i2c: s3c24xx: check the size of the SMBUS message before using it

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Summary

CVECVE-2026-31627
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-04-24 15:16:42 UTC
Updated2026-04-27 20:43:43 UTC
DescriptionIn the Linux kernel, the following vulnerability has been resolved: i2c: s3c24xx: check the size of the SMBUS message before using it The first byte of an i2c SMBUS message is the size, and it should be verified to ensure that it is in the range of 0..I2C_SMBUS_BLOCK_MAX before processing it. This is the same logic that was added in commit a6e04f05ce0b ("i2c: tegra: check msg length in SMBUS block read") to the i2c tegra driver.

Risk And Classification

Primary CVSS: v3.1 7.8 HIGH from 416baaa9-dc9f-4396-8d5f-8c081fb06d67

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

EPSS: 0.000180000 probability, percentile 0.048130000 (date 2026-04-27)

Problem Types: NVD-CWE-noinfo

VersionSourceTypeScoreSeverityVector
3.1416baaa9-dc9f-4396-8d5f-8c081fb06d67Secondary7.8HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
3.1CNADECLARED7.8HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CVSS v3.1 Breakdown

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

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

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Operating System Linux Linux Kernel All All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Linux Linux affected 85747311ecb6167c989093c64a13807366fdd3a9 fa00738ab30b07db1a43b9c85fc56b8cc3b7d197 git Not specified
CNA Linux Linux affected 85747311ecb6167c989093c64a13807366fdd3a9 d87d5620125a03b1eadbd5df39748215d3db7ddb git Not specified
CNA Linux Linux affected 85747311ecb6167c989093c64a13807366fdd3a9 377fae22a137b6b89f3f32399a58c52cf2325416 git Not specified
CNA Linux Linux affected 85747311ecb6167c989093c64a13807366fdd3a9 71b3c316b22c555d2769126a92b1244b15a9750d git Not specified
CNA Linux Linux affected 85747311ecb6167c989093c64a13807366fdd3a9 aaaaec39ddbcd06770dca7f1adebc3b1242ebe7b git Not specified
CNA Linux Linux affected 85747311ecb6167c989093c64a13807366fdd3a9 c0128c7157d639a931353ea344fb44aad6d6e17a git Not specified
CNA Linux Linux affected 3.10 Not specified
CNA Linux Linux unaffected 3.10 semver Not specified
CNA Linux Linux unaffected 6.6.136 6.6.* semver Not specified
CNA Linux Linux unaffected 6.12.83 6.12.* semver Not specified
CNA Linux Linux unaffected 6.18.24 6.18.* semver Not specified
CNA Linux Linux unaffected 6.19.14 6.19.* semver Not specified
CNA Linux Linux unaffected 7.0.1 7.0.* semver Not specified
CNA Linux Linux unaffected 7.1-rc1 * original_commit_for_fix Not specified

References

ReferenceSourceLinkTags
git.kernel.org/stable/c/d87d5620125a03b1eadbd5df39748215d3db7ddb 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/71b3c316b22c555d2769126a92b1244b15a9750d 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/c0128c7157d639a931353ea344fb44aad6d6e17a 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/aaaaec39ddbcd06770dca7f1adebc3b1242ebe7b 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/377fae22a137b6b89f3f32399a58c52cf2325416 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/fa00738ab30b07db1a43b9c85fc56b8cc3b7d197 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
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