Description
In the Linux kernel, the following vulnerability has been resolved:
erofs: fix order >= MAX_ORDER warning due to crafted negative i_size
As syzbot reported [1], the root cause is that i_size field is a signed type, and negative i_size is also less than EROFS_BLKSIZ. As a consequence, it's handled as fast symlink unexpectedly.
Let's fall back to the generic path to deal with such unusual i_size.
[1] https://lore.kernel.org/r/000000000000ac8efa05e7feaa1f@google.com
Metrics
CVSS 3.1 5.5/10
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:HAffected software
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux | >= 431339ba90423a038914c6032bfd71f0ba7ef2f2, < 17a0cdbd7b0cf0fc0d7ca4187a67f8f1c18c291f; >= 431339ba90423a038914c6032bfd71f0ba7ef2f2, < 0ab621fcdff1a58ff4de51a8590fa92a0ecd34be; >= 431339ba90423a038914c6032bfd71f0ba7ef2f2, < acc2f40b980c61a9178b72cdedd150b829064997; >= 431339ba90423a038914c6032bfd71f0ba7ef2f2, < b6c8330f5b0f22149957a2e4977fd0f01a9db7cd; >= 431339ba90423a038914c6032bfd71f0ba7ef2f2, < 6235fb899b25fd287d5e42635ff82196395708cc; >= 431339ba90423a038914c6032bfd71f0ba7ef2f2, < 1dd73601a1cba37a0ed5f89a8662c90191df5873 |
| Linux | Linux | 4.19 |
References
- https://git.kernel.org/stable/c/0ab621fcdff1a58ff4de51a8590fa92a0ecd34bePatch
- https://git.kernel.org/stable/c/17a0cdbd7b0cf0fc0d7ca4187a67f8f1c18c291fPatch
- https://git.kernel.org/stable/c/1dd73601a1cba37a0ed5f89a8662c90191df5873Patch
- https://git.kernel.org/stable/c/6235fb899b25fd287d5e42635ff82196395708ccPatch
- https://git.kernel.org/stable/c/acc2f40b980c61a9178b72cdedd150b829064997Patch
- https://git.kernel.org/stable/c/b6c8330f5b0f22149957a2e4977fd0f01a9db7cdPatch
Timeline
- Published
- Sep 15, 2025
- Last modified
- Jun 17, 2026
- NVD status
- Analyzed