In PCRE2 before 10.48, pcre2_jit_match mishandles a previously copied subject being…
Key facts
- Attack vector
- Local
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- Partial Red Hat: 29 fixed, 5 without a fix
Attack profile from CVSS 3.1 · NVD. Fix status from CNA and Red Hat.
Summary
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.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Total
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| PCRE | PCRE2 | before 10.48 | 10.48 | Patch available | CNA |
- PCRE2 VendorPCRE Affected before 10.48 Fixed in 10.48 Patch available CNA
Remediation
- Fix · CNA PCRE2 (PCRE) Fixed in 10.48
Red Hat 44 advisories
- RHSA-2026:95264 Released 2026-11-04 · Red Hat rating CriticalCost Management Metrics Operator Update
- Cost Management 4 registry.redhat.io/costmanagement/costmanagement-metrics-rhel9-operator
- RHSA-2026:94476 Released 2026-11-03 · Red Hat rating CriticalRed Hat AI Base Images 3.0.8 (CUDA)
- Red Hat OpenShift AI 3.0 registry.redhat.io/rhai/base-image-cuda-rhel9
- RHSA-2026:94474 Released 2026-11-03 · Red Hat rating CriticalRed Hat AI Base Images 3.5.6 (CUDA 12.9)
- Red Hat OpenShift AI 3.5 registry.redhat.io/rhai/base-image-cuda-12.9-rhel9
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- RHSA-2026:86205 Released 2026-10-20 · Red Hat rating Importantpcre2 security update
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- Red Hat Enterprise Linux BaseOS (v. 10) pcre2-10.44-1.5.el10_2, pcre2-syntax-10.44-1.5.el10_2
- Red Hat Enterprise Linux CodeReady Linux Builder (v. 10) pcre2-static-10.44-1.5.el10_2, pcre2-tools-10.44-1.5.el10_2
- RHSA-2026:67534 Released 2026-09-15 · Red Hat rating ImportantRed Hat Hardened Images RPMs Security Update
- Red Hat Hardened Images pcre2-10.48-0.1.hum1@aarch64, pcre2-10.48-0.1.hum1@src, pcre2-10.48-0.1.hum1@x86_64 +12
Fixed in the same release
Records fixed by the same vendor advisory or release, as the CNA lists them.
- Release ·
PCRE PCRE2 10.48
6 records Highest priority Priority HIGH 1 HIGH, 1 MEDIUM, 4 LOW
Other records, highest priority first
- TI-2026-60391 Integer overflow in PCRE2Priority HIGH 66
- TI-2026-60393 Out-of-bounds read in PCRE2Priority MEDIUM 62
- TI-2026-60392 PCRE2 before 10.48, on 32-bit platforms, has a pcre2_compile_32 integer overflow and resultant out-of-bounds write.Priority LOW 28
Vendor assessments
Red Hat
Red Hat rating: Important. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Enterprise Linux 10 | Affected | No fix yet |
| Red Hat Enterprise Linux 9 | Affected | No fix yet |
| Red Hat OpenShift AI (RHOAI) | Affected | — |
| Red Hat OpenShift Container Platform 4 | Affected | No fix yet |
| Red Hat OpenShift Container Platform 5 | Affected | No fix yet |
| Cost Management 4 | Fixed | RHSA-2026:95264 |
| Red Hat CodeReady Linux Builder EUS (v.9.6) | Fixed | RHSA-2026:82845 |
| Red Hat Cost Management On-Premise 1 | Fixed | RHSA-2026:87400 |
| Red Hat Enterprise Linux AppStream (v. 10) | Fixed | RHSA-2026:81522, RHSA-2026:84799 |
| Red Hat Enterprise Linux AppStream (v. 9) | Fixed | RHSA-2026:81532 |
| Red Hat Enterprise Linux AppStream E4S (v.9.2) | Fixed | RHSA-2026:82876 |
| Red Hat Enterprise Linux AppStream E4S (v.9.4) | Fixed | RHSA-2026:82875 |
| Red Hat Enterprise Linux AppStream EUS (v. 10.0) | Fixed | RHSA-2026:86205 |
| Red Hat Enterprise Linux AppStream EUS (v.9.6) | Fixed | RHSA-2026:82845 |
| Red Hat Enterprise Linux BaseOS (v. 10) | Fixed | RHSA-2026:81522 |
| Red Hat Enterprise Linux BaseOS (v. 9) | Fixed | RHSA-2026:81532 |
| Red Hat Enterprise Linux BaseOS E4S (v.9.2) | Fixed | RHSA-2026:82876 |
| Red Hat Enterprise Linux BaseOS E4S (v.9.4) | Fixed | RHSA-2026:82875 |
| Red Hat Enterprise Linux BaseOS EUS (v. 10.0) | Fixed | RHSA-2026:86205 |
| Red Hat Enterprise Linux BaseOS EUS (v.9.6) | Fixed | RHSA-2026:82845 |
| Red Hat Enterprise Linux CodeReady Linux Builder (v. 10) | Fixed | RHSA-2026:81522 |
| Red Hat Enterprise Linux CodeReady Linux Builder (v. 9) | Fixed | RHSA-2026:81532 |
| Red Hat Enterprise Linux CodeReady Linux Builder EUS (v. 10.0) | Fixed | RHSA-2026:86205 |
| Red Hat Hardened Images | Fixed | RHSA-2026:67534 |
| Red Hat OpenShift AI 3.0 | Fixed | RHSA-2026:91206, RHSA-2026:91219, RHSA-2026:91232, RHSA-2026:91236, RHSA-2026:91243, RHSA-2026:94459, RHSA-2026:94476 |
| Red Hat OpenShift AI 3.4 | Fixed | RHSA-2026:91217, RHSA-2026:91218, RHSA-2026:91233, RHSA-2026:91234, RHSA-2026:91235, RHSA-2026:91241, RHSA-2026:91244, RHSA-2026:91245, RHSA-2026:91248, RHSA-2026:94468 |
| Red Hat OpenShift AI 3.5 | Fixed | RHSA-2026:91202, RHSA-2026:91204, RHSA-2026:91207, RHSA-2026:91224, RHSA-2026:91237, RHSA-2026:91238, RHSA-2026:91242, RHSA-2026:91246, RHSA-2026:91249, RHSA-2026:94474 |
| Red Hat OpenShift Container Platform 4.14 | Fixed | RHSA-2026:89838 |
| Red Hat OpenShift Container Platform 4.18 | Fixed | RHSA-2026:89725 |
| Red Hat OpenShift Container Platform 4.19 | Fixed | RHSA-2026:89651 |
| Red Hat OpenShift Container Platform 4.20 | Fixed | RHSA-2026:89333 |
| Red Hat OpenShift Container Platform 4.21 | Fixed | RHSA-2026:89232 |
| Red Hat OpenShift Container Platform 4.22 | Fixed | RHSA-2026:89197 |
| Red Hat Update Infrastructure 5 | Fixed | RHSA-2026:82939 |
Not affected: 9 products
- Cost Management 4
- Red Hat Enterprise Linux 10
- Red Hat Enterprise Linux 7
- Red Hat Enterprise Linux 8
- Red Hat Enterprise Linux 9
- Red Hat Enterprise Linux AppStream E4S (v.9.2)
- Red Hat Enterprise Linux BaseOS E4S (v.9.2)
- Red Hat Hardened Images
- Red Hat OpenShift AI (RHOAI)
Timeline
- 2026-10-02 Threatist record created from CVE-2026-89161
- 2026-10-03 Alias added: GHSA-7g92-94jm-fx5f
- 2026-10-12 Affected versions changed · Red Hat
- 2026-10-13 Fix available: RHSA-2026:81522 · Red Hat
- 2026-10-13 Fix available: RHSA-2026:81532 · Red Hat
- 2026-10-13 Fix available: Red Hat Enterprise Linux AppStream (v. 10), Red Hat Enterprise Linux AppStream (v. 9), Red Hat Enterprise Linux BaseOS (v. 10) +3 · Red Hat
- 2026-10-14 Fix available: RHSA-2026:82845 · Red Hat
- 2026-10-14 Fix available: RHSA-2026:82876 · Red Hat
- 2026-10-15 Fix available: RHSA-2026:82875 · Red Hat
- 2026-10-16 Fix available: RHSA-2026:82939 · Red Hat
- 2026-10-16 Fix available: Red Hat CodeReady Linux Builder EUS (v.9.6), Red Hat Enterprise Linux AppStream E4S (v.9.2), Red Hat Enterprise Linux AppStream E4S (v.9.4) +5 · Red Hat
- 2026-10-20 Fix available: RHSA-2026:84799 · Red Hat
- 2026-10-20 Affected versions changed · Red Hat
- 2026-10-21 Fix available: RHSA-2026:86205 · Red Hat
- 2026-10-21 Fix available: Red Hat Enterprise Linux AppStream EUS (v. 10.0), Red Hat Enterprise Linux BaseOS EUS (v. 10.0), Red Hat Enterprise Linux CodeReady Linux Builder EUS (v. 10.0) · Red Hat
- 2026-10-22 Fix available: RHSA-2026:87400 · Red Hat
- 2026-10-23 Fix available: Red Hat Cost Management On-Premise 1 · Red Hat
- 2026-10-27 Fix available: Red Hat OpenShift Container Platform 4.14, Red Hat OpenShift Container Platform 4.18 · Red Hat
- 2026-10-28 Fix available: Red Hat OpenShift Container Platform 4.22 · Red Hat
- 2026-10-28 Fix available: Red Hat OpenShift Container Platform 4.19, Red Hat OpenShift Container Platform 4.20 · Red Hat
- 2026-10-29 Fix available: Red Hat OpenShift Container Platform 4.21 · Red Hat
- 2026-10-29 Fix available: RHSA-2026:89838 · Red Hat
- 2026-10-29 Fix available: RHSA-2026:89232 · Red Hat
- 2026-10-29 Fix available: RHSA-2026:89651 · Red Hat
- 2026-10-29 Fix available: RHSA-2026:89197 · Red Hat
- 2026-10-29 Fix available: RHSA-2026:89725 · Red Hat
- 2026-10-29 Fix available: RHSA-2026:89333 · Red Hat
- 2026-10-30 Fix available: RHSA-2026:91202 · Red Hat
- 2026-10-30 Fix available: RHSA-2026:91204 · Red Hat
- 2026-10-30 Fix available: RHSA-2026:91206 · Red Hat
- 2026-10-30 Fix available: RHSA-2026:91207 · Red Hat
- 2026-10-30 Fix available: RHSA-2026:91217 · Red Hat
- 2026-10-30 Fix available: RHSA-2026:91219 · Red Hat
- 2026-10-30 Fix available: RHSA-2026:91224 · Red Hat
- 2026-10-30 Fix available: RHSA-2026:91233 · Red Hat
- 2026-10-30 Fix available: RHSA-2026:91232 · Red Hat
- 2026-10-30 Fix available: RHSA-2026:91218 · Red Hat
- 2026-10-30 Fix available: RHSA-2026:91235 · Red Hat
- 2026-10-30 Fix available: RHSA-2026:91234 · Red Hat
- 2026-10-30 Fix available: RHSA-2026:91241 · Red Hat
- 2026-10-30 Fix available: RHSA-2026:91237 · Red Hat
- 2026-10-30 Fix available: RHSA-2026:91238 · Red Hat
- 2026-10-30 Fix available: RHSA-2026:91242 · Red Hat
- 2026-10-30 Fix available: RHSA-2026:91236 · Red Hat
- 2026-10-30 Fix available: RHSA-2026:91245 · Red Hat
- 2026-10-30 Fix available: RHSA-2026:91246 · Red Hat
- 2026-10-30 Fix available: RHSA-2026:91243 · Red Hat
- 2026-10-30 Fix available: RHSA-2026:91244 · Red Hat
- 2026-10-30 Fix available: RHSA-2026:91248 · Red Hat
- 2026-10-30 Fix available: RHSA-2026:91249 · Red Hat
- 2026-10-30 Fix available: Red Hat OpenShift AI 3.0, Red Hat OpenShift AI 3.4, Red Hat OpenShift AI 3.5 · Red Hat
- 2026-10-30 Affected versions changed · Red Hat
- 2026-11-03 Fix available: RHSA-2026:94459 · Red Hat
- 2026-11-03 Fix available: RHSA-2026:94468 · Red Hat
- 2026-11-03 Affected versions changed · Red Hat
- 2026-11-04 Fix available: RHSA-2026:94474 · Red Hat
- 2026-11-04 Fix available: RHSA-2026:94476 · Red Hat
- 2026-11-04 Affected versions changed · Red Hat
- 2026-11-05 Fix available: Cost Management 4 · Red Hat
- 2026-11-06 Fix available: RHSA-2026:95264 · Red Hat
- 2026-11-06 Affected versions changed · Red Hat
References
More Pcre2 vulnerabilities
- TI-2022-19872 Integer overflow vulnerability in pcre2test before 10.41 allows attackers to cause a… CVSS 3.1HIGH 7.5
- TI-2025-35893 PCRE2: heap-buffer-overflow read in match_ref due to missing boundary restoration in SCS CVSS 4.0MEDIUM 6.9
- TI-2026-60391 Integer overflow in PCRE2 CVSS 3.1HIGH 7.4
- TI-2026-60393 Out-of-bounds read in PCRE2 CVSS 3.1MEDIUM 6.5
- TI-2015-02839 Heap-based buffer overflow in PCRE 8.34 through 8.37 and PCRE2 10.10 allows remote… CVSS 3.1CRITICAL 9.8
- TI-2016-02677 The compile_branch function in pcre_compile.c in PCRE 8.x before 8.39 and pcre2_compile.c… CVSS 3.0CRITICAL 9.8
Sources
- CVE-2026-89161 · CVE Program
- CVE-2026-89161 · NVD
- FIRST EPSS
- GHSA-7g92-94jm-fx5f · GitHub Advisory Database · CC BY 4.0
- CVE-2026-89161 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences