CVE-2021-43057
7.8 HIGHAn issue was discovered in the Linux kernel before 5.14.8
Published: 2021-10-28 · Last updated: 2026-06-17
Severity and scoring
- CVSS
- 7.8 HIGH
- Vector
- CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- CWE
- CWE-416
Affected products
| Vendor | Product |
|---|---|
| linux | h300e_firmware, h300s_firmware, h410c_firmware |
| netapp | h300e_firmware, h300s_firmware, h410c_firmware |
Description
An issue was discovered in the Linux kernel before 5.14.8. A use-after-free in selinux_ptrace_traceme (aka the SELinux handler for PTRACE_TRACEME) could be used by local attackers to cause memory corruption and escalate privileges, aka CID-a3727a8bac0a. This occurs because of an attempt to access the subjective credentials of another task.
Source: NVD
References
- [NVD]https://nvd.nist.gov/vuln/detail/CVE-2021-43057
- [Patch]https://bugs.chromium.org/p/project-zero/issues/detail?id=2229
- [Patch]https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.14.8
- [Patch]https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=a3727a8bac0a9e77c70820655fd8715523ba3db7
- [Other]https://security.netapp.com/advisory/ntap-20211125-0001/
- [Patch]https://bugs.chromium.org/p/project-zero/issues/detail?id=2229
- [Patch]https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.14.8
- [Patch]https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=a3727a8bac0a9e77c70820655fd8715523ba3db7
- [Other]https://security.netapp.com/advisory/ntap-20211125-0001/
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