Vulnerability · Published Mar 4, 2021 · Assigned by redhat
CVE-2020-25639
Medium 4.4
In plain English
A medium-severity null pointer dereference in kernel. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 31% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS NVD)4.4Medium
Exploit odds (30 days)0.4%top 69.4% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
A NULL pointer dereference flaw was found in the Linux kernel's GPU Nouveau driver functionality in versions prior to 5.12-rc1 in the way the user calls ioctl DRM_IOCTL_NOUVEAU_CHANNEL_ALLOC. This flaw allows a local user to crash the system.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:12 | linux | 5.10.19-1 | DEBIAN-CVE-2020-25639 |
| Debian:13 | linux | 5.10.19-1 | DEBIAN-CVE-2020-25639 |
| Debian:14 | linux | 5.10.19-1 | DEBIAN-CVE-2020-25639 |
| Ubuntu:22.04:LTS | linux-intel-iot-realtime | no fix listed | UBUNTU-CVE-2020-25639 |
| Ubuntu:24.04:LTS | linux-raspi-realtime | no fix listed | UBUNTU-CVE-2020-25639 |
| Ubuntu:22.04:LTS | linux-realtime | no fix listed | UBUNTU-CVE-2020-25639 |
Affected products (as reported)
Weakness: CWE-476
References
- https://bugzilla.redhat.com/show_bug.cgi?id=1876995 x_refsource_MISC
- FEDORA-2021-1db4ab0a3d vendor-advisory, x_refsource_FEDORA
- FEDORA-2021-a2d3ad5dda vendor-advisory, x_refsource_FEDORA