CVE-2026-63987CWE-787

CVE-2026-63987

High · published July 19, 2026

CVSS v3.1
7.8
EPSS
0%
Percentile
2.3
In the wild
Unconfirmed
What it is

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).

The record
Technical detail
CVSS v3.1
7.8 · HIGH
Vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.00129 · 2.3th percentile
Weakness
CWE-787 · Out-of-bounds Write
Published
2026-07-19T20:17Z
Affected products (8)
ProductVersionsFixed in
linux/linux_kernel≥ 6.11, < 6.12.936.12.93
linux/linux_kernel≥ 6.13, < 6.18.356.18.35
linux/linux_kernel≥ 6.19, < 7.0.127.0.12
linux/linux_kernelall versions—
linux/linux_kernelall versions—
linux/linux_kernelall versions—
linux/linux_kernelall versions—
linux/linux_kernelall versions—
References (4)
https://git.kernel.org/stable/c/0c02c190bcd9822477038ff2cee10ea584ac1b1d · 416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/6205f7166d2dd14a017a5802c81e5bd1421a8635 · 416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/7281b096b072f6c6e30420e3467d738f2e4c4b57 · 416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/d4c9cc7c47781c6f4fa29d80a1193a8bcd1525bc · 416baaa9-dc9f-4396-8d5f-8c081fb06d67
EPSS history
Timeline
  • 19 JUL 14:56Z
    ethtool: coalesce: cap profile updates at NET_DIM_PARAMS_NUM_PROFILES
    cvelistv5