CVE-2026-48864

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

HIGH
7.8
CVSS Score
Published: May 26, 2026 at 04:16 PM UTC
Updated: October 14, 2026 at 08:17 PM UTC
6 products affected across 2 vendorsEnterprise LinuxOpenShift Container PlatformSatellite

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Severity
HIGH7.8
Exploit prediction
EPSS 0.2%
SSVC
No known exploit

Description

A 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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Vendor states this is fixed in 0:0.6.34-4.el7_9.1 (unaffected)
Vendor states this is fixed in 0:0.7.16-3.el8_4.1 (unaffected)
Vendor states this is fixed in 0:0.7.20-1.el8_6.1 (unaffected)
Vendor states this is fixed in 0:0.7.20-4.el8_8.1 (unaffected)
Vendor states this is fixed in 0:0.7.20-7.el8_10 (unaffected)
Vendor states this is fixed in 0:0.7.22-4.el9_2.1 (unaffected)
Vendor states this is fixed in 0:0.7.24-2.el9_4.1 (unaffected)
Vendor states this is fixed in 0:0.7.24-3.el9_6.1 (unaffected)
Vendor states this is fixed in 0:0.7.24-6.el9_8 (unaffected)
Vendor states this is fixed in 0:0.7.29-8.el10_0.1 (unaffected)
Vendor states this is fixed in 0:0.7.33-5.el10_2 (unaffected)
All versions1
Vendor states this is fixed in 0.7.38-2.hum1 (unaffected)
Vendor states this is fixed in 4.19.9.6.202608182320-0 (unaffected)
Vendor states this is fixed in 412.86.202608241157-0 (unaffected)
Vendor states this is fixed in 413.92.202609080414-0 (unaffected)
Vendor states this is fixed in 414.92.202608172040-0 (unaffected)
Vendor states this is fixed in 415.92.202608180329-0 (unaffected)
Vendor states this is fixed in 416.94.202608150307-0 (unaffected)
Vendor states this is fixed in 417.94.202608250221-0 (unaffected)
Vendor states this is fixed in 418.94.202608142238-0 (unaffected)
Vendor states this is fixed in 1:0.7.20-7.el8sat (unaffected)
Vendor states this is fixed in 1784794289 (unaffected)
Vendor states this is fixed in 1784794778 (unaffected)
Vendor states this is fixed in 1784794818 (unaffected)
Vendor states this is fixed in 1784795076 (unaffected)
Vendor states this is fixed in 1784795112 (unaffected)
Vendor states this is fixed in 1787135742 (unaffected)
Vendor states this is fixed in 1787241211 (unaffected)
Vendor states this is fixed in 1787241260 (unaffected)
Vendor states this is fixed in 5 (unaffected)

References (54)

VDB Entryx_refsource_REDHATThird Party Advisory
Source: cverecord
https://access.redhat.com/security/cve/CVE-2026-48864
Issue Trackingx_refsource_REDHATExploitThird Party Advisory
Source: cverecord
https://bugzilla.redhat.com/show_bug.cgi?id=2460425
Vendor Advisoryx_refsource_REDHATThird Party Advisory
Source: cverecord
https://access.redhat.com/errata/RHSA-2026:21333
Vendor Advisoryx_refsource_REDHAT
Source: cverecord
https://access.redhat.com/errata/RHSA-2026:28236
Vendor Advisoryx_refsource_REDHAT
Source: cverecord
https://access.redhat.com/errata/RHSA-2026:36730
Vendor Advisoryx_refsource_REDHAT
Source: cverecord
https://access.redhat.com/errata/RHSA-2026:39315
Vendor Advisoryx_refsource_REDHAT
Source: cverecord
https://access.redhat.com/errata/RHSA-2026:44481
Vendor Advisoryx_refsource_REDHAT
Source: cverecord
https://access.redhat.com/errata/RHSA-2026:46836

SSVC — Action Prioritization

SSVCNo known exploitNot automatableTotal impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

7.8HIGHredhat
Attack Vector
LOCAL
Complexity
LOW
Privileges
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-787

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