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Vulnerability record · CVE-2019-15902 · published 4 September 2019

CVE-2019-15902: Linux kernel information exposure vulnerability

Linux · Linux Kernel

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.

5.6 CVSS 3.1 Medium EPSS 0.61% · top 52.9% CWE-200 · Information exposure
5.6CVSS 3.1 base score, v2 4.7
0.61%EPSS exploitation probability, 30 days
NoNot in CISA KEV
6Affected product versions listed by NVD
26References, 2 tagged exploit
17 Jun 2026Last modified by NVD

Description

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.

CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:N/A:N

Affected products

6 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00064.html Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00066.html Third Party Advisory
https://grsecurity.net/teardown_of_a_failed_linux_lts_spectre_fix.php ExploitPatchThird Party Advisory
https://lists.debian.org/debian-lts-announce/2019/10/msg00000.html Third Party Advisory
https://seclists.org/bugtraq/2019/Sep/41 Mailing ListThird Party Advisory
https://security.netapp.com/advisory/ntap-20191004-0001/ Third Party Advisory
https://usn.ubuntu.com/4157-1/
https://usn.ubuntu.com/4157-2/
https://usn.ubuntu.com/4162-1/
https://usn.ubuntu.com/4162-2/
https://usn.ubuntu.com/4163-1/
https://usn.ubuntu.com/4163-2/
https://www.debian.org/security/2019/dsa-4531 Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00064.html Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00066.html Third Party Advisory
https://grsecurity.net/teardown_of_a_failed_linux_lts_spectre_fix.php ExploitPatchThird Party Advisory
https://lists.debian.org/debian-lts-announce/2019/10/msg00000.html Third Party Advisory
https://seclists.org/bugtraq/2019/Sep/41 Mailing ListThird Party Advisory
https://security.netapp.com/advisory/ntap-20191004-0001/ Third Party Advisory
https://usn.ubuntu.com/4157-1/
https://usn.ubuntu.com/4157-2/
https://usn.ubuntu.com/4162-1/
https://usn.ubuntu.com/4162-2/
https://usn.ubuntu.com/4163-1/
https://usn.ubuntu.com/4163-2/
https://www.debian.org/security/2019/dsa-4531 Third Party Advisory

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Source: NIST National Vulnerability Database (record CVE-2019-15902), CISA KEV, FIRST EPSS (scores of 2026-09-29). This page is refreshed as NVD updates the record.