# CVE-2020-29363: p11-kit: The p11-kit packages provide a mechanism to manage PKCS#11 modules

CVE-2020-29363 is fixed in 6 products on 1 platform, first by libp11-kit0 0.23.9-2ubuntu0.1, released December 16, 2020. It is not reported as exploited. Patch Radar priority: High.

- Web page: https://patchblox.com/security/cve/CVE-2020-29363
- Priority: High
- CVSS: 7.5 (Moderate)
- EPSS: 0.0330
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Dec 16, 2020

## Description

The p11-kit packages provide a mechanism to manage PKCS#11 modules. The p11-kit-trust subpackage includes a PKCS#11 trust module that provides certificate anchors and black lists based on configuration files.  The following packages have been upgraded to a later upstream version: p11-kit (0.23.22). (BZ#1887853)  Security Fix(es):  * p11-kit: integer overflow when allocating memory for arrays or attributes and object identifiers (CVE-2020-29361)  * p11-kit: out-of-bounds read in p11_rpc_buffer_get_byte_array function in rpc-message.c (CVE-2020-29362)  * p11-kit: out-of-bounds write in p11_rpc_buffer_get_byte_array_value function in rpc-message.c (CVE-2020-29363)  For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.  Additional Changes:  For detailed information on changes in this release, see the Red Hat Enterprise Linux 8.4 Release Notes linked from the References section.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | libp11-kit0 Ubuntu 18.04.6 LTS (bionic) | 0.23.9-2ubuntu0.1 | [libp11-kit0 0.23.9-2ubuntu0.1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-libp11-kit0-0.23.9-2ubuntu0.1.md) | Dec 16, 2020 |
| Linux | libp11-kit0 Ubuntu 20.04 LTS (focal) | 0.23.20-1ubuntu0.1 | [libp11-kit0 0.23.20-1ubuntu0.1](https://patchblox.com/security/data/fix/linux/ubuntu-focal-libp11-kit0-0.23.20-1ubuntu0.1.md) | Dec 16, 2020 |
| Linux | p11-kit RHEL 8 | 0:0.23.22-1.el8 | [RHSA-2021:1609](https://patchblox.com/security/data/fix/linux/rhsa-2021-1609.md) | May 18, 2021 |
| Linux | p11-kit Ubuntu 18.04.6 LTS (bionic) | 0.23.9-2ubuntu0.1 | [p11-kit 0.23.9-2ubuntu0.1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-p11-kit-0.23.9-2ubuntu0.1.md) | Dec 16, 2020 |
| Linux | p11-kit Ubuntu 20.04 LTS (focal) | 0.23.20-1ubuntu0.1 | [p11-kit 0.23.20-1ubuntu0.1](https://patchblox.com/security/data/fix/linux/ubuntu-focal-p11-kit-0.23.20-1ubuntu0.1.md) | Dec 16, 2020 |
| Linux | p11-kit ol 8 | 0:0.23.22-1.el8 | [ELSA-2021-1609](https://patchblox.com/security/data/fix/linux/elsa-2021-1609.md) | May 25, 2021 |
| Linux | p11-kit-devel RHEL 8 | 0:0.23.22-1.el8 | [RHSA-2021:1609](https://patchblox.com/security/data/fix/linux/rhsa-2021-1609.md) | May 18, 2021 |
| Linux | p11-kit-devel ol 8 | 0:0.23.22-1.el8 | [ELSA-2021-1609](https://patchblox.com/security/data/fix/linux/elsa-2021-1609.md) | May 25, 2021 |
| Linux | p11-kit-modules Ubuntu 18.04.6 LTS (bionic) | 0.23.9-2ubuntu0.1 | [p11-kit-modules 0.23.9-2ubuntu0.1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-p11-kit-modules-0.23.9-2ubuntu0.1.md) | Dec 16, 2020 |
| Linux | p11-kit-modules Ubuntu 20.04 LTS (focal) | 0.23.20-1ubuntu0.1 | [p11-kit-modules 0.23.20-1ubuntu0.1](https://patchblox.com/security/data/fix/linux/ubuntu-focal-p11-kit-modules-0.23.20-1ubuntu0.1.md) | Dec 16, 2020 |
| Linux | p11-kit-server RHEL 8 | 0:0.23.22-1.el8 | [RHSA-2021:1609](https://patchblox.com/security/data/fix/linux/rhsa-2021-1609.md) | May 18, 2021 |
| Linux | p11-kit-server ol 8 | 0:0.23.22-1.el8 | [ELSA-2021-1609](https://patchblox.com/security/data/fix/linux/elsa-2021-1609.md) | May 25, 2021 |
| Linux | p11-kit-trust RHEL 8 | 0:0.23.22-1.el8 | [RHSA-2021:1609](https://patchblox.com/security/data/fix/linux/rhsa-2021-1609.md) | May 18, 2021 |
| Linux | p11-kit-trust ol 8 | 0:0.23.22-1.el8 | [ELSA-2021-1609](https://patchblox.com/security/data/fix/linux/elsa-2021-1609.md) | May 25, 2021 |

---

Data as of 2026-11-08T13:06:02Z 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

Free to use with attribution: show "Data: Patchblox Patch Radar" with a link to https://patchblox.com/security/patch-radar. Terms, including what needs a written agreement: https://patchblox.com/security/patch-radar/use-the-data

Product names, logos and trademarks shown on Patch Radar belong to their respective owners. They are used only to identify the software each security fix applies to and to help readers find their platform. Their use does not imply any affiliation with, or endorsement by, those owners, and Patchblox is not affiliated with any of them.