Bug 2453212
| Summary: | CVE-2026-4046 glibc: glibc: Denial of Service via iconv() function with specific character sets [fedora-all] | ||
|---|---|---|---|
| Product: | [Fedora] Fedora | Reporter: | Jon Moroney <jmoroney> |
| Component: | glibc | Assignee: | Carlos O'Donell <codonell> |
| Status: | CLOSED CURRENTRELEASE | QA Contact: | Fedora Extras Quality Assurance <extras-qa> |
| Severity: | medium | Docs Contact: | |
| Priority: | medium | ||
| Version: | rawhide | CC: | arjun, ashankar, codonell, dj, fberat, fweimer, jlaw, josmyers, mcermak, mcoufal, mfabian, pfrankli, sipoyare, skolosov, suraj.ghimire7 |
| Target Milestone: | --- | Keywords: | Security, SecurityTracking |
| Target Release: | --- | ||
| Hardware: | Unspecified | ||
| OS: | Unspecified | ||
| Whiteboard: | {"flaws": ["6c33fc1f-0df3-4a0a-b92d-25ee1fd6fe9f"]} | ||
| Fixed In Version: | glibc-2.42-12.fc43 glibc-2.43-4.fc44 glibc-2.43.9000-12.fc45 | Doc Type: | --- |
| Doc Text: | Story Points: | --- | |
| Clone Of: | Environment: | ||
| Last Closed: | 2026-05-29 13:27:00 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: | 2453117 | ||
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Description
Jon Moroney
2026-03-30 21:06:06 UTC
As upstream CNA, the severity of "High" seems excessive even in the general case. The only impact here is a DoS and it can easily be mitigated by (in the Red Hat context) dropping the glibc-gconv-extra package or minimally disabling the two gconv errant plugins; those converters are not in common use anyway. The top-level security bug 2453117 is set to "Medium" severity. I'm adjusting this to match. FEDORA-2026-ced72ab158 (glibc-2.43-4.fc44) has been submitted as an update to Fedora 44. https://bodhi.fedoraproject.org/updates/FEDORA-2026-ced72ab158 FEDORA-2026-4b7780802c (glibc-2.42-12.fc43) has been submitted as an update to Fedora 43. https://bodhi.fedoraproject.org/updates/FEDORA-2026-4b7780802c FEDORA-2026-ced72ab158 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-ced72ab158` You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2026-ced72ab158 See also https://fedoraproject.org/wiki/QA:Updates_Testing for more information on how to test updates. FEDORA-2026-ced72ab158 (glibc-2.43-4.fc44) has been pushed to the Fedora 44 stable repository. If problem still persists, please make note of it in this bug report. FEDORA-2026-4b7780802c 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-2026-4b7780802c` You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2026-4b7780802c See also https://fedoraproject.org/wiki/QA:Updates_Testing for more information on how to test updates. FEDORA-2026-4b7780802c (glibc-2.42-12.fc43) has been pushed to the Fedora 43 stable repository. If problem still persists, please make note of it in this bug report. This is also fixed in rawhide with glibc-2.43.9000-12.fc45. |