Description
A vulnerability was found in libcap. This issue occurs in the _libcap_strdup() function and can lead to an integer overflow if the input string is close to 4GiB.
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 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 | 1:2.25-1.2ubuntu0.1~esm1 | USN-6166-2 |
| Ubuntu Pro 16.04 LTS | libcap2 | 1:2.24-12ubuntu0.1~esm1 | USN-6166-2 |
| Ubuntu Pro 14.04 LTS | libcap2 | 1:2.24-0ubuntu2+esm1 | USN-6166-2 |
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 2 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 9.0 EUS | libcap +1 | 2.48-8.el9_0.1 | RHSA-2024:0436 |
| 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 |
| SLES 12 SP5 | libcap | 2.26-14.9.1 | SUSE-SU-2023:2764-1 |
Show 8 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES for SAP 12 SP5 | libcap | 2.26-14.9.1 | SUSE-SU-2023:2764-1 |
| SLE Real Time 15 SP3 | libcap | 2.26-150000.4.9.1 | SUSE-SU-2023:2956-1 |
| 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 |
| SLE Micro 5.2 | libcap | 2.26-150000.4.9.1 | SUSE-SU-2023:2956-1 |
| SLE Micro 5.1 | libcap | 2.26-150000.4.9.1 | SUSE-SU-2023:2956-1 |
| SUSE Manager Server 4.2 | libcap | 2.26-150000.4.9.1 | SUSE-SU-2023:2956-1 |
| SUSE Manager Proxy 4.2 | libcap | 2.26-150000.4.9.1 | SUSE-SU-2023:2956-1 |
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 | 2.26-150000.4.9.1 | SUSE-SU-2023:2956-1, 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 | — |
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 |
Public exploits
Exploit or proof-of-concept code for this vulnerability is publicly available, which lowers the bar for attackers. Treat it as a reason to patch sooner.
Third-party code, not reviewed by us. Public PoCs are sometimes fake or contain malware. Read the code first and run it only in an isolated lab, against systems you are authorised to test.
GitHub 1 repository
-
Pazhanivelmani/external_libcap-Android10_r33_CVE-2023-2603 ★ 0 · Nov 12, 2024
Sources: PoC-in-GitHub, Metasploit Framework, Exploit-DB — updated daily. Only links are listed; no exploit code is hosted here.
Advisories 20
- 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
- USN-6166-2 libcap2 vulnerability Ubuntu Security Notices (USN) · Jun 29, 2026
- RHSA-2023:5071 Red Hat Security Advisory: libcap security update Red Hat Security Advisories (RHSA) · Jun 26, 2026
- RHSA-2024:0436 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
- SUSE-SU-2023:2956-1 Security update for libcap SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2023:2764-1 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
- VDE-2024-073 Phoenix Contact: Multiple Vulnerabilities in PLCnext Firmware CERT@VDE · May 22, 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
- WID-SEC-2023-2679 Oracle Communications: Mehrere Schwachstellen BSI CERT-Bund (WID) · Oct 17, 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