High 7.1Published May 28, 2026

CVE-2026-46150fanotify: fix false positive on permission events

Updated under an hour ago (Oct 26, 2026, 1:40 PM ET)

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Exploited in the last 30 days

In the Linux kernel, the following vulnerability has been resolved: fanotify: fix false positive on permission events fsnotify_get_mark_safe() may return false for a mark on an unrelated group, which results in bypassing the permission check. Fix by skipping over detached marks that are not in the current group.

CVSS: 7.1 HIGH (v3.1, CNA)CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
Weakness (CWE): CWE-863
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: Linux
NVD analysis: Modified
Record last updated: Oct 19, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

Linux Linux linux:linux (from the name)	from abc77577a669f424c5d0c185b9994f2621c52aa4 before a24765332e129c1916d5a6615418b75599b8fcdc; from abc77577a669f424c5d0c185b9994f2621c52aa4 before 4a7611ad653785fcdea5ff5f4441e2b7d05b7f11; from abc77577a669f424c5d0c185b9994f2621c52aa4 before 04bb66be92f48ed13c3faf1139d892df228789bc; from abc77577a669f424c5d0c185b9994f2621c52aa4 before 895ebbedf88318607c24acc0f591c74b165e1d0a; from abc77577a669f424c5d0c185b9994f2621c52aa4 before f130790f1acc8399f32652846c875a251efd040f; from abc77577a669f424c5d0c185b9994f2621c52aa4 before 7baa02b0ae9d17ec5f08836d8ea88ce1927d0678; from abc77577a669f424c5d0c185b9994f2621c52aa4 before b7b24b28c8cd55844cab908f4f39dded638d5538; from abc77577a669f424c5d0c185b9994f2621c52aa4 before 7746e3bd4cc19b5092e00d32d676e329bfcb6900	CNA record
Siemens SIMATIC S7-1500 TM MFP - GNU/Linux subsystem siemens:simatic_s7_1500_tm_mfp_gnu_linux_subsystem (from the name)	all versions	CISA ADP
linux linux_kernel linux:linux_kernel	from 4.12 before 5.10.258; from 5.11 before 5.15.209; from 5.16 before 6.1.175; from 6.2 before 6.6.140; from 6.7 before 6.12.88; from 6.13 before 6.18.30; from 6.19 before 7.0.7; 7.1	NVD

References

References

https://git.kernel.org/stable/c/a24765332e129c1916d5a6615418b75599b8fcdc	patch
https://git.kernel.org/stable/c/4a7611ad653785fcdea5ff5f4441e2b7d05b7f11	patch
https://git.kernel.org/stable/c/04bb66be92f48ed13c3faf1139d892df228789bc	patch
https://git.kernel.org/stable/c/895ebbedf88318607c24acc0f591c74b165e1d0a	patch
https://git.kernel.org/stable/c/f130790f1acc8399f32652846c875a251efd040f	patch
https://git.kernel.org/stable/c/7baa02b0ae9d17ec5f08836d8ea88ce1927d0678	patch
https://git.kernel.org/stable/c/b7b24b28c8cd55844cab908f4f39dded638d5538	patch
https://git.kernel.org/stable/c/7746e3bd4cc19b5092e00d32d676e329bfcb6900	patch
https://cert-portal.siemens.com/productcert/html/ssa-784472.html

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.