Bug 2451599

Summary: CVE-2026-33526 squid: Squid: Denial of Service via heap Use-After-Free vulnerability in ICP handling [fedora-all]
Product: [Fedora] Fedora Reporter: Sandipan Roy <saroy>
Component: squidAssignee: Luboš Uhliarik <luhliari>
Status: CLOSED ERRATA QA Contact: Fedora Extras Quality Assurance <extras-qa>
Severity: high Docs Contact:
Priority: high    
Version: rawhideCC: anon.amish, jonathansteffan, luhliari, tkorbar
Target Milestone: ---Keywords: Security, SecurityTracking
Target Release: ---   
Hardware: Unspecified   
OS: Unspecified   
Whiteboard: {"flaws": ["1ac2879c-cf29-44c7-b831-ef3f3d902657"]}
Fixed In Version: squid-7.5-1.fc44 squid-7.5-1.fc43 Doc Type: ---
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2026-05-06 00:50:33 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: 2451574    

Description Sandipan Roy 2026-03-26 05:14:31 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 Fedora Update System 2026-04-27 14:33:46 UTC
FEDORA-2026-e6a4814a4d (squid-7.5-1.fc43) has been submitted as an update to Fedora 43.
https://bodhi.fedoraproject.org/updates/FEDORA-2026-e6a4814a4d

Comment 2 Fedora Update System 2026-04-27 14:33:56 UTC
FEDORA-2026-c0590bd498 (squid-7.5-1.fc44) has been submitted as an update to Fedora 44.
https://bodhi.fedoraproject.org/updates/FEDORA-2026-c0590bd498

Comment 3 Fedora Update System 2026-04-28 02:11:47 UTC
FEDORA-2026-c0590bd498 has been pushed to the Fedora 44 testing repository.
Soon you'll be able to install the update with the following command:
`sudo dnf upgrade --enablerepo=updates-testing --refresh --advisory=FEDORA-2026-c0590bd498`
You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2026-c0590bd498

See also https://fedoraproject.org/wiki/QA:Updates_Testing for more information on how to test updates.

Comment 4 Fedora Update System 2026-04-28 02:52:42 UTC
FEDORA-2026-e6a4814a4d has been pushed to the Fedora 43 testing repository.
Soon you'll be able to install the update with the following command:
`sudo dnf upgrade --enablerepo=updates-testing --refresh --advisory=FEDORA-2026-e6a4814a4d`
You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2026-e6a4814a4d

See also https://fedoraproject.org/wiki/QA:Updates_Testing for more information on how to test updates.

Comment 5 Fedora Update System 2026-05-06 00:50:33 UTC
FEDORA-2026-c0590bd498 (squid-7.5-1.fc44) has been pushed to the Fedora 44 stable repository.
If problem still persists, please make note of it in this bug report.

Comment 6 Fedora Update System 2026-05-06 16:46:32 UTC
FEDORA-2026-e6a4814a4d (squid-7.5-1.fc43) has been pushed to the Fedora 43 stable repository.
If problem still persists, please make note of it in this bug report.