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Vulnerability · Published Jan 18, 2024 · Assigned by openEuler

CVE-2021-33630NULL-ptr-deref in network sched

Medium 5.5

In plain English

A medium-severity null pointer dereference in kernel from openEuler. 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 28% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)5.5Medium
Exploit odds (30 days)0.3%top 72.3% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known

Official description

NULL Pointer Dereference vulnerability in openEuler kernel on Linux (network modules) allows Pointer Manipulation. This vulnerability is associated with program files net/sched/sch_cbs.C. This issue affects openEuler kernel: from 4.19.90 before 4.19.90-2401.3.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
Debian:12linux5.3.7-1DEBIAN-CVE-2021-33630
Debian:13linux5.3.7-1DEBIAN-CVE-2021-33630
Debian:14linux5.3.7-1DEBIAN-CVE-2021-33630
Ubuntu:22.04:LTSlinux-allwinner-5.19no fix listedUBUNTU-CVE-2021-33630
Ubuntu:22.04:LTSlinux-aws-5.19no fix listedUBUNTU-CVE-2021-33630
Ubuntu:22.04:LTSlinux-aws-6.2no fix listedUBUNTU-CVE-2021-33630
Ubuntu:22.04:LTSlinux-azure-5.19no fix listedUBUNTU-CVE-2021-33630
Ubuntu:22.04:LTSlinux-azure-6.2no fix listedUBUNTU-CVE-2021-33630
Ubuntu:22.04:LTSlinux-azure-fde-5.19no fix listedUBUNTU-CVE-2021-33630
Ubuntu:22.04:LTSlinux-azure-fde-6.2no fix listedUBUNTU-CVE-2021-33630
Ubuntu:22.04:LTSlinux-gcp-5.19no fix listedUBUNTU-CVE-2021-33630
Ubuntu:22.04:LTSlinux-gcp-6.2no fix listedUBUNTU-CVE-2021-33630
Ubuntu:22.04:LTSlinux-hwe-5.19no fix listedUBUNTU-CVE-2021-33630
Ubuntu:22.04:LTSlinux-hwe-6.2no fix listedUBUNTU-CVE-2021-33630
Ubuntu:22.04:LTSlinux-intel-iot-realtimeno fix listedUBUNTU-CVE-2021-33630
Ubuntu:22.04:LTSlinux-lowlatency-hwe-5.19no fix listedUBUNTU-CVE-2021-33630
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.2no fix listedUBUNTU-CVE-2021-33630
Ubuntu:22.04:LTSlinux-nvidia-6.2no fix listedUBUNTU-CVE-2021-33630
Ubuntu:22.04:LTSlinux-oem-5.17no fix listedUBUNTU-CVE-2021-33630
Ubuntu:22.04:LTSlinux-oem-6.0no fix listedUBUNTU-CVE-2021-33630
Ubuntu:24.04:LTSlinux-raspi-realtimeno fix listedUBUNTU-CVE-2021-33630
Ubuntu:22.04:LTSlinux-realtimeno fix listedUBUNTU-CVE-2021-33630
Ubuntu:22.04:LTSlinux-riscvno fix listedUBUNTU-CVE-2021-33630
Ubuntu:22.04:LTSlinux-riscv-5.19no fix listedUBUNTU-CVE-2021-33630
Ubuntu:22.04:LTSlinux-starfive-5.19no fix listedUBUNTU-CVE-2021-33630
Ubuntu:22.04:LTSlinux-starfive-6.2no fix listedUBUNTU-CVE-2021-33630

Affected products (as reported)

VendorProductVersions
openEuler kernel 4.19.90 – before 4.19.90-2401.3

Weakness: CWE-476 · Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

References