CVE-2019-13272

high KEV

Published 2021-12-10 · Modified 2021-12-10

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CVSS v3

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CVSS v4 NEW

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not yet in upstream

VIR risk

10.0

Description

Kernel/ptrace.c in Linux kernel mishandles contains an improper privilege management vulnerability that allows local users to obtain root access.

CISA KEV

Vendor: Linux
Product: Kernel
Due date: 2022-06-10

Predictions

Exploit likelihood

99%

Patch ETA

—

Heuristic predictions, AS-IS, for prioritization only.

Mitigations

No mitigations published for this CVE yet.

The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or — if you've already worked around this in production — publish your fix to the community-verified tier.

✚ Propose a mitigation on Community → Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here with source_tier=community-verified.

Exploits

Public proof-of-concept code below. AS-IS, for defenders and authorised testing only.

Exploit-DB

EDB-47133 local linux verified

Google Security Research · 2019-07-17

Linux - Broken Permission and Object Lifetime Handling for PTRACE_TRACEME

Source code queued for fetch — refresh in a moment.

EDB-47163 local linux

bcoles · 2019-07-24

Linux Kernel 4.10 < 5.1.17 - 'PTRACE_TRACEME' pkexec Local Privilege Escalation

Source code queued for fetch — refresh in a moment.

EDB-50541 local linux

Ujas Dhami · 2021-11-23

Linux Kernel 5.1.x - 'PTRACE_TRACEME' pkexec Local Privilege Escalation (2)

Source code queued for fetch — refresh in a moment.

EDB-47543 local linux verified

Metasploit · 2019-10-24

Linux Polkit - pkexec helper PTRACE_TRACEME local root (Metasploit)

Source code queued for fetch — refresh in a moment.

Metasploit modules

exploit_linux/local/ptrace_traceme_pkexec_helper rank 600

Linux Polkit pkexec helper PTRACE_TRACEME local root exploit

Source fetch failed: fetch_error — view the original via the link above.

OS impact

SUSE Affected 1 release

Version	Status	Fixed in
—	Affected	—

Debian Fixed 5 releases

Version	Status	Fixed in
trixie	Fixed	`4.19.37-6`
sid	Fixed	`4.19.37-6`
forky	Fixed	`4.19.37-6`
bullseye	Fixed	`4.19.37-6`
bookworm	Fixed	`4.19.37-6`

Red Hat Fixed 1 release

Version	Status	Fixed in
8	Fixed	—

References

Community-verified mitigations for this CVE will appear above when contributors publish them.

Verify integrity in audit chain (admin only). AS-IS.