CVE-2026-8784: Symlink Following in npitre cramfs-tools
A vulnerability was detected in npitre cramfs-tools up to 2.2. Affected is the function change_file_status of the file cramfsck.c. Performing a manipulation results in symlink following. The attack requires a local approach. The exploit is now public and may be used. The patch is named b4a3a695c9873f824907bd15659f2a6ac7667b4f. It is recommended to apply a patch to fix this issue.
AI Analysis
Technical Summary
The vulnerability in npitre cramfs-tools (up to version 2.2) resides in the change_file_status function of cramfsck.c, where improper handling leads to symlink following. This can be exploited locally by an attacker with high privileges to manipulate file status operations. The issue has been publicly disclosed and an exploit exists. A patch commit b4a3a695c9873f824907bd15659f2a6ac7667b4f addresses the vulnerability.
Potential Impact
An attacker with local access and high privileges can exploit this vulnerability to perform symlink following, potentially leading to unauthorized file manipulations. The CVSS score of 4.6 indicates a medium impact with limited attack vector (local) and required privileges.
Mitigation Recommendations
A patch identified by commit b4a3a695c9873f824907bd15659f2a6ac7667b4f is available and it is recommended to apply this patch to remediate the vulnerability. Patch status is not explicitly confirmed in vendor advisory content, so users should verify the patch application from the official npitre cramfs-tools repository or vendor sources.
CVE-2026-8784: Symlink Following in npitre cramfs-tools
Description
A vulnerability was detected in npitre cramfs-tools up to 2.2. Affected is the function change_file_status of the file cramfsck.c. Performing a manipulation results in symlink following. The attack requires a local approach. The exploit is now public and may be used. The patch is named b4a3a695c9873f824907bd15659f2a6ac7667b4f. It is recommended to apply a patch to fix this issue.
CVSS v4.0
Score 4.6medium
Affected software
pkg:github/npitre/cramfs-toolsRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The vulnerability in npitre cramfs-tools (up to version 2.2) resides in the change_file_status function of cramfsck.c, where improper handling leads to symlink following. This can be exploited locally by an attacker with high privileges to manipulate file status operations. The issue has been publicly disclosed and an exploit exists. A patch commit b4a3a695c9873f824907bd15659f2a6ac7667b4f addresses the vulnerability.
Potential Impact
An attacker with local access and high privileges can exploit this vulnerability to perform symlink following, potentially leading to unauthorized file manipulations. The CVSS score of 4.6 indicates a medium impact with limited attack vector (local) and required privileges.
Mitigation Recommendations
A patch identified by commit b4a3a695c9873f824907bd15659f2a6ac7667b4f is available and it is recommended to apply this patch to remediate the vulnerability. Patch status is not explicitly confirmed in vendor advisory content, so users should verify the patch application from the official npitre cramfs-tools repository or vendor sources.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- VulDB
- Date Reserved
- 2026-05-17T09:59:14.863Z
- Cvss Version
- 4.0
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a0a8946ec166c07b04d87f7
Added to database: 05/18/2026, 03:36:38 UTC
Last enriched: 05/18/2026, 03:51:43 UTC
Last updated: 07/31/2026, 19:23:00 UTC
Views: 62
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