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Updated mingw-pcre2 & pcre2 packages fix security vulnerabilities

Type: advisorySources: OSV

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). (CVE-2026-86145) PCRE2: out-of-bounds write in JIT matching with large stack allocations. (CVE-2026-103111)

Products
mingw-pcre2, pcre2
Affected versions
Not specified
Fixed versions
10.49-1.mga10
CVEs
CVE-2026-103111, CVE-2026-86145
Confirmed fixed CVEs
Not specified
Updated in this feed
28 Oct 2026, 13:01 UTC · Revision 1

Source evidence

Updated mingw-pcre2 & pcre2 packages fix security vulnerabilities

core-osv · Original source

Published 9 Oct 2026, 17:00 UTC

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). (CVE-2026-86145) PCRE2: out-of-bounds write in JIT matching with large stack allocations. (CVE-2026-103111)

osv:MGASA-2026-0478

mingw-pcre2

Fixed versions: 10.49-1.mga10

pcre2

Fixed versions: 10.49-1.mga10

Complete source record
{
  "id": "fcae86a3d66e75f729806c0d0535b9cfb00053e33f17065508c0546f05f23abf",
  "url": "https://osv.dev/vulnerability/MGASA-2026-0478",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "Updated mingw-pcre2 & pcre2 packages fix security vulnerabilities",
    "summary": "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). (CVE-2026-86145) PCRE2: out-of-bounds write in JIT matching with large stack allocations. (CVE-2026-103111)",
    "evidence": "osv:MGASA-2026-0478",
    "products": [
      {
        "name": {
          "value": "mingw-pcre2",
          "evidence": "/affected/0/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "10.49-1.mga10",
            "evidence": "/affected/0/ranges"
          }
        ],
        "affected_versions": []
      },
      {
        "name": {
          "value": "pcre2",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "10.49-1.mga10",
            "evidence": "/affected/1/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "unknown",
    "structured": {
      "id": "MGASA-2026-0478",
      "aliases": [
        "MGASA-2026-0478"
      ],
      "affected": [
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "10.49-1.mga10"
                }
              ]
            }
          ],
          "package": {
            "name": "mingw-pcre2",
            "purl": "pkg:rpm/mageia/mingw-pcre2?arch=source&distro=mageia-10",
            "ecosystem": "Mageia:10"
          },
          "database_specific": {
            "source": "https://advisories.mageia.org/MGASA-2026-0478.json"
          },
          "ecosystem_specific": {
            "section": "core"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "10.49-1.mga10"
                }
              ]
            }
          ],
          "package": {
            "name": "pcre2",
            "purl": "pkg:rpm/mageia/pcre2?arch=source&distro=mageia-10",
            "ecosystem": "Mageia:10"
          },
          "database_specific": {
            "source": "https://advisories.mageia.org/MGASA-2026-0478.json"
          },
          "ecosystem_specific": {
            "section": "core"
          }
        }
      ],
      "modified": "2026-10-09T17:28:03.923179103Z",
      "provider": "osv",
      "upstream": [
        "CVE-2026-103111",
        "CVE-2026-86145"
      ],
      "references": [
        "https://advisories.mageia.org/MGASA-2026-0478.html",
        "https://bugs.mageia.org/show_bug.cgi?id=36377",
        "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/4WZRH5FLU3A6ZQIPE6WRM7UV7K6S6UHP/",
        "https://www.openwall.com/lists/oss-security/2026/09/29/2",
        "https://github.com/PCRE2Project/pcre2/releases/tag/pcre2-10.49",
        "https://github.com/PCRE2Project/pcre2/security/advisories/GHSA-r9hj-j2rw-4q3m",
        "https://lists.debian.org/debian-security-announce/2026/msg00443.html"
      ]
    },
    "related_cves": [
      {
        "value": "CVE-2026-103111",
        "evidence": "/upstream"
      },
      {
        "value": "CVE-2026-86145",
        "evidence": "/upstream"
      }
    ],
    "security_relevant": true,
    "severity_evidence": null
  },
  "source_id": "core-osv",
  "document_id": 123795,
  "published_at": "2026-10-09T17:00:24+00:00"
}