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Medium · 5.5 CVE-2026-93433 EUVD-2026-84117GHSA-x944-xgqc-pphj

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

Published Sep 21, 2026 · Updated Nov 6, 2026 · Assigned by redhat

Description

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.

Affected products

VendorProductAffectedFixed
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 — —

Fixed in Linux distributions

Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.

Amazon Linux

ReleasePackageFixed inAdvisory
Amazon Linux 2023 libstoragemgmt +10 1.9.4-5.amzn2023.0.3 ALAS2023-2026-3431

Azure Linux

ReleasePackageFixed inAdvisory
Azure Linux 3 libstoragemgmt No fix yet —

Advisories 1

References