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CVE-2026-99086

dm-integrity: validate the superblock on resume

Products / packages Linux

Published

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Severity and exploitation

Not in CISA KEVNo CVSS score

KEV coverage does not rule out exploitation.

KEV checked 14/11/2026, 21:55:35 UTC

Severity

unknown

CVSS measures technical severity, not the likelihood of an attack.

Known exploitation

Not listed in the checked CISA KEV catalog

Absence from CISA KEV does not rule out attacks.

Public exploit

Not established by this record

Missing evidence does not mean no public exploit exists.

Remediation

Fix status not established

No structured fix or guidance is available here. Check the latest publisher advisory.

What this means

In the Linux kernel, the following vulnerability has been resolved:

Source excerpt · Linux

Attack conditions

No attack-condition excerpt has been identified here. Review the full source description and references for authentication, network access, and configuration requirements.

Review supporting sources →

Affected versions

Check the exact model, release, and any platform requirements against your installation.

Linux · Linux

Linux

12 ranges
Linux version evidence

Compare with this publisher’s ranges. This does not inspect your installation.

affected

c6138af1f5454c2631a837916fda958ea72c0d71 → before 0499b6d1c9d4477d6538b88c30f9d0c1a28b3e75

git versions

38625191f32f77a9d5fc7cc15f4f9b78768bfb33 → before 454b67fcc28c18502e47dfb9f067b04c28628ada

git versions

118ba36e446c01e3cd34b3eedabf1d9436525e1d → before e9ec5cbbaf4dd3a02ae3d81719f4fcb9b609aa8e

git versions

118ba36e446c01e3cd34b3eedabf1d9436525e1d → before fc79aeb86a2c244c1f1894e2d8f2966fe2b60fa2

git versions

824b9c27d7b600520b95f0cab95a47d1b08a9483

git versions

fb49f209995f729053c6ee728436f98d78a49b6f

git versions

3ff70e2e31c419e2230d0c66cb2bfb3b1b414b7f

git versions

6.12.75 → before 6.12.117

semver versions

6.18.16 → before 6.18.58

semver versions

6.1.165 → before 6.2

semver versions

6.6.128 → before 6.7

semver versions

6.19.6 → before 6.20

semver versions

unaffected

unknown

Other versions: unaffected

Linux · Linux

Linux

6 ranges
Linux version evidence

Compare with this publisher’s ranges. This does not inspect your installation.

affected

7.0

unaffected

0 → before 7.0

semver versions

6.12.117 → through 6.12.*

semver versions

6.18.58 → through 6.18.*

semver versions

7.2.12 → through 7.2.*

semver versions

7.3 → through *

original_commit_for_fix versions

unknown

Other versions: affected

Automatic dependency matching is unavailable for this record. Use the product evidence and publisher’s instructions to check your installation.

What to do

Compare your installed product and version with the affected versions above. A matching product name alone does not confirm exposure.

No structured fix or remediation guidance is available here. Check the full source description and vendor’s latest advisory for a patch or workaround; do not assume another version is safe.

cve.new guidance unless attributed to a publisher. This page does not inspect your installation.

Public exploit evidence

No public exploit reference is identified in the imported evidence. This is not a claim that no exploit exists.

Original source description

Read the full publisher description

In the Linux kernel, the following vulnerability has been resolved:

dm-integrity: validate the superblock on resume

dm_integrity_resume() re-reads the superblock from the device so that it picks up the flags and the recalculate position. It performs no validation on the result, while the constructor validates the superblock it reads and sizes all the in-memory structures according to it. The user may modify the superblock on the underlying device while the dm-integrity device is suspended, so that the two no longer agree.

In particular, access_journal_data() shifts the journal entry index by ic->sb->log2_sectors_per_block, while ic->journal_section_sectors and the journal page list were computed with the value that was present at constructor time. Increasing log2_sectors_per_block makes the index run past the end of the journal, and dm-integrity then writes 512 bytes through lowmem_page_address(NULL).

Snapshot the validated superblock in the constructor and refuse to resume if any of the fields that describe the on-disk geometry changed.

References

4 sources
git.kernel.org/stable/c/0499b6d1c9d4477d6538b88c30f9d0c1a28b3e75
Source referenceLinux
git.kernel.org/stable/c/454b67fcc28c18502e47dfb9f067b04c28628ada
Source referenceLinux
git.kernel.org/stable/c/e9ec5cbbaf4dd3a02ae3d81719f4fcb9b609aa8e
Source referenceLinux
git.kernel.org/stable/c/fc79aeb86a2c244c1f1894e2d8f2966fe2b60fa2
Source referenceLinux

Inside the record

Evidence available

Package identity · not supplied
Version evidence
Remediation guidance · not supplied
Weakness classification · not supplied
Additional publishers · not supplied

Describes the evidence in this view, not whether the product is safe.

Original records

CVE-2026-99086

View the latest unmodified CVE JSON from the official source. It may be newer than this imported page.

cve.new JSON →

Environment requirements

These conditions apply together as specified by the publisher. A matching product name alone does not establish exposure.

Linux · platform conditions

Any condition may hold

Vulnerable product

cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*

From (inclusive): 6.12.75

Before: 6.12.117

Vulnerable product

cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*

From (inclusive): 6.18.16

Before: 6.18.58

Vulnerable product

cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*

From (inclusive): 7.0

Before: 7.2.12

Vulnerable product

cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*

From (inclusive): 7.0

Before: 7.3

Vulnerable product

cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*

From (inclusive): 6.1.165

Vulnerable product

cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*

From (inclusive): 6.6.128

Vulnerable product

cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*

From (inclusive): 6.19.6

Applicability preview
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  {
    "nodes": [
      {
        "operator": "OR",
        "negate": false,
        "cpeMatch": [
          {
            "vulnerable": true,
            "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
            "versionStartIncluding": "6.12.75",
            "versionEndExcluding": "6.12.117"
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          {
            "vulnerable": true,
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            "vulnerable": true,
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            "versionStartIncluding": "7.0",
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          {
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            "versionStartIncluding": "7.0",
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            "vulnerable": true,
            "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
            "versionStartIncluding": "6.1.165"
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          {
            "vulnerable": true,
            "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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          },
          {
            "vulnerable": true,
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Contributing organizations · 1
Linux

Assigning organization

2026-11-10

Timeline

All times UTC

  1. Advisory published

    Publication date supplied by the source.

  2. Source updated

    Latest modification date supplied by the source.

  3. Last imported by cve.new

    Latest catalog import, not the date we first saw this advisory.

What changed

Follow changes
No substantive changes have been recorded here yet. History starts when cve.new observes a change after tracking is enabled; earlier edits are not reconstructed.

Large field values are marked as truncated previews. Original source snapshots remain retained.