mtd: afs: validate v2 image info bounds

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-89954
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-09-16 11:17:05 UTC
Updated2026-09-16 15:18:20 UTC
DescriptionIn the Linux kernel, the following vulnerability has been resolved: mtd: afs: validate v2 image info bounds The AFS v2 parser uses footer[8] to locate the image information block inside the current erase block, then uses the image information region_count to walk entries from a fixed local array. The footer offset and region count come from flash contents and are not checked against the erase block or the local image-info array before use. Reject v2 entries whose image information offset would underflow the erase block calculation, and reject region counts that cannot fit in the local image-info array before walking region entries.

Risk And Classification

Primary CVSS: v3.1 8 HIGH from 416baaa9-dc9f-4396-8d5f-8c081fb06d67

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

VersionSourceTypeScoreSeverityVector
3.1416baaa9-dc9f-4396-8d5f-8c081fb06d67Secondary8HIGHCVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:H
3.1CNADECLARED8HIGHCVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:H

CVSS v3.1 Breakdown

Attack Vector
Local
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
Low
Availability
High

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

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Linux Linux affected b7cf5e2830bbb128699d7635ce8404b7f605bc95 1bec05a68414cf8d0cab6cb42445b8603f32ffc4 git Not specified
CNA Linux Linux affected b7cf5e2830bbb128699d7635ce8404b7f605bc95 3ad8ff12fd44b08af9212ac4883a7e29d2ab7348 git Not specified
CNA Linux Linux affected b7cf5e2830bbb128699d7635ce8404b7f605bc95 875daa3c750814ff2e2dc050239c390048f0bcd0 git Not specified
CNA Linux Linux affected b7cf5e2830bbb128699d7635ce8404b7f605bc95 da740539e8f370767317e24615349b9342a6e773 git Not specified
CNA Linux Linux affected b7cf5e2830bbb128699d7635ce8404b7f605bc95 1edea8900ca3e405c1421d8b5c29f97107874f72 git Not specified
CNA Linux Linux affected b7cf5e2830bbb128699d7635ce8404b7f605bc95 18916f475057cbd2fb8ea6ae86e6b85884ad1d53 git Not specified
CNA Linux Linux affected b7cf5e2830bbb128699d7635ce8404b7f605bc95 d14e6298139f58a87a87d7022e26a7f37f0ddce7 git Not specified
CNA Linux Linux affected b7cf5e2830bbb128699d7635ce8404b7f605bc95 e9290031f736e99ad17c25c00311c92c266843b7 git Not specified
CNA Linux Linux affected 5.2 Not specified
CNA Linux Linux unaffected 5.2 semver Not specified
CNA Linux Linux unaffected 5.10.270 5.10.* semver Not specified
CNA Linux Linux unaffected 5.15.221 5.15.* semver Not specified
CNA Linux Linux unaffected 6.1.188 6.1.* semver Not specified
CNA Linux Linux unaffected 6.6.157 6.6.* semver Not specified
CNA Linux Linux unaffected 6.12.110 6.12.* semver Not specified
CNA Linux Linux unaffected 6.18.51 6.18.* semver Not specified
CNA Linux Linux unaffected 7.2.5 7.2.* semver Not specified
CNA Linux Linux unaffected 7.3-rc1 * original_commit_for_fix Not specified

References

ReferenceSourceLinkTags
git.kernel.org/stable/c/3ad8ff12fd44b08af9212ac4883a7e29d2ab7348 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/da740539e8f370767317e24615349b9342a6e773 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/1bec05a68414cf8d0cab6cb42445b8603f32ffc4 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/d14e6298139f58a87a87d7022e26a7f37f0ddce7 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/875daa3c750814ff2e2dc050239c390048f0bcd0 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/e9290031f736e99ad17c25c00311c92c266843b7 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/1edea8900ca3e405c1421d8b5c29f97107874f72 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/18916f475057cbd2fb8ea6ae86e6b85884ad1d53 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

© CVE.report 2026

Use of this information constitutes acceptance for use in an AS IS condition. There are NO warranties, implied or otherwise, with regard to this information or its use. Any use of this information is at the user's risk. It is the responsibility of user to evaluate the accuracy, completeness or usefulness of any information, opinion, advice or other content. EACH USER WILL BE SOLELY RESPONSIBLE FOR ANY consequences of his or her direct or indirect use of this web site. ALL WARRANTIES OF ANY KIND ARE EXPRESSLY DISCLAIMED. This site will NOT BE LIABLE FOR ANY DIRECT, INDIRECT or any other kind of loss.

CVE, CWE, and OVAL are registred trademarks of The MITRE Corporation and the authoritative source of CVE content is MITRE's CVE web site. This site includes MITRE data granted under the following license.

Free CVE JSON API cve.report/api

CVE.report and Source URL Uptime Status status.cve.report