CVE-2026-6893 (GCVE-0-2026-6893)
Vulnerability from cvelistv5
Published
2026-06-10 19:49
Modified
2026-08-25 12:05
Severity ?
7.5 (High) - CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
CWE
  • CWE-78 - Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
Summary
A flaw was found in dracut. A remote attacker on the adjacent network can exploit this vulnerability by providing specially crafted DHCP (Dynamic Host Configuration Protocol) options, such as a malicious hostname, to a system using dracut's legacy DHCP path. These options are improperly handled and written into temporary shell scripts without proper escaping, leading to command injection. This allows the attacker to achieve root code execution within the initramfs, potentially compromising the system's boot and network behavior.
References
https://access.redhat.com/errata/RHSA-2026:26532 vendor-advisory, x_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:26533 vendor-advisory, x_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:26534 vendor-advisory, x_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:26713 vendor-advisory, x_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:57580 vendor-advisory, x_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:57772 vendor-advisory, x_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:57775 vendor-advisory, x_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:57785 vendor-advisory, x_refsource_REDHAT
https://access.redhat.com/security/cve/CVE-2026-6893 vdb-entry, x_refsource_REDHAT
https://bugzilla.redhat.com/show_bug.cgi?id=2459963 issue-tracking, x_refsource_REDHAT
Impacted products
Vendor Product Version
Red Hat Red Hat Enterprise Linux 10 Unaffected: 0:107-7.el10_2   < *
    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: 0:105-4.el10_0.1   < *
    cpe:/o:redhat:enterprise_linux_eus:10.0
 Create a notification for this product.
   Red Hat Red Hat Enterprise Linux 8 Unaffected: 0:049-244.git20260529.el8_10   < *
    cpe:/o:redhat:enterprise_linux:8::baseos
 Create a notification for this product.
   Red Hat Red Hat Enterprise Linux 9 Unaffected: 0:057-115.git20260527.el9_8   < *
    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: 0:057-115.git20260527.el9_8   < *
    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: 0:057-25.git20250717.el9_2.2   < *
    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 Update Services for SAP Solutions Unaffected: 0:057-54.git20250423.el9_4.3   < *
    cpe:/a:redhat:rhel_e4s:9.4::appstream
    cpe:/o:redhat:rhel_e4s:9.4::baseos
 Create a notification for this product.
   Red Hat Red Hat Enterprise Linux 9.6 Extended Update Support Unaffected: 0:057-89.git20250311.el9_6.1   < *
    cpe:/a:redhat:rhel_eus:9.6::appstream
    cpe:/o:redhat:rhel_eus:9.6::baseos
 Create a notification for this product.
   Red Hat Red Hat Hardened Images Unaffected: 109-6.hum1   < *
    cpe:/a:redhat:hummingbird:1
 Create a notification for this product.
   Red Hat Red Hat Enterprise Linux 6     cpe:/o:redhat:enterprise_linux:6
 Create a notification for this product.
   Red Hat Red Hat Enterprise Linux 7     cpe:/o:redhat:enterprise_linux:7
 Create a notification for this product.
   Red Hat Red Hat OpenShift Container Platform 4     cpe:/a:redhat:openshift:4
 Create a notification for this product.
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Tags
Taxonomy of the tags.




Sightings

Author Source Type Date

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
  • Confirmed: The vulnerability is confirmed from an analyst perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
  • Patched: This vulnerability was successfully patched by the user reporting the sighting.
  • Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
  • Not confirmed: The user expresses doubt about the veracity of the vulnerability.
  • Not patched: This vulnerability was not successfully patched by the user reporting the sighting.