How severe is CVE-2026-46161?

CVE-2026-46161 has a CVSS 3.x base score of 5.5, rated medium severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2026-46161 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (3rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-46161?

CVE-2026-46161 primarily affects Linux Linux Kernel. In total, 10 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2026-46161?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2026-46161 have an EU (EUVD) identifier?

Yes. CVE-2026-46161 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-32788.

When was CVE-2026-46161 published?

CVE-2026-46161 was published on 2026-05-28 and last updated on 2026-06-17.

CVE-2026-46161

CVE-2026-46161 is a medium-severity vulnerability in Linux Linux Kernel with a CVSS 3.x base score of 5.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-369.

Key facts

Severity: Medium (CVSS 3.x base score 5.5)
EPSS exploit prediction: 0% (3rd percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-32788
Weakness: CWE-369
Affected product: Linux Linux Kernel
Published: 2026-05-28
Last modified: 2026-06-17

Description

In the Linux kernel, the following vulnerability has been resolved: md/raid10: fix divide-by-zero in setup_geo() with zero far_copies setup_geo() extracts near_copies (nc) and far_copies (fc) from the user-provided layout parameter without checking for zero. When fc=0 with the "improved" far set layout selected, 'geo->far_set_size = disks / fc' triggers a divide-by-zero. Validate nc and fc immediately after extraction, returning -1 if either is zero.

Frequently asked questions

What is CVE-2026-46161?: In the Linux kernel, the following vulnerability has been resolved: md/raid10: fix divide-by-zero in setup_geo() with zero far_copies setup_geo() extracts near_copies (nc) and far_copies (fc) from the user-provided layout parameter without checking for zero. When fc=0 with the "improved" far set layout selected, 'geo->far_set_size = disks / fc' triggers a divide-by-zero. Validate nc and fc immediately after extraction, returning -1 if either is zero.
How severe is CVE-2026-46161?: CVE-2026-46161 has a CVSS 3.x base score of 5.5, rated medium severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2026-46161 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (3rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-46161?: CVE-2026-46161 primarily affects Linux Linux Kernel. In total, 10 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2026-46161?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-46161 have an EU (EUVD) identifier?: Yes. CVE-2026-46161 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-32788.
When was CVE-2026-46161 published?: CVE-2026-46161 was published on 2026-05-28 and last updated on 2026-06-17.

References

Affected products (10)

cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:3.9:-:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:3.9:rc2:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:3.9:rc3:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:3.9:rc4:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:3.9:rc5:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:3.9:rc6:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:3.9:rc7:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:3.9:rc8:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:7.1:rc1:*:*:*:*:*:*

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