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Fencer Vulns
high 7.8

CVE-2026-48864 json

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

published 2026-05-26 5 mo ago modified 2026-11-06 2 d ago also EUVD-2026-31859

cvss
7.8
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.2%
EPSS 0.2% chance of exploitation in 30 days, percentile 13%
public exploits
0
none known

Summary

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.

Patch / fix

  • Red Hat Red Hat Enterprise Linux 10 0:0.7.33-5.el10_2
  • Red Hat Red Hat Enterprise Linux 10.0 Extended Update Support 0:0.7.29-8.el10_0.1
  • Red Hat Red Hat Enterprise Linux 7 Extended Lifecycle Support 0:0.6.34-4.el7_9.1
  • Red Hat Red Hat Enterprise Linux 8 0:0.7.20-7.el8_10
  • Red Hat Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support 0:0.7.16-3.el8_4.1
  • Red Hat Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On 0:0.7.16-3.el8_4.1
  • Red Hat Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support 0:0.7.20-1.el8_6.1
  • Red Hat Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On 0:0.7.20-1.el8_6.1
  • Red Hat Red Hat Enterprise Linux 8.8 Telecommunications Update Service 0:0.7.20-4.el8_8.1
  • Red Hat Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions 0:0.7.20-4.el8_8.1
  • Red Hat Red Hat Enterprise Linux 9 0:0.7.24-6.el9_8
  • Red Hat Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions 0:0.7.22-4.el9_2.1
  • Red Hat Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions 0:0.7.24-2.el9_4.1
  • Red Hat Red Hat Enterprise Linux 9.6 Extended Update Support 0:0.7.24-3.el9_6.1
  • Red Hat Red Hat OpenShift Container Platform 4.12 412.86.202608241157-0
  • Red Hat Red Hat OpenShift Container Platform 4.13 413.92.202609080414-0
  • Red Hat Red Hat OpenShift Container Platform 4.14 414.92.202608172040-0
  • Red Hat Red Hat OpenShift Container Platform 4.15 415.92.202608180329-0
  • Red Hat Red Hat OpenShift Container Platform 4.16 416.94.202608150307-0
  • Red Hat Red Hat OpenShift Container Platform 4.17 417.94.202608250221-0
  • Red Hat Red Hat OpenShift Container Platform 4.18 418.94.202608142238-0
  • Red Hat Red Hat OpenShift Container Platform 4.19 4.19.9.6.202608182320-0
  • Red Hat Red Hat Satellite 6.16 for RHEL 8 1:0.7.20-7.el8sat
  • Red Hat Cert Manager support for Red Hat OpenShift release 1.17 1791371069, 1791371080, 1791378395, 1791788287, 1791970484
  • Red Hat Cert Manager support for Red Hat OpenShift release 1.18 1789029076, 1791459707, 1791459711, 1791459759, 1791966259
  • Red Hat Cert Manager support for Red Hat OpenShift release 1.20 1790223279, 1790223719, 1790272426, 1790589855, 1790589912, 1790589914, 1790589998, 1790598593
  • Red Hat Red Hat Discovery 2 1784821670, 1784821750
  • Red Hat Red Hat Hardened Images 0.7.38-2.hum1
  • Red Hat Red Hat Insights proxy 1.5 1786433656
  • Red Hat Red Hat OpenShift AI 3.0 1790276884, 1790276886, 1790276889, 1790276974, 1790277045
  • libsolv satellite capsule 6.16, satellite 6.16 1:0.7.20-7.el8sat
  • python-pyjwt satellite capsule 6.16, satellite 6.16 2.13.0-1.el8pc
  • python-pyjwt satellite capsule 6.16, satellite 6.16 2.13.0-1.el9pc
  • python3-solv satellite capsule 6.16, satellite 6.16 1:0.7.20-7.el8sat
  • openvox-agent satellite capsule 6.16, satellite 6.16 8.24.1-3.el8sat
  • openvox-agent satellite capsule 6.16, satellite 6.16 8.24.1-3.el9sat
  • python-pillow satellite capsule 6.16, satellite 6.16 12.3.0-1.el8pc
  • python-pillow satellite capsule 6.16, satellite 6.16 12.3.0-1.el9pc

red hat advisories RHSA-2026:50223RHSA-2026:49775RHSA-2026:48817RHSA-2026:48818RHSA-2026:48814RHSA-2026:48815

  • libsolv AlmaLinux 9 0.7.24-6.el9_8
  • python3-solv AlmaLinux 9 0.7.24-6.el9_8
  • libsolv-tools AlmaLinux 9 0.7.24-6.el9_8
  • libsolv AlmaLinux 8 0.7.20-7.el8_10
  • python3-solv AlmaLinux 8 0.7.20-7.el8_10
  • libsolv-tools AlmaLinux 8 0.7.20-7.el8_10
  • libsolv AlmaLinux 10 0.7.33-5.el10_2.alma.1
  • python3-solv AlmaLinux 10 0.7.33-5.el10_2.alma.1

almalinux advisories ALSA-2026:39315ALSA-2026:36730ALSA-2026:28236

  • libsolv Rocky Linux 9 0.7.24-6.el9_8
  • libsolv Rocky Linux 8 0.7.20-7.el8_10
  • libsolv Rocky Linux 10 0.7.33-5.el10_2

rocky linux advisories RLSA-2026:39315RLSA-2026:36730RLSA-2026:28236

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2026-48864 updated cvss 7.8

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

  • Red Hat Cert Manager support for Red Hat OpenShift release 1.17 cert-manager/cert-manager-operator-rhel9 1791788287, cert-manager/jetstack-cert-manager-rhel9 1791371069, cert-manager/cert-manager-istio-csr-rhel9 1791378395, cert-manager/cert-manager-operator-bundle 1791970484, cert-manager/jetstack-cert-manager-acmesolver-rhel9 1791371080
    fixed: vendor fix RHSA-2026:82336
  • Red Hat Cert Manager support for Red Hat OpenShift release 1.18 cert-manager/cert-manager-operator-rhel9 1789029076, cert-manager/jetstack-cert-manager-rhel9 1791459711, cert-manager/cert-manager-istio-csr-rhel9 1791459759, cert-manager/cert-manager-operator-bundle 1791966259, cert-manager/jetstack-cert-manager-acmesolver-rhel9 1791459707
    fixed: vendor fix RHSA-2026:82354
  • Red Hat Cert Manager support for Red Hat OpenShift release 1.20 cert-manager/cert-manager-operator-rhel9 1790272426, cert-manager/cert-manager-operator-rhel9 1790589855, cert-manager/jetstack-cert-manager-rhel9 1790223279, cert-manager/jetstack-cert-manager-rhel9 1790589912, cert-manager/cert-manager-istio-csr-rhel9 1790223719, cert-manager/cert-manager-istio-csr-rhel9 1790589914, +2 more
    fixed: vendor fix RHSA-2026:72475
  • Red Hat CodeReady Linux Builder EUS (v.9.6) libsolv-debuginfo 0.7.24-3.el9_6.1, libsolv-debugsource 0.7.24-3.el9_6.1
    fixed: vendor fix RHSA-2026:48811
  • Red Hat Discovery 2 discovery/discovery-ui-rhel9 1784821750, discovery/discovery-server-rhel9 1784821670
    fixed: vendor fix RHSA-2026:46836
  • Red Hat Enterprise Linux AppStream (v. 9) python3-solv 0.7.24-6.el9_8
    fixed: vendor fix RHSA-2026:39315
  • Red Hat Enterprise Linux AppStream (v. 10) python3-solv 0.7.33-5.el10_2
    fixed: vendor fix RHSA-2026:28236
  • Red Hat Enterprise Linux AppStream E4S (v.9.2) libsolv-debuginfo 0.7.22-4.el9_2.1, libsolv-debugsource 0.7.22-4.el9_2.1
    fixed: vendor fix RHSA-2026:48814
show 31 more
  • Red Hat Enterprise Linux AppStream E4S (v.9.4) libsolv-debuginfo 0.7.24-2.el9_4.1, libsolv-debugsource 0.7.24-2.el9_4.1
    fixed: vendor fix RHSA-2026:48813
  • Red Hat Enterprise Linux AppStream EUS (v. 10.0) libsolv-debuginfo 0.7.29-8.el10_0.1, libsolv-debugsource 0.7.29-8.el10_0.1
    fixed: vendor fix RHSA-2026:48818
  • Red Hat Enterprise Linux AppStream EUS (v.9.6) libsolv-debuginfo 0.7.24-3.el9_6.1, libsolv-debugsource 0.7.24-3.el9_6.1
    fixed: vendor fix RHSA-2026:48811
  • Red Hat Enterprise Linux BaseOS (v. 8) libsolv 0.7.20-7.el8_10, python3-solv 0.7.20-7.el8_10
    fixed: vendor fix RHSA-2026:36730
  • Red Hat Enterprise Linux BaseOS (v. 9) libsolv 0.7.24-6.el9_8
    fixed: vendor fix RHSA-2026:39315
  • Red Hat Enterprise Linux BaseOS (v. 10) libsolv 0.7.33-5.el10_2
    fixed: vendor fix RHSA-2026:28236
  • Red Hat Enterprise Linux BaseOS AUS (v.8.4) libsolv 0.7.16-3.el8_4.1
    fixed: vendor fix RHSA-2026:48817
  • Red Hat Enterprise Linux BaseOS AUS (v.8.6) libsolv 0.7.20-1.el8_6.1
    fixed: vendor fix RHSA-2026:48815
  • Red Hat Enterprise Linux BaseOS E4S (v.8.8) libsolv 0.7.20-4.el8_8.1
    fixed: vendor fix RHSA-2026:48816
  • Red Hat Enterprise Linux BaseOS E4S (v.9.2) libsolv 0.7.22-4.el9_2.1
    fixed: vendor fix RHSA-2026:48814
  • Red Hat Enterprise Linux BaseOS E4S (v.9.4) libsolv 0.7.24-2.el9_4.1
    fixed: vendor fix RHSA-2026:48813
  • Red Hat Enterprise Linux BaseOS EUS (v. 10.0) libsolv 0.7.29-8.el10_0.1
    fixed: vendor fix RHSA-2026:48818
  • Red Hat Enterprise Linux BaseOS EUS (v.9.6) libsolv 0.7.24-3.el9_6.1
    fixed: vendor fix RHSA-2026:48811
  • Red Hat Enterprise Linux BaseOS EUS EXTENSION (v.8.4) libsolv 0.7.16-3.el8_4.1
    fixed: vendor fix RHSA-2026:48817
  • Red Hat Enterprise Linux BaseOS EUS EXTENSION (v.8.6) libsolv 0.7.20-1.el8_6.1
    fixed: vendor fix RHSA-2026:48815
  • Red Hat Enterprise Linux BaseOS TUS (v.8.8) libsolv 0.7.20-4.el8_8.1
    fixed: vendor fix RHSA-2026:48816
  • Red Hat Enterprise Linux CodeReady Linux Builder (v. 9) libsolv-tools 0.7.24-6.el9_8
    fixed: vendor fix RHSA-2026:39315
  • Red Hat Enterprise Linux CodeReady Linux Builder (v. 10) libsolv-tools 0.7.33-5.el10_2, libsolv-tools-base 0.7.33-5.el10_2
    fixed: vendor fix RHSA-2026:28236
  • Red Hat Enterprise Linux CodeReady Linux Builder EUS (v. 10.0) libsolv-debuginfo 0.7.29-8.el10_0.1, libsolv-debugsource 0.7.29-8.el10_0.1
    fixed: vendor fix RHSA-2026:48818
  • Red Hat Enterprise Linux CRB (v. 8) libsolv-tools 0.7.20-7.el8_10
    fixed: vendor fix RHSA-2026:36730
  • Red Hat Enterprise Linux Server (v. 7 ELS) libsolv 0.6.34-4.el7_9.1 Red Hat Enterprise Linux Server Optional (v. 7 ELS) libsolv-debuginfo 0.6.34-4.el7_9.1
    fixed: vendor fix RHSA-2026:49775
  • Red Hat Hardened Images libsolv 0.7.38-2.hum1, libsolv-demo 0.7.38-2.hum1, libsolv-tools 0.7.38-2.hum1, libsolv-tools-base 0.7.38-2.hum1
    fixed: vendor fix RHSA-2026:21333
  • Red Hat Insights proxy 1.5 insights-proxy/insights-proxy-container-rhel9 1786433656
    fixed: vendor fix RHSA-2026:53371
  • Red Hat OpenShift AI 3.0 rhai/base-image-cpu-rhel9 1790277045, rhai/base-image-tpu-rhel9 1790276884, rhai/base-image-cuda-rhel9 1790276974, rhai/base-image-rocm-rhel9 1790276886, rhai/base-image-spyre-rhel9 1790276889
    fixed: vendor fix RHSA-2026:73960
  • Red Hat OpenShift AI 3.2 rhai/base-image-cpu-rhel9 1790703590, rhai/base-image-tpu-rhel9 1790703497, rhai/base-image-cuda-rhel9 1790703586, rhai/base-image-rocm-rhel9 1790703494, rhai/base-image-rocm-rhel9 1790703506, rhai/base-image-spyre-rhel9 1790703568
    fixed: vendor fix RHSA-2026:74460
  • Red Hat OpenShift AI 3.4 rhai/base-image-neuron-rhel9 1790703542
    fixed: vendor fix RHSA-2026:74674
  • Red Hat OpenShift Container Platform 4.12 rhcos 412.86.202608241157
    fixed: vendor fix RHSA-2026:59831
  • Red Hat OpenShift Container Platform 4.13 rhcos 413.92.202609080414
    fixed: vendor fix RHSA-2026:65839
  • Red Hat OpenShift Container Platform 4.14 rhcos 414.92.202608172040
    fixed: vendor fix RHSA-2026:56786
  • Red Hat OpenShift Container Platform 4.15 rhcos 415.92.202608180329
    fixed: vendor fix RHSA-2026:56911
  • Red Hat OpenShift Container Platform 4.16 rhcos 416.94.202608150307
    fixed: vendor fix RHSA-2026:56853

5 more fixed, 24 more not affected in the full advisory

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
total
Assessed
5 mo ago

Exploit prediction

0.23% chance of exploitation in the next 30 days, higher than 13% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • bugzilla.redhat.com https://bugzilla.redhat.com/show_bug.cgi?id=2460425 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
CNA 3.1 7.8 CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Affected products

  • Red Hat Red Hat Enterprise Linux 10
  • Red Hat Red Hat Enterprise Linux 10.0 Extended Update Support
  • Red Hat Red Hat Enterprise Linux 7 Extended Lifecycle Support
  • Red Hat Red Hat Enterprise Linux 8
  • Red Hat Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support
  • Red Hat Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On
  • Red Hat Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support
  • Red Hat Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On
  • Red Hat Red Hat Enterprise Linux 8.8 Telecommunications Update Service
  • Red Hat Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions
  • Red Hat Red Hat Enterprise Linux 9
  • Red Hat Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions
  • Red Hat Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions
  • Red Hat Red Hat Enterprise Linux 9.6 Extended Update Support
  • Red Hat Red Hat OpenShift Container Platform 4.12
  • Red Hat Red Hat OpenShift Container Platform 4.13
  • Red Hat Red Hat OpenShift Container Platform 4.14
  • Red Hat Red Hat OpenShift Container Platform 4.15
  • Red Hat Red Hat OpenShift Container Platform 4.16
  • Red Hat Red Hat OpenShift Container Platform 4.17
  • Red Hat Red Hat OpenShift Container Platform 4.18
  • Red Hat Red Hat OpenShift Container Platform 4.19
  • Red Hat Red Hat Satellite 6.16 for RHEL 8
  • Red Hat Cert Manager support for Red Hat OpenShift release 1.17
  • Red Hat Cert Manager support for Red Hat OpenShift release 1.18
  • Red Hat Cert Manager support for Red Hat OpenShift release 1.20
  • Red Hat Red Hat Discovery 2
  • Red Hat Red Hat Hardened Images
  • Red Hat Red Hat Insights proxy 1.5
  • Red Hat Red Hat OpenShift AI 3.0
  • Red Hat Red Hat OpenShift AI 3.2
  • Red Hat Red Hat OpenShift AI 3.4
  • Red Hat Red Hat Update Infrastructure 5
  • Red Hat Red Hat OpenShift AI (RHOAI)
  • Red Hat Red Hat Update Infrastructure 4 for Cloud Providers

Classification

Weakness

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.