CVE-2022-0847
Linux Kernel: Privilege Escalation
As of , CVE-2022-0847 in Linux Kernel is on CISA's list of exploited vulnerabilities: CISA listed it on . Our patch-first group: Patch this week.
- Exploited
- Yes: CISA listed it on 25 April 2022
- US federal deadline
- 16 May 202221 days after CISA listed it. US federal civilian agencies must fix it by then.
- Used in ransomware campaigns
- Not known to CISA
- EPSS score
- 0.93Higher than 99% of the CVEs EPSS scores. EPSS estimates the chance of exploitation activity in the next 30 days.
- EPSS when listed
- 0.07 on 25 April 2022EPSS on the day CISA listed it.
- Public exploit
- 1 Metasploit module and 1 Exploit-DB entry
- Fix
- No vendor link in CISA's entry
What CISA says to do
Apply updates per vendor instructions.
CISA's required action
What the flaw is
Linux kernel contains an improper initialization vulnerability where an unprivileged local user could escalate their privileges on the system. This vulnerability has the moniker of "Dirty Pipe."
CISA's 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.
The CVE record's description, from redhat
- CVE published
- 7 March 2022
- Assigned by
- redhat
- CVSS
- 7.8 High (CVSS 3.1, from CISA-ADP)
- CWE-665
- Improper Initialization
- CISA SSVC, exploitation
- active
- CISA SSVC, automatable
- no
- CISA SSVC, technical impact
- total
Timeline
- The CVE record was published.
- Exploit-DB published an exploit (EDB-ID 50808).
- CISA added it to its list of exploited vulnerabilities.
- The US federal deadline to fix it.
Public exploits
Facts from Metasploit's module list and Exploit-DB's index; we never copy exploit code.
- Metasploit: Dirty Pipe Local Privilege Escalation via CVE-2022-0847exploit module, rank excellent
- Exploit-DB: Linux Kernel 5.8 < 5.16.11 - Local Privilege Escalation (DirtyPipe)EDB-ID 50808, 8 March 2022
Kernel: other exploited entries
| Vulnerability | Product | Our group | Listed | Deadline | EPSS |
|---|---|---|---|---|---|
| CVE-2025-39682Improper Check for Unusual or Exceptional Conditions | Linux Kernel | Patch nowForensic triage required by CISA | 0.03 | ||
| CVE-2025-39964Race Condition | Linux Kernel | Patch nowForensic triage required by CISA | 0.01 | ||
| CVE-2026-53266Out-of-Bounds Write | Linux Kernel | Patch nowForensic triage required by CISA | 0.01 | ||
| CVE-2026-53362Unspecified | Linux Kernel | Patch nowForensic triage required by CISA | 0.01 | ||
| CVE-2021-22555Heap Out-of-Bounds Write | Linux Kernel | Patch this weekMetasploit module; EPSS 0.79; verified Exploit-DB entry | 0.79 | ||
| CVE-2013-6282Improper Input Validation | Linux Kernel | Patch this weekMetasploit module; verified Exploit-DB entry | 0.40 | ||
| CVE-2019-13272Improper Privilege Management | Linux Kernel | Patch this weekMetasploit module; EPSS 0.52; verified Exploit-DB entry | 0.52 | ||
| CVE-2010-3904Improper Input Validation | Linux Kernel | Patch this weekMetasploit module; verified Exploit-DB entry | 0.16 | ||
| CVE-2021-3493Privilege Escalation | Linux Kernel | Patch this weekMetasploit module | 0.49 | ||
| CVE-2014-3153Privilege Escalation | Linux Kernel | Patch this weekMetasploit module | 0.37 |
Read further
- CVE recordcve.org
- NVD entrynvd.nist.gov
- CISA's catalogcisa.gov
- EPSS for this CVEapi.first.org