CVE-2022-0847
A flaw was found in the way the "flags" member of the new pipe buffer structure was lacking proper initialization in copy_page_to_iter_pipe and push_pipe functions in the Linux kernel and could thus contain stale values. An unprivileged local user could use this flaw to write to pages in the page cache backed by read only files and as such escalate their privileges on the system.
Actively exploited
- In the CISA exploited-vulnerabilities catalogue since Apr 25, 2022
- US federal agencies must remediate it by May 16, 2022 (BOD 22-01)
- First attack observed 45 days after disclosure
- Confirmed by sensors, not only by reports
- Used in ransomware campaigns
Apply updates per vendor instructions.
Source: CISA KEV · Sep 21, 2026 Sep 8, 2026 Aug 26, 2026 Aug 20, 2026 Mar 6, 2026 Dec 3, 2025
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HAffected products
| Vendors | Product | Versions |
|---|---|---|
| linux | linux kernel | < 5.10.102 |
| fedoraproject | fedora | 35 |
| redhat | enterprise linux | 8.0 |
| redhat | enterprise linux eus | 8.2 |
| redhat | enterprise linux for ibm z systems | 8.0 |
| redhat | enterprise linux for ibm z systems eus | 8.2 |
| redhat | enterprise linux for power little endian | 8.0 |
| redhat | enterprise linux for power little endian eus | 8.2 |
| redhat | enterprise linux for real time | 8 |
| redhat | enterprise linux for real time for nfv | 8 |
| redhat | enterprise linux for real time for nfv tus | 8.2 |
| redhat | enterprise linux for real time tus | 8.2 |
| redhat | enterprise linux server aus | 8.2 |
| redhat | enterprise linux server for power little endian update services for sap solutions | 8.1 |
| redhat | enterprise linux server tus | 8.2 |
| redhat | enterprise linux server update services for sap solutions | 8.1 |
| redhat | codeready linux builder | - |
| redhat | virtualization host | 4.0 |
| ovirt | ovirt-engine | 4.4.10.2 |
| netapp | h300s firmware | - |
| netapp | h300s | - |
| netapp | h500s firmware | - |
| netapp | h500s | - |
| netapp | h700s firmware | - |
| netapp | h700s | - |
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