ethtool: coalesce: cap profile updates at NET_DIM_PARAMS_NUM_PROFILES

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-63987
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-07-19 16:17:17 UTC
Updated2026-07-20 15:17:00 UTC
DescriptionIn the Linux kernel, the following vulnerability has been resolved: ethtool: coalesce: cap profile updates at NET_DIM_PARAMS_NUM_PROFILES ethnl_update_profile() walks the ETHTOOL_A_PROFILE_IRQ_MODERATION nest list with an index 'i' and writes new_profile[i++] without bounding i. The destination is kmemdup()'d at NET_DIM_PARAMS_NUM_PROFILES entries (5), but the Netlink nest count is entirely user-controlled. Netlink policies do not have support for constraining the number of nested entries (or number of multi-attr entries).

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: 0.001680000 probability, percentile 0.063770000 (date 2026-07-20)

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

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Linux Linux affected f750dfe825b904164688adeb147950e0e0c4d262 d4c9cc7c47781c6f4fa29d80a1193a8bcd1525bc git Not specified
CNA Linux Linux affected f750dfe825b904164688adeb147950e0e0c4d262 0c02c190bcd9822477038ff2cee10ea584ac1b1d git Not specified
CNA Linux Linux affected f750dfe825b904164688adeb147950e0e0c4d262 6205f7166d2dd14a017a5802c81e5bd1421a8635 git Not specified
CNA Linux Linux affected f750dfe825b904164688adeb147950e0e0c4d262 7281b096b072f6c6e30420e3467d738f2e4c4b57 git Not specified
CNA Linux Linux affected 6.11 Not specified
CNA Linux Linux unaffected 6.11 semver Not specified
CNA Linux Linux unaffected 6.12.93 6.12.* semver Not specified
CNA Linux Linux unaffected 6.18.35 6.18.* semver Not specified
CNA Linux Linux unaffected 7.0.12 7.0.* semver Not specified
CNA Linux Linux unaffected 7.1 * original_commit_for_fix Not specified

References

ReferenceSourceLinkTags
git.kernel.org/stable/c/6205f7166d2dd14a017a5802c81e5bd1421a8635 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/d4c9cc7c47781c6f4fa29d80a1193a8bcd1525bc 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/7281b096b072f6c6e30420e3467d738f2e4c4b57 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/0c02c190bcd9822477038ff2cee10ea584ac1b1d 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
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