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CVE Vulnerabilities

CVE-2026-12912

Heap-based Buffer Overflow

Published: Jun 29, 2026 | Modified: Aug 14, 2026
CVSS 3.x
N/A
Source:
NVD
CVSS 2.x
RedHat/V2
RedHat/V3
7.3 IMPORTANT
CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H
Ubuntu
MEDIUM
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Additional information
NVDhttps://nvd.nist.gov/vuln/detail/CVE-2026-12912
CWEhttps://cwe.mitre.org/data/definitions/122.html

A flaw was found in libtiff. A remote attacker could exploit this vulnerability by providing a specially crafted PixarLog-compressed TIFF image. This issue occurs when decoding Pixarlog codec images with the PIXARLOGDATAFMT_8BITABGR output format and a specific stride value, leading to a heap-based buffer overflow. This could potentially result in arbitrary code execution or a denial of service (DoS).

Weakness

A heap overflow condition is a buffer overflow, where the buffer that can be overwritten is allocated in the heap portion of memory, generally meaning that the buffer was allocated using a routine such as malloc().

Affected Software

NameVendorStart VersionEnd Version
Red Hat Enterprise Linux 10RedHatlibtiff-0:4.6.0-8.el10_2.4*
Red Hat Enterprise Linux 10.0 Extended Update SupportRedHatlibtiff-0:4.6.0-6.el10_0.4*
Red Hat Enterprise Linux 8RedHatcompat-libtiff3-0:3.9.4-16.el8_10*
Red Hat Enterprise Linux 8RedHatlibtiff-0:4.0.9-38.el8_10*
Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update SupportRedHatcompat-libtiff3-0:3.9.4-13.el8_4.3*
Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-OnRedHatcompat-libtiff3-0:3.9.4-13.el8_4.3*
Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update SupportRedHatcompat-libtiff3-0:3.9.4-13.el8_6.3*
Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-OnRedHatcompat-libtiff3-0:3.9.4-13.el8_6.3*
Red Hat Enterprise Linux 8.8 Telecommunications Update ServiceRedHatcompat-libtiff3-0:3.9.4-13.el8_8.3*
Red Hat Enterprise Linux 8.8 Update Services for SAP SolutionsRedHatcompat-libtiff3-0:3.9.4-13.el8_8.3*
Red Hat Enterprise Linux 9RedHatlibtiff-0:4.4.0-18.el9_8.1*
Red Hat Enterprise Linux 9.6 Extended Update SupportRedHatlibtiff-0:4.4.0-13.el9_6.6*
Red Hat Hardened ImagesRedHatlibtiff-main-4.7.1-2.4.hum1*
Qtwebengine-opensource-srcUbuntuquesting*
TexmakerUbuntuquesting*
TiffUbuntuquesting*

Potential Mitigations

  • Use automatic buffer overflow detection mechanisms that are offered by certain compilers or compiler extensions. Examples include: the Microsoft Visual Studio /GS flag, Fedora/Red Hat FORTIFY_SOURCE GCC flag, StackGuard, and ProPolice, which provide various mechanisms including canary-based detection and range/index checking.
  • D3-SFCV (Stack Frame Canary Validation) from D3FEND [REF-1334] discusses canary-based detection in detail.
  • Run or compile the software using features or extensions that randomly arrange the positions of a program’s executable and libraries in memory. Because this makes the addresses unpredictable, it can prevent an attacker from reliably jumping to exploitable code.
  • Examples include Address Space Layout Randomization (ASLR) [REF-58] [REF-60] and Position-Independent Executables (PIE) [REF-64]. Imported modules may be similarly realigned if their default memory addresses conflict with other modules, in a process known as “rebasing” (for Windows) and “prelinking” (for Linux) [REF-1332] using randomly generated addresses. ASLR for libraries cannot be used in conjunction with prelink since it would require relocating the libraries at run-time, defeating the whole purpose of prelinking.
  • For more information on these techniques see D3-SAOR (Segment Address Offset Randomization) from D3FEND [REF-1335].

References

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