Issued at: 2026-10-14
Updated at: 2026-10-14
Advisory content derived from Red Hat RHSA-2026:81522, © Red Hat, Inc., used under CC BY 4.0, with modifications.
Synopsis
Important: pcre2 security update
Description
The pcre2 package contains a new generation of the Perl Compatible Regular Expression libraries for implementing regular expression pattern matching using the same syntax and semantics as Perl.
Security Fix(es):
* pcre2: PCRE2: Out-of-bounds write allows arbitrary code execution via crafted regular expressions (CVE-2026-86145)
* PCRE2: PCRE2: Out-of-bounds read via invalid UTF data during JIT fallback (CVE-2026-89156)
* pcre2: PCRE2: Out-of-bounds write via large pattern input (CVE-2026-89157)
* pcre2: PCRE2: Denial of Service via out-of-bounds read during invalid UTF matching (CVE-2026-89160)
* PCRE2: PCRE2: Out-of-bounds write via integer overflow on 32-bit platforms (CVE-2026-89158)
* pcre2: PCRE2: Memory corruption vulnerability in pcre2_jit_match (CVE-2026-89161)
* pcre2: pcre2: Out-of-bounds write via crafted regular expression (CVE-2026-103111)
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.