CVE-2020-11884
High
Description
In the Linux kernel 4.19 through 5.6.7 on the s390 platform, code execution may occur because of a race condition, as demonstrated by code in enable_sacf_uaccess in arch/s390/lib/uaccess.c that fails to protect against a concurrent page table upgrade, aka CID-3f777e19d171. A crash could also occur.
SeverityHigh
CVSS7.0
Exploit probability—
Product
Linux Kernel
PublishedApr 29, 2020
First seenApr 29, 2020
How to fix
Update
- linux linux_kernel4.19.119, 5.4.36, 5.6.8 or later
Vendor advisories
- debian.org/security/2020/dsa-4667
- usn.ubuntu.com/4343-1/
- lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZKVJMS4GQRH5SO35WM5GINCFAGXQ3ZW6/
- lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/AQUVKC3IPUC5B374VVAZV4J5P3GAUGSW/
- lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/3TZBP2HINNAX7HKHCOUMIFVQPV6GWMCZ/
- usn.ubuntu.com/4345-1/
- usn.ubuntu.com/4342-1/
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| linux linux_kernel | 4.15 ≤ v < 4.19.119, 4.20 ≤ v < 5.4.36, 5.5 ≤ v < 5.6.8 | 4.19.119, 5.4.36, 5.6.8 |
| canonical ubuntu_linux | 16.04, 18.04, 19.10, 20.04 | — |
| debian debian_linux | 10.0 | — |
| fedoraproject fedora | 30, 31, 32 | — |
| netapp active_iq_unified_manager | No range specified | — |
| netapp cloud_backup | No range specified | — |
| netapp element_software | No range specified | — |
| netapp hci_management_node | No range specified | — |
| netapp solidfire | No range specified | — |
| netapp steelstore_cloud_integrated_storage | No range specified | — |
| netapp solidfire_baseboard_management_controller | No range specified | — |
| netapp bootstrap_os | No range specified | — |
| netapp a700s_firmware | No range specified | — |
| 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 | — |
| netapp h610c_firmware | No range specified | — |
| netapp h610s_firmware | No range specified | — |
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