie-backportsFixed · Fixed:
1.53.0+dfsg1-1dsa · rustc · debian · 13
- [libstd-rust-1.85]Fixed
Source package: [rustc]
Details (2)
1.85.0+dfsg3-1· amd64 · trixieFixed · Fixed:
1.53.0+dfsg1-1dsa · rustc · debian · 13
1.85.0+dfsg3-1· arm64 · trixieFixed · Fixed:
1.53.0+dfsg1-1dsa · rustc · debian · 13
- [libstd-rust-1.86]Fixed
Source package: [rustc]
Details (2)
1.86.0+dfsg1-1~bpo13+2· amd64 · trixie-backportsFixed · Fixed:
1.53.0+dfsg1-1dsa · rustc · debian · 13
1.86.0+dfsg1-1~bpo13+2· arm64 · trixie-backportsFixed · Fixed:
1.53.0+dfsg1-1dsa · rustc · debian · 13
- [libstd-rust-1.87]Fixed
Source package: [rustc]
Details (2)
1.87.0+dfsg1-1~bpo13+2· amd64 · trixie-backportsFixed · Fixed:
1.53.0+dfsg1-1dsa · rustc · debian · 13
1.87.0+dfsg1-1~bpo13+2· arm64 · trixie-backportsFixed · Fixed:
1.53.0+dfsg1-1dsa · rustc · debian · 13
- [libstd-rust-1.88]Fixed
Source package: [rustc]
Details (2)
1.88.0+dfsg1-2~bpo13+1· amd64 · trixie-backportsFixed · Fixed:
1.53.0+dfsg1-1dsa · rustc · debian · 13
1.88.0+dfsg1-2~bpo13+1· arm64 · trixie-backportsFixed · Fixed:
1.53.0+dfsg1-1dsa · rustc · debian · 13
- [libstd-rust-1.89]Fixed
Source package: [rustc]
Details (2)
1.89.0+dfsg1-1~bpo13+2· amd64 · trixie-backportsFixed · Fixed:
1.53.0+dfsg1-1dsa · rustc · debian · 13
1.89.0+dfsg1-1~bpo13+2· arm64 · trixie-backportsFixed · Fixed:
1.53.0+dfsg1-1dsa · rustc · debian · 13
- [libstd-rust-1.90]Fixed
Source package: [rustc]
Details (2)
1.90.0+dfsg1-1~bpo13+2· amd64 · trixie-backportsFixed · Fixed:
1.53.0+dfsg1-1dsa · rustc · debian · 13
1.90.0+dfsg1-1~bpo13+2· arm64 · trixie-backportsFixed · Fixed:
1.53.0+dfsg1-1dsa · rustc · debian · 13
Observed:
References
- [https://ftp.suse.com/pub/projects/security/csaf/rhsa-2021_3063.json]
- [https://osv.dev/vulnerability/ALPINE-CVE-2020-36323]
- [https://osv.dev/vulnerability/DEBIAN-CVE-2020-36323]
- [https://osv.dev/vulnerability/UBUNTU-CVE-2020-36323]
- [https://security-tracker.debian.org/tracker/CVE-2020-36323]
- [https://security.access.redhat.com/data/csaf/v2/vex/2020/cve-2020-36323.json]
[Debian Security Tracker] · [FIRST EPSS] · [OSV Package Vulnerability Database] · [Red Hat security advisories and VEX] · [SUSE security advisories and VEX]