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Fencer Vulns
medium 5.5

CVE-2026-93433 json

Libstoragemgmt: libstoragemgmt: denial of service via stack buffer overflow in scsi vpd page parsing

published 2026-09-21 48 d ago modified 2026-11-06 3 d ago also EUVD-2026-84117

cvss
5.5
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 4%
public exploits
0
none known

Summary

A flaw was found in libstoragemgmt. An attacker with control over a local or virtual storage device could provide specially crafted SCSI (Small Computer System Interface) Vital Product Data (VPD) page 0x80 data. This malformed data, specifically an untrusted page length field, can lead to a stack buffer overflow in the `_sg_parse_vpd_80()` function during serial number parsing. Successful exploitation could result in a denial of service by crashing or destabilizing the process querying the serial number.

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-2026-93433 updated cvss 5.5

libstoragemgmt: libstoragemgmt: Denial of Service via stack buffer overflow in SCSI VPD page parsing

  • Red Hat Enterprise Linux 7 libstoragemgmt, libstoragemgmt-udev, libstoragemgmt-python, libstoragemgmt-nfs-plugin, libstoragemgmt-hpsa-plugin, libstoragemgmt-smis-plugin, +8 more Red Hat Enterprise Linux 8 libstoragemgmt, libstoragemgmt-udev, python3-libstoragemgmt, libstoragemgmt-nfs-plugin, libstoragemgmt-hpsa-plugin, libstoragemgmt-smis-plugin, +7 more Red Hat Enterprise Linux 9 libstoragemgmt, libstoragemgmt-udev, python3-libstoragemgmt, libstoragemgmt-nfs-plugin, libstoragemgmt-hpsa-plugin, libstoragemgmt-smis-plugin, +4 more Red Hat Enterprise Linux 10 libstoragemgmt
    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
none
Automatable
no
Technical impact
partial
Assessed
45 d ago

Exploit prediction

0.15% chance of exploitation in the next 30 days, higher than 4% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 5.5 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Affected products

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

Classification

Weakness
  • CWE-121 Stack-based Buffer Overflow

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.