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Fencer Vulns
medium 6.6

CVE-2026-89085 json

Parted: parted: heap-based buffer overflow via crafted fat32 filesystem image

published 2026-10-16 23 d ago modified 2026-11-06 3 d ago also EUVD-2026-103202

cvss
6.6
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 10%
public exploits
0
none known

Summary

A flaw was found in parted. A heap-based buffer overflow can occur when processing a specially crafted FAT32 filesystem due to an integer calculation error during buffer allocation. A local attacker could exploit this by enticing a user or automated service to open a malicious filesystem image, resulting in an application crash leading to a Denial of Service (DoS) or potential memory corruption.

Patch / fix

  • parted Debian 14 3.8-2

debian advisories DEBIAN-CVE-2026-89085

  • parted SLES for SAP 15 SP6, SLES for SAP 15 SP5, SLES for SAP 15 SP4 +11 more 3.2-150300.21.6.1
  • parted SLES LTSS Extended Security 12 SP5, SLES 12 SP5-LTSS 3.1-37.29.1

suse advisories SUSE-SU-2026:5117-1SUSE-SU-2026:5090-1

  • parted openSUSE Tumbleweed 3.8-1.1

opensuse advisories openSUSE-SU-2026:11924-1

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-2026-89085 updated cvss 6.6

parted: parted: Heap-based buffer overflow via crafted FAT32 filesystem image

  • Red Hat Enterprise Linux 6 parted
    affected: workaround, no fix planned “Out of support scope”
  • Red Hat Enterprise Linux 7 parted Red Hat Enterprise Linux 8 parted Red Hat Enterprise Linux 9 parted Red Hat Enterprise Linux 10 parted
    affected: workaround, no fix available “Fix deferred”

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
Proof of concept is public
Automatable
no
Technical impact
partial
Assessed
20 d ago

Exploit prediction

0.21% chance of exploitation in the next 30 days, higher than 10% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • bugzilla.redhat.com https://bugzilla.redhat.com/show_bug.cgi?id=2466034 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
CNA 3.1 6.6 CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:H

Affected products

  • Red Hat Red Hat Enterprise Linux 10
  • Red Hat Red Hat Enterprise Linux 6
  • Red Hat Red Hat Enterprise Linux 7
  • Red Hat Red Hat Enterprise Linux 8
  • Red Hat Red Hat Enterprise Linux 9

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.