{
  "document": {
    "aggregate_severity": {
      "text": "Important"
    },
    "category": "csaf_security_advisory",
    "csaf_version": "2.0",
    "distribution": {
      "text": "TuxCare License Agreement",
      "tlp": {
        "label": "WHITE",
        "url": "https://www.first.org/tlp/"
      }
    },
    "lang": "en",
    "notes": [
      {
        "category": "legal_disclaimer",
        "text": "This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Cloud Linux Inc. and provide a link to the original.",
        "title": "Terms of Use"
      },
      {
        "category": "details",
        "text": "* SECURITY UPDATE: Lua VM re-entry when a resync payload is processed while a\n     timed-out script is still on the stack\n     - debian/patches/0027-CVE-2026-23631.patch: return early from\n       readSyncBulkPayload() in src/replication.c while server.lua_timedout is\n       set, so rdbLoadRio() cannot reach luaCreateFunction() on the lua_State\n       that is paused inside the running script. Backport of upstream redis\n       commit 80c2b5a0a, substituting server.lua_timedout for the 7.0\n       isInsideYieldingLongCommand() helper. Applied as defence in depth: the\n       use-after-free CVE-2026-23631 describes is not reachable on 6.0.16, where\n       scriptingReset() is reached only via SCRIPT FLUSH and not from the resync\n       path.\n     - CVE-2026-23631",
        "title": "Details"
      }
    ],
    "publisher": {
      "category": "vendor",
      "contact_details": "https://tuxcare.com/contact/",
      "name": "TuxCare",
      "namespace": "https://tuxcare.com/"
    },
    "references": [
      {
        "category": "self",
        "summary": "https://cve.tuxcare.com/els/releases/CLSA-2026:1789049274",
        "url": "https://cve.tuxcare.com/els/releases/CLSA-2026:1789049274"
      },
      {
        "category": "self",
        "summary": "Canonical URL",
        "url": "https://security.tuxcare.com/csaf/v2/els_os/debian11els/advisories/2026/clsa-2026_1789049274.json"
      }
    ],
    "tracking": {
      "current_release_date": "2026-09-10T14:08:52Z",
      "generator": {
        "date": "2026-09-10T14:08:52Z",
        "engine": {
          "name": "pyCSAF"
        }
      },
      "id": "CLSA-2026:1789049274",
      "initial_release_date": "2026-09-10T14:08:52Z",
      "revision_history": [
        {
          "date": "2026-09-10T14:08:52Z",
          "number": "1",
          "summary": "Initial version"
        }
      ],
      "status": "final",
      "version": "1"
    },
    "title": "Fix CVE(s): CVE-2026-23631"
  },
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  "vulnerabilities": [
    {
      "cve": "CVE-2026-23631",
      "cwe": {
        "id": "CWE-416",
        "name": "Use After Free"
      },
      "notes": [
        {
          "category": "description",
          "text": "Redis is an in-memory data structure store. In all versions of redis-server with Lua scripting, an authenticated attacker can exploit the master-replica synchronization mechanism to trigger a use-after-free on replicas where replica-read-only is disabled or can be disabled, which may lead to remote code execution. A workaround is to prevent users from executing Lua scripts or avoid using replicas where replica-read-only is disabled. This is patched in version 8.6.3.",
          "title": "Vulnerability description"
        }
      ],
      "product_status": {
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          "Debian-11:redis-sentinel-5:6.0.16-1+deb11u9+tuxcare.els1.amd64",
          "Debian-11:redis-sentinel-5:6.0.16-1+deb11u9+tuxcare.els1.arm64",
          "Debian-11:redis-sentinel-5:6.0.16-1+deb11u9+tuxcare.els1.armel",
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          "Debian-11:redis-server-5:6.0.16-1+deb11u9+tuxcare.els1.arm64",
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          "Debian-11:redis-tools-5:6.0.16-1+deb11u9+tuxcare.els1.amd64",
          "Debian-11:redis-tools-5:6.0.16-1+deb11u9+tuxcare.els1.arm64",
          "Debian-11:redis-tools-5:6.0.16-1+deb11u9+tuxcare.els1.armel"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "Canonical URL",
          "url": "https://cve.tuxcare.com/els/cve/CVE-2026-23631"
        },
        {
          "category": "external",
          "summary": "https://github.com/redis/redis/releases/tag/8.6.3",
          "url": "https://github.com/redis/redis/releases/tag/8.6.3"
        },
        {
          "category": "external",
          "summary": "https://github.com/redis/redis/security/advisories/GHSA-8ghh-qpmp-7826",
          "url": "https://github.com/redis/redis/security/advisories/GHSA-8ghh-qpmp-7826"
        },
        {
          "category": "external",
          "summary": "https://access.redhat.com/errata/RHSA-2026:14316",
          "url": "https://access.redhat.com/errata/RHSA-2026:14316"
        },
        {
          "category": "external",
          "summary": "https://access.redhat.com/errata/RHSA-2026:25216",
          "url": "https://access.redhat.com/errata/RHSA-2026:25216"
        },
        {
          "category": "external",
          "summary": "https://access.redhat.com/errata/RHSA-2026:25219",
          "url": "https://access.redhat.com/errata/RHSA-2026:25219"
        },
        {
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          "summary": "https://access.redhat.com/errata/RHSA-2026:25925",
          "url": "https://access.redhat.com/errata/RHSA-2026:25925"
        },
        {
          "category": "external",
          "summary": "https://access.redhat.com/errata/RHSA-2026:26306",
          "url": "https://access.redhat.com/errata/RHSA-2026:26306"
        },
        {
          "category": "external",
          "summary": "https://access.redhat.com/errata/RHSA-2026:26540",
          "url": "https://access.redhat.com/errata/RHSA-2026:26540"
        },
        {
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          "summary": "https://access.redhat.com/errata/RHSA-2026:33444",
          "url": "https://access.redhat.com/errata/RHSA-2026:33444"
        },
        {
          "category": "external",
          "summary": "https://access.redhat.com/security/cve/CVE-2026-23631",
          "url": "https://access.redhat.com/security/cve/CVE-2026-23631"
        },
        {
          "category": "external",
          "summary": "https://bugzilla.redhat.com/show_bug.cgi?id=2466788",
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2466788"
        },
        {
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          "summary": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-23631.json",
          "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-23631.json"
        }
      ],
      "release_date": "2026-05-05T17:17:00Z",
      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2026-09-10T14:07:57.232275Z",
          "details": "Details on how to apply the fix are available at: https://cve.tuxcare.com/els/releases/CLSA-2026:1789049274",
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        {
          "category": "impact",
          "details": "Important"
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    }
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}