Bug 2427830 - CVE-2026-22184 tcl: zlib: Arbitrary code execution via buffer overflow in untgz utility [fedora-43]
Summary: CVE-2026-22184 tcl: zlib: Arbitrary code execution via buffer overflow in unt...
Keywords:
Status: CLOSED UPSTREAM
Alias: None
Product: Fedora
Classification: Fedora
Component: tcl
Version: 43
Hardware: Unspecified
OS: Unspecified
high
high
Target Milestone: ---
Assignee: Jaroslav Škarvada
QA Contact: Fedora Extras Quality Assurance
URL: https://core.tcl-lang.org/tcl/tktview...
Whiteboard: {"flaws": ["22c8540b-4d7b-47e6-940f-0...
Depends On:
Blocks: CVE-2026-22184
TreeView+ depends on / blocked
 
Reported: 2026-01-08 06:55 UTC by Sandipan Roy
Modified: 2026-01-26 14:58 UTC (History)
1 user (show)

Fixed In Version:
Clone Of:
Environment:
Last Closed: 2026-01-26 14:58:52 UTC
Type: ---
Embargoed:

Attachments (Terms of Use)

Description Sandipan Roy 2026-01-08 06:55:43 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.

The following link provides references to all essential vulnerability management information. If something is wrong or missing, please contact a member of PSIRT.
https://spaces.redhat.com/display/PRODSEC/Vulnerability+Management+-+Essential+Documents+for+Engineering+Teams
Comment 1 Jaroslav Škarvada 2026-01-26 14:55:23 UTC 
The untgz binary isn't built nor shipped in fedora. The example source code is shipped only in the SRPM. Notified upstream:
https://core.tcl-lang.org/tcl/tktview/0b9367a240

I.e. now it's only problem if the user explicitly builds the insecure binary from the example code in SRPM by hand.
Comment 2 Jaroslav Škarvada 2026-01-26 14:58:52 UTC 
Closing as upstream.
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