CVE-2022-0500
CVE-2022-0500: 1 tracked advisory record across Red Hat. Compare vendor sources and published fix guidance.
Compare the source-linked records below. Ratings and product/version details belong to each advisory; they are not a single CVE-wide score or proof that every listed product is affected. How VulniPulse collects and checks evidence.
Vendor advisory comparison
Red Hat
1 advisory- Advisory severityHigh7.0
High [CVE-2022-0500] flaw was found in unrestricted eBPF usage by the BPF_BTF_LOAD, leading to a possible out-of-bounds memory write in the Linux kernel’s BPF subsystem due to the way a user loads BTF
CVE-2022-0500Source published Source updated
A flaw was found in unrestricted eBPF usage by the BPF_BTF_LOAD, leading to a possible out-of-bounds memory write in the Linux kernel’s BPF subsystem due to the way a user loads BTF. This flaw allows a local user to crash or escalate their privileges on the system. Red Hat severity: Moderate — CVSS 7 (CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H). Weakness: CWE-787. Affected Red Hat products: Red Hat Enterprise Linux 8; Red Hat Enterprise Linux 8.6 Extended Update Support; Red Hat Enterprise Linux 8.8 Extended Update Support; Red Hat Virtualization 4 for Red Hat Enterprise Linux 8; Red Hat Enterprise Linux 9. Red Hat lists Red Hat Enterprise Linux 6; Red Hat Enterprise Linux 7 as not affected. Will not fix / out of support: Red Hat Enterprise Linux 9. Red Hat fixing advisory…
- Affected products in this advisory
- Red Hat Enterprise Linux 8.6 Extended Update Support
- Red Hat Enterprise Linux 8.8 Extended Update Support
- Red Hat Virtualization 4 for Red Hat Enterprise Linux 8
- Red Hat Enterprise Linux 9
1 more entries in the full advisory.
- Source-reported affected versions
- Affected-version details not available in this record.
- Source-reported fixed versions
- kernel-rt-0:4.18.0-553.rt7.342.el8_10
- kernel-0:4.18.0-553.el8_10
- kernel-0:4.18.0-372.91.1.el8_6
- kernel-0:4.18.0-477.81.1.el8_8
4 more entries in the full advisory.
- Mitigation guidance
- The default Red Hat Enterprise Linux kernel prevents unprivileged users from being able to use eBPF by the kernel.unprivileged_bpf_disabled sysctl. This would require a privileged user with CAP_SYS_ADMIN or root to be able to abuse this flaw reducing its attack space. For Red Hat Enterprise Linux 7 the eBPF for unprivileged users is always disabled. For Red Hat Enterprise Linux 8 to confirm the current state, inspect the sysctl with the command: ``` # cat /proc/sys/kernel/unprivileged_bpf_disabled ``` The setting of 1 would mean that unprivileged users can not use eBPF, mitigating the flaw. A kernel update will be required to mitigate the flaw for the root or users with CAP_SYS_ADMIN (or CAP_BPF) capabilities.
Android app · Google Play
Monitor future Red Hat CVEs from your phone.
Choose a whole vendor or a precise platform, then receive matching security advisories by phone notification, email, or both. Coverage follows 34 official vendor sources and 160+ reviewed platform categories.