Answer in brief
CVE-2026-63987 records a Unknown severity vulnerability in ethtool: coalesce: cap profile updates at NET_DIM_PARAMS_NUM_PROFILES. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
A CVSS score is not reported in the current record. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=f750dfe825b904164688adeb147950e0e0c4d262 <d4c9cc7c47781c6f4fa29d80a1193a8bcd1525bc || >=f750dfe825b904164688adeb147950e0e0c4d262 <0c02c190bcd9822477038ff2cee10ea584ac1b1d || >=f750dfe825b904164688adeb147950e0e0c4d262 <6205f7166d2dd14a017a5802c81e5bd1421a8635 || >=f750dfe825b904164688adeb147950e0e0c4d262 <7281b096b072f6c6e30420e3467d738f2e4c4b57 | d4c9cc7c47781c6f4fa29d80a1193a8bcd1525bc, 0c02c190bcd9822477038ff2cee10ea584ac1b1d, 6205f7166d2dd14a017a5802c81e5bd1421a8635, 7281b096b072f6c6e30420e3467d738f2e4c4b57 |
| Linux/Linuxgeneric | 6.11 | Not reported |
Published upstream
Jul 19, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 5, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 5, 2026
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).
Quoted source text, attributed separately from HOL analysis.
Answer in brief
CVE-2026-63987 records a Unknown severity vulnerability in ethtool: coalesce: cap profile updates at NET_DIM_PARAMS_NUM_PROFILES. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
A CVSS score is not reported in the current record. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=f750dfe825b904164688adeb147950e0e0c4d262 <d4c9cc7c47781c6f4fa29d80a1193a8bcd1525bc || >=f750dfe825b904164688adeb147950e0e0c4d262 <0c02c190bcd9822477038ff2cee10ea584ac1b1d || >=f750dfe825b904164688adeb147950e0e0c4d262 <6205f7166d2dd14a017a5802c81e5bd1421a8635 || >=f750dfe825b904164688adeb147950e0e0c4d262 <7281b096b072f6c6e30420e3467d738f2e4c4b57 | d4c9cc7c47781c6f4fa29d80a1193a8bcd1525bc, 0c02c190bcd9822477038ff2cee10ea584ac1b1d, 6205f7166d2dd14a017a5802c81e5bd1421a8635, 7281b096b072f6c6e30420e3467d738f2e4c4b57 |
| Linux/Linuxgeneric | 6.11 | Not reported |
Published upstream
Jul 19, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 5, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 5, 2026
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).
Quoted source text, attributed separately from HOL analysis.