Bug 2451606

Summary:	CVE-2026-33179 fuse-sshfs: libfuse: Denial of Service via NULL pointer dereference and memory leak [epel-all]
Product:	[Fedora] Fedora EPEL	Reporter:	Avinash Hanwate <ahanwate>
Component:	fuse-sshfs	Assignee:	Peter Lemenkov <lemenkov>
Status:	CLOSED NOTABUG	QA Contact:	Fedora Extras Quality Assurance <extras-qa>
Severity:	medium	Docs Contact:
Priority:	medium
Version:	epel10	CC:	lemenkov, rjones, vascom2
Target Milestone:	---	Keywords:	Security, SecurityTracking
Target Release:	---
Hardware:	Unspecified
OS:	Unspecified
Whiteboard:	{"flaws": ["a486c466-2aca-42e2-acb4-d45783ded2f4"]}
Fixed In Version:		Doc Type:	---
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2026-03-26 10:41:06 UTC	Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:
Bug Blocks:	2449775

Description Avinash Hanwate 2026-03-26 05:44:11 UTC

Disclaimer: Community trackers are created by Red Hat Product Security team on a best effort basis. Package maintainers are required to ascertain if the flaw indeed affects their package, before starting the update process.

Comment 1 Peter Lemenkov 2026-03-26 10:34:53 UTC

*** Bug 2451608 has been marked as a duplicate of this bug. ***

Comment 2 Peter Lemenkov 2026-03-26 10:41:06 UTC

These CVEs affect libfuse3's io_uring subsystem, which was introduced in fuse3 3.18.0 and fixed in 3.18.2. fuse-sshfs itself is not vulnerable — it merely links against libfuse3 at runtime.

fuse3 is not available in EPEL, so there is nothing to fix here. EPEL ships fuse-sshfs linked against the base OS fuse3 package, which is an older version (pre-3.18.0) that does not include the io_uring subsystem and is therefore not affected.