CVE-2026-63987
7.8
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Summary
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).
Affected Software
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Linux | Linux | f750dfe825b904164688adeb147950e0e0c4d262 < d4c9cc7c47781c6f4fa29d80a1193a8bcd1525bc | affected |
| Linux | Linux | f750dfe825b904164688adeb147950e0e0c4d262 < 0c02c190bcd9822477038ff2cee10ea584ac1b1d | affected |
| Linux | Linux | f750dfe825b904164688adeb147950e0e0c4d262 < 6205f7166d2dd14a017a5802c81e5bd1421a8635 | affected |
| Linux | Linux | f750dfe825b904164688adeb147950e0e0c4d262 < 7281b096b072f6c6e30420e3467d738f2e4c4b57 | affected |
| Linux | Linux | 6.11 | affected |
| Linux | Linux | 0 < 6.11 | unaffected |
| Linux | Linux | 6.12.93 <= 6.12.* | unaffected |
| Linux | Linux | 6.18.35 <= 6.18.* | unaffected |
| Linux | Linux | 7.0.12 <= 7.0.* | unaffected |
| Linux | Linux | 7.1 <= * | unaffected |
Weaknesses
References
- https://git.kernel.org/stable/c/d4c9cc7c47781c6f4fa29d80a1193a8bcd1525bc
- https://git.kernel.org/stable/c/0c02c190bcd9822477038ff2cee10ea584ac1b1d
- https://git.kernel.org/stable/c/6205f7166d2dd14a017a5802c81e5bd1421a8635
- https://git.kernel.org/stable/c/7281b096b072f6c6e30420e3467d738f2e4c4b57
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