CVE-2026-8784
npitre cramfs-tools cramfsck.c change_file_status symlink
- State
- Published
- Severity
- 4.6 Medium
- Published
- May 18, 2026
- Updated
- May 18, 2026
- Reserved
- May 17, 2026
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 4.6 Medium | CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P | VulDB |
| 3.1 | 4.2 Medium | CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:L/E:P/RL:O/RC:C | VulDB |
| 3.0 | 4.2 Medium | CVSS:3.0/AV:L/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:L/E:P/RL:O/RC:C | VulDB |
| 2.0 | 4.0 Medium | AV:L/AC:L/Au:M/C:P/I:P/A:P/E:POC/RL:OF/RC:C | VulDB |
Weaknesses
Affected Products
| Product | Versions |
|---|---|
cramfs-toolsnpitre |
|
References
- VDB-364408 | npitre cramfs-tools cramfsck.c change_file_status symlinkvdb-entrytechnical-description
- VDB-364408 | CTI Indicators (IOB, IOC, IOA)signaturepermissions-required
- Submit #811897 | GNU cramfs-tools below v2.2 Symlink Followingthird-party-advisory
- https://github.com/npitre/cramfs-tools/issues/13exploitissue-tracking
- https://github.com/npitre/cramfs-tools/issues/13#issuecomment-4306102583issue-tracking
- https://github.com/npitre/cramfs-tools/commit/b4a3a695c9873f824907bd15659f2a6ac7667b4fpatch
- https://github.com/npitre/cramfs-tools/product
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