CVE-2019-11599
High
Description
The coredump implementation in the Linux kernel before 5.0.10 does not use locking or other mechanisms to prevent vma layout or vma flags changes while it runs, which allows local users to obtain sensitive information, cause a denial of service, or possibly have unspecified other impact by triggering a race condition with mmget_not_zero or get_task_mm calls. This is related to fs/userfaultfd.c, mm/mmap.c, fs/proc/task_mmu.c, and drivers/infiniband/core/uverbs_main.c.
SeverityHigh
CVSS7.0
Exploit probability—
Product
Linux Kernel
PublishedApr 29, 2019
First seenApr 29, 2019
How to fix
Update
- linux linux_kernel3.16.66, 4.4.183, 4.9.188, 4.14.114, 4.19.37, 5.0.10 or later
Vendor advisories
- debian.org/security/2019/dsa-4465
- usn.ubuntu.com/4069-1/
- usn.ubuntu.com/4069-2/
- access.redhat.com/errata/RHSA-2019:2043
- access.redhat.com/errata/RHSA-2019:2029
- usn.ubuntu.com/4095-1/
- usn.ubuntu.com/4115-1/
- usn.ubuntu.com/4118-1/
- access.redhat.com/errata/RHSA-2019:3309
- access.redhat.com/errata/RHSA-2019:3517
- access.redhat.com/errata/RHSA-2020:0100
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| linux linux_kernel | 2.16.12 ≤ v < 3.16.66, 3.17 ≤ v < 4.4.183, 4.5 ≤ v < 4.9.188, 4.10 ≤ v < 4.14.114, 4.15 ≤ v < 4.19.37, 4.20 ≤ v < 5.0.10 | 3.16.66, 4.4.183, 4.9.188, 4.14.114, 4.19.37, 5.0.10 |
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