CVE-2016-9604 PUBLISHED

It was discovered in the Linux kernel before 4.11-rc8 that root can gain direct access to an internal keyring, such as '.dns_resolver' in RHEL-7 or '.builtin_trusted_keys' upstream, by joining it as its session keyring. This allows root to bypass module signature verification by adding a new public key of its own devising to the keyring.

EPSS 0.02% · 4.7th percentile

Risk Scores

EPSS Score
0.02%
4.7th percentile

Affected Products

VendorProductVersions
Ubuntu:20.04:LTSlinux-riscv0, 5.4.0-39.44, 5.4.0-40.45
Ubuntu:24.04:LTSlinux-hwe-6.116.11.0-19.19~24.04.1, 6.11.0-21.21~24.04.1, 6.11.0-24.24~24.04.1
Ubuntu:18.04:LTSlinux-hwe4.18.0-22.23~18.04.1, 4.18.0-21.22~18.04.1, 4.18.0-20.21~18.04.1
Ubuntu:24.04:LTSlinux-azure-6.116.11.0-1015.15~24.04.1, 6.11.0-1017.17~24.04.1, 0
Ubuntu:20.04:LTSlinux-gke5.4.0-1076.82, 5.4.0-1054.57, 5.4.0-1055.58
Ubuntu:18.04:LTSlinux-gcp4.15.0-1042.45, 4.15.0-1040.42, 4.15.0-1037.39
Ubuntu:Pro:20.04:LTSlinux-azure-fde-5.155.15.0-1078.87~20.04.1.1, 5.15.0-1103.112~20.04.1.1, 5.15.0-1102.111~20.04.1.1
Ubuntu:20.04:LTSlinux-azure-fde0, 5.4.0-1063.66+cvm2.2, 5.4.0-1063.66+cvm3.2
Ubuntu:20.04:LTSlinux-raspi25.3.0-1017.19, 5.3.0-1015.17, 5.3.0-1014.16
Ubuntu:16.04:LTSlinux-snapdragon4.4.0-1057.61, 4.4.0-1058.62, 4.4.0-1047.51
Ubuntu:16.04:LTSlinux-hwe4.10.0-30.34~16.04.1, 0, 4.8.0-36.36~16.04.1
Ubuntu:24.04:LTSlinux-gcp-6.110, 6.11.0-1014.14~24.04.1, 6.11.0-1015.15~24.04.1
Ubuntu:16.04:LTSlinux4.4.0-22.39, 4.4.0-78.99, 4.4.0-77.98
Ubuntu:16.04:LTSlinux-gke4.4.0-1010.10, 4.4.0-1003.3, 4.4.0-1005.6
Ubuntu:22.04:LTSlinux-realtime0, 5.15.0-1032.35
Ubuntu:22.04:LTSlinux-riscv5.15.0-1012.13, 5.15.0-1028.32, 5.15.0-1027.31
Ubuntu:24.04:LTSlinux-lowlatency-hwe-6.116.11.0-1016.17~24.04.1, 6.11.0-1015.16~24.04.2, 6.11.0-1014.15~24.04.1
Ubuntu:14.04:LTSlinux3.13.0-85.129, 3.11.0-12.19, 3.12.0-1.3
Ubuntu:24.04:LTSlinux-raspi-realtime0, 6.8.0-2019.20
Ubuntu:14.04:LTSlinux-lts-xenial4.4.0-22.39~14.04.1, 4.4.0-21.37~14.04.1, 4.4.0-18.34~14.04.1

…and 6 more

Timeline

References

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