VDB
RHSA-2026:51061
RHSA-2026:51061
PUBLISHED
CVSS 7.300000190734863 HIGH
Record from redhat · Published August 6, 2026
A flaw was found in libXfont2. In the BitmapScaleBitmaps() function, an integer overflow can occur when calculating the memory needed for font glyphs. This overflow leads to a heap buffer overflow, where a smaller-than-required memory buffer is allocated. A local attacker can exploit this by loading a specially crafted PCF font, potentially leading to arbitrary code execution or a denial of service.
Risk scores
CVSS 3.1
7.300000190734863
CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H
Affected products
| Vendor | Product | Versions |
|---|---|---|
| Red Hat | libXfont2-debuginfo-0:2.0.6-5.el10_0.1.x86_64 as a component of Red Hat Enterprise Linux CodeReady Linux Builder EUS (v. 10.0) | 0:2.0.6-5.el10_0.1 |
| Red Hat | libXfont2-debuginfo-0:2.0.6-5.el10_0.1.ppc64le as a component of Red Hat Enterprise Linux CodeReady Linux Builder EUS (v. 10.0) | 0:2.0.6-5.el10_0.1 |
| Red Hat | libXfont2-debugsource-0:2.0.6-5.el10_0.1.aarch64 as a component of Red Hat Enterprise Linux CodeReady Linux Builder EUS (v. 10.0) | 0:2.0.6-5.el10_0.1 |
| Red Hat | libXfont2-0:2.0.6-5.el10_0.1.src as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0) | 0:2.0.6-5.el10_0.1 |
| Red Hat | libXfont2-devel-0:2.0.6-5.el10_0.1.ppc64le as a component of Red Hat Enterprise Linux CodeReady Linux Builder EUS (v. 10.0) | 0:2.0.6-5.el10_0.1 |
| Red Hat | libXfont2-debugsource-0:2.0.6-5.el10_0.1.ppc64le as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0) | 0:2.0.6-5.el10_0.1 |
| Red Hat | libXfont2-debugsource-0:2.0.6-5.el10_0.1.aarch64 as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0) | 0:2.0.6-5.el10_0.1 |
| Red Hat | libXfont2-debuginfo-0:2.0.6-5.el10_0.1.s390x as a component of Red Hat Enterprise Linux CodeReady Linux Builder EUS (v. 10.0) | 0:2.0.6-5.el10_0.1 |
| Red Hat | libXfont2-0:2.0.6-5.el10_0.1.s390x as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0) | 0:2.0.6-5.el10_0.1 |
| Red Hat | libXfont2-debugsource-0:2.0.6-5.el10_0.1.x86_64 as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0) | 0:2.0.6-5.el10_0.1 |
| Red Hat | libXfont2-debuginfo-0:2.0.6-5.el10_0.1.x86_64 as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0) | 0:2.0.6-5.el10_0.1 |
| Red Hat | libXfont2-0:2.0.6-5.el10_0.1.ppc64le as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0) | 0:2.0.6-5.el10_0.1 |
| Red Hat | libXfont2-devel-0:2.0.6-5.el10_0.1.x86_64 as a component of Red Hat Enterprise Linux CodeReady Linux Builder EUS (v. 10.0) | 0:2.0.6-5.el10_0.1 |
| Red Hat | libXfont2-debugsource-0:2.0.6-5.el10_0.1.s390x as a component of Red Hat Enterprise Linux CodeReady Linux Builder EUS (v. 10.0) | 0:2.0.6-5.el10_0.1 |
| Red Hat | libXfont2-debuginfo-0:2.0.6-5.el10_0.1.ppc64le as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0) | 0:2.0.6-5.el10_0.1 |
| Red Hat | libXfont2-0:2.0.6-5.el10_0.1.x86_64 as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0) | 0:2.0.6-5.el10_0.1 |
| Red Hat | libXfont2-debugsource-0:2.0.6-5.el10_0.1.x86_64 as a component of Red Hat Enterprise Linux CodeReady Linux Builder EUS (v. 10.0) | 0:2.0.6-5.el10_0.1 |
| Red Hat | libXfont2-debuginfo-0:2.0.6-5.el10_0.1.s390x as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0) | 0:2.0.6-5.el10_0.1 |
| Red Hat | libXfont2-devel-0:2.0.6-5.el10_0.1.s390x as a component of Red Hat Enterprise Linux CodeReady Linux Builder EUS (v. 10.0) | 0:2.0.6-5.el10_0.1 |
| Red Hat | libXfont2-debugsource-0:2.0.6-5.el10_0.1.s390x as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0) | 0:2.0.6-5.el10_0.1 |
…and 5 more
Timeline
- Aug 6, 2026 CVE Published
- Aug 6, 2026 CVE Updated
- Aug 6, 2026 Distribution Patch (2 in total, the first dated here)
- Aug 6, 2026 Security Advisory (4 in total, the first dated here)
Query this with the API
The same record, from the CLI:
vulnetix vdb vuln RHSA-2026:51061
vulnetix vdb fixes RHSA-2026:51061Or with curl, using the org id and key from your account page:
curl -s -H "Authorization: ApiKey ${VULNETIX_ORG_ID}:${VULNETIX_API_KEY}" \
"https://api.vdb.vulnetix.com/v2/vuln/RHSA-2026%3A51061/fixes/registry"The Community plan is free and allows 50 queries a day. Get a free API key · API quickstart
References
- https://access.redhat.com/errata/RHSA-2026:51061 advisory
- https://access.redhat.com/security/updates/classification/#important advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=2496640 issue
- https://bugzilla.redhat.com/show_bug.cgi?id=2496641 issue
- https://bugzilla.redhat.com/show_bug.cgi?id=2496642 issue
- https://security.access.redhat.com/data/csaf/v2/advisories/2026/rhsa-2026_51061.json advisory
- https://access.redhat.com/security/cve/CVE-2026-56001 advisory
- https://www.cve.org/CVERecord?id=CVE-2026-56001 advisory
- https://nvd.nist.gov/vuln/detail/CVE-2026-56001 advisory
- https://access.redhat.com/security/cve/CVE-2026-56002 advisory
- https://www.cve.org/CVERecord?id=CVE-2026-56002 advisory
- https://nvd.nist.gov/vuln/detail/CVE-2026-56002 advisory
- https://access.redhat.com/security/cve/CVE-2026-56003 advisory
- https://www.cve.org/CVERecord?id=CVE-2026-56003 advisory
- https://nvd.nist.gov/vuln/detail/CVE-2026-56003 advisory