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CVE-2022-0847
A flaw was found in the way the "flags" member of the new pipe buffer structure was lacking proper initialization in…
High7.8Known exploitedEPSS 92.8%
- Published
- Updated
- Reserved
- Assigned by
- redhat
Description
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.
Exploited in the wild
CISA lists this vulnerability in its Known Exploited Vulnerabilities catalog as Linux Kernel Privilege Escalation Vulnerability.
- Added
- 25 Apr 2022
- Fix due (US federal)
- 16 May 2022
- Used by ransomware
- Not known
Apply updates per vendor instructions.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| CISA-ADPADP (enrichment) | 3.1 | High7.8 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
| NVDNVD · Analyzed | 3.1 | High7.8 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
- EPSS (exploitation in 30 days)
- 92.8% · top 0.2% of all CVEs (6 Nov 2026)
- CISA SSVC
- Exploitation: active · Automatable: no · Technical impact: total
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The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.8.
Weakness
Affected products
kernel
- affected Linux Kernel 5.17 rc6
References (11)
- https://bugzilla.redhat.com/show_bug.cgi?id=2060795 (opens in a new tab)x_transferred
- https://dirtypipe.cm4all.com/ (opens in a new tab)x_transferred
- http://packetstormsecurity.com/files/166230/Dirty-Pipe-SUID-Binary-Hijack-Privilege-Escalation.html (opens in a new tab)x_transferred
- http://packetstormsecurity.com/files/166229/Dirty-Pipe-Linux-Privilege-Escalation.html (opens in a new tab)x_transferred
- http://packetstormsecurity.com/files/166258/Dirty-Pipe-Local-Privilege-Escalation.html (opens in a new tab)x_transferred
- https://www.suse.com/support/kb/doc/?id=000020603 (opens in a new tab)x_transferred
- https://security.netapp.com/advisory/ntap-20220325-0005/ (opens in a new tab)x_transferred
- https://cert-portal.siemens.com/productcert/pdf/ssa-222547.pdf (opens in a new tab)x_transferred
- https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2022-0015 (opens in a new tab)x_transferred
- http://packetstormsecurity.com/files/176534/Linux-4.20-KTLS-Read-Only-Write.html (opens in a new tab)x_transferred
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2022-0847 (opens in a new tab)government-resource
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- CISA KEV catalog (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://trackcve.app/cve/CVE-2022-0847)Record last updated .