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TI-2026-73900 Aliases CVE-2026-88842GHSA-9p9q-94fg-r728

Out-of-bounds read in BusyBox dpkg corrupts status file

Priority LOW 15CWE-125Published · Updated

Key facts

Attack vector
Local
Privileges required
None
User interaction
Required
Attack complexity
Low
Impact type
—
Confidentiality · integrity · availability
None · Low · None
Fix status
Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA and Red Hat.

Summary

A flaw in the BusyBox dpkg implementation affects BusyBox as shipped in Red Hat Hardened Images. The write_status_file() function does not reset a field cursor between package stanzas, so when two packages are removed in one invocation and the first stanza is larger than the second, the second stanza can be dropped from the status file. This is an out-of-bounds read (CWE-125). A local user who can trigger the removal of two packages in one run can cause limited corruption of the dpkg status file, with a low impact on integrity.

Written with Claude Haiku 5.5 from the sources below · 2026-10-28

Description from the CNA

A flaw was found in BusyBox dpkg. The write_status_file() function does not reset a field cursor between package stanzas. When two packages are removed in a single invocation and the first stanza is larger than the second, the second package stanza can be dropped from the status file, causing limited data corruption.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00156 4th percentileScored 2026-11-07
Fix Fixed Red Hat: 1 advisory

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
Red HatRed Hat Hardened Images—1.37.0-9.4.hum1Patch availableCNA
  • Red Hat Hardened Images VendorRed Hat Affected — Fixed in 1.37.0-9.4.hum1 Patch available CNA

CPE names CNA · 1

CPEVersionsRoleVendor
cpe:/a:redhat:hummingbird:11—Red Hat
  • cpe:/a:redhat:hummingbird:1 Versions 1 — ·Red Hat

Remediation

Red Hat Hardened Images fixed in 1.37.0-9.4.hum1 via RHSA-2026:81391. CISA does not list this flaw in KEV.

Written with Claude Haiku 5.5 from the sources below · 2026-10-28

Red Hat 1 advisory

  • RHSA-2026:81391 Released 2026-10-12 · Red Hat rating Moderate
    Red Hat Hardened Images RPMs Security Update
    • Red Hat Hardened Images busybox-1:1.37.0-9.4.hum1@aarch64, busybox-1:1.37.0-9.4.hum1@s390x, busybox-1:1.37.0-9.4.hum1@src +7

Fixed in the same release

Records fixed by the same vendor advisory or release, as the CNA lists them.

  • Advisory ·

    Red Hat Hardened Images — RHSA-2026:81391

    2 records Highest priority Priority LOW 2 LOW

    Other records, highest priority first

    • TI-2026-70098 BusyBox tar writes files outside extraction directory via linksPriority LOW 27
    Show all 2 records → Advisory →

Vendor assessments

Red Hat

Red Hat rating: Low. Red Hat's page for this CVE →

ProductStatusPlan or fix
Red Hat Hardened ImagesFixed RHSA-2026:81391

Timeline

  1. 2026-10-14 Threatist record created from CVE-2026-88842
  2. 2026-10-14 CISA SSVC decision points changed
  3. 2026-10-14 Alias added: GHSA-9p9q-94fg-r728
  4. 2026-10-16 Fix available: [email protected] · CNA
  5. 2026-10-16 1 new reference · CNA
  6. 2026-10-16 Fix available: RHSA-2026:81391 · Red Hat
  7. 2026-10-16 Fix available: Red Hat Hardened Images · Red Hat
  8. 2026-10-16 CVSS score added · Red Hat

References

Advisory 1

Other 2

  • TI-2019-15875 Protection mechanism failure in Jenkins Pipeline: Groovy Plugin KEVCVSS 3.1CRITICAL 9.9
  • TI-2019-15874 Protection mechanism failure in Jenkins Script Security Plugin KEVCVSS 3.1CRITICAL 9.9
  • TI-2019-08259 Underflow in PHP-FPM can lead to RCE KEVCVSS 3.1CRITICAL 9.8
  • TI-2019-05363 Code injection in Elastic Kibana KEVCVSS 3.1CRITICAL 10.0
  • TI-2019-03949 Out-of-bounds write in ESXi and Horizon DaaS KEVCVSS 3.1CRITICAL 9.8
  • TI-2018-16080 A code execution vulnerability exists in the Stapler web framework used by Jenkins 2.153… KEVCVSS 3.1CRITICAL 9.8
See all 7413 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences