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High 7.8Known exploited (CISA KEV)Published Mar 7, 2022
CVE-2022-0847A 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…
Updated under an hour ago ()
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It affects linux_kernel and 28 other products. Add what you run to find out whether that includes you.
CISA lists it as known exploited since Apr 25, 2022; federal agencies had to remediate by May 16, 2022. Treat that date as your deadline.
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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.
- CVSS
- 7.8 HIGH (v3.1, CISA ADP)CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- Weakness (CWE)
- CWE-665
- Known exploited
- Added to CISA KEV Apr 25, 2022; federal remediation due May 16, 2022Apply updates per vendor instructions.
- EPSS (exploitation in the next 30 days)
- 92.80% (percentile 100)
- Assigned by
- redhat
- NVD analysis
- Analyzed
- Record last updated
- Oct 21, 2025
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
linux linux_kernel linux:linux_kernel | from 5.8 before 5.10.102; from 5.15 before 5.15.25; from 5.16 before 5.16.11 | NVD |
fedoraproject fedora fedoraproject:fedora | 35 | NVD |
redhat enterprise_linux redhat:enterprise_linux | 8.0 | NVD |
redhat enterprise_linux_eus redhat:enterprise_linux_eus | 8.2; 8.4 | NVD |
redhat enterprise_linux_for_ibm_z_systems redhat:enterprise_linux_for_ibm_z_systems | 8.0 | NVD |
redhat enterprise_linux_for_ibm_z_systems_eus redhat:enterprise_linux_for_ibm_z_systems_eus | 8.2; 8.4 | NVD |
redhat enterprise_linux_for_power_little_endian redhat:enterprise_linux_for_power_little_endian | 8.0 | NVD |
redhat enterprise_linux_for_power_little_endian_eus redhat:enterprise_linux_for_power_little_endian_eus | 8.2; 8.4 | NVD |
redhat enterprise_linux_for_real_time redhat:enterprise_linux_for_real_time | 8 | NVD |
redhat enterprise_linux_for_real_time_for_nfv redhat:enterprise_linux_for_real_time_for_nfv | 8 | NVD |
redhat enterprise_linux_for_real_time_for_nfv_tus redhat:enterprise_linux_for_real_time_for_nfv_tus | 8.2; 8.4 | NVD |
redhat enterprise_linux_for_real_time_tus redhat:enterprise_linux_for_real_time_tus | 8.2; 8.4 | NVD |
redhat enterprise_linux_server_aus redhat:enterprise_linux_server_aus | 8.2; 8.4 | NVD |
redhat enterprise_linux_server_for_power_little_endian_update_services_for_sap_solutions redhat:enterprise_linux_server_for_power_little_endian_update_services_for_sap_solutions | 8.1; 8.2; 8.4 | NVD |
redhat enterprise_linux_server_tus redhat:enterprise_linux_server_tus | 8.2; 8.4 | NVD |
redhat enterprise_linux_server_update_services_for_sap_solutions redhat:enterprise_linux_server_update_services_for_sap_solutions | 8.1; 8.2; 8.4 | NVD |
redhat codeready_linux_builder redhat:codeready_linux_builder | all versions | NVD |
redhat virtualization_host redhat:virtualization_host | 4.0 | NVD |
ovirt ovirt-engine ovirt:ovirt-engine | 4.4.10.2 | NVD |
netapp h300s_firmware netapp:h300s_firmware | all versions | NVD |
netapp h500s_firmware netapp:h500s_firmware | all versions | NVD |
netapp h700s_firmware netapp:h700s_firmware | all versions | NVD |
netapp h300e_firmware netapp:h300e_firmware | all versions | NVD |
netapp h500e_firmware netapp:h500e_firmware | all versions | NVD |
netapp h700e_firmware netapp:h700e_firmware | all versions | NVD |
netapp h410s_firmware netapp:h410s_firmware | all versions | NVD |
netapp h410c_firmware netapp:h410c_firmware | all versions | NVD |
siemens scalance_lpe9403_firmware siemens:scalance_lpe9403_firmware | before 2.0 | NVD |
sonicwall sma1000_firmware sonicwall:sma1000_firmware | through 12.4.2-02044 | NVD |
References
- https://bugzilla.redhat.com/show_bug.cgi?id=2060795issue-tracking, patch, third-party-advisory
- https://dirtypipe.cm4all.com/exploit, third-party-advisory
- http://packetstormsecurity.com/files/166230/Dirty-Pipe-SUID-Binary-Hijack-Privilege-Escalation.htmlexploit, third-party-advisory, vdb-entry
- http://packetstormsecurity.com/files/166229/Dirty-Pipe-Linux-Privilege-Escalation.htmlexploit, third-party-advisory, vdb-entry
- http://packetstormsecurity.com/files/166258/Dirty-Pipe-Local-Privilege-Escalation.htmlexploit, third-party-advisory, vdb-entry
- https://www.suse.com/support/kb/doc/?id=000020603third-party-advisory
- https://security.netapp.com/advisory/ntap-20220325-0005/third-party-advisory
- https://cert-portal.siemens.com/productcert/pdf/ssa-222547.pdfthird-party-advisory
- https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2022-0015third-party-advisory
- http://packetstormsecurity.com/files/176534/Linux-4.20-KTLS-Read-Only-Write.htmlthird-party-advisory, vdb-entry
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2022-0847us-government-resource
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