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NVD / CVE Program· CNA Linux

CVE-2026-89997: dm: fix resume-vs-remove race

Noroxi assessment

Priority: Monitor (action score 31/100)

  • 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: 0.16% (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 1ede2bce2bd640605df83db1356fd727159bc9ed, 2.6.36, 36177beff2a9df035991ad8d16ccf8d363ed93ee.
  • Mentioned 1 time in Turkish national cyber security advisories (siberguvenlik.gov.tr).

Low priority for now. Upgrade to Linux Linux 1ede2bce2bd640605df83db1356fd727159bc9ed, 2.6.36, 36177beff2a9df035991ad8d16ccf8d363ed93ee 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: dm: fix resume-vs-remove race If the user issues the resume ioctl and the remove ioctl at the same time, it may be possible that the device is resumed after it is suspended in __dm_destroy. The result is that the table is destroyed without calling the postsuspend method. Dm targets expect that they may be removed only after the postsuspend method method was called. If we break this expectation, it can cause misbehavior in various targets. For example - in the dm-integrity target, the reboot notifier is not unregistered, leading to use-after-free. Fix this bug by refusing to resume if the device is being destroyed.

HighCVSS 7.8 · v3.1—No exploit Fix available
Published
Sep 16, 2026
Updated
Oct 19, 2026
EPSS
0.1% · 5th percentile
CWE
—

Report tools

JSON

Action score

31

Monitor

Low priority for now.

CVSS
31 / 40 · 7.8 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.1%

CNA vs NVD score

NVD
—
CNA · Linux
7.8
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

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  • 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.

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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

    • 305b06f7334dd43bc952b525d7232f4cae7c3818, 2.6.36affected
    • 3f77316de0ec0fd208467fbee8d9edc70e2c73b2 and later · before 9757367bcf1d5d2c50b94d005abca21f3eedd7c3affected · git
    • 3f77316de0ec0fd208467fbee8d9edc70e2c73b2 and later · before 1ede2bce2bd640605df83db1356fd727159bc9edaffected · git
    • 3f77316de0ec0fd208467fbee8d9edc70e2c73b2 and later · before 3f04e6520d9a53adb1d1daf4dc5d31a60fc77d1faffected · git
    • 3f77316de0ec0fd208467fbee8d9edc70e2c73b2 and later · before 94f3d399c1ddba763c1c5a6501f7375d533d789faffected · git
    • 3f77316de0ec0fd208467fbee8d9edc70e2c73b2 and later · before 3b59530b14fde693e41d8e39bc326df6cbf07b76affected · git
    • 3f77316de0ec0fd208467fbee8d9edc70e2c73b2 and later · before 36177beff2a9df035991ad8d16ccf8d363ed93eeaffected · git
    • 3f77316de0ec0fd208467fbee8d9edc70e2c73b2 and later · before 94380ecd5ff9b2a2b9f6e8a0b5c465159ccfaf71affected · git
    • 3f77316de0ec0fd208467fbee8d9edc70e2c73b2 and later · before 44b43ec132f1cf3275ecc182d0c82f50c3c4c3d5affected · git
    • 2.6.35.4 and later · before 2.6.36affected · semver

Package-level exposure

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

EcosystemPackageAffected rangeFix
Debian:12linuxbefore 6.1.190-16.1.190-1
Debian:12linux-6.12before 6.12.111-1~deb12u16.12.111-1~deb12u1
Debian:13linuxbefore 6.12.111-16.12.111-1
Debian:14linuxbefore 7.2.6-17.2.6-1

Same product

linux: all records

Other highest-scoring records for the same primary product.

  • CVE-2026-74705udp: fix potential use-after-free in tunnel segmentation
    40Plan
  • CVE-2026-74612veth: fix skb length accounting after XDP frag adjustment
    40Plan
  • CVE-2026-74475vxlan: use neigh_ha_snapshot() in route_shortcircuit()
    40Plan

Published before and after this one in the same product

  • ← EarlierCVE-2026-89995Sep 16, 2026 · dma-direct: return struct page from dma_direct_alloc_from_pool()
    35Monitor
  • ← EarlierCVE-2026-89996Sep 16, 2026 · dma-buf: dma-heap: don't publish fd before copy_to_user() succeeds
    0Monitor
  • Later →CVE-2026-89998Sep 16, 2026 · dm: fix race when loading and unloading a table
    31Monitor

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 Linux1ede2bce2bd640605df83db1356fd727159bc9edVendor (CNA)
Linux Linux2.6.36Vendor (CNA)
Linux Linux36177beff2a9df035991ad8d16ccf8d363ed93eeVendor (CNA)
Linux Linux3b59530b14fde693e41d8e39bc326df6cbf07b76Vendor (CNA)
Linux Linux3f04e6520d9a53adb1d1daf4dc5d31a60fc77d1fVendor (CNA)
Linux Linux44b43ec132f1cf3275ecc182d0c82f50c3c4c3d5Vendor (CNA)
Linux Linux94380ecd5ff9b2a2b9f6e8a0b5c465159ccfaf71Vendor (CNA)
Linux Linux94f3d399c1ddba763c1c5a6501f7375d533d789fVendor (CNA)
Linux Linux9757367bcf1d5d2c50b94d005abca21f3eedd7c3Vendor (CNA)
debian:linux6.1.190-1 · Debian:12Package registry (OSV)
debian:linux6.12.111-1 · Debian:13Package registry (OSV)
debian:linux-6.126.12.111-1~deb12u1 · Debian:12Package registry (OSV)

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.

EPSS, last 120 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

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.

No nightly-computed relations.

Chain candidates

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

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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
high · the service can be disrupted
Attack vector
Local
Attack complexity
Low
Privileges required
Low
User interaction
None
Scope
Unchanged
Confidentiality impact
High
Integrity impact
High
Availability impact
High

Weakness class (CWE)

—

CVSS vector

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

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. Fix✗ → ✓

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

References

Show all references (7 more)

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

All records