Linux · Kernel
CVE-2019-13272
Linux Kernel Improper Privilege Management Vulnerability
这是什么
In the Linux kernel before 5.1.17, ptrace_link in kernel/ptrace.c mishandles the recording of the credentials of a process that wants to create a ptrace relationship, which allows local users to obtain root access by leveraging certain scenarios with a parent-child process relationship, where a parent drops privileges and calls execve (potentially allowing control by an attacker). One contributing factor is an object lifetime issue (which can also cause a panic). Another contributing factor is incorrect marking of a ptrace relationship as privileged, which is exploitable through (for example) Polkit's pkexec helper with PTRACE_TRACEME. NOTE: SELinux deny_ptrace might be a usable workaround in some environments.
CISA: Kernel/ptrace.c in Linux kernel mishandles contains an improper privilege management vulnerability that allows local users to obtain root access.
该怎么做
Apply updates per vendor instructions.
美国联邦机构的修复期限:2022年6月10日
- 加入 CISA 列表
- 2021年12月10日
- 发布日期
- 2019年7月17日
- 严重程度
- 高 7.8 CVSS 3.1
- 未来 30 天遭受攻击的概率(EPSS)
- 52% 位列所有已知漏洞的前 1.0%
- 弱点类型
- CWE-269
- 更多详情
- NVD · CVE.org · CISA
全部参考链接(20)
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/OGRK5LYWBJ4E…
- https://www.debian.org/security/2019/dsa-4484
- https://access.redhat.com/errata/RHSA-2019:2405
- https://access.redhat.com/errata/RHSA-2019:2411
- https://usn.ubuntu.com/4093-1/
- https://usn.ubuntu.com/4094-1/
- https://usn.ubuntu.com/4095-1/
- http://packetstormsecurity.com/files/153663/Linux-PTRACE_TRACEME-Broken-Permission-Object-Lifetime-Handling.h…
- https://bugs.chromium.org/p/project-zero/issues/detail?id=1903
- https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.1.17
- https://github.com/torvalds/linux/commit/6994eefb0053799d2e07cd140df6c2ea106c41ee
- https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=6994eefb0053799d2e07cd140df6c2ea10…
- https://bugzilla.suse.com/show_bug.cgi?id=1140671
- https://bugzilla.redhat.com/show_bug.cgi?id=1730895
- https://seclists.org/bugtraq/2019/Jul/30
- https://seclists.org/bugtraq/2019/Jul/33
- https://lists.debian.org/debian-lts-announce/2019/07/msg00022.html
- https://lists.debian.org/debian-lts-announce/2019/07/msg00023.html
- http://packetstormsecurity.com/files/153702/Slackware-Security-Advisory-Slackware-14.2-kernel-Updates.html
- https://security.netapp.com/advisory/ntap-20190806-0001/
Linux 的其他被利用漏洞
| 加入日期 | 漏洞 | 产品 | 严重程度 | 受攻击概率 |
|---|---|---|---|---|
| 2026年9月18日 | Improper Check for Unusual or Exceptional Conditions | Kernel | 严重 9.8 | 3.3% |
| 2026年9月18日 | Race Condition | Kernel | 高 7.8 | 1.6% |
| 2026年9月18日 | Out-of-Bounds Write | Kernel | 高 8.8 | 0.9% |
| 2026年8月27日 | Unspecified | Kernel | 高 7.8 | 0.7% |
| 2026年8月26日 | Out-of-Bounds Write | Kernel | 高 7.8 | 8.9% |
| 2026年6月2日 | Improper Authentication | Kernel | 高 7.8 | 5.5% |
| 2026年5月1日 | Incorrect Resource Transfer Between Spheres | Kernel | 高 7.8 | 98% |
| 2026年1月26日 | Integer Overflow | Kernel | 高 7.8 | 15% |
来源:Known Exploited Vulnerabilities(CISA,公有领域)、CVE records(cve.org)和 EPSS(FIRST)。受攻击概率是 EPSS 对未来 30 天内有人尝试利用该漏洞的估计。