# CVE-2021-33294: elfutils: In elfutils 0.183, an infinite loop was found in the function handle_symtab in readelf.c .Which allows attackers to c...

CVE-2021-33294 is fixed in 4 products on 1 platform, first by DEBIAN-CVE-2021-33294, released July 18, 2023. It is not reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/cve/CVE-2021-33294
- Priority: Routine
- CVSS: 5.5 (medium)
- EPSS: 0.0033
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Jul 18, 2023

## Description

In elfutils 0.183, an infinite loop was found in the function handle_symtab in readelf.c .Which allows attackers to cause a denial of service (infinite loop) via crafted file.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | elfutils Debian 12.15 (bookworm) | 0.185-2 | [DEBIAN-CVE-2021-33294](https://patchblox.com/security/data/fix/linux/debian-cve-2021-33294.md) | Jul 18, 2023 |
| Linux | elfutils Debian 13.5 (trixie) | 0.185-2 | [DEBIAN-CVE-2021-33294](https://patchblox.com/security/data/fix/linux/debian-cve-2021-33294.md) | Jul 18, 2023 |
| Linux | elfutils Debian 14 | 0.185-2 | [DEBIAN-CVE-2021-33294](https://patchblox.com/security/data/fix/linux/debian-cve-2021-33294.md) | Jul 18, 2023 |
| Linux | elfutils Ubuntu 18.04.6 LTS (bionic) | 0.170-0.4ubuntu0.1+esm1 | [elfutils 0.170-0.4ubuntu0.1+esm1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-elfutils-0.170-0.4ubuntu0.1-esm1.md) | Aug 22, 2023 |
| Linux | elfutils Ubuntu 20.04 LTS (focal) | 0.176-1.1ubuntu0.1 | [elfutils 0.176-1.1ubuntu0.1](https://patchblox.com/security/data/fix/linux/ubuntu-focal-elfutils-0.176-1.1ubuntu0.1.md) | Aug 22, 2023 |
| Linux | libasm1 Ubuntu 18.04.6 LTS (bionic) | 0.170-0.4ubuntu0.1+esm1 | [libasm1 0.170-0.4ubuntu0.1+esm1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-libasm1-0.170-0.4ubuntu0.1-esm1.md) | Aug 22, 2023 |
| Linux | libasm1 Ubuntu 20.04 LTS (focal) | 0.176-1.1ubuntu0.1 | [libasm1 0.176-1.1ubuntu0.1](https://patchblox.com/security/data/fix/linux/ubuntu-focal-libasm1-0.176-1.1ubuntu0.1.md) | Aug 22, 2023 |
| Linux | libdw1 Ubuntu 18.04.6 LTS (bionic) | 0.170-0.4ubuntu0.1+esm1 | [libdw1 0.170-0.4ubuntu0.1+esm1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-libdw1-0.170-0.4ubuntu0.1-esm1.md) | Aug 22, 2023 |
| Linux | libdw1 Ubuntu 20.04 LTS (focal) | 0.176-1.1ubuntu0.1 | [libdw1 0.176-1.1ubuntu0.1](https://patchblox.com/security/data/fix/linux/ubuntu-focal-libdw1-0.176-1.1ubuntu0.1.md) | Aug 22, 2023 |
| Linux | libelf1 Ubuntu 18.04.6 LTS (bionic) | 0.170-0.4ubuntu0.1+esm1 | [libelf1 0.170-0.4ubuntu0.1+esm1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-libelf1-0.170-0.4ubuntu0.1-esm1.md) | Aug 22, 2023 |
| Linux | libelf1 Ubuntu 20.04 LTS (focal) | 0.176-1.1ubuntu0.1 | [libelf1 0.176-1.1ubuntu0.1](https://patchblox.com/security/data/fix/linux/ubuntu-focal-libelf1-0.176-1.1ubuntu0.1.md) | Aug 22, 2023 |

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Data as of 2026-11-08T06:59:42Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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