CVE-2026-58382
Description
A flaw was found in GIMP's Jeff's Image Format (JIF) parser. A heap-based out-of-bounds write occurs in the ReadJeffsImage() function when a crafted JIF file supplies an invalid bits-per-pixel value that causes the unpack loop to write beyond the destination buffer. This could lead to memory corruption, potentially resulting in denial of service or arbitrary code execution.
Statement
A flaw was found in GIMP's Jeff's Image Format (JIF) parser. A heap out-of-bounds write in the ReadJeffsImage() function can lead to memory corruption, potentially resulting in denial of service or arbitrary code execution. Successful exploitation requires a user to open a specially crafted JIF file with a build that includes the JIF import path.
Mitigation
None — requires opening a crafted JIF/GIF file.
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 | NVD | cve.org | |
|---|---|---|---|
| Base Score | 7.3 | N/A | N/A |
| Attack Vector | Local | N/A | N/A |
| Attack Complexity | Low | N/A | N/A |
| Privileges Required | Low | N/A | N/A |
| User Interaction | Required | N/A | N/A |
| Scope | Unchanged | N/A | N/A |
| Confidentiality | High | N/A | N/A |
| Integrity Impact | High | N/A | N/A |
| Availability Impact | High | N/A | N/A |
Vector
Red Hat: CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H
Understanding the Weakness (CWE)
Integrity
Technical Impact: Modify Memory; Execute Unauthorized Code or Commands
Write operations could cause memory corruption. In some cases, an adversary can modify control data such as return addresses in order to execute unexpected code.
Availability
Technical Impact: DoS: Crash, Exit, or Restart
Attempting to access out-of-range, invalid, or unauthorized memory could cause the product to crash.
Other
Technical Impact: Unexpected State
Subsequent write operations can produce undefined or unexpected results.
Acknowledgements
Red Hat would like to thank bb1abu for reporting this issue.
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