CVE-2026-53149
Published Jun 25, 2026
Modified Jun 30, 2026
Description
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.
EPSS — Exploit Prediction
0.0018
Probability of exploitation
0.07%
Percentile rank
EPSS estimates the probability that this vulnerability will be exploited in the wild within the next 30 days. A higher score means more likely to be exploited.
References
Other References
https://git.kernel.org/stable/c/0a32040a48db8cf35de48b85d6115df5623e4964
https://git.kernel.org/stable/c/1912be23daf4afc8d24ce916021ab68ca4c679db
https://git.kernel.org/stable/c/4d0b1524caadb04c10a71f3f88692c63dcb39115
https://git.kernel.org/stable/c/5c7657d38d07268124782f03519f07c22a5814fb
https://git.kernel.org/stable/c/60ba6217460792356a238299edd675d91d46bab4
https://git.kernel.org/stable/c/65423079c7420e3dbf9a7aa345c243a3f5752e5d
https://git.kernel.org/stable/c/b212bc161d8a9937b42153723a4a3f2f74fab528
https://git.kernel.org/stable/c/cbeb68cbaa0a6f979ef428a7f2d0268c082ba166
Frequently Asked Questions
What is CVE-2026-53149? +
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.
How do I check if I'm vulnerable to CVE-2026-53149? +
You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.