synced 10 MIN AGO
01 Record

CVE-2026-4878

Libcap: libcap: privilege escalation via toctou race condition in cap_set_file()

MediumPUBLISHEDCNA: redhat
CNA base score6.7 CVSS v3.xCVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:H
View raw JSON

02 Description

Libcap: libcap: privilege escalation via toctou race condition in cap_set_file()

03 Exploitation and scoring

Exploitation
Assessed, none found. CISA's assessment recorded neither public exploit code nor evidence of exploitation when it was made.
SSVC decision
  • ExploitationnoneCISA recorded no public exploit code and no evidence of exploitation.
  • AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
  • Technical ImpacttotalSuccessful exploitation gives total control of the vulnerable component.
CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.
EPSS probability
0.20% probability of exploitation activity in the next 30 days.
EPSS percentile
Equal to or higher than the score of 9.9% of scored records. A rank, not a probability.
NVD base score
7.0 (CVSS v3.x), scored by the NVD independently of the CNA.
NVD CVSS vector
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
NVD analysis status
Modified. NVD last modified this record on 2026-10-26.
Red Hat severity
Important. Red Hat's rating for its own products, not a CVSS rating.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

04 Metadata

Published
2026-04-09 14:49Z6 MO AGO
Last updated
2026-10-14 19:09Z14 DAYS AGO
Reserved
2026-03-26
Assigning CNA
redhat
Record state
PUBLISHED
Severity
Medium (CVSS 6.7)
CNA CVSS vector
CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:H
Weaknesses
  • CWE-367Time-of-check Time-of-use (TOCTOU) Race ConditionBase
Data version
5.2
Document digest
786d749b986e25f79c0725af861c7ca6cd794c569527650b15ba12c787ffce96

05 Affected products

VendorProductVersionsPlatforms
Red HatRed Hat Enterprise Linux 10Not specified—
Red HatRed Hat Enterprise Linux 10.0 Extended Update SupportNot specified—
Red HatRed Hat Enterprise Linux 8Not specified—
Red HatRed Hat Enterprise Linux 8.6 Advanced Mission Critical Update SupportNot specified—
Red HatRed Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-OnNot specified—
Red HatRed Hat Enterprise Linux 8.8 Telecommunications Update ServiceNot specified—
Red HatRed Hat Enterprise Linux 8.8 Update Services for SAP SolutionsNot specified—
Red HatRed Hat Enterprise Linux 9Not specified—
Red HatRed Hat Enterprise Linux 9.2 Update Services for SAP SolutionsNot specified—
Red HatRed Hat Enterprise Linux 9.4 Extended Update SupportNot specified—
Red HatRed Hat Enterprise Linux 9.6 Extended Update SupportNot specified—
Red HatRed Hat OpenShift Container Platform 4.12Not specified—
Red HatRed Hat OpenShift Container Platform 4.13Not specified—
Red HatRed Hat OpenShift Container Platform 4.14Not specified—
Red HatRed Hat OpenShift Container Platform 4.15Not specified—
Red HatRed Hat OpenShift Container Platform 4.16Not specified—
Red HatRed Hat OpenShift Container Platform 4.17Not specified—
Red HatRed Hat OpenShift Container Platform 4.18Not specified—
Red HatRed Hat OpenShift Container Platform 4.19Not specified—
Red HatCert Manager support for Red Hat OpenShift release 1.17Not specified—
Red HatCert Manager support for Red Hat OpenShift release 1.18Not specified—
Red HatCert Manager support for Red Hat OpenShift release 1.20Not specified—
Red HatCost Management 4Not specified—
Red HatRed Hat AI Inference Server 3.2Not specified—
Red HatRed Hat AI Inference Server 3.3Not specified—
Red HatRed Hat Discovery 2Not specified—
Red HatRed Hat Hardened ImagesNot specified—
Red HatRed Hat Insights proxy 1.5Not specified—
Red HatRed Hat OpenShift AI 3.4Not specified—
Red HatRed Hat OpenShift distributed tracing 3.9.3Not specified—
Red HatRed Hat Update Infrastructure 5Not specified—
Red HatRed Hat Enterprise Linux 6Not specified—
Red HatRed Hat Enterprise Linux 7Not specified—
Red HatRed Hat OpenShift Container Platform 4Not specified—

06 References

07 Fixed in

AlmaLinux 8

  • libcap
    Fixed in 2.48-6.el8_10.1
  • libcap-devel
    Fixed in 2.48-6.el8_10.1

Source: AlmaLinux, AlmaLinux OS. Copyright (c) 2023 AlmaLinux OS. Licensed under MIT License. Received through OSV.dev. Reformatted by exploit.cc.

AlmaLinux 9

  • libcap
    Fixed

    A version is affected if any line below covers it.

    • Affected before 2.48-10.el9_7.1
    • Affected before 2.48-10.el9_8.1
  • libcap-devel
    Fixed

    A version is affected if any line below covers it.

    • Affected before 2.48-10.el9_7.1
    • Affected before 2.48-10.el9_8.1

Source: AlmaLinux, AlmaLinux OS. Copyright (c) 2023 AlmaLinux OS. Licensed under MIT License. Received through OSV.dev. Reformatted by exploit.cc.

AlmaLinux 10

  • libcap
    Fixed

    A version is affected if any line below covers it.

    • Affected before 2.69-7.el10_1.1
    • Affected before 2.69-7.el10_2.1
  • libcap-devel
    Fixed

    A version is affected if any line below covers it.

    • Affected before 2.69-7.el10_1.1
    • Affected before 2.69-7.el10_2.1

Source: AlmaLinux, AlmaLinux OS. Copyright (c) 2023 AlmaLinux OS. Licensed under MIT License. Received through OSV.dev. Reformatted by exploit.cc.

CloudLinux 8

  • libcap
    Fixed in 2.48-6.el8_10.1
  • libcap-devel
    Fixed in 2.48-6.el8_10.1

Derived from AlmaLinux 8. Partial coverage: only packages taken from AlmaLinux 8 are listed.

Source: CloudLinux errata, CloudLinux Inc. Derived from: AlmaLinux, AlmaLinux OS. Copyright (c) 2023 AlmaLinux OS. Licensed under MIT License. Received through OSV.dev. Reformatted by exploit.cc.

CloudLinux 9

  • libcap
    Fixed

    A version is affected if any line below covers it.

    • Affected before 2.48-10.el9_7.1
    • Affected before 2.48-10.el9_8.1
  • libcap-devel
    Fixed

    A version is affected if any line below covers it.

    • Affected before 2.48-10.el9_7.1
    • Affected before 2.48-10.el9_8.1

Derived from AlmaLinux 9. Partial coverage: only packages taken from AlmaLinux 9 are listed.

Source: CloudLinux errata, CloudLinux Inc. Derived from: AlmaLinux, AlmaLinux OS. Copyright (c) 2023 AlmaLinux OS. Licensed under MIT License. Received through OSV.dev. Reformatted by exploit.cc.

CloudLinux 10

  • libcap
    Fixed

    A version is affected if any line below covers it.

    • Affected before 2.69-7.el10_1.1
    • Affected before 2.69-7.el10_2.1
  • libcap-devel
    Fixed

    A version is affected if any line below covers it.

    • Affected before 2.69-7.el10_1.1
    • Affected before 2.69-7.el10_2.1

Derived from AlmaLinux 10. Partial coverage: only packages taken from AlmaLinux 10 are listed.

Source: CloudLinux errata, CloudLinux Inc. Derived from: AlmaLinux, AlmaLinux OS. Copyright (c) 2023 AlmaLinux OS. Licensed under MIT License. Received through OSV.dev. Reformatted by exploit.cc.

Debian 12

  • libcap2
    Fixed in 1:2.66-4+deb12u3

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.

Debian 13

  • libcap2
    Fixed in 1:2.75-10+deb13u1

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.

Debian 14

  • libcap2
    Fixed in 1:2.78-1

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu 22.04 LTS

  • libcap2
    Fixed in 1:2.44-1ubuntu0.22.04.3

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu 24.04 LTS

  • libcap2
    Fixed in 1:2.66-5ubuntu2.4

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu 25.10

  • libcap2
    Fixed in 1:2.75-7ubuntu2.2

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu Pro 14.04 LTS

  • libcap2
    Fixed in 1:2.24-0ubuntu2+esm2
    Available with Ubuntu Pro with Legacy support add-on: https://ubuntu.com/pro

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu Pro 16.04 LTS

  • libcap2
    Fixed in 1:2.24-12ubuntu0.1~esm2
    Available with Ubuntu Pro with Legacy support add-on: https://ubuntu.com/pro

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu Pro 18.04 LTS

  • libcap2
    Fixed in 1:2.25-1.2ubuntu0.1~esm2
    Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu Pro 20.04 LTS

  • libcap2
    Fixed in 1:2.32-1ubuntu0.2+esm1
    Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

A release or ecosystem missing from this list has no record here. It may be unaffected or not covered by the source. Source notices and licences.