CVE-2019-11191: linux linux_kernel
Vulnerability summary
CVE-2019-11191 is a low (CVSS 2.5) vulnerability in linux linux_kernel. EPSS estimates a 0.50% chance of exploitation in the next 30 days, higher than 42.5% of scored vulnerabilities. 2 public exploits are recorded.
Not severe (CVSS 2.5, local access); no exploitation reported by the 5 checked sources
Source freshness unavailable
How is this decided?Advisory lineage
Upstream 0 · Downstream 2 · Related 2Timeline
- 11-04-2019PublishedVulnerability first disclosed.
- 04-08-2024Last modifiedVulnerability information updated.
Description
The Linux kernel through 5.0.7, when CONFIG_IA32_AOUT is enabled and ia32_aout is loaded, allows local users to bypass ASLR on setuid a.out programs (if any exist) because install_exec_creds() is called too late in load_aout_binary() in fs/binfmt_aout.c, and thus the ptrace_may_access() check has a race condition when reading /proc/pid/stat. NOTE: the software maintainer disputes that this is a vulnerability because ASLR for a.out format executables has never been supported
CVSS metrics
4 scores · 3 sources · 2 versions- OSV · UbuntuEcosystem advisory · calculated2.5LowCVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N
- OSV · DebianEcosystem advisory · calculated2.5LowCVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N
EPSS trend
Probability
0.50%
Chance of exploitation in the next 30 days
Percentile
43%
Versus all other CVEs
30-day change
No change 0.00 pp
From 0.50% on 04-10-2026
Known exploited
Compare KEV catalogs
CISA KEVNot in the CISA KEV catalog.
ENISA CNWNot in the ENISA CNW catalog.
CIRCLNot in the CIRCL catalog.
Public exploits
2 foundExploit Reference (openwall.com)
Maturity: unknown
Exploit Reference (openwall.com)
Maturity: unknown
Weaknesses
CWE · root causeAffected systems
Known conditions: local access, low-privilege account, no user interaction (CVSS vector). Other conditions: not stated in public data.
Ubuntu21 products
- linuxAll versions (No fix recorded) | < 4.4.0-150.176 | < 4.15.0-51.55
- linux-aws< 4.4.0-1054.58 | < 4.4.0-1084.94 | < 4.15.0-1040.42
- linux-aws-hwe< 4.15.0-1040.42~16.04.1
- linux-azure< 4.15.0-1059.64~14.04.1 | < 4.15.0-1046.50 | < 4.18.0-1019.19~18.04.1
- linux-azure-fdeAll versions (No fix recorded)
Debian1 product
- linuxAll versions (No fix recorded)
Linux1 product
- linux_kernel≤ 5.0.7
3 vendors · 23 products
References
21 links- www.openwall.com/lists/oss-security/2019/04/03/4X Refsource MISCExploitMailing ListThird Party AdvisoryREPORT
- www.openwall.com/lists/oss-security/2019/04/03/4/1X Refsource MISCExploitMailing ListThird Party AdvisoryREPORT
