vulnerability
Arch Linux: Denial of service (CVE-2021-40839)
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 5 | (AV:N/AC:L/Au:N/C:N/I:N/A:P) | Sep 10, 2021 | Jul 11, 2025 | Jan 5, 2026 |
Severity
5
CVSS
(AV:N/AC:L/Au:N/C:N/I:N/A:P)
Published
Sep 10, 2021
Added
Jul 11, 2025
Modified
Jan 5, 2026
Description
The rencode package through 1.0.6 for Python allows an infinite loop in typecode decoding (such as via ;\x2f\x7f), enabling a remote attack that consumes CPU and memory.
Solution
arch-linux-upgrade-latest
References
- CVE-2021-40839
- https://attackerkb.com/topics/CVE-2021-40839
- URL-https://github.com/aresch/rencode/commit/572ff74586d9b1daab904c6f7f7009ce0143bb75
- URL-https://github.com/aresch/rencode/pull/29
- URL-https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BMVQRPDVSVZNGGX57CFKCYT3DEYO4QB6/
- URL-https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/MCLETLGVM5DBX6QNHQFW6TWGO5T3DENY/
- URL-https://pypi.org/project/rencode/#history
- URL-https://seclists.org/fulldisclosure/2021/Sep/16
- URL-https://security.netapp.com/advisory/ntap-20211008-0001/
- CWE-835
NEW
Explore Exposure Command
Confidently identify and prioritize exposures from endpoint to cloud with full attack surface visibility and threat-aware risk context.