erofs: fix order >= MAX_ORDER warning due to crafted negative i_size
3Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackepss 0.1%
exploitation probability
0.1%top 96% of all CVEs
observed exploitation
nono source reports it
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
Affected products
Linux · LinuxReferences
https://git.kernel.org/stable/c/0ab621fcdff1a58ff4de51a8590fa92a0ecd34behttps://git.kernel.org/stable/c/17a0cdbd7b0cf0fc0d7ca4187a67f8f1c18c291fhttps://git.kernel.org/stable/c/1dd73601a1cba37a0ed5f89a8662c90191df5873https://git.kernel.org/stable/c/6235fb899b25fd287d5e42635ff82196395708cchttps://git.kernel.org/stable/c/acc2f40b980c61a9178b72cdedd150b829064997https://git.kernel.org/stable/c/b6c8330f5b0f22149957a2e4977fd0f01a9db7cd