Linux · Kernel
CVE-2022-0847
Linux Kernel Privilege Escalation Vulnerability
Qué es
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.
CISA: 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."
Qué hacer
Apply updates per vendor instructions.
Plazo para las agencias federales de EE. UU.: 16 de mayo de 2022
- Añadida a la lista de CISA
- 25 de abril de 2022
- Publicada
- 7 de marzo de 2022
- Gravedad
- Alto 7,8 CVSS 3.1
- Probabilidad de ataques en los próximos 30 días (EPSS)
- 93% entre el 0,2% superior de todas las vulnerabilidades conocidas
- Debilidad
- CWE-665
- Más detalles
- NVD · CVE.org · CISA
Todas las referencias (10)
- https://bugzilla.redhat.com/show_bug.cgi?id=2060795
- https://dirtypipe.cm4all.com/
- http://packetstormsecurity.com/files/166230/Dirty-Pipe-SUID-Binary-Hijack-Privilege-Escalation.html
- http://packetstormsecurity.com/files/166229/Dirty-Pipe-Linux-Privilege-Escalation.html
- http://packetstormsecurity.com/files/166258/Dirty-Pipe-Local-Privilege-Escalation.html
- https://www.suse.com/support/kb/doc/?id=000020603
- https://security.netapp.com/advisory/ntap-20220325-0005/
- https://cert-portal.siemens.com/productcert/pdf/ssa-222547.pdf
- https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2022-0015
- http://packetstormsecurity.com/files/176534/Linux-4.20-KTLS-Read-Only-Write.html
Más fallos explotados de Linux
| Añadido | Vulnerabilidad | Producto | Gravedad | Prob. de ataque |
|---|---|---|---|---|
| 18 sept 2026 | Improper Check for Unusual or Exceptional Conditions | Kernel | Crítica 9,8 | 3,3% |
| 18 sept 2026 | Race Condition | Kernel | Alto 7,8 | 1,6% |
| 18 sept 2026 | Out-of-Bounds Write | Kernel | Alto 8,8 | 0,9% |
| 27 ago 2026 | Unspecified | Kernel | Alto 7,8 | 0,7% |
| 26 ago 2026 | Out-of-Bounds Write | Kernel | Alto 7,8 | 8,9% |
| 2 jun 2026 | Improper Authentication | Kernel | Alto 7,8 | 5,5% |
| 1 may 2026 | Incorrect Resource Transfer Between Spheres | Kernel | Alto 7,8 | 98% |
| 26 ene 2026 | Integer Overflow | Kernel | Alto 7,8 | 15% |
Fuentes: Known Exploited Vulnerabilities (CISA, dominio público), CVE records (cve.org) y EPSS (FIRST). La probabilidad de ataque es la estimación EPSS de que alguien intente explotar el fallo en los próximos 30 días.