CVE-2026-89161: Memory corruption vulnerability in pcre2_jit_match
CVE-2026-89161 key facts
- CISA KEV
- Not listed (catalogue checked )
- Highest advisory rating
- Critical
- CVSS base score
- 7.4 (Red Hat)
- CVSS vector
CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H(Red Hat)
- Weakness
- CWE-1341
- Fixed releases
- Red Hat: pcre2-0:10.44-1.5.el10_2, pcre2-0:10.40-7.el9_8, pcre2-0:10.40-2.el9_2.1, pcre2-0:10.40-5.el9_4.1, pcre2-0:10.40-6.el9_6.1, pcre2-main-10.48-0.1.hum1 and 12 more in the advisory
- Listed by VulniPulse
- Record changed
Ratings, versions and fixes are quoted from the vendor advisories that cover only CVE-2026-89161; each belongs to its advisory, not to every product listed. How records are collected and checked.
How do I fix CVE-2026-89161?
Upgrade to a fixed release named by the vendor:
- Red Hat: pcre2-0:10.44-1.5.el10_2, pcre2-0:10.40-7.el9_8, pcre2-0:10.40-2.el9_2.1, pcre2-0:10.40-5.el9_4.1, pcre2-0:10.40-6.el9_6.1, pcre2-main-10.48-0.1.hum1
- Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability. (Red Hat)
Vendor advisories for CVE-2026-89161
Red Hat
1 advisory- Advisory severityHigh7.4
High [CVE-2026-89161] Memory corruption vulnerability in pcre2_jit_match
CVE-2026-89161Source published Source updated
In PCRE2 before 10.48, pcre2_jit_match mishandles a previously copied subject being passed in as a context. An incorrect free operation can occur. A flaw was found in PCRE2, a library for processing regular expressions. The `pcre2_jit_match` function, which handles just-in-time (JIT) compilation for regular expressions, incorrectly manages memory when processing certain inputs. This memory corruption vulnerability could allow a local attacker to cause the application to crash, leading to a denial of service, or potentially execute unauthorized code. This is an Important memory corruption vulnerability in PCRE2's JIT compiler. The high attack complexity and local attack vector reduce the overall risk, but the widespread use of PCRE2 and the potential for severe impact warrant the…
- Affected products in this advisory
- Red Hat Enterprise Linux 10
- Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions
- Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions
- Red Hat Enterprise Linux 9.6 Extended Update Support
8 more entries in the full advisory.
- Source-reported affected versions
- < 10.48
- Source-reported fixed versions
- pcre2-0:10.44-1.5.el10_2
- pcre2-0:10.40-7.el9_8
- pcre2-0:10.40-2.el9_2.1
- pcre2-0:10.40-5.el9_4.1
14 more entries in the full advisory.
- Mitigation guidance
- Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability.
Veeam
1 advisory- Advisory severityCritical
Critical [CVE-2020-14040 +110] List of Security Fixes and Improvements in Veeam Kasten for Kubernetes
KB4825Source published
This bulletin covers 111 CVEs. The products, versions, score and guidance below describe the bulletin; check its source for applicability to this specific CVE.
List of Security Fixes and Improvements in Veeam Kasten for Kubernetes KB ID: 4825 Product: Kasten K10 by Veeam | 3 | 5 | 5.5 | 6 | 6.5 Published: 2026-03-02 Last Modified: Purpose This article aims to provide our customers' security and compliance teams with detailed information on security improvements. - Veeam Kasten for Kubernetes — Release Notes - Also resolves 13 Medium and 7 Low severity CVEs in the same and other packages. - Upgraded the frontend's bundled JavaScript dependencies to resolve GHSA-g2v6-rqmx-r4w6 in @vue/server-renderer (High). - Upgraded to latest UBI base image to resolve multiple CVEs in base OS packages. - Updated the Go runtime to resolve additional upstream Go CVEs. - Updated the bundled Prometheus Helm chart to resolve security issues. - Upgraded the…
- Related products — impact not confirmed
- No product details extracted. Check the source bulletin.
- Source-reported affected versions
- Affected-version details not available in this record.
- Source-reported fixed versions
- 8.5.10
- 8.5.5
- 1.26.1
- 8.5.3
20 more entries in the full advisory.
- Mitigation guidance
- List of Security Fixes and Improvements in Veeam Kasten for Kubernetes KB ID: 4825 Product: Veeam Kasten for Kubernetes | 7 | 7.5 | 8 | 8.5 | 9 Kasten K10 by Veeam | 3 | 5 | 5.5 | 6 | 6.5 Published: 2026-03-02 Last Modified: 2026-11-05 Purpose This article describes all security-related fixes and improvements introduced in each release or update of Veeam Kasten for Kubernetes.
- It is recommended to upgrade Veeam Kasten and to refresh the token by manually logging out.
- Mitigation: Configure a bucket-level Default Object Lock retention so the object store stamps new objects at write time, or upgrade to Kasten 8.5.10.
- Veeam Kasten for Kubernetes 8.5.5 Upgrade to Go 1.26.1 to address CVE-2026-25679 and CVE-2026-27142 Updated the UBI base image to address CVE-2026-4111 Veeam Kasten for Kubernetes 8.5.3 Upgrade to Go 1.25.7 to address CVE-2025-61732.
4 more entries in the full advisory.
- Workarounds
- Veeam Kasten for Kubernetes 8.0.14 Improved logging security for specific block mode datamover upload Pod invocations.
References
More Red Hat advisories
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