Bug 2451607 - CVE-2026-33179 fuse-sshfs: libfuse: Denial of Service via NULL pointer dereference and memory leak [fedora-all]
Summary: CVE-2026-33179 fuse-sshfs: libfuse: Denial of Service via NULL pointer derefe...
Keywords:
Status: CLOSED CURRENTRELEASE
Alias: None
Product: Fedora
Classification: Fedora
Component: fuse3
Version: rawhide
Hardware: Unspecified
OS: Unspecified
medium
medium
Target Milestone: ---
Assignee: Peter Lemenkov
QA Contact: Fedora Extras Quality Assurance
URL:
Whiteboard: {"flaws": ["a486c466-2aca-42e2-acb4-d...
: 2451609 2451610 (view as bug list)
Depends On:
Blocks: CVE-2026-33179
TreeView+ depends on / blocked
 
Reported: 2026-03-26 05:44 UTC by Avinash Hanwate
Modified: 2026-03-26 10:45 UTC (History)
6 users (show)

Fixed In Version: fuse3-3.18.2-1.fc44
Clone Of:
Environment:
Last Closed: 2026-03-26 10:44:49 UTC
Type: ---
Embargoed:

Attachments (Terms of Use)

Description Avinash Hanwate 2026-03-26 05:44:16 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 10:35:02 UTC 
*** Bug 2451609 has been marked as a duplicate of this bug. ***
Comment 2 Peter Lemenkov 2026-03-26 10:35:12 UTC 
*** Bug 2451610 has been marked as a duplicate of this bug. ***
Comment 3 Peter Lemenkov 2026-03-26 10:44:49 UTC 
These CVEs affect libfuse3's io_uring subsystem, which was introduced in fuse3 3.18.0 and fixed in 3.18.2. Only fuse3 versions 3.18.0 and 3.18.1 are vulnerable.

fuse3-3.18.2 has already been built and pushed to stable for both rawhide (fuse3-3.18.2-1.fc45) and f44 (fuse3-3.18.2-1.fc44). f43 and older ship fuse3 3.16.x which does not include the io_uring subsystem and is not affected.
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