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Vulnerability record · CVE-2026-53149 · published 25 June 2026

CVE-2026-53149: Linux kernel out-of-bounds read vulnerability

Linux · Linux Kernel

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.

7.1 CVSS 3.1 High EPSS 0.13% · top 98.1% CWE-125 · Out-of-bounds read
7.1CVSS 3.1 base score
0.13%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
8References
6 Jul 2026Last modified by NVD

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.

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://git.kernel.org/stable/c/0a32040a48db8cf35de48b85d6115df5623e4964 Patch
https://git.kernel.org/stable/c/1912be23daf4afc8d24ce916021ab68ca4c679db Patch
https://git.kernel.org/stable/c/4d0b1524caadb04c10a71f3f88692c63dcb39115 Patch
https://git.kernel.org/stable/c/5c7657d38d07268124782f03519f07c22a5814fb Patch
https://git.kernel.org/stable/c/60ba6217460792356a238299edd675d91d46bab4 Patch
https://git.kernel.org/stable/c/65423079c7420e3dbf9a7aa345c243a3f5752e5d Patch
https://git.kernel.org/stable/c/b212bc161d8a9937b42153723a4a3f2f74fab528 Patch
https://git.kernel.org/stable/c/cbeb68cbaa0a6f979ef428a7f2d0268c082ba166 Patch

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Source: NIST National Vulnerability Database (record CVE-2026-53149), CISA KEV, FIRST EPSS (scores of 2026-09-29). This page is refreshed as NVD updates the record.