Vulnerability in Linux Kernel
CVE-2019-11190
The Linux kernel before 4.8 allows local users to bypass ASLR on setuid programs (such as /bin/su) because install_exec_creds() is called too late in load_elf_binary() in fs/binfmt_elf.c, and thus the ptrace_may_access() check has a race condition when reading /proc/pid/stat.
Vulnerability class: Race Condition
Published · last modified .
CVSS v3 metric
CVSS v3 base score 4.7 (Medium). Vector: CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N.
EPSS exploit prediction
EPSS: 0.005 (39.4th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 39th percentile — 39.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.005 · newest: 0.005 · change: 0.000
Affected products
Weakness classification (CWE)
Public proof-of-concept exploits
- ARPSyndicate/cvemon
- kdn111/linux-kernel-exploitation
- khanhdn111/linux-kernel-exploitation
- khanhdz-06/linux-kernel-exploitation
- khanhdz191/linux-kernel-exploitation
- khanhhdz/linux-kernel-exploitation
- khanhhdz06/linux-kernel-exploitation
- khanhnd123/linux-kernel-exploitation
- khnhdz/linux-kernel-exploitation
- knd06/linux-kernel-exploitation
References
- www.openwall.com/lists/oss-security/2019/04/03/4 (Exploit, Mailing List, Third Party Advisory)
- www.openwall.com/lists/oss-security/2019/04/03/4/1 (Exploit, Mailing List, Third Party Advisory)
- git.kernel.org/pub/scm/linux/kernel/git/stable/stable-queue.git/commit/ (Patch, Third Party Advisory)
- git.kernel.org/pub/scm/linux/kernel/git/stable/stable-queue.git/commit/ (Patch, Third Party Advisory)
- www.securityfocus.com/bid/107890 (vdb-entry)
- www.openwall.com/lists/oss-security/2019/04/15/1 (mailing-list)
- lists.debian.org/debian-lts-announce/2019/05/msg00041.html (mailing-list)
- lists.debian.org/debian-lts-announce/2019/05/msg00042.html (mailing-list)
- usn.ubuntu.com/4008-1/ (vendor-advisory)
- usn.ubuntu.com/4008-2/ (vendor-advisory)
Frequently asked questions
- What is CVE-2019-11190?
- CVE-2019-11190 is a medium-severity vulnerability in Linux Kernel, classified under Concurrent Execution using Shared Resource with Improper Synchronization (Race Condition). CVSS score: 4.7/10. Published 2019-04-12.
- How severe is CVE-2019-11190?
- Medium severity. CVSS v3 base score is 4.7 out of 10.
- Is CVE-2019-11190 known to be exploited?
- 15 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.