ethtool: coalesce: cap profile updates at NET_DIM_PARAMS_NUM_PROFILES
In 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).
CVE-2026-63987
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: cve:CVE-2026-63987
Linux
Source reference: /containers/cna/affected/0/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Linux
Source reference: /containers/cna/affected/1/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "f750dfe825b904164688adeb147950e0e0c4d262",
"lessThan": "d4c9cc7c47781c6f4fa29d80a1193a8bcd1525bc",
"versionType": "git"
},
{
"status": "affected",
"version": "f750dfe825b904164688adeb147950e0e0c4d262",
"lessThan": "0c02c190bcd9822477038ff2cee10ea584ac1b1d",
"versionType": "git"
},
{
"status": "affected",
"version": "f750dfe825b904164688adeb147950e0e0c4d262",
"lessThan": "6205f7166d2dd14a017a5802c81e5bd1421a8635",
"versionType": "git"
},
{
"status": "affected",
"version": "f750dfe825b904164688adeb147950e0e0c4d262",
"lessThan": "7281b096b072f6c6e30420e3467d738f2e4c4b57",
"versionType": "git"
}
],
"programFiles": [
"net/ethtool/coalesce.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "6.11"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "6.11",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "6.12.93",
"versionType": "semver",
"lessThanOrEqual": "6.12.*"
},
{
"status": "unaffected",
"version": "6.18.35",
"versionType": "semver",
"lessThanOrEqual": "6.18.*"
},
{
"status": "unaffected",
"version": "7.0.12",
"versionType": "semver",
"lessThanOrEqual": "7.0.*"
},
{
"status": "unaffected",
"version": "7.1",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"net/ethtool/coalesce.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2026-63987
Source reference:
/cveMetadata/cveId
Publisher severity
high
Source reference: /containers/cna/metrics
- Event
- #40919 · Revision 1
- Added to Heist Feed
- Publisher date