Information disclosure in Linux Kernel
CVE-2019-15902
A backporting error was discovered in the Linux stable/longterm kernel 4.4.x through 4.4.190, 4.9.x through 4.9.190, 4.14.x through 4.14.141, 4.19.x through 4.19.69, and 5.2.x through 5.2.11. Misuse of the upstream "x86/ptrace: Fix possible spectre-v1 in ptrace_get_debugreg()" commit reintroduced the Spectre vulnerability that it aimed to eliminate. This occurred because the backport process depends on cherry picking specific commits, and because two (correctly ordered) code lines were swapped.
Vulnerability class: Information Disclosure
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.6 (Medium). Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:N/A:N.
EPSS exploit prediction
EPSS: 0.006 (49.2th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 49th percentile — 49.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.006 · newest: 0.006 · change: 0.000
Affected products
Weakness classification (CWE)
References
- grsecurity.net/teardown_of_a_failed_linux_lts_spectre_fix.php (Exploit, Patch, Third Party Advisory)
- lists.opensuse.org/opensuse-security-announce/2019-09/msg00064.html (vendor-advisory, Third Party Advisory)
- lists.opensuse.org/opensuse-security-announce/2019-09/msg00066.html (vendor-advisory, Third Party Advisory)
- seclists.org/bugtraq/2019/Sep/41 (mailing-list, Mailing List, Third Party Advisory)
- www.debian.org/security/2019/dsa-4531 (vendor-advisory, Third Party Advisory)
- lists.debian.org/debian-lts-announce/2019/10/msg00000.html (mailing-list, Third Party Advisory)
- security.netapp.com/advisory/ntap-20191004-0001/ (Third Party Advisory)
- usn.ubuntu.com/4157-1/ (vendor-advisory)
- usn.ubuntu.com/4162-1/ (vendor-advisory)
- usn.ubuntu.com/4157-2/ (vendor-advisory)
Frequently asked questions
- What is CVE-2019-15902?
- CVE-2019-15902 is a medium-severity vulnerability in Linux Kernel, classified under Information Disclosure. CVSS score: 5.6/10. Published 2019-09-04.
- How severe is CVE-2019-15902?
- Medium severity. CVSS v3 base score is 5.6 out of 10.