CVE-2020-11884
Published: April 29, 2020Last modified: October 13, 2023
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.
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score | 7 |
| Attack Vector | LOCAL |
| Attack complexity | HIGH |
| Privileges required | LOW |
| User interaction | NONE |
| Scope | UNCHANGED |
| Confidentiality | HIGH |
| Integrity impact | HIGH |
| Availability impact | HIGH |
| Vector | CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H |
Status
| Product | Release | Package | Status |
|---|---|---|---|
| Alpaquita Linux | 23 LTS | linux-lts | Not affected (6.1.50-r0) |
| Stream | linux-lts | Not affected (6.1.50-r0) |
References
- https://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git/commit/?id=215d1f3928713d6eaec67244bcda72105b898000
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=3f777e19d171670ab558a6d5e6b1ac7f9b6c574f
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/3TZBP2HINNAX7HKHCOUMIFVQPV6GWMCZ/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/AQUVKC3IPUC5B374VVAZV4J5P3GAUGSW/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZKVJMS4GQRH5SO35WM5GINCFAGXQ3ZW6/
- https://lists.fedoraproject.org/archives/list/[email protected]/message/3TZBP2HINNAX7HKHCOUMIFVQPV6GWMCZ/
- https://lists.fedoraproject.org/archives/list/[email protected]/message/AQUVKC3IPUC5B374VVAZV4J5P3GAUGSW/
- https://lists.fedoraproject.org/archives/list/[email protected]/message/ZKVJMS4GQRH5SO35WM5GINCFAGXQ3ZW6/
- https://security.netapp.com/advisory/ntap-20200608-0001/
- https://usn.ubuntu.com/4342-1/
- https://usn.ubuntu.com/4343-1/
- https://usn.ubuntu.com/4345-1/
- https://www.debian.org/security/2020/dsa-4667