Description
PCRE2 before 10.48 allows a pcre2_dfa_match out-of-bounds write because reuse of a cached workspace block, in a recursive DFA matching workspace, lacks a size check (even though a newly allocated block, for the same purpose, does have a size check). This outcome requires an attacker-controlled regular expression, or a recursive pattern in conjunction with a small heap limit (this can be set through the API).
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| PCRE | PCRE2 | 10.32 – < 10.48 | 10.48 |
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 | pcre2 | 10.48-1 | — |
| Debian 13 | pcre2 | 10.46-1~deb13u2 | — |
| Debian 12 | pcre2 | 10.42-1+deb12u1 | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 26.10 | pcre2 | 10.46-1ubuntu1 | USN-8974-1 |
| Ubuntu 26.04 LTS | pcre2 | 10.46-1ubuntu0.1 | USN-8974-1 |
| Ubuntu 24.04 LTS | pcre2 | 10.42-4ubuntu2.2 | USN-8974-1 |
| Ubuntu 22.04 LTS | pcre2 | 10.39-3ubuntu0.2 | USN-8974-1 |
Show 3 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro 20.04 LTS | pcre2 | 10.34-7ubuntu0.1+esm1 | USN-8974-1 |
| Ubuntu Pro 18.04 LTS | pcre2 | 10.31-2ubuntu0.1~esm2 | USN-8974-1 |
| Ubuntu Pro 16.04 LTS | pcre2 | 10.21-1ubuntu0.1~esm1 | USN-8974-1 |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 10 | mariadb11.8 +14 | 3:11.8.8-2.el10_2 | RHSA-2026:84799 |
| RHEL 10 | pcre2 +6 | 10.44-1.5.el10_2 | RHSA-2026:81522 |
| RHEL 9 | pcre2 +5 | 10.40-7.el9_8 | RHSA-2026:81532 |
| RHEL 8 | pcre2 +4 | 10.32-4.el8_10 | RHSA-2026:81613 |
Show 4 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 9.6 EUS | pcre2 +5 | 10.40-6.el9_6.1 | RHSA-2026:82845 |
| RHEL 9.4 E4S | pcre2 +4 | 10.40-5.el9_4.1 | RHSA-2026:82875 |
| RHEL 9.2 E4S | pcre2 +4 | 10.40-2.el9_2.1 | RHSA-2026:82876 |
| Red Hat Hardened Images 1 | pcre2 +6 | 10.48-0.1.hum1 | RHSA-2026:67534 |
AlmaLinux
Errata ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| AlmaLinux 10 | mariadb11.8 +14 | 3:11.8.8-2.el10_2.alma.2 | ALSA-2026:84799 |
| AlmaLinux 10 | pcre2 +6 | 10.44-1.5.el10_2 | ALSA-2026:81522 |
| AlmaLinux 9 | pcre2 +5 | 10.40-7.el9_8 | ALSA-2026:81532 |
| AlmaLinux 8 | pcre2 +4 | 10.32-4.el8_10 | ALSA-2026:81613 |
Rocky Linux
Errata ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Rocky Linux 10 | mariadb11.8 | 3:11.8.8-2.el10_2 | RLSA-2026:84799 |
| Rocky Linux 10 | pcre2 | 10.44-1.5.el10_2 | RLSA-2026:81522 |
| Rocky Linux 9 | pcre2 | 10.40-7.el9_8 | RLSA-2026:81532 |
| Rocky Linux 8 | pcre2 | 10.32-4.el8_10 | RLSA-2026:81613 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 15 SP7 | pcre2 | 10.42-150600.3.3.1 | SUSE-SU-2026:4241-1 |
| SLES 15 SP6 | pcre2 | 10.42-150600.3.3.1 | SUSE-SU-2026:4241-1 |
| SLES 15 SP5 | pcre2 | 10.39-150400.4.12.1 | SUSE-SU-2026:4458-1 |
| SLES 15 SP4 | pcre2 | 10.39-150400.4.12.1 | SUSE-SU-2026:4458-1 |
| SLES 12 SP5 | pcre2 | 10.34-1.16.1 | SUSE-SU-2026:4201-1 |
Show 13 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES for SAP 16.0 | pcre2 | 10.45-160000.4.1 | SUSE-SU-2026:23906-1 |
| SLES for SAP 15 SP6 | pcre2 | 10.42-150600.3.3.1 | SUSE-SU-2026:4241-1 |
| SLES for SAP 15 SP5 | pcre2 | 10.39-150400.4.12.1 | SUSE-SU-2026:4458-1 |
| SLES for SAP 15 SP4 | pcre2 | 10.39-150400.4.12.1 | SUSE-SU-2026:4458-1 |
| SLES 16.0 | pcre2 | 10.45-160000.4.1 | SUSE-SU-2026:23906-1 |
| SLE Micro 6.2 | pcre2 | 10.45-160000.4.1 | SUSE-SU-2026:23891-1 |
| SLE Micro 6.1 | pcre2 | 10.42-slfo.1.1_2.1 | SUSE-SU-2026:23740-1 |
| SLE Micro 6.0 | pcre2 | 10.42-3.1 | SUSE-SU-2026:23840-1 |
| SLE Micro 5.5 | pcre2 | 10.39-150400.4.12.1 | SUSE-SU-2026:4458-1 |
| SLE Micro 5.4 | pcre2 | 10.39-150400.4.12.1 | SUSE-SU-2026:4458-1 |
| SLE Micro 5.3 | pcre2 | 10.39-150400.4.12.1 | SUSE-SU-2026:4458-1 |
| SLE HPC 15 SP5 | pcre2 | 10.39-150400.4.12.1 | SUSE-SU-2026:4458-1 |
| SLE HPC 15 SP4 | pcre2 | 10.39-150400.4.12.1 | SUSE-SU-2026:4458-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Leap 16.0 | pcre2 | 10.45-160000.4.1 | openSUSE-SU-2026:21938-1 |
Alpine
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.24 | pcre2 | 10.48-r0 | — |
| Alpine v3.23 | pcre2 | 10.48-r0 | — |
| Alpine v3.22 | pcre2 | 10.46-r1 | — |
| Alpine v3.21 | pcre2 | 10.43-r1 | — |
Amazon Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Amazon Linux 2023 | pcre2 +6 | 10.40-1.amzn2023.0.5 | ALAS2023-2026-3269 |
Azure Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Azure Linux 3 | pcre2 | 10.48-1 | — |
Oracle Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Oracle Linux 10 | mariadb11.8 +14 | 3:11.8.8-2.el10_2 | ELSA-2026-84799 |
| Oracle Linux 10 | pcre2 +6 | 10.44-1.5.0.1.el10_2 | ELSA-2026-81522 |
| Oracle Linux 9 | pcre2 +5 | 10.40-7.0.1.el9_8 | ELSA-2026-81532 |
| Oracle Linux 8 | pcre2 +4 | 10.32-4.el8_10 | ELSA-2026-81613 |
Advisories 31
- WID-SEC-2026-3334 PCRE2 (Perl Compatible Regular Expressions): Mehrere Schwachstellen BSI CERT-Bund (WID) · Nov 11, 2026
- USN-8974-1 pcre2 vulnerabilities Ubuntu Security Notices (USN) · Nov 4, 2026
- ALSA-2026:81532 Important: pcre2 security update AlmaLinux Security Advisories · Oct 29, 2026
- ALSA-2026:81522 Important: pcre2 security update AlmaLinux Security Advisories · Oct 29, 2026
- ALSA-2026:84799 Important: mariadb11.8 security update AlmaLinux Security Advisories · Oct 29, 2026
- ALSA-2026:81613 Important: pcre2 security update AlmaLinux Security Advisories · Oct 29, 2026
- ALAS2023-2026-3269 Important: pcre2 security update (Amazon Linux 2023) Amazon Linux Security Center (ALAS) · Oct 26, 2026
- RLSA-2026:84799 Important: mariadb11.8 security update Rocky Linux Security Advisories · Oct 20, 2026
- RHSA-2026:84799 Red Hat Security Advisory: mariadb11.8 security update Red Hat Security Advisories (RHSA) · Oct 20, 2026
- RHSA-2026:82875 Red Hat Security Advisory: pcre2 security update Red Hat Security Advisories (RHSA) · Oct 20, 2026
- RHSA-2026:82876 Red Hat Security Advisory: pcre2 security update Red Hat Security Advisories (RHSA) · Oct 20, 2026
- RHSA-2026:82845 Red Hat Security Advisory: pcre2 security update Red Hat Security Advisories (RHSA) · Oct 20, 2026
- RHSA-2026:81613 Red Hat Security Advisory: pcre2 security update Red Hat Security Advisories (RHSA) · Oct 20, 2026
- RHSA-2026:81532 Red Hat Security Advisory: pcre2 security update Red Hat Security Advisories (RHSA) · Oct 20, 2026
- RHSA-2026:81522 Red Hat Security Advisory: pcre2 security update Red Hat Security Advisories (RHSA) · Oct 20, 2026
- RHSA-2026:67534 Red Hat Security Advisory: Red Hat Hardened Images RPMs Security Update Red Hat Security Advisories (RHSA) · Oct 20, 2026
- ELSA-2026-84799 Important: mariadb11.8 security update (Oracle Linux 10) Oracle Linux Security Advisories (ELSA) · Oct 19, 2026
- RLSA-2026:81522 Important: pcre2 security update Rocky Linux Security Advisories · Oct 14, 2026
- RLSA-2026:81532 Important: pcre2 security update Rocky Linux Security Advisories · Oct 14, 2026
- RLSA-2026:81613 Important: pcre2 security update Rocky Linux Security Advisories · Oct 14, 2026
- ELSA-2026-81522 Important: pcre2 security update (Oracle Linux 10) Oracle Linux Security Advisories (ELSA) · Oct 13, 2026
- ELSA-2026-81532 Important: pcre2 security update (Oracle Linux 9) Oracle Linux Security Advisories (ELSA) · Oct 13, 2026
- ELSA-2026-81613 Important: pcre2 security update (Oracle Linux 8) Oracle Linux Security Advisories (ELSA) · Oct 12, 2026
- SUSE-SU-2026:4458-1 Security update for pcre2 SUSE / openSUSE Security Updates · Oct 5, 2026
- SUSE-SU-2026:23906-1 Security update for pcre2 SUSE / openSUSE Security Updates · Sep 30, 2026
- SUSE-SU-2026:23891-1 Security update for pcre2 SUSE / openSUSE Security Updates · Sep 30, 2026
- SUSE-SU-2026:23840-1 Security update for pcre2 SUSE / openSUSE Security Updates · Sep 27, 2026
- SUSE-SU-2026:23740-1 Security update for pcre2 SUSE / openSUSE Security Updates · Sep 27, 2026
- openSUSE-SU-2026:21938-1 Security update for pcre2 SUSE / openSUSE Security Updates · Sep 25, 2026
- SUSE-SU-2026:4241-1 Security update for pcre2 SUSE / openSUSE Security Updates · Sep 17, 2026
- SUSE-SU-2026:4201-1 Security update for pcre2 SUSE / openSUSE Security Updates · Sep 16, 2026