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CVE-2021-43057

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.

Risk Information

Base Score
7.8
MODERATE
Vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
EPSS Score
Exploitation Probability
0.159

Associated Vulnerability

VulnerabilityOS Platform
Linux kernel (USN-5162-1) linux-image-aws_5.13.0.1007.9_amd64.debLinux
Linux kernel (USN-5162-1) linux-image-gcp_5.13.0.1007.8_amd64.debLinux
Linux kernel (USN-5162-1) linux-image-gke_5.13.0.1007.8_amd64.debLinux
Linux kernel (USN-5162-1) linux-image-kvm_5.13.0.1006.6_amd64.debLinux
Linux kernel (USN-5162-1) linux-image-azure_5.13.0.1008.9_amd64.debLinux
Linux kernel (USN-5162-1) linux-image-oracle_5.13.0.1010.12_amd64.debLinux
Linux kernel (USN-5162-1) linux-image-generic_5.13.0.22.33_amd64.debLinux
Linux kernel (USN-5162-1) linux-image-virtual_5.13.0.22.33_amd64.debLinux
Linux kernel (USN-5162-1) linux-image-oem-20.04_5.13.0.22.33_amd64.debLinux
Linux kernel (USN-5162-1) linux-image-lowlatency_5.13.0.22.33_amd64.debLinux
Linux kernel (USN-5162-1) linux-image-oem-20.04c_5.13.0.1020.24_amd64.debLinux
Linux kernel (USN-5162-1) linux-image-5.13.0-1006-kvm_5.13.0-1006.6_amd64.debLinux
Linux kernel (USN-5162-1) linux-image-5.13.0-1007-aws_5.13.0-1007.8_amd64.debLinux
Linux kernel (USN-5162-1) linux-image-5.13.0-1007-gcp_5.13.0-1007.8_amd64.debLinux
Linux kernel (USN-5162-1) linux-image-5.13.0-1020-oem_5.13.0-1020.24_amd64.debLinux
Linux kernel (USN-5162-1) linux-image-5.13.0-1008-azure_5.13.0-1008.9_amd64.debLinux
Linux kernel (USN-5162-1) linux-image-5.13.0-22-generic_5.13.0-22.22_amd64.debLinux
Linux kernel (USN-5162-1) linux-image-5.13.0-1010-oracle_5.13.0-1010.12_amd64.debLinux
Linux kernel (USN-5162-1) linux-image-5.13.0-22-lowlatency_5.13.0-22.22_amd64.debLinux

Patch Details

No records found

References

https://nvd.nist.gov/vuln/detail/CVE-2023-1234
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-1234