CVE-2022-0847
HighActively exploited (CISA KEV)
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.
SeverityHigh
CVSS7.8
Exploit probability—
Product
Linux Kernel
PublishedMar 10, 2022
First seenMar 10, 2022
Added to KEVApr 25, 2022
Weakness typeCWE-665CWE-665
How to fix
CISA required action
Apply updates per vendor instructions.
CISA due date: May 16, 2022Update
- linux linux_kernel5.10.102, 5.15.25, 5.16.11 or later
- siemens scalance_lpe9403_firmware2.0 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| linux linux_kernel | 5.8 ≤ v < 5.10.102, 5.15 ≤ v < 5.15.25, 5.16 ≤ v < 5.16.11 | 5.10.102, 5.15.25, 5.16.11 |
| fedoraproject fedora | 35 | — |
| redhat enterprise_linux | 8.0 | — |
| redhat enterprise_linux_eus | 8.2, 8.4 | — |
| redhat enterprise_linux_for_ibm_z_systems | 8.0 | — |
| redhat enterprise_linux_for_ibm_z_systems_eus | 8.2, 8.4 | — |
| redhat enterprise_linux_for_power_little_endian | 8.0 | — |
| redhat enterprise_linux_for_power_little_endian_eus | 8.2, 8.4 | — |
| 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, 8.4 | — |
| redhat enterprise_linux_for_real_time_tus | 8.2, 8.4 | — |
| redhat enterprise_linux_server_aus | 8.2, 8.4 | — |
| redhat enterprise_linux_server_for_power_little_endian_update_services_for_sap_solutions | 8.1, 8.2, 8.4 | — |
| redhat enterprise_linux_server_tus | 8.2, 8.4 | — |
| redhat enterprise_linux_server_update_services_for_sap_solutions | 8.1, 8.2, 8.4 | — |
| redhat codeready_linux_builder | No range specified | — |
| redhat virtualization_host | 4.0 | — |
| ovirt ovirt-engine | 4.4.10.2 | — |
| netapp h300s_firmware | No range specified | — |
| netapp h500s_firmware | No range specified | — |
| netapp h700s_firmware | No range specified | — |
| netapp h300e_firmware | No range specified | — |
| netapp h500e_firmware | No range specified | — |
| netapp h700e_firmware | No range specified | — |
| netapp h410s_firmware | No range specified | — |
| netapp h410c_firmware | No range specified | — |
| siemens scalance_lpe9403_firmware | v < 2.0 | 2.0 |
| sonicwall sma1000_firmware | v ≤ 12.4.2-02044 | — |
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