CVE-2026-58084 Details
Description
To retrieve the previous timer value, the kernel calls realtimer_gettime(), which obtains the current time for the timer's clock. For a timer using CLOCK_TAI this can fail when no TAI offset has been configured, but the error return was not checked, so the uninitialized output buffer was copied to userspace. An unprivileged local user can obtain uninitialized kernel stack memory by creating a POSIX timer with CLOCK_TAI and calling timer_settime(2), potentially disclosing sensitive kernel data.
Metrics
CVSS 4.0 Severity and Vector Strings:
No CVSS 4.0 data is available for this CVE.
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
CISA-ADP
Assessed Aug 26, 2026References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://security.freebsd.org/advisories/FreeBSD-SA-26:51.ktimer.asc | [email protected] | Vendor Advisory |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-908 | Use of Uninitialized Resource | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| freebsd freebsd | 15.0 - 15.0 p1 15.0 p10 15.0 p11 15.0 p2 15.0 p3 15.0 p4 15.0 p5 15.0 p6 15.0 p7 15.0 p8 15.0 p9 15.1 - 15.1 p1 15.1 rc2 15.1 rc3-p1 |
CPE
Remediation
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Change History
4 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Aug 31, 2026 | Initial Analysis | [email protected] |
| Aug 26, 2026 | CVE Modified | [email protected] |
| Aug 26, 2026 | CVE Modified | CISA-ADP |
| Aug 19, 2026 | New CVE Received | [email protected] |