CVE 2026 106062

A heap-based buffer overflow was found in GIMP’s DirectDraw Surface (DDS) loader. When loading a crafted DDS image, buffer sizes derived from width, height, and pitch can be computed using 32-bit arithmetic that overflows. The allocated buffer is too small for the amount of pixel data written through GEGL (CWE-787), following integer overflow in size calculations (CWE-190). This may allow heap corruption and, in the worst case, arbitrary code execution in the context of the GIMP process.

A heap-based buffer overflow was found in GIMP in the DDS image loader. A local attacker could provide a specially crafted DDS file that, when opened by the victim, causes GIMP to write past the end of a heap-allocated buffer. This could crash GIMP or potentially execute arbitrary code with the privileges of the user running GIMP. The attacker must convince the user to open the malicious file.

To mitigate this do not open DDS files from untrusted sources (CME-1311). Exploitation may be harder on hardened systems (Full RELRO/PIE, ASLR, FORTIFY_SOURCE, heap allocator protections) but the vulnerability remains.

Bugzilla 2546654 : gimp: GIMP: heap buffer overflow in DDS loader on crafted DirectDraw Surface file

CWE-119 : Improper Restriction of Operations within the Bounds of a Memory Buffer

Common Vulnerability Scoring System (CVSS) Score Details

Info alert: Important note

CVSS scores for open source components depend on vendor-specific factors (e.g. version or build chain). Therefore, Red Hat's score and impact rating can be different from NVD and other vendors. Red Hat remains the authoritative CVE Naming Authority (CNA) source for its products and services (see Red Hat classifications ).

The following CVSS metrics and score provided are preliminary and subject to review.

CVSS v3 Score Breakdown

Red Hat: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

cve.org: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Understanding the Weakness (CWE)

Integrity,Confidentiality,Availability

Technical Impact: Execute Unauthorized Code or Commands; Modify Memory

If the memory accessible by the attacker can be effectively controlled, it may be possible to execute arbitrary code, as with a standard buffer overflow. If the attacker can overwrite a pointer's worth of memory (usually 32 or 64 bits), they can alter the intended control flow by redirecting a function pointer to their own malicious code. Even when the attacker can only modify a single byte arbitrary code execution can be possible. Sometimes this is because the same problem can be exploited repeatedly to the same effect. Other times it is because the attacker can overwrite security-critical application-specific data -- such as a flag indicating whether the user is an administrator.

Availability,Confidentiality

Technical Impact: Read Memory; DoS: Crash, Exit, or Restart; DoS: Resource Consumption (CPU); DoS: Resource Consumption (Memory)

Out of bounds memory access will very likely result in the corruption of relevant memory, and perhaps instructions, possibly leading to a crash. Other attacks leading to lack of availability are possible, including putting the program into an infinite loop.

Technical Impact: Read Memory

In the case of an out-of-bounds read, the attacker may have access to sensitive information. If the sensitive information contains system details, such as the current buffer's position in memory, this knowledge can be used to craft further attacks, possibly with more severe consequences.

Red Hat would like to thank Jim Alves-Foss for reporting this issue.

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