vulnerability
SUSE: CVE-2017-12190: SUSE Linux Security Advisory
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 5 | (AV:L/AC:L/Au:N/C:N/I:N/A:C) | Nov 18, 2017 | Mar 29, 2018 | Feb 4, 2022 |
Severity
5
CVSS
(AV:L/AC:L/Au:N/C:N/I:N/A:C)
Published
Nov 18, 2017
Added
Mar 29, 2018
Modified
Feb 4, 2022
Description
The bio_map_user_iov and bio_unmap_user functions in block/bio.c in the Linux kernel before 4.13.8 do unbalanced refcounting when a SCSI I/O vector has small consecutive buffers belonging to the same page. The bio_add_pc_page function merges them into one, but the page reference is never dropped. This causes a memory leak and possible system lockup (exploitable against the host OS by a guest OS user, if a SCSI disk is passed through to a virtual machine) due to an out-of-memory condition.
Solution(s)
suse-upgrade-cluster-md-kmp-defaultsuse-upgrade-dlm-kmp-defaultsuse-upgrade-gfs2-kmp-defaultsuse-upgrade-kernel-azure-basesuse-upgrade-kernel-defaultsuse-upgrade-kernel-default-extrasuse-upgrade-kernel-default-mansuse-upgrade-kernel-devel-azuresuse-upgrade-kernel-docssuse-upgrade-kernel-ec2suse-upgrade-kernel-ec2-develsuse-upgrade-kernel-ec2-extrasuse-upgrade-kernel-obs-buildsuse-upgrade-kernel-source-azuresuse-upgrade-ocfs2-kmp-default
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