CVE-2026-49426
Published:August 19, 2026
Updated:September 23, 2026
When auditing a system call executed via ptrace(PT_SC_REMOTE), the kernel passed the return value of an internal setup function to AUDIT_SYSCALL_EXIT() rather than the actual result of the executed system call. As a result, committed audit records for system calls which returned an error do not reflect the true outcome of the operation. That is, they indicate that the operation succeeded when it in fact failed.
Audit records for system calls executed via ptrace(PT_SC_REMOTE) may show an incorrect error status. An attacker with the ability to debug a process could use this to produce misleading audit trails, potentially undermining audit-based Intrusion Detection Systems (IDS).
Affected Packages
https://github.com/freebsd/freebsd-src.git (GITHUB):
Affected version(s) =release/15.1.0 <release/15.1.0-p1Fix Suggestion:
Update to version release/15.1.0-p1https://github.com/freebsd/freebsd-src.git (GITHUB):
Affected version(s) >=release/14.4.0 <release/14.4.0-p7Fix Suggestion:
Update to version release/14.4.0-p7https://github.com/freebsd/freebsd-src.git (GITHUB):
Affected version(s) >=release/15.0.0 <release/15.0.0-p11Fix Suggestion:
Update to version release/15.0.0-p11https://github.com/freebsd/freebsd-src.git (GITHUB):
Affected version(s) >=release/14.3.0 <release/14.3.0-p16Fix Suggestion:
Update to version release/14.3.0-p16Related Resources (1)
Do you need more information?
Contact UsCVSS v4
Base Score:
4.8
Attack Vector
LOCAL
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
LOW
User Interaction
NONE
Vulnerable System Confidentiality
NONE
Vulnerable System Integrity
LOW
Vulnerable System Availability
NONE
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
3.3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
LOW
Availability
NONE
Weakness Type (CWE)
EPSS
Base Score:
0.10