Bug 2430078

Summary: CVE-2026-0861 glibc: Integer overflow in memalign leads to heap corruption [fedora-43]
Product: [Fedora] Fedora Reporter: Guilherme de Almeida Suckevicz <gsuckevi>
Component: glibcAssignee: Florian Weimer <fweimer>
Status: CLOSED ERRATA QA Contact: Fedora Extras Quality Assurance <extras-qa>
Severity: low Docs Contact:
Priority: low    
Version: 43CC: arjun, codonell, dj, fberat, fweimer, jlaw, josmyers, mcermak, mcoufal, mfabian, pfrankli, sipoyare, skolosov, suraj.ghimire7
Target Milestone: ---Keywords: Security, SecurityTracking
Target Release: ---Flags: codonell: mirror+
Hardware: Unspecified   
OS: Unspecified   
Whiteboard: {"flaws": ["f06d781b-0779-4f8a-96b8-0738713751d4"]}
Fixed In Version: glibc-2.42-9.fc43 Doc Type: ---
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2026-01-26 00:49:55 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: 2429771    

Description Guilherme de Almeida Suckevicz 2026-01-15 17:50:08 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 2026-01-24 09:21:20 UTC 
FEDORA-2026-205d532069 (glibc-2.42-9.fc43) has been submitted as an update to Fedora 43.
https://bodhi.fedoraproject.org/updates/FEDORA-2026-205d532069
Comment 2 Fedora Update System 2026-01-25 01:49:53 UTC 
FEDORA-2026-205d532069 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-2026-205d532069`
You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2026-205d532069

See also https://fedoraproject.org/wiki/QA:Updates_Testing for more information on how to test updates.
Comment 3 Fedora Update System 2026-01-26 00:49:55 UTC 
FEDORA-2026-205d532069 (glibc-2.42-9.fc43) has been pushed to the Fedora 43 stable repository.
If problem still persists, please make note of it in this bug report.
Comment 4 Fedora Update System 2026-01-27 04:53:13 UTC 
FEDORA-2026-205d532069 (glibc-2.42-9.fc43) has been pushed to the Fedora 43 stable repository.
If problem still persists, please make note of it in this bug report.