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.
Metrics
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:N/A:NWeakness enumeration
Affected software
| Vendor | Product | Versions |
|---|---|---|
| n/a | n/a | n/a |
References
- http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00064.htmlThird Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00066.htmlThird Party Advisory
- https://grsecurity.net/teardown_of_a_failed_linux_lts_spectre_fix.phpExploit, Patch, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2019/10/msg00000.htmlThird Party Advisory
- https://seclists.org/bugtraq/2019/Sep/41Mailing List, Third 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-4531Third Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00064.htmlThird Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00066.htmlThird Party Advisory
- https://grsecurity.net/teardown_of_a_failed_linux_lts_spectre_fix.phpExploit, Patch, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2019/10/msg00000.htmlThird Party Advisory
- https://seclists.org/bugtraq/2019/Sep/41Mailing List, Third 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-4531Third Party Advisory
Timeline
- Published
- Sep 4, 2019
- Last modified
- Jun 17, 2026
- NVD status
- Modified