CVE-2018-20856
High
Description
An issue was discovered in the Linux kernel before 4.18.7. In block/blk-core.c, there is an __blk_drain_queue() use-after-free because a certain error case is mishandled.
SeverityHigh
CVSS7.8
Exploit probability—
Product
Linux Kernel
PublishedJul 26, 2019
First seenJul 26, 2019
How to fix
Update
- linux linux_kernel4.18.7 or later
Vendor advisories
- usn.ubuntu.com/4094-1/
- debian.org/security/2019/dsa-4497
- usn.ubuntu.com/4116-1/
- usn.ubuntu.com/4118-1/
- access.redhat.com/errata/RHSA-2019:3076
- access.redhat.com/errata/RHSA-2019:3055
- access.redhat.com/errata/RHSA-2019:3089
- access.redhat.com/errata/RHSA-2019:3217
- access.redhat.com/errata/RHSA-2020:0100
- access.redhat.com/errata/RHSA-2020:0103
- access.redhat.com/errata/RHSA-2020:0543
- access.redhat.com/errata/RHSA-2020:0664
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| linux linux_kernel | v < 4.18.7 | 4.18.7 |
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