PT-2019-2821 · Linux+5 · Linux Kernel+5
Published
2019-04-19
·
Updated
2024-02-15
·
CVE-2019-11599
CVSS v3.1
7.0
High
| Vector | AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H |
Name of the Vulnerable Software and Affected Versions
Linux kernel versions prior to 5.0.10
Description
The issue is caused by errors in synchronization when using a shared resource in the Linux kernel's coredump implementation. This 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. The affected files include fs/userfaultfd.c, mm/mmap.c, fs/proc/task mmu.c, and drivers/infiniband/core/uverbs main.c.Recommendations
For Linux kernel versions prior to 5.0.10, update to version 5.0.10 or later to resolve the issue.
As a temporary workaround, consider restricting access to the coredump functionality until a patch is available.
Avoid triggering race conditions with
mmget not zero or get task mm calls in the affected API endpoints, such as those related to fs/userfaultfd.c, mm/mmap.c, fs/proc/task mmu.c, and drivers/infiniband/core/uverbs main.c, until the issue is resolved.Exploit
Fix
DoS
Race Condition
Improper Locking
Found an issue in the description? Have something to add? Feel free to write us 👾
Related Identifiers
Affected Products
Alt Linux
Centos
Linux Kernel
Red Hat
Suse
Ubuntu