Description
A vulnerability was found in the pthread_create() function in libcap. This issue may allow a malicious actor to use cause __real_pthread_create() to return an error, which can exhaust the process memory.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| — | libcap | NA | — |
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | libcap2 | 1:2.66-4 | — |
| Debian 13 | libcap2 | 1:2.66-4 | — |
| Debian 12 | libcap2 | 1:2.66-4 | — |
| Debian 11 | libcap2 | 1:2.44-1+deb11u1 | DLA-4092-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 24.04 LTS | libcap2 | 1:2.66-4ubuntu1 | — |
| Ubuntu 22.04 LTS | libcap2 | 1:2.44-1ubuntu0.22.04.1 | USN-6166-1 |
| Ubuntu 20.04 LTS | libcap2 | 1:2.32-1ubuntu0.1 | USN-6166-1 |
Show 3 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro 18.04 LTS | libcap2 | No fix yet | — |
| Ubuntu Pro 16.04 LTS | libcap2 | No fix yet | — |
| Ubuntu Pro 14.04 LTS | libcap2 | No fix yet | — |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 9 | libcap +1 | 2.48-9.el9_2 | RHSA-2023:5071 |
| RHEL 8 | libcap +1 | 2.48-5.el8_8 | RHSA-2023:4524 |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 8.6 EUS | libcap +1 | 2.48-4.el8_6 | RHSA-2023:7400 |
AlmaLinux
Errata ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| AlmaLinux 9 | libcap +1 | 2.48-9.el9_2 | ALSA-2023:5071 |
| AlmaLinux 8 | libcap +1 | 2.48-5.el8_8 | ALSA-2023:4524 |
Rocky Linux
Errata ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Rocky Linux 8 | libcap | 2.48-5.el8_8 | RLSA-2023:4524 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 15 SP5 | libcap | 2.63-150400.3.3.1 | SUSE-SU-2023:2765-1 |
| SLES 15 SP4 | libcap | 2.63-150400.3.3.1 | SUSE-SU-2023:2765-1 |
Show 2 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLE Micro 5.4 | libcap | 2.63-150400.3.3.1 | SUSE-SU-2023:2765-1 |
| SLE Micro 5.3 | libcap | 2.63-150400.3.3.1 | SUSE-SU-2023:2765-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Leap 15.5 | libcap | 2.63-150400.3.3.1 | SUSE-SU-2023:2765-1 |
| openSUSE Leap 15.4 | libcap | 2.63-150400.3.3.1 | SUSE-SU-2023:2765-1 |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Leap Micro 5.3 | libcap | 2.63-150400.3.3.1 | SUSE-SU-2023:2765-1 |
Alpine
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.17 | libcap | 2.66-r1 | — |
| Alpine v3.16 | libcap | 2.64-r1 | — |
| Alpine v3.15 | libcap | 2.61-r1 | — |
Amazon Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Amazon Linux 2023 | libcap +2 | 2.48-2.amzn2023.0.3 | ALAS2023-2023-195 |
| Amazon Linux 2 | libcap +2 | 2.54-1.amzn2.0.2 | ALAS2-2023-2136 |
Azure Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Azure Linux 2 (CBL-Mariner) | libcap | 2.60-2 | — |
Oracle Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Oracle Linux 9 | libcap +1 | 2.48-9.el9_2 | ELSA-2023-5071 |
| Oracle Linux 8 | libcap +1 | 2.48-5.el8_8 | ELSA-2023-4524 |
Advisories 16
- ALSA-2023:5071 Moderate: libcap security update AlmaLinux Security Advisories · Oct 29, 2026
- ALSA-2023:4524 Moderate: libcap security update AlmaLinux Security Advisories · Oct 29, 2026
- RHSA-2023:5071 Red Hat Security Advisory: libcap security update Red Hat Security Advisories (RHSA) · Jun 26, 2026
- USN-6166-1 libcap2 vulnerabilities Ubuntu Security Notices (USN) · Apr 27, 2026
- RHSA-2023:7400 Red Hat Security Advisory: libcap security update Red Hat Security Advisories (RHSA) · Mar 18, 2026
- DLA-4092-1 libcap2 - security update Debian Security (DSA / DLA) · Mar 9, 2026
- RLSA-2023:4524 Moderate: libcap security update Rocky Linux Security Advisories · Feb 5, 2026
- SUSE-SU-2023:2765-1 Security update for libcap SUSE / openSUSE Security Updates · Feb 4, 2026
- RHSA-2023:4524 Red Hat Security Advisory: libcap security update Red Hat Security Advisories (RHSA) · Dec 3, 2025
- WID-SEC-2023-2017 Red Hat Enterprise Linux (libcap): Mehrere Schwachstellen BSI CERT-Bund (WID) · Mar 26, 2025
- WID-SEC-2024-1307 Red Hat OpenShift Service Mesh Containers: Mehrere Schwachstellen BSI CERT-Bund (WID) · Feb 5, 2025
- WID-SEC-2023-2902 IBM Security Guardium: Mehrere Schwachstellen BSI CERT-Bund (WID) · Nov 14, 2023
- ELSA-2023-5071 Moderate: libcap security update (Oracle Linux 9) Oracle Linux Security Advisories (ELSA) · Sep 13, 2023
- ELSA-2023-4524 Moderate: libcap security update (Oracle Linux 8) Oracle Linux Security Advisories (ELSA) · Aug 9, 2023
- ALAS2-2023-2136 Low: libcap security update (Amazon Linux 2) Amazon Linux Security Center (ALAS) · Jul 19, 2023
- ALAS2023-2023-195 Low: libcap security update (Amazon Linux 2023) Amazon Linux Security Center (ALAS) · Jun 7, 2023