Vulnerability · Published Dec 3, 2020 · Assigned by redhat
CVE-2020-14351
High 7.8
In plain English
A high-severity use-after-free in kernel. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 23% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS NVD)7.8High
Exploit odds (30 days)0.3%top 76.5% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known
Official description
A flaw was found in the Linux kernel. A use-after-free memory flaw was found in the perf subsystem allowing a local attacker with permission to monitor perf events to corrupt memory and possibly escalate privileges. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| AlmaLinux:8 | kernel-tools-libs-devel | 4.18.0-240.15.1.el8_3 | ALSA-2021:0558 |
| Debian:12 | linux | 5.9.6-1 | DEBIAN-CVE-2020-14351 |
| Debian:13 | linux | 5.9.6-1 | DEBIAN-CVE-2020-14351 |
| Debian:14 | linux | 5.9.6-1 | DEBIAN-CVE-2020-14351 |
| Ubuntu:22.04:LTS | linux-intel-iot-realtime | no fix listed | UBUNTU-CVE-2020-14351 |
| Ubuntu:24.04:LTS | linux-raspi-realtime | no fix listed | UBUNTU-CVE-2020-14351 |
| Ubuntu:22.04:LTS | linux-realtime | no fix listed | UBUNTU-CVE-2020-14351 |
Affected products (as reported)
Weakness: CWE-416
References
- https://bugzilla.redhat.com/show_bug.cgi?id=1862849 x_refsource_MISC
- [debian-lts-announce] 20201210 [SECURITY] [DLA 2483-1] linux-4.19 security update mailing-list, x_refsource_MLIST
- [debian-lts-announce] 20201218 [SECURITY] [DLA 2494-1] linux security update mailing-list, x_refsource_MLIST