01 Record

CVE-2026-89573

dm array: reject an array block whose value size is not the caller's

HighPUBLISHEDCNA: Linux

CNA base score7.8 CVSS v3.xCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

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02 Description

dm array: reject an array block whose value size is not the caller's

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.
AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
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

0.12% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 2.1% of scored records. A rank, not a probability.

NVD base score

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

NVD CVSS vector

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

NVD analysis status

Received. 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

2026-09-11 19:44Z1 MO AGO

Last updated

2026-10-19 08:49Z10 DAYS AGO

Reserved

2026-09-11

Assigning CNA

Linux

Record state

PUBLISHED

Severity

High (CVSS 7.8)

CNA CVSS vector

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

Weaknesses

CWE-843Access of Resource Using Incompatible Type ('Type Confusion')Base

Data version

5.2

Document digest

6ce1635cb87cc3c63ed6d03d477fd3b428a8894cddd8722a1206c0910acbe63b

05 Affected products

VendorProductVersionsPlatforms

LinuxLinux6513c29f44f2cc970c0e9fecfe5a6526c3e73025 to < 35cd3b278448c79614f65ab6bbc9ed348d847df9, 6513c29f44f2cc970c0e9fecfe5a6526c3e73025 to < a8237cb8fa0a628d903e76635bfdeae4202036b9, 6513c29f44f2cc970c0e9fecfe5a6526c3e73025 to < a530a9a419a7c5fdb7dae55ffa2dd7a130631842, 6513c29f44f2cc970c0e9fecfe5a6526c3e73025 to < 522fa26da24ccaa298ebe3c1c97395d2d63dfc21, 6513c29f44f2cc970c0e9fecfe5a6526c3e73025 to < 7bf4b5cb42a4e27f36bcbc6209d82a5da9c0168c, 6513c29f44f2cc970c0e9fecfe5a6526c3e73025 to < ac4a5eb8b002a0742c938fc98b922e243f53573a, 6513c29f44f2cc970c0e9fecfe5a6526c3e73025 to < cb409b38b0232ee4385ef55cddcd6fbdd011a8a2, 6513c29f44f2cc970c0e9fecfe5a6526c3e73025 to < 4538a287bdf5d0f9a379c678e5262b9f5783f547, 3.9—

06 References

git.kernel.orghttps://git.kernel.org/stable/c/35cd3b278448c79614f65ab6bbc9ed348d847df9
git.kernel.orghttps://git.kernel.org/stable/c/a8237cb8fa0a628d903e76635bfdeae4202036b9
git.kernel.orghttps://git.kernel.org/stable/c/a530a9a419a7c5fdb7dae55ffa2dd7a130631842
git.kernel.orghttps://git.kernel.org/stable/c/522fa26da24ccaa298ebe3c1c97395d2d63dfc21
git.kernel.orghttps://git.kernel.org/stable/c/7bf4b5cb42a4e27f36bcbc6209d82a5da9c0168c
git.kernel.orghttps://git.kernel.org/stable/c/ac4a5eb8b002a0742c938fc98b922e243f53573a
git.kernel.orghttps://git.kernel.org/stable/c/cb409b38b0232ee4385ef55cddcd6fbdd011a8a2
git.kernel.orghttps://git.kernel.org/stable/c/4538a287bdf5d0f9a379c678e5262b9f5783f547

07 Fixed in

Debian 12

linux
Fixed in 6.1.190-1
linux-6.12
Fixed in 6.12.111-1~deb12u1

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

Debian 13

linux
Fixed in 6.12.111-1

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

Debian 14

linux
Fixed in 7.2.6-1

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