Vulnerability · Published Feb 14, 2020 · Assigned by mitre
CVE-2020-8992
Medium 5.5
In plain English
A medium-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 0.4% (higher than 36% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS NVD)5.5Medium
Exploit odds (30 days)0.4%top 63.9% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known
Official description
ext4_protect_reserved_inode in fs/ext4/block_validity.c in the Linux kernel through 5.5.3 allows attackers to cause a denial of service (soft lockup) via a crafted journal size.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:12 | linux | 5.5.13-1 | DEBIAN-CVE-2020-8992 |
| Debian:13 | linux | 5.5.13-1 | DEBIAN-CVE-2020-8992 |
| Debian:14 | linux | 5.5.13-1 | DEBIAN-CVE-2020-8992 |
| Ubuntu:22.04:LTS | linux-intel-iot-realtime | no fix listed | UBUNTU-CVE-2020-8992 |
| Ubuntu:24.04:LTS | linux-raspi-realtime | no fix listed | UBUNTU-CVE-2020-8992 |
| Ubuntu:22.04:LTS | linux-realtime | no fix listed | UBUNTU-CVE-2020-8992 |
| Ubuntu:22.04:LTS | linux-riscv | no fix listed | UBUNTU-CVE-2020-8992 |
Affected products (as reported)
References
- https://patchwork.ozlabs.org/patch/1236118/ x_refsource_MISC
- https://security.netapp.com/advisory/ntap-20200313-0003/ x_refsource_CONFIRM
- openSUSE-SU-2020:0336 vendor-advisory, x_refsource_SUSE
- USN-4318-1 vendor-advisory, x_refsource_UBUNTU
- USN-4324-1 vendor-advisory, x_refsource_UBUNTU
- USN-4344-1 vendor-advisory, x_refsource_UBUNTU
- USN-4342-1 vendor-advisory, x_refsource_UBUNTU
- USN-4419-1 vendor-advisory, x_refsource_UBUNTU