Buffer Overflow in libtiff Affects Remote Code Execution with PixarLog Images
CVE-2026-12912

7.3HIGH

Key Information:

Vendor

Red Hat
Status
Red Hat Enterprise Linux 10
Red Hat Enterprise Linux 10.0 Extended Update Support
Red Hat Enterprise Linux 7 Extended Lifecycle Support
Red Hat Enterprise Linux 8
Vendor
CVE Published:
29 June 2026

What is CVE-2026-12912?

A vulnerability has been identified in libtiff that allows a remote attacker to exploit a specially crafted PixarLog-compressed TIFF image. When decoding images with the PIXARLOGDATAFMT_8BITABGR output format, specifically with a certain stride value, this flaw can lead to a heap-based buffer overflow. Exploitation of this vulnerability could allow an attacker to execute arbitrary code or cause a denial of service (DoS), posing a serious risk to systems utilizing affected versions of the product.

Affected Version(s)

Red Hat Enterprise Linux 10 0:4.6.0-8.el10_2.4

Red Hat Enterprise Linux 10.0 Extended Update Support 0:4.6.0-6.el10_0.4

Red Hat Enterprise Linux 7 Extended Lifecycle Support 0:3.9.4-12.el7_9.3

References

https://access.redhat.com/errata/RHSA-2026:34890
vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:41892
vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:42668
vendor-advisoryx_refsource_REDHAT

CVSS V3.1

Score:
7.3
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Local
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
Required
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Red Hat would like to thank Ariel Schön for reporting this issue.
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