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NVD / CVE Program· CNA Linux

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

Noroxi assessment

Priority: Monitor (action score 28/100)

  • The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
  • Probability of exploitation in the next 30 days: 0.13% (FIRST EPSS).
  • Someone with local access to the system can trigger it. A low-privileged account is enough. No user action is required. No special conditions are required; it is repeatable.
  • Fixed version: Linux Linux 04bb66be92f48ed13c3faf1139d892df228789bc, 4a7611ad653785fcdea5ff5f4441e2b7d05b7f11, 7746e3bd4cc19b5092e00d32d676e329bfcb6900; azl3 kernel 6.6.139.1-1 on Azure Linux 3.0 6.6.141.1-1.
  • Mentioned 1 time in Turkish national cyber security advisories (siberguvenlik.gov.tr).

Low priority for now. Upgrade to Linux Linux 04bb66be92f48ed13c3faf1139d892df228789bc, 4a7611ad653785fcdea5ff5f4441e2b7d05b7f11, 7746e3bd4cc19b5092e00d32d676e329bfcb6900; azl3 kernel 6.6.139.1-1 on Azure Linux 3.0 6.6.141.1-1 or later.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

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.

HighCVSS 7.1 · v3.1—No exploit Fix available
Published
May 28, 2026
Updated
Oct 19, 2026
EPSS
0.1% · 2th percentile

Report tools

JSON

Action score

28

Monitor

Low priority for now.

CVSS
28 / 40 · 7.1 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.1%

CISA SSVC decision

Exploitation
none
Automatable
no
Technical impact
total

Vulnrichment: CISA's decision-tree inputs.

CNA vs NVD score

NVD
—
CNA · Linux
7.1
NVD has not scored this yet; the score shown is the CNA’s.

The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.

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  • Not in KEV: no record of exploitation in the wild
  • No public exploit code on record
  • A fix has been released

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When you'll hear from us

  • when it enters CISA KEV
  • when exploit code appears or is weaponized
  • when the record is updated (including a fixed version)
  • when EPSS rises 20 points in a week

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Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

VendorProduct
linuxlinux kernel

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • linux linux kernel4.12 and later · before 5.10.258
  • linux linux kernel5.11 and later · before 5.15.209
  • linux linux kernel5.16 and later · before 6.1.175
  • linux linux kernel6.2 and later · before 6.6.140
  • linux linux kernel6.7 and later · before 6.12.88
  • linux linux kernel6.13 and later · before 6.18.30
  • linux linux kernel6.19 and later · before 7.0.7
  • linux linux kernel7.1

Versions reported by the vendor

Affected version ranges reported by the assigning authority (Linux). Independent of NVD's CPE analysis and usually ahead of it.

  • Linux Linux

    • 4.12affected
    • abc77577a669f424c5d0c185b9994f2621c52aa4 and later · before a24765332e129c1916d5a6615418b75599b8fcdcaffected · git
    • abc77577a669f424c5d0c185b9994f2621c52aa4 and later · before 4a7611ad653785fcdea5ff5f4441e2b7d05b7f11affected · git
    • abc77577a669f424c5d0c185b9994f2621c52aa4 and later · before 04bb66be92f48ed13c3faf1139d892df228789bcaffected · git
    • abc77577a669f424c5d0c185b9994f2621c52aa4 and later · before 895ebbedf88318607c24acc0f591c74b165e1d0aaffected · git
    • abc77577a669f424c5d0c185b9994f2621c52aa4 and later · before f130790f1acc8399f32652846c875a251efd040faffected · git
    • abc77577a669f424c5d0c185b9994f2621c52aa4 and later · before 7baa02b0ae9d17ec5f08836d8ea88ce1927d0678affected · git
    • abc77577a669f424c5d0c185b9994f2621c52aa4 and later · before b7b24b28c8cd55844cab908f4f39dded638d5538affected · git
    • abc77577a669f424c5d0c185b9994f2621c52aa4 and later · before 7746e3bd4cc19b5092e00d32d676e329bfcb6900affected · git
    • before 4.12not affected · semver

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

EcosystemPackageAffected rangeFix
AlmaLinux:10kernelbefore 6.12.0-211.37.1.el10_26.12.0-211.37.1.el10_2
AlmaLinux:10kernel-64kbefore 6.12.0-211.37.1.el10_26.12.0-211.37.1.el10_2
AlmaLinux:10kernel-64k-corebefore 6.12.0-211.37.1.el10_26.12.0-211.37.1.el10_2
AlmaLinux:10kernel-64k-debugbefore 6.12.0-211.37.1.el10_26.12.0-211.37.1.el10_2
AlmaLinux:10kernel-64k-debug-corebefore 6.12.0-211.37.1.el10_26.12.0-211.37.1.el10_2
AlmaLinux:10kernel-64k-debug-develbefore 6.12.0-211.37.1.el10_26.12.0-211.37.1.el10_2
AlmaLinux:10kernel-64k-debug-devel-matchedbefore 6.12.0-211.37.1.el10_26.12.0-211.37.1.el10_2
AlmaLinux:10kernel-64k-debug-modulesbefore 6.12.0-211.37.1.el10_26.12.0-211.37.1.el10_2
AlmaLinux:10kernel-64k-debug-modules-corebefore 6.12.0-211.37.1.el10_26.12.0-211.37.1.el10_2
AlmaLinux:10kernel-64k-debug-modules-extrabefore 6.12.0-211.37.1.el10_26.12.0-211.37.1.el10_2
AlmaLinux:10kernel-64k-develbefore 6.12.0-211.37.1.el10_26.12.0-211.37.1.el10_2
AlmaLinux:10kernel-64k-devel-matchedbefore 6.12.0-211.37.1.el10_26.12.0-211.37.1.el10_2
AlmaLinux:10kernel-64k-modulesbefore 6.12.0-211.37.1.el10_26.12.0-211.37.1.el10_2
AlmaLinux:10kernel-64k-modules-corebefore 6.12.0-211.37.1.el10_26.12.0-211.37.1.el10_2
AlmaLinux:10kernel-64k-modules-extrabefore 6.12.0-211.37.1.el10_26.12.0-211.37.1.el10_2
AlmaLinux:10kernel-abi-stablelistsbefore 6.12.0-211.37.1.el10_26.12.0-211.37.1.el10_2
AlmaLinux:10kernel-corebefore 6.12.0-211.37.1.el10_26.12.0-211.37.1.el10_2
AlmaLinux:10kernel-cross-headersbefore 6.12.0-211.37.1.el10_26.12.0-211.37.1.el10_2
AlmaLinux:10kernel-debugbefore 6.12.0-211.37.1.el10_26.12.0-211.37.1.el10_2
AlmaLinux:10kernel-debug-corebefore 6.12.0-211.37.1.el10_26.12.0-211.37.1.el10_2
AlmaLinux:10kernel-debug-develbefore 6.12.0-211.37.1.el10_26.12.0-211.37.1.el10_2
AlmaLinux:10kernel-debug-devel-matchedbefore 6.12.0-211.37.1.el10_26.12.0-211.37.1.el10_2
AlmaLinux:10kernel-debug-modulesbefore 6.12.0-211.37.1.el10_26.12.0-211.37.1.el10_2
AlmaLinux:10kernel-debug-modules-corebefore 6.12.0-211.37.1.el10_26.12.0-211.37.1.el10_2

+96

Same product

linux: all records

Other highest-scoring records for the same primary product.

  • CVE-2026-31431crypto: algif_aead - Revert to operating out-of-placeKEV
    90Now
  • CVE-2022-0847A flaw was found in the way the "flags" member of the new pipe buffer structure was lacking proper initialization in copy_page_to_iter_pipe KEV
    89Now
  • CVE-2021-22555Heap Out-Of-Bounds Write in Netfilter IP6T_SO_SET_REPLACEKEV
    85Now

Published before and after this one in the same product

  • ← EarlierCVE-2026-46148May 28, 2026 · spi: microchip-core-qspi: control built-in cs manually
    22Monitor
  • ← EarlierCVE-2026-46149May 28, 2026 · scsi: target: configfs: Bound snprintf() return in tg_pt_gp_members_show()
    28Monitor
  • Later →CVE-2026-46151May 28, 2026 · usb: usblp: fix heap leak in IEEE 1284 device ID via short response
    22Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / packageFixed versionSource
Linux Linux04bb66be92f48ed13c3faf1139d892df228789bcVendor (CNA)
Linux Linux4a7611ad653785fcdea5ff5f4441e2b7d05b7f11Vendor (CNA)
Linux Linux7746e3bd4cc19b5092e00d32d676e329bfcb6900Vendor (CNA)
Linux Linux7baa02b0ae9d17ec5f08836d8ea88ce1927d0678Vendor (CNA)
Linux Linux895ebbedf88318607c24acc0f591c74b165e1d0aVendor (CNA)
Linux Linuxa24765332e129c1916d5a6615418b75599b8fcdcVendor (CNA)
Linux Linuxb7b24b28c8cd55844cab908f4f39dded638d5538Vendor (CNA)
Linux Linuxf130790f1acc8399f32652846c875a251efd040fVendor (CNA)
azl3 kernel 6.6.139.1-1 on Azure Linux 3.06.6.141.1-1 · CBL-Mariner ReleasesMicrosoft (MSRC)
almalinux:kernel6.12.0-211.37.1.el10_2 · AlmaLinux:10Package registry (OSV)
almalinux:kernel-64k6.12.0-211.37.1.el10_2 · AlmaLinux:10Package registry (OSV)
almalinux:kernel-64k-core6.12.0-211.37.1.el10_2 · AlmaLinux:10Package registry (OSV)
almalinux:kernel-64k-debug6.12.0-211.37.1.el10_2 · AlmaLinux:10Package registry (OSV)
almalinux:kernel-64k-debug-core6.12.0-211.37.1.el10_2 · AlmaLinux:10Package registry (OSV)
almalinux:kernel-64k-debug-devel6.12.0-211.37.1.el10_2 · AlmaLinux:10Package registry (OSV)
almalinux:kernel-64k-debug-devel-matched6.12.0-211.37.1.el10_2 · AlmaLinux:10Package registry (OSV)
almalinux:kernel-64k-debug-modules6.12.0-211.37.1.el10_2 · AlmaLinux:10Package registry (OSV)
almalinux:kernel-64k-debug-modules-core6.12.0-211.37.1.el10_2 · AlmaLinux:10Package registry (OSV)
almalinux:kernel-64k-debug-modules-extra6.12.0-211.37.1.el10_2 · AlmaLinux:10Package registry (OSV)
almalinux:kernel-64k-devel6.12.0-211.37.1.el10_2 · AlmaLinux:10Package registry (OSV)
almalinux:kernel-64k-devel-matched6.12.0-211.37.1.el10_2 · AlmaLinux:10Package registry (OSV)
debian:linux6.1.176-1 · Debian:12Package registry (OSV)
red hat:kernel-64k-debug-debuginfo0:6.12.0-211.37.1.el10_2 · Red Hat:enterprise_linux:10.2Package registry (OSV)
red hat:kernel-64k-debug-devel0:6.12.0-211.37.1.el10_2 · Red Hat:enterprise_linux:10.2Package registry (OSV)
red hat:kernel-64k-debug-devel-matched0:6.12.0-211.37.1.el10_2 · Red Hat:enterprise_linux:10.2Package registry (OSV)
red hat:kernel-64k-debuginfo0:6.12.0-211.37.1.el10_2 · Red Hat:enterprise_linux:10.2Package registry (OSV)
red hat:kernel-64k-devel0:6.12.0-211.37.1.el10_2 · Red Hat:enterprise_linux:10.2Package registry (OSV)
red hat:kernel-64k-devel-matched0:6.12.0-211.37.1.el10_2 · Red Hat:enterprise_linux:10.2Package registry (OSV)
red hat:kernel-debug-debuginfo0:6.12.0-211.37.1.el10_2 · Red Hat:enterprise_linux:10.2Package registry (OSV)
red hat:kernel-debug-devel0:6.12.0-211.37.1.el10_2 · Red Hat:enterprise_linux:10.2Package registry (OSV)

+18

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

No history yet (it accumulates with the daily EPSS job).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

No credits in the CNA record.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

  • CVE-2026-6383052 days apartnet: skmsg: preserve sg.copy across SG transforms
    37Monitor
  • CVE-2026-4333420 days apartBluetooth: SMP: force responder MITM requirements before building the pairing response
    35Monitor
  • CVE-2026-5307527 days apartppp: require CAP_NET_ADMIN in target netns for unattached ioctls
    35Monitor
  • CVE-2026-460761 days apartKVM: nSVM: Raise #UD if unhandled VMMCALL isn't intercepted by L1
    31Monitor
  • CVE-2026-5290922 days apartip6_vti: set netns_immutable on the fallback device.
    31Monitor

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

National notice (Türkiye Cybersecurity Directorate / USOM)

Official security notices citing this record; remediation advice is on the agency's page.

All national notices →

Technical details

Attack conditions

  • Someone with local access to the system can trigger it.
  • A low-privileged account is enough.
  • No user action is required.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
high · data can be read
Integrity
high · data or configuration can be modified
Availability
none
Attack vector
Local
Attack complexity
Low
Privileges required
Low
User interaction
None
Scope
Unchanged
Confidentiality impact
High
Integrity impact
High
Availability impact
None

Weakness class (CWE)

CWE-863 · Incorrect Authorization

CVSS vector

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

nvd-secondary

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

MITRE has no CAPEC/ATT&CK mapping for this CWE.

Change log

  1. SSVC exploitation— → none
  2. Fix✗ → ✓

For records you follow, these changes also arrive as notifications. →

References

Show all references (8 more)

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records