thunderbolt: Bound root directory content to block size
3Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackepss 0.1%
exploitation probability
0.1%top 97% of all CVEs
observed exploitation
nono source reports it
In the Linux kernel, the following vulnerability has been resolved:
thunderbolt: Bound root directory content to block size
__tb_property_parse_dir() does not check that content_offset +
content_len fits within block_len for the root directory case.
When rootdir->length equals or exceeds block_len - 2, the entry
loop reads past the allocated property block.
Add a bounds check after computing content_offset and content_len
to reject directories whose content extends past the block.
Affected products
Linux · LinuxReferences
https://git.kernel.org/stable/c/0a32040a48db8cf35de48b85d6115df5623e4964https://git.kernel.org/stable/c/1912be23daf4afc8d24ce916021ab68ca4c679dbhttps://git.kernel.org/stable/c/4d0b1524caadb04c10a71f3f88692c63dcb39115https://git.kernel.org/stable/c/5c7657d38d07268124782f03519f07c22a5814fbhttps://git.kernel.org/stable/c/60ba6217460792356a238299edd675d91d46bab4https://git.kernel.org/stable/c/65423079c7420e3dbf9a7aa345c243a3f5752e5dhttps://git.kernel.org/stable/c/b212bc161d8a9937b42153723a4a3f2f74fab528https://git.kernel.org/stable/c/cbeb68cbaa0a6f979ef428a7f2d0268c082ba166