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Vulnerability · Published May 8, 2020 · Assigned by redhat

CVE-2020-10690

Medium 6.5

In plain English

A medium-severity use-after-free in kernel from Red Hat. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 30% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)6.5Medium
Exploit odds (30 days)0.4%top 70.2% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known

Official description

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.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
Debian:12linux5.4.8-1DEBIAN-CVE-2020-10690
Debian:13linux5.4.8-1DEBIAN-CVE-2020-10690
Debian:14linux5.4.8-1DEBIAN-CVE-2020-10690
Ubuntu:22.04:LTSlinux-intel-iot-realtimeno fix listedUBUNTU-CVE-2020-10690
Ubuntu:24.04:LTSlinux-raspi-realtimeno fix listedUBUNTU-CVE-2020-10690
Ubuntu:22.04:LTSlinux-realtimeno fix listedUBUNTU-CVE-2020-10690
Ubuntu:22.04:LTSlinux-riscvno fix listedUBUNTU-CVE-2020-10690

Affected products (as reported)

VendorProductVersions
Red Hat kernel all kernel versions before 5.5

Weakness: CWE-416 · Vector: CVSS:3.1/AV:L/AC:L/PR:H/UI:R/S:U/C:H/I:H/A:H

References