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Vulnerability · Published Jan 28, 2020 · Assigned by mitre

CVE-2020-8428

High 7.1

In plain English

A high-severity security flaw in the linux package (Debian). There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.7% (higher than 53% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS NVD)7.1High
Exploit odds (30 days)0.7%top 47.4% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known

Official description

fs/namei.c in the Linux kernel before 5.5 has a may_create_in_sticky use-after-free, which allows local users to cause a denial of service (OOPS) or possibly obtain sensitive information from kernel memory, aka CID-d0cb50185ae9. One attack vector may be an open system call for a UNIX domain socket, if the socket is being moved to a new parent directory and its old parent directory is being removed.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
Debian:12linux5.4.19-1DEBIAN-CVE-2020-8428
Debian:13linux5.4.19-1DEBIAN-CVE-2020-8428
Debian:14linux5.4.19-1DEBIAN-CVE-2020-8428
Ubuntu:22.04:LTSlinux-intel-iot-realtimeno fix listedUBUNTU-CVE-2020-8428
Ubuntu:24.04:LTSlinux-raspi-realtimeno fix listedUBUNTU-CVE-2020-8428
Ubuntu:22.04:LTSlinux-realtimeno fix listedUBUNTU-CVE-2020-8428
Ubuntu:22.04:LTSlinux-riscvno fix listedUBUNTU-CVE-2020-8428

Affected products (as reported)

VendorProductVersions
n/a n/a n/a

References