CVE-2025-6199: Exposure of Sensitive Information to an Unauthorized Actor
A flaw was found in the GIF parser of GdkPixbuf’s LZW decoder. When an invalid symbol is encountered during decompression, the decoder sets the reported output size to the full buffer length rather than the actual number of written bytes. This logic error results in uninitialized sections of the buffer being included in the output, potentially leaking arbitrary memory contents in the processed image.
AI Analysis
Technical Summary
The vulnerability in GdkPixbuf’s GIF parser arises from a logic error in the LZW decoder. When decompressing GIF images, if an invalid symbol is encountered, the decoder incorrectly sets the output size to the full buffer length rather than the actual number of bytes written. This causes uninitialized sections of memory to be included in the output image, potentially leaking sensitive information from memory buffers. The issue affects Red Hat Enterprise Linux 10 as indicated by the advisory. The CVSS score is 3.3, reflecting low impact primarily on confidentiality with no integrity or availability impact.
Potential Impact
An attacker who can cause the processing of crafted GIF images may obtain arbitrary memory contents from the affected system due to uninitialized buffer data being included in the output. This results in limited exposure of sensitive information. There is no impact on integrity or availability. The vulnerability requires local access (AV:L) and user interaction (UI:R) to exploit, limiting its risk.
Mitigation Recommendations
The vendor advisory does not explicitly state patch availability or remediation steps. Patch status is not yet confirmed — check the Red Hat advisory at https://access.redhat.com/security/cve/CVE-2025-6199 for current remediation guidance. Until a fix is applied, avoid processing untrusted GIF images with the affected GdkPixbuf LZW decoder to reduce risk.
CVE-2025-6199: Exposure of Sensitive Information to an Unauthorized Actor
Description
A flaw was found in the GIF parser of GdkPixbuf’s LZW decoder. When an invalid symbol is encountered during decompression, the decoder sets the reported output size to the full buffer length rather than the actual number of written bytes. This logic error results in uninitialized sections of the buffer being included in the output, potentially leaking arbitrary memory contents in the processed image.
CVSS v3.1
Score 3.3low
Affected software
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The vulnerability in GdkPixbuf’s GIF parser arises from a logic error in the LZW decoder. When decompressing GIF images, if an invalid symbol is encountered, the decoder incorrectly sets the output size to the full buffer length rather than the actual number of bytes written. This causes uninitialized sections of memory to be included in the output image, potentially leaking sensitive information from memory buffers. The issue affects Red Hat Enterprise Linux 10 as indicated by the advisory. The CVSS score is 3.3, reflecting low impact primarily on confidentiality with no integrity or availability impact.
Potential Impact
An attacker who can cause the processing of crafted GIF images may obtain arbitrary memory contents from the affected system due to uninitialized buffer data being included in the output. This results in limited exposure of sensitive information. There is no impact on integrity or availability. The vulnerability requires local access (AV:L) and user interaction (UI:R) to exploit, limiting its risk.
Mitigation Recommendations
The vendor advisory does not explicitly state patch availability or remediation steps. Patch status is not yet confirmed — check the Red Hat advisory at https://access.redhat.com/security/cve/CVE-2025-6199 for current remediation guidance. Until a fix is applied, avoid processing untrusted GIF images with the affected GdkPixbuf LZW decoder to reduce risk.
Technical Details
- Data Version
- 5.1
- Assigner Short Name
- redhat
- Date Reserved
- 2025-06-17T11:58:17.009Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Vendor Advisory Urls
- [{"url":"https://access.redhat.com/security/cve/CVE-2025-6199","vendor":"Red Hat"}]
Threat ID: 68517cf5a8c921274385d33e
Added to database: 06/17/2025, 14:34:29 UTC
Last enriched: 07/02/2026, 21:59:15 UTC
Last updated: 09/10/2026, 19:36:51 UTC
Views: 126
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