Vulnerability-Lookup

RHSA-2026:23229

Vulnerability from csaf_redhat - Published: 2026-06-04 13:19 - Updated: 2026-06-11 11:45

Summary

Red Hat Security Advisory: redis security update

Severity

Important

Notes

Topic: An update for redis is now available for Red Hat Enterprise Linux 9. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.

Details: Redis is an advanced key-value store. It is often referred to as a data-structure server since keys can contain strings, hashes, lists, sets, and sorted sets. For performance, Redis works with an in-memory data set. You can persist it either by dumping the data set to disk every once in a while, or by appending each command to a log. Security Fix(es): * redis: RESTORE invalid memory access may allow remote code execution (CVE-2026-25243) 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.

Terms of Use: 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 Red Hat Inc. and provide a link to the original.

CVE-2026-25243

A flaw was found in Redis. An authenticated attacker with permission to execute the RESTORE command can send a crafted serialized payload that may lead to an invalid memory access due to an improper validation of the serialized values. This flaw can cause the server to crash and may allow arbitrary code execution.

8.8 (High)


                        
                          CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CWE-122 - Heap-based Buffer Overflow

Affected products

Fixed 21 products

Product	Version	Remediation
Unresolved product id: AppStream-9.8.0.Z.MAIN.EUS:redis-0:6.2.22-1.el9_8.aarch64	—	Vendor Fix fix Workaround
Unresolved product id: AppStream-9.8.0.Z.MAIN.EUS:redis-0:6.2.22-1.el9_8.ppc64le	—	Vendor Fix fix Workaround
Unresolved product id: AppStream-9.8.0.Z.MAIN.EUS:redis-0:6.2.22-1.el9_8.s390x	—	Vendor Fix fix Workaround
Unresolved product id: AppStream-9.8.0.Z.MAIN.EUS:redis-0:6.2.22-1.el9_8.src	—	Vendor Fix fix Workaround
Unresolved product id: AppStream-9.8.0.Z.MAIN.EUS:redis-0:6.2.22-1.el9_8.x86_64	—	Vendor Fix fix Workaround
Unresolved product id: AppStream-9.8.0.Z.MAIN.EUS:redis-debuginfo-0:6.2.22-1.el9_8.aarch64	—	Vendor Fix fix Workaround
Unresolved product id: AppStream-9.8.0.Z.MAIN.EUS:redis-debuginfo-0:6.2.22-1.el9_8.i686	—	Vendor Fix fix Workaround
Unresolved product id: AppStream-9.8.0.Z.MAIN.EUS:redis-debuginfo-0:6.2.22-1.el9_8.ppc64le	—	Vendor Fix fix Workaround
Unresolved product id: AppStream-9.8.0.Z.MAIN.EUS:redis-debuginfo-0:6.2.22-1.el9_8.s390x	—	Vendor Fix fix Workaround
Unresolved product id: AppStream-9.8.0.Z.MAIN.EUS:redis-debuginfo-0:6.2.22-1.el9_8.x86_64	—	Vendor Fix fix Workaround
Unresolved product id: AppStream-9.8.0.Z.MAIN.EUS:redis-debugsource-0:6.2.22-1.el9_8.aarch64	—	Vendor Fix fix Workaround
Unresolved product id: AppStream-9.8.0.Z.MAIN.EUS:redis-debugsource-0:6.2.22-1.el9_8.i686	—	Vendor Fix fix Workaround
Unresolved product id: AppStream-9.8.0.Z.MAIN.EUS:redis-debugsource-0:6.2.22-1.el9_8.ppc64le	—	Vendor Fix fix Workaround
Unresolved product id: AppStream-9.8.0.Z.MAIN.EUS:redis-debugsource-0:6.2.22-1.el9_8.s390x	—	Vendor Fix fix Workaround
Unresolved product id: AppStream-9.8.0.Z.MAIN.EUS:redis-debugsource-0:6.2.22-1.el9_8.x86_64	—	Vendor Fix fix Workaround
Unresolved product id: AppStream-9.8.0.Z.MAIN.EUS:redis-devel-0:6.2.22-1.el9_8.aarch64	—	Vendor Fix fix Workaround
Unresolved product id: AppStream-9.8.0.Z.MAIN.EUS:redis-devel-0:6.2.22-1.el9_8.i686	—	Vendor Fix fix Workaround
Unresolved product id: AppStream-9.8.0.Z.MAIN.EUS:redis-devel-0:6.2.22-1.el9_8.ppc64le	—	Vendor Fix fix Workaround
Unresolved product id: AppStream-9.8.0.Z.MAIN.EUS:redis-devel-0:6.2.22-1.el9_8.s390x	—	Vendor Fix fix Workaround
Unresolved product id: AppStream-9.8.0.Z.MAIN.EUS:redis-devel-0:6.2.22-1.el9_8.x86_64	—	Vendor Fix fix Workaround
Unresolved product id: AppStream-9.8.0.Z.MAIN.EUS:redis-doc-0:6.2.22-1.el9_8.noarch	—	Vendor Fix fix Workaround

Threats

Impact Important

References

10 references

URL	Category
https://access.redhat.com/errata/RHSA-2026:23229	self
https://access.redhat.com/security/updates/classi…	external
https://bugzilla.redhat.com/show_bug.cgi?id=2466828	external
https://security.access.redhat.com/data/csaf/v2/a…	self
https://access.redhat.com/security/cve/CVE-2026-25243	self
https://bugzilla.redhat.com/show_bug.cgi?id=2466828	external
https://www.cve.org/CVERecord?id=CVE-2026-25243	external
https://nvd.nist.gov/vuln/detail/CVE-2026-25243	external
https://github.com/redis/redis/releases/tag/8.6.3	external
https://github.com/redis/redis/security/advisorie…	external

JSON

To clipboard

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            "AppStream-9.8.0.Z.MAIN.EUS:redis-debuginfo-0:6.2.22-1.el9_8.x86_64",
            "AppStream-9.8.0.Z.MAIN.EUS:redis-debugsource-0:6.2.22-1.el9_8.aarch64",
            "AppStream-9.8.0.Z.MAIN.EUS:redis-debugsource-0:6.2.22-1.el9_8.i686",
            "AppStream-9.8.0.Z.MAIN.EUS:redis-debugsource-0:6.2.22-1.el9_8.ppc64le",
            "AppStream-9.8.0.Z.MAIN.EUS:redis-debugsource-0:6.2.22-1.el9_8.s390x",
            "AppStream-9.8.0.Z.MAIN.EUS:redis-debugsource-0:6.2.22-1.el9_8.x86_64",
            "AppStream-9.8.0.Z.MAIN.EUS:redis-devel-0:6.2.22-1.el9_8.aarch64",
            "AppStream-9.8.0.Z.MAIN.EUS:redis-devel-0:6.2.22-1.el9_8.i686",
            "AppStream-9.8.0.Z.MAIN.EUS:redis-devel-0:6.2.22-1.el9_8.ppc64le",
            "AppStream-9.8.0.Z.MAIN.EUS:redis-devel-0:6.2.22-1.el9_8.s390x",
            "AppStream-9.8.0.Z.MAIN.EUS:redis-devel-0:6.2.22-1.el9_8.x86_64",
            "AppStream-9.8.0.Z.MAIN.EUS:redis-doc-0:6.2.22-1.el9_8.noarch"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Important"
        }
      ],
      "title": "redis: RESTORE invalid memory access may allow remote code execution"
    }
  ]
}

CVE-2026-25243 (GCVE-0-2026-25243)

Vulnerability from cvelistv5 – Published: 2026-05-05 16:44 – Updated: 2026-05-06 13:24

Title

redis-server RESTORE invalid memory access may allow remote code execution

Summary

Redis is an in-memory data structure store. In versions of redis-server up to 8.6.3, the RESTORE command does not properly validate serialized values. An authenticated attacker with permission to execute RESTORE can supply a crafted serialized payload that triggers invalid memory access and may lead to remote code execution. A workaround is to restrict access to the RESTORE command with ACL rules. This is patched in version 8.6.3.

Severity

7.7 (High)


                        
                          CVSS:4.0/AV:N/AC:H/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

SSVC

Exploitation: none Automatable: no Technical Impact: total

CISA Coordinator (v2.0.3)

CWE

CWE-122 - Heap-based Buffer Overflow

Assigner

GitHub_M

References

2 references

URL	Tags
https://github.com/redis/redis/security/advisorie…	x_refsource_CONFIRM
https://github.com/redis/redis/releases/tag/8.6.3	x_refsource_MISC

Impacted products

1 product

Vendor	Product	Version
redis	redis	Affected: < 8.6.3

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-25243",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "total"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-05-06T03:56:11.272472Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-05-06T13:24:39.678Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "redis",
          "vendor": "redis",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 8.6.3"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "Redis is an in-memory data structure store. In versions of redis-server up to 8.6.3, the RESTORE command does not properly validate serialized values. An authenticated attacker with permission to execute RESTORE can supply a crafted serialized payload that triggers invalid memory access and may lead to remote code execution. A workaround is to restrict access to the RESTORE command with ACL rules. This is patched in version 8.6.3."
        }
      ],
      "metrics": [
        {
          "cvssV4_0": {
            "attackComplexity": "HIGH",
            "attackRequirements": "NONE",
            "attackVector": "NETWORK",
            "baseScore": 7.7,
            "baseSeverity": "HIGH",
            "privilegesRequired": "LOW",
            "subAvailabilityImpact": "NONE",
            "subConfidentialityImpact": "NONE",
            "subIntegrityImpact": "NONE",
            "userInteraction": "NONE",
            "vectorString": "CVSS:4.0/AV:N/AC:H/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N",
            "version": "4.0",
            "vulnAvailabilityImpact": "HIGH",
            "vulnConfidentialityImpact": "HIGH",
            "vulnIntegrityImpact": "HIGH"
          }
        }
      ],
      "problemTypes": [
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        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "name": "https://github.com/redis/redis/security/advisories/GHSA-c8h9-259x-jff4",
          "tags": [
            "x_refsource_CONFIRM"
          ],
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        },
        {
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          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/redis/redis/releases/tag/8.6.3"
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      ],
      "source": {
        "advisory": "GHSA-c8h9-259x-jff4",
        "discovery": "UNKNOWN"
      },
      "title": "redis-server RESTORE invalid memory access may allow remote code execution"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2026-25243",
    "datePublished": "2026-05-05T16:44:57.306Z",
    "dateReserved": "2026-01-30T14:44:47.330Z",
    "dateUpdated": "2026-05-06T13:24:39.678Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

Action not permitted

RHSA-2026:23229

CVE-2026-25243 (GCVE-0-2026-25243)

Tags

Sightings

Nomenclature