UBUNTU-CVE-2019-11599
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.
02 / AFFECTED SOFTWARE
Affected packages
65 explicit affected versions
24 explicit affected versions
2 explicit affected versions
57 explicit affected versions
191 explicit affected versions
29 explicit affected versions
11 explicit affected versions
1 explicit affected versions
34 explicit affected versions
1 explicit affected versions
1 explicit affected versions
12 explicit affected versions
1 explicit affected versions
33 explicit affected versions
10 explicit affected versions
11 explicit affected versions
34 explicit affected versions
10 explicit affected versions
28 explicit affected versions
1 explicit affected versions
7 explicit affected versions
23 explicit affected versions
11 explicit affected versions
67 explicit affected versions
30 explicit affected versions
35 explicit affected versions
95 explicit affected versions
51 explicit affected versions
42 explicit affected versions
1 explicit affected versions
1 explicit affected versions
54 explicit affected versions
12 explicit affected versions
30 explicit affected versions
26 explicit affected versions
27 explicit affected versions
75 explicit affected versions
55 explicit affected versions
9 explicit affected versions
21 explicit affected versions
11 explicit affected versions
1 explicit affected versions
03 / CONNECTIONS
Connected vulnerabilities
04 / EVIDENCE
Source records
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.
05 / REFERENCES
Further evidence
- http://www.openwall.com/lists/oss-security/2019/04/29/1
- http://www.openwall.com/lists/oss-security/2019/04/29/2
- https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=04f5866e41fb70690e28397487d8bd8eea7d712a
- https://ubuntu.com/security/CVE-2019-11599
- https://ubuntu.com/security/notices/USN-4069-1
- https://ubuntu.com/security/notices/USN-4069-2
- https://ubuntu.com/security/notices/USN-4095-1
- https://ubuntu.com/security/notices/USN-4115-1
- https://ubuntu.com/security/notices/USN-4118-1
- https://www.cve.org/CVERecord?id=CVE-2019-11599