Vulnetix
Try Vulnetix Request Demo
CVE-2020-10690 PUBLISHED

There is a use-after-free in kernel versions before 5.5 due to a race condition between the release of ptp_clock and cdev while resource deallocation. When a (high privileged) process allocates a ptp device file (like /dev/ptpX) and voluntarily goes to sleep. During this time if the underlying device is removed, it can cause an exploitable condition as the process wakes up to terminate and clean all attached files. The system crashes due to the cdev structure being invalid (as already freed) which is pointed to by the inode.

EPSS 0.13% · 31.9th percentile

Risk Scores

EPSS Score
0.13%
31.9th percentile

Affected Products

VendorProductVersions
Ubuntu:Pro:FIPS:16.04:LTSlinux-fips4.4.0-1015.20, 4.4.0-1017.22, 0
Ubuntu:16.04:LTSlinux-aws4.4.0-1109.120, 4.4.0-1090.101, 4.4.0-1106.117
Ubuntu:16.04:LTSlinux-oracle0, *, *
Ubuntu:18.04:LTSlinux-oracle-5.0*, 5.0.0-1014.19, *
Ubuntu:16.04:LTSlinux-hwe-edge4.13.0-16.19~16.04.3, 4.13.0-17.20~16.04.1, 4.13.0-19.22~16.04.1
Ubuntu:18.04:LTSlinux-oem4.15.0-1009.12, 4.15.0-1012.15, 4.15.0-1034.39
Ubuntu:18.04:LTSlinux-aws4.15.0-1020.20, 4.15.0-1009.9, 4.15.0-1031.33
Ubuntu:18.04:LTSlinux-raspi24.15.0-1010.11, 4.15.0-1049.53, 4.15.0-1048.52
Ubuntu:Pro:14.04:LTSlinux-azure4.15.0-1030.31~14.04.1, 0, 4.15.0-1041.45~14.04.1
Ubuntu:18.04:LTSlinux-aws-5.0*, 5.0.0-1027.30, 5.0.0-1025.28
Ubuntu:20.04:LTSlinux-gke5.4.0-1059.62, 5.4.0-1063.66, 5.4.0-1035.37
Ubuntu:Pro:FIPS-updates:18.04:LTSlinux-azure-fips4.15.0-1002.2, 0
Ubuntu:16.04:LTSlinux-azure4.13.0-1011.14, 4.13.0-1012.15, 4.13.0-1014.17
Ubuntu:Pro:14.04:LTSlinux-aws4.4.0-1003.3, 0, 4.4.0-1002.2
Ubuntu:18.04:LTSlinux-raspi2-5.35.3.0-1017.19~18.04.1, 0
Ubuntu:18.04:LTSlinux-hwe-edge5.0.0-20.21~18.04.1, 5.3.0-19.20~18.04.2, 5.3.0-22.24~18.04.1
Ubuntu:22.04:LTSlinux-realtime5.15.0-1032.35, 0
Ubuntu:18.04:LTSlinux-hwe4.18.0-21.22~18.04.1, 4.18.0-25.26~18.04.1, 5.0.0-25.26~18.04.1
Ubuntu:18.04:LTSlinux-snapdragon4.15.0-1070.77, 4.15.0-1054.58, 4.15.0-1066.73
Ubuntu:18.04:LTSlinux-kvm4.15.0-1043.43, 4.15.0-1020.20, 4.15.0-1021.21

…and 30 more

Timeline

References

Open in Interactive Console →