Libsolv: heap buffer overflow in libsolv repopagestore via unchecked decompression of malicious .solv page data

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-48864
StatePUBLISHED
Assignerredhat
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-05-26 17:16:54 UTC
Updated2026-07-31 21:17:31 UTC
DescriptionA flaw was found in libsolv. This heap buffer overflow occurs during the decompression of attacker-controlled compressed data within `.solv` files due to insufficient input validation. An attacker can provide a specially crafted `.solv` file, which, when processed by a vulnerable application, can lead to out-of-bounds memory access. This could result in information disclosure, alteration of program execution, or a denial of service.

Risk And Classification

Primary CVSS: v3.1 7.8 HIGH from [email protected]

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

EPSS: 0.002050000 probability, percentile 0.106840000 (date 2026-07-31)

Problem Types: CWE-787 | CWE-787 Out-of-bounds Write

VersionSourceTypeScoreSeverityVector
3.1[email protected]Secondary7.8HIGHCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
3.1CNACVSS7.8HIGHCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

CVSS v3.1 Breakdown

Attack Vector
Local
Attack Complexity
Low
Privileges Required
None
User Interaction
Required
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

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

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Application Opensuse Libsolv 0.7.36 All All All
Operating System Redhat Enterprise Linux 10.0 All All All
Operating System Redhat Enterprise Linux 7.0 All All All
Operating System Redhat Enterprise Linux 8.0 All All All
Operating System Redhat Enterprise Linux 9.0 All All All
Application Redhat Hardened Images - All All All
Application Redhat Openshift Container Platform 4.0 All All All
Application Redhat Satellite 6.0 All All All
Application Redhat Update Infrastructure 4 All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Red Hat Red Hat Enterprise Linux 10 unaffected 0:0.7.33-5.el10_2 * rpm Not specified
CNA Red Hat Red Hat Enterprise Linux 10.0 Extended Update Support unaffected 0:0.7.29-8.el10_0.1 * rpm Not specified
CNA Red Hat Red Hat Enterprise Linux 8 unaffected 0:0.7.20-7.el8_10 * rpm Not specified
CNA Red Hat Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support unaffected 0:0.7.16-3.el8_4.1 * rpm Not specified
CNA Red Hat Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On unaffected 0:0.7.16-3.el8_4.1 * rpm Not specified
CNA Red Hat Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support unaffected 0:0.7.20-1.el8_6.1 * rpm Not specified
CNA Red Hat Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On unaffected 0:0.7.20-1.el8_6.1 * rpm Not specified
CNA Red Hat Red Hat Enterprise Linux 8.8 Telecommunications Update Service unaffected 0:0.7.20-4.el8_8.1 * rpm Not specified
CNA Red Hat Red Hat Enterprise Linux 8.8 Update Services For SAP Solutions unaffected 0:0.7.20-4.el8_8.1 * rpm Not specified
CNA Red Hat Red Hat Enterprise Linux 9 unaffected 0:0.7.24-6.el9_8 * rpm Not specified
CNA Red Hat Red Hat Enterprise Linux 9 unaffected 0:0.7.24-6.el9_8 * rpm Not specified
CNA Red Hat Red Hat Enterprise Linux 9.2 Update Services For SAP Solutions unaffected 0:0.7.22-4.el9_2.1 * rpm Not specified
CNA Red Hat Red Hat Enterprise Linux 9.4 Update Services For SAP Solutions unaffected 0:0.7.24-2.el9_4.1 * rpm Not specified
CNA Red Hat Red Hat Enterprise Linux 9.6 Extended Update Support unaffected 0:0.7.24-3.el9_6.1 * rpm Not specified
CNA Red Hat Red Hat Discovery 2 unaffected 1784821670 * rpm Not specified
CNA Red Hat Red Hat Discovery 2 unaffected 1784821750 * rpm Not specified
CNA Red Hat Red Hat Hardened Images unaffected 0.7.38-2.hum1 * rpm Not specified
CNA Red Hat Red Hat Update Infrastructure 5 unaffected 1784794818 * rpm Not specified
CNA Red Hat Red Hat Update Infrastructure 5 unaffected 1784794778 * rpm Not specified
CNA Red Hat Red Hat Update Infrastructure 5 unaffected 1784795112 * rpm Not specified
CNA Red Hat Red Hat Update Infrastructure 5 unaffected 1784794289 * rpm Not specified
CNA Red Hat Red Hat Update Infrastructure 5 unaffected 1784795076 * rpm Not specified
CNA Red Hat Red Hat Enterprise Linux 7 Not specified Not specified
CNA Red Hat Red Hat OpenShift Container Platform 4 Not specified Not specified
CNA Red Hat Red Hat Satellite 6 Not specified Not specified
CNA Red Hat Red Hat Update Infrastructure 4 For Cloud Providers Not specified Not specified

References

ReferenceSourceLinkTags
access.redhat.com/errata/RHSA-2026:48813 [email protected] access.redhat.com
access.redhat.com/errata/RHSA-2026:44481 [email protected] access.redhat.com
access.redhat.com/errata/RHSA-2026:48811 [email protected] access.redhat.com
access.redhat.com/errata/RHSA-2026:48817 [email protected] access.redhat.com
access.redhat.com/errata/RHSA-2026:36730 [email protected] access.redhat.com
access.redhat.com/errata/RHSA-2026:46836 [email protected] access.redhat.com
access.redhat.com/errata/RHSA-2026:48816 [email protected] access.redhat.com
access.redhat.com/errata/RHSA-2026:39315 [email protected] access.redhat.com
bugzilla.redhat.com/show_bug.cgi [email protected] bugzilla.redhat.com Exploit, Issue Tracking, Third Party Advisory
access.redhat.com/errata/RHSA-2026:28236 [email protected] access.redhat.com
access.redhat.com/security/cve/CVE-2026-48864 [email protected] access.redhat.com Third Party Advisory
access.redhat.com/errata/RHSA-2026:48815 [email protected] access.redhat.com
access.redhat.com/errata/RHSA-2026:21333 [email protected] access.redhat.com Third Party Advisory
access.redhat.com/errata/RHSA-2026:48818 [email protected] access.redhat.com
access.redhat.com/errata/RHSA-2026:48814 [email protected] access.redhat.com
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Vendor Comments And Credit

Discovery Credit

CNA: This issue was discovered by Found by AISLE in partnership with Red Hat. (en)

Additional Advisory Data

SourceTimeEvent
CNA2026-04-21T23:19:41.000ZReported to Red Hat.
CNA2026-05-26T16:07:55.363ZMade public.

Workarounds

CNA: 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.

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