CVE-2026-4878 (GCVE-0-2026-4878)

Vulnerability from cvelistv5 – Published: 2026-04-09 14:49 – Updated: 2026-10-14 19:09
VLAI
Title
Libcap: libcap: privilege escalation via toctou race condition in cap_set_file()
Summary
A flaw was found in libcap. A local unprivileged user can exploit a Time-of-check-to-time-of-use (TOCTOU) race condition in the `cap_set_file()` function. This allows an attacker with write access to a parent directory to redirect file capability updates to an attacker-controlled file. By doing so, capabilities can be injected into or stripped from unintended executables, leading to privilege escalation.
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-04-09 00:00 UTC
CWE
  • CWE-367 - Time-of-check Time-of-use (TOCTOU) Race Condition
Assigner
redhat CNA under the redhat root
CNA scorecard B 82/100 over 1036 records in the last 180 days details
References
URL Tags
https://access.redhat.com/errata/RHSA-2026:12423 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:12441 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:13285 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:14162 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:14937 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:19130 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:19346 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:19456 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:19458 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:20595 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:21254 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:21275 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:22634 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:22957 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:23233 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:23245 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:24346 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:25044 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:25096 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:25181 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:26542 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:27998 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:28887 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:29197 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:30078 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:30087 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:30088 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:30089 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:34098 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:39981 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:58981 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:59831 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:72502 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:74674 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:7473 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:82304 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:82322 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:82347 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:82354 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:82372 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:82857 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:82888 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/security/cve/CVE-2026-4878 vdb-entryx_refsource_REDHAT
https://bugzilla.redhat.com/show_bug.cgi?id=2447554
https://bugzilla.redhat.com/show_bug.cgi?id=2451615 issue-trackingx_refsource_REDHAT
http://www.openwall.com/lists/oss-security/2026/04/07/4
http://www.openwall.com/lists/oss-security/2026/0…
http://www.openwall.com/lists/oss-security/2026/04/08/9
http://www.openwall.com/lists/oss-security/2026/04/09/5
http://www.openwall.com/lists/oss-security/2026/04/09/6
https://security.access.redhat.com/data/csaf/v2/v… x_sadp-csaf-vex
Impacted products
Vendor Product Version CPE status
Red Hat Red Hat Enterprise Linux 10 Unaffected: 0:2.69-7.el10_1.1 , < * (rpm)
    cpe:/o:redhat:enterprise_linux:10.1
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Red Hat Red Hat Enterprise Linux 10 Unaffected: 0:2.69-7.el10_2.1 , < * (rpm)
    cpe:/o:redhat:enterprise_linux:10.2
Create a notification for this product.
Red Hat Red Hat Enterprise Linux 10.0 Extended Update Support Unaffected: 0:2.69-7.el10_0.1 , < * (rpm)
    cpe:/o:redhat:enterprise_linux_eus:10.0
Create a notification for this product.
Red Hat Red Hat Enterprise Linux 8 Unaffected: 0:2.48-6.el8_10.1 , < * (rpm)
    cpe:/o:redhat:enterprise_linux:8::baseos
Create a notification for this product.
Red Hat Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support Unaffected: 0:2.48-4.el8_6.1 , < * (rpm)
    cpe:/o:redhat:rhel_aus:8.6::baseos
    cpe:/o:redhat:rhel_eus_long_life:8.6::baseos
Create a notification for this product.
Red Hat Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On Unaffected: 0:2.48-4.el8_6.1 , < * (rpm)
    cpe:/o:redhat:rhel_aus:8.6::baseos
    cpe:/o:redhat:rhel_eus_long_life:8.6::baseos
Create a notification for this product.
Red Hat Red Hat Enterprise Linux 8.8 Telecommunications Update Service Unaffected: 0:2.48-5.el8_8.1 , < * (rpm)
    cpe:/o:redhat:rhel_e4s:8.8::baseos
    cpe:/o:redhat:rhel_tus:8.8::baseos
Create a notification for this product.
Red Hat Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions Unaffected: 0:2.48-5.el8_8.1 , < * (rpm)
    cpe:/o:redhat:rhel_e4s:8.8::baseos
    cpe:/o:redhat:rhel_tus:8.8::baseos
Create a notification for this product.
Red Hat Red Hat Enterprise Linux 9 Unaffected: 0:2.48-10.el9_7.1 , < * (rpm)
    cpe:/a:redhat:enterprise_linux:9::appstream
    cpe:/o:redhat:enterprise_linux:9::baseos
Create a notification for this product.
Red Hat Red Hat Enterprise Linux 9 Unaffected: 0:2.48-10.el9_8.1 , < * (rpm)
    cpe:/a:redhat:enterprise_linux:9::appstream
    cpe:/o:redhat:enterprise_linux:9::baseos
Create a notification for this product.
Red Hat Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions Unaffected: 0:2.48-9.el9_2.1 , < * (rpm)
    cpe:/a:redhat:rhel_e4s:9.2::appstream
    cpe:/o:redhat:rhel_e4s:9.2::baseos
Create a notification for this product.
Red Hat Red Hat Enterprise Linux 9.4 Extended Update Support Unaffected: 0:2.48-9.el9_4.1 , < * (rpm)
    cpe:/a:redhat:rhel_eus:9.4::appstream
    cpe:/o:redhat:rhel_eus:9.4::baseos
Create a notification for this product.
Red Hat Red Hat Enterprise Linux 9.6 Extended Update Support Unaffected: 0:2.48-9.el9_6.1 , < * (rpm)
    cpe:/a:redhat:rhel_eus:9.6::appstream
    cpe:/o:redhat:rhel_eus:9.6::baseos
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Red Hat Red Hat OpenShift Container Platform 4.12 Unaffected: 412.86.202608241157-0 , < * (rpm)
    cpe:/a:redhat:openshift:4.12::el8
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Red Hat Red Hat OpenShift Container Platform 4.13 Unaffected: 413.92.202606160406-0 , < * (rpm)
    cpe:/a:redhat:openshift:4.13::el9
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Red Hat Red Hat OpenShift Container Platform 4.14 Unaffected: 414.92.202606231112-0 , < * (rpm)
    cpe:/a:redhat:openshift:4.14::el9
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Red Hat Red Hat OpenShift Container Platform 4.15 Unaffected: 415.92.202606030318-0 , < * (rpm)
    cpe:/a:redhat:openshift:4.15::el9
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Red Hat Red Hat OpenShift Container Platform 4.16 Unaffected: 416.94.202606051757-0 , < * (rpm)
    cpe:/a:redhat:openshift:4.16::el9
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Red Hat Red Hat OpenShift Container Platform 4.17 Unaffected: 417.94.202606250942-0 , < * (rpm)
    cpe:/a:redhat:openshift:4.17::el9
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Red Hat Red Hat OpenShift Container Platform 4.18 Unaffected: 418.94.202606051320-0 , < * (rpm)
    cpe:/a:redhat:openshift:4.18::el9
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Red Hat Red Hat OpenShift Container Platform 4.19 Unaffected: 4.19.9.6.202606031700-0 , < * (rpm)
    cpe:/a:redhat:openshift:4.19::el9
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Red Hat Cert Manager support for Red Hat OpenShift release 1.17 Unaffected: 1791371080 , < * (rpm)
    cpe:/a:redhat:cert_manager:1.17::el9
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Red Hat Cert Manager support for Red Hat OpenShift release 1.17 Unaffected: 1791371069 , < * (rpm)
    cpe:/a:redhat:cert_manager:1.17::el9
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Red Hat Cert Manager support for Red Hat OpenShift release 1.17 Unaffected: 1791788287 , < * (rpm)
    cpe:/a:redhat:cert_manager:1.17::el9
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Red Hat Cert Manager support for Red Hat OpenShift release 1.17 Unaffected: 1791970484 , < * (rpm)
    cpe:/a:redhat:cert_manager:1.17::el9
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Red Hat Cert Manager support for Red Hat OpenShift release 1.18 Unaffected: 1791459707 , < * (rpm)
    cpe:/a:redhat:cert_manager:1.18::el9
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Red Hat Cert Manager support for Red Hat OpenShift release 1.18 Unaffected: 1791459711 , < * (rpm)
    cpe:/a:redhat:cert_manager:1.18::el9
Create a notification for this product.
Red Hat Cert Manager support for Red Hat OpenShift release 1.18 Unaffected: 1791459759 , < * (rpm)
    cpe:/a:redhat:cert_manager:1.18::el9
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Red Hat Cert Manager support for Red Hat OpenShift release 1.18 Unaffected: 1789029076 , < * (rpm)
    cpe:/a:redhat:cert_manager:1.18::el9
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Red Hat Cert Manager support for Red Hat OpenShift release 1.18 Unaffected: 1791966259 , < * (rpm)
    cpe:/a:redhat:cert_manager:1.18::el9
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Red Hat Cert Manager support for Red Hat OpenShift release 1.20 Unaffected: 1790598593 , < * (rpm)
    cpe:/a:redhat:cert_manager:1.20::el9
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Red Hat Cost Management 4 Unaffected: 1780946239 , < * (rpm)
    cpe:/a:redhat:cost_management:4::el9
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Red Hat Cost Management 4 Unaffected: 1783539156 , < * (rpm)
    cpe:/a:redhat:cost_management:4::el9
Create a notification for this product.
Red Hat Red Hat AI Inference Server 3.2 Unaffected: 1780681984 , < * (rpm)
    cpe:/a:redhat:ai_inference_server:3.2::el9
Create a notification for this product.
Red Hat Red Hat AI Inference Server 3.3 Unaffected: 1782352950 , < * (rpm)
    cpe:/a:redhat:ai_inference_server:3.3::el9
Create a notification for this product.
Red Hat Red Hat AI Inference Server 3.3 Unaffected: 1782352919 , < * (rpm)
    cpe:/a:redhat:ai_inference_server:3.3::el9
Create a notification for this product.
Red Hat Red Hat AI Inference Server 3.3 Unaffected: 1782353093 , < * (rpm)
    cpe:/a:redhat:ai_inference_server:3.3::el9
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Red Hat Red Hat AI Inference Server 3.3 Unaffected: 1782352847 , < * (rpm)
    cpe:/a:redhat:ai_inference_server:3.3::el9
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Red Hat Red Hat Discovery 2 Unaffected: 1778101579 , < * (rpm)
    cpe:/a:redhat:discovery:2::el9
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Red Hat Red Hat Discovery 2 Unaffected: 1778156756 , < * (rpm)
    cpe:/a:redhat:discovery:2::el9
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Red Hat Red Hat Discovery 2 Unaffected: 1782159791 , < * (rpm)
    cpe:/a:redhat:discovery:2::el9
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Red Hat Red Hat Discovery 2 Unaffected: 1782166952 , < * (rpm)
    cpe:/a:redhat:discovery:2::el9
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Red Hat Red Hat Hardened Images Unaffected: 2.78-1.1.hum1 , < * (rpm)
    cpe:/a:redhat:hummingbird:1
Create a notification for this product.
Red Hat Red Hat Insights proxy 1.5 Unaffected: 1780420428 , < * (rpm)
    cpe:/a:redhat:insights_proxy:1.5::el9
Create a notification for this product.
Red Hat Red Hat OpenShift AI 3.4 Unaffected: 1790703542 , < * (rpm)
    cpe:/a:redhat:openshift_ai:3.4::el9
Create a notification for this product.
Red Hat Red Hat OpenShift distributed tracing 3.9.3 Unaffected: 1778056267 , < * (rpm)
    cpe:/a:redhat:openshift_distributed_tracing:3.9::el9
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Red Hat Red Hat OpenShift distributed tracing 3.9.3 Unaffected: 1778056233 , < * (rpm)
    cpe:/a:redhat:openshift_distributed_tracing:3.9::el9
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Red Hat Red Hat OpenShift distributed tracing 3.9.3 Unaffected: 1778056245 , < * (rpm)
    cpe:/a:redhat:openshift_distributed_tracing:3.9::el9
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Red Hat Red Hat Update Infrastructure 5 Unaffected: 1779798159 , < * (rpm)
    cpe:/a:redhat:rhui:5::el9
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Red Hat Red Hat Update Infrastructure 5 Unaffected: 1779798164 , < * (rpm)
    cpe:/a:redhat:rhui:5::el9
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Red Hat Red Hat Update Infrastructure 5 Unaffected: 1779798165 , < * (rpm)
    cpe:/a:redhat:rhui:5::el9
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Red Hat Red Hat Update Infrastructure 5 Unaffected: 1779798222 , < * (rpm)
    cpe:/a:redhat:rhui:5::el9
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Red Hat Red Hat Update Infrastructure 5 Unaffected: 1787241211 , < * (rpm)
    cpe:/a:redhat:rhui:5::el9
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Red Hat Red Hat Update Infrastructure 5 Unaffected: 1787135742 , < * (rpm)
    cpe:/a:redhat:rhui:5::el9
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Red Hat Red Hat Update Infrastructure 5 Unaffected: 1787241260 , < * (rpm)
    cpe:/a:redhat:rhui:5::el9
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Red Hat Red Hat Enterprise Linux 6     cpe:/o:redhat:enterprise_linux:6
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Red Hat Red Hat Enterprise Linux 7     cpe:/o:redhat:enterprise_linux:7
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Red Hat Red Hat OpenShift Container Platform 4     cpe:/a:redhat:openshift:4
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Red Hat Red Hat Enterprise Linux 10 Unaffected: 0:2.69-7.el10_1.1 , < * (rpm)
Unaffected: 0:2.69-7.el10_2.1 , < * (rpm)
    cpe:/o:redhat:enterprise_linux:10.1
    cpe:/o:redhat:enterprise_linux:10.2
Create a notification for this product.
Red Hat Red Hat Enterprise Linux 8 Unaffected: 0:2.48-6.el8_10.1 , < * (rpm)
    cpe:/o:redhat:enterprise_linux:8
Create a notification for this product.
Red Hat Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support Unaffected: 0:2.48-4.el8_6.1 , < * (rpm)
    cpe:/o:redhat:rhel_aus:8.6
Create a notification for this product.
Red Hat Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On Unaffected: 0:2.48-4.el8_6.1 , < * (rpm)
    cpe:/o:redhat:rhel_eus_long_life:8.6
Create a notification for this product.
Red Hat Red Hat Enterprise Linux 8.8 Telecommunications Update Service Unaffected: 0:2.48-5.el8_8.1 , < * (rpm)
    cpe:/o:redhat:rhel_tus:8.8
Create a notification for this product.
Red Hat Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions Unaffected: 0:2.48-5.el8_8.1 , < * (rpm)
    cpe:/o:redhat:rhel_e4s:8.8
Create a notification for this product.
Red Hat Red Hat Enterprise Linux 9 Unaffected: 0:2.48-10.el9_7.1 , < * (rpm)
Unaffected: 0:2.48-10.el9_8.1 , < * (rpm)
    cpe:/a:redhat:enterprise_linux:9
    cpe:/o:redhat:enterprise_linux:9
Create a notification for this product.
Red Hat Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions Unaffected: 0:2.48-9.el9_2.1 , < * (rpm)
    cpe:/a:redhat:rhel_e4s:9.2
Create a notification for this product.
Red Hat Red Hat Enterprise Linux 9.4 Extended Update Support Unaffected: 0:2.48-9.el9_4.1 , < * (rpm)
    cpe:/a:redhat:rhel_eus:9.4
Create a notification for this product.
Red Hat Red Hat Enterprise Linux 9.6 Extended Update Support Unaffected: 0:2.48-9.el9_6.1 , < * (rpm)
    cpe:/a:redhat:rhel_eus:9.6
Create a notification for this product.
Red Hat Cost Management 4 Unaffected: 1780946239 , < * (rpm)
Unaffected: 1783539156 , < * (rpm)
    cpe:/a:redhat:cost_management:4::el9
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Red Hat Red Hat Discovery 2 Unaffected: 1778101579 , < * (rpm)
Unaffected: 1782159791 , < * (rpm)
    cpe:/a:redhat:discovery:2::el9
Create a notification for this product.
Red Hat Red Hat Discovery 2 Unaffected: 1778156756 , < * (rpm)
Unaffected: 1782166952 , < * (rpm)
    cpe:/a:redhat:discovery:2::el9
Create a notification for this product.
Date Public
2026-04-06 00:00
Show details on NVD website

{
  "containers": {
    "adp": [
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          "shortName": "CISA-ADP"
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      {
        "affected": [
          {
            "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
            "cpes": [
              "cpe:/o:redhat:enterprise_linux:10.1",
              "cpe:/o:redhat:enterprise_linux:10.2"
            ],
            "defaultStatus": "affected",
            "packageName": "libcap",
            "product": "Red Hat Enterprise Linux 10",
            "vendor": "Red Hat",
            "versions": [
              {
                "lessThan": "*",
                "status": "unaffected",
                "version": "0:2.69-7.el10_1.1",
                "versionType": "rpm"
              },
              {
                "lessThan": "*",
                "status": "unaffected",
                "version": "0:2.69-7.el10_2.1",
                "versionType": "rpm"
              }
            ]
          },
          {
            "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
            "cpes": [
              "cpe:/o:redhat:enterprise_linux_eus:10.0"
            ],
            "defaultStatus": "affected",
            "packageName": "libcap",
            "product": "Red Hat Enterprise Linux 10.0 Extended Update Support",
            "vendor": "Red Hat",
            "versions": [
              {
                "lessThan": "*",
                "status": "unaffected",
                "version": "0:2.69-7.el10_0.1",
                "versionType": "rpm"
              }
            ]
          },
          {
            "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
            "cpes": [
              "cpe:/o:redhat:enterprise_linux:8"
            ],
            "defaultStatus": "affected",
            "packageName": "libcap",
            "product": "Red Hat Enterprise Linux 8",
            "vendor": "Red Hat",
            "versions": [
              {
                "lessThan": "*",
                "status": "unaffected",
                "version": "0:2.48-6.el8_10.1",
                "versionType": "rpm"
              }
            ]
          },
          {
            "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
            "cpes": [
              "cpe:/o:redhat:rhel_aus:8.6"
            ],
            "defaultStatus": "affected",
            "packageName": "libcap",
            "product": "Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support",
            "vendor": "Red Hat",
            "versions": [
              {
                "lessThan": "*",
                "status": "unaffected",
                "version": "0:2.48-4.el8_6.1",
                "versionType": "rpm"
              }
            ]
          },
          {
            "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
            "cpes": [
              "cpe:/o:redhat:rhel_eus_long_life:8.6"
            ],
            "defaultStatus": "affected",
            "packageName": "libcap",
            "product": "Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On",
            "vendor": "Red Hat",
            "versions": [
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}



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