01 Record

CVE-2026-46115

block: add pgmap check to biovec_phys_mergeable

CriticalPUBLISHEDCNA: Linux

CNA base score9.8 CVSS v3.xCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

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02 Description

block: add pgmap check to biovec_phys_mergeable

03 Exploitation and scoring

Exploitation

Assessed, none found. CISA's assessment recorded neither public exploit code nor evidence of exploitation when it was made.

SSVC decision

ExploitationnoneCISA recorded no public exploit code and no evidence of exploitation.
AutomatableyesAn attacker can reliably automate reconnaissance through exploitation, so this scales.
Technical ImpacttotalSuccessful exploitation gives total control of the vulnerable component.

CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.

EPSS probability

0.49% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 41.8% of scored records. A rank, not a probability.

NVD base score

9.8 (CVSS v3.x), scored by the NVD independently of the CNA.

NVD CVSS vector

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

NVD analysis status

Undergoing Analysis. NVD last modified this record on 2026-10-19.

Red Hat severity

Moderate. Red Hat's rating for its own products, not a CVSS rating.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

04 Metadata

Published

2026-05-28 09:35Z5 MO AGO

Last updated

2026-10-19 19:26Z9 DAYS AGO

Reserved

2026-05-13

Assigning CNA

Linux

Record state

PUBLISHED

Severity

Critical (CVSS 9.8)

CNA CVSS vector

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

Weaknesses

CWE-20Improper Input ValidationClass
CWE-372Incomplete Internal State DistinctionBase

Data version

5.2

Document digest

e2ed19928158325ffd6f2838c7eaabfa8af6d7aea2a81b714bf937d553b730a8

05 Affected products

VendorProductVersionsPlatforms

LinuxLinux49580e690755d0e51ed7aa2c33225dd884fa738a to < 3d2ecbd444b01d6500671d1a582b7393943cf539, 49580e690755d0e51ed7aa2c33225dd884fa738a to < a7f3aa8c9df3905fe820ae36b67ba56b81587574, 49580e690755d0e51ed7aa2c33225dd884fa738a to < f17d521075325b8afc42d1baa1c28a5e9aca111f, 49580e690755d0e51ed7aa2c33225dd884fa738a to < f632dab4b841554cd6416058c61886d7db176581, 49580e690755d0e51ed7aa2c33225dd884fa738a to < 13920e4b7b784b40cf4519ff1f0f3e513476a499, 6.2—

06 References

git.kernel.orghttps://git.kernel.org/stable/c/3d2ecbd444b01d6500671d1a582b7393943cf539
git.kernel.orghttps://git.kernel.org/stable/c/a7f3aa8c9df3905fe820ae36b67ba56b81587574
git.kernel.orghttps://git.kernel.org/stable/c/f17d521075325b8afc42d1baa1c28a5e9aca111f
git.kernel.orghttps://git.kernel.org/stable/c/f632dab4b841554cd6416058c61886d7db176581
git.kernel.orghttps://git.kernel.org/stable/c/13920e4b7b784b40cf4519ff1f0f3e513476a499

07 Fixed in

Debian 13

linux
Fixed in 6.12.88-1

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.

Debian 14

linux
Fixed in 7.0.7-1

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.