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To retrieve the previous timer value, the kernel calls realtimer_gettime(), which obtains the current time for the timer's clock. (CVE-2026-58084)

0
Unknown
Published: 08/19/2026 (08/19/2026, 09:31:23 UTC)
Source: GCVE Database

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.

Technical Details

Gcve Source
db.gcve.eu
Osv Id
GHSA-p4v3-cw55-5mrc
Osv Schema Version
1.4.0
Aliases
["CVE-2026-58084"]
Ecosystems
[]
Database Specific Severity
null
Cvss Version
null

Threat ID: 6a85b4a4acd9273b492507a7

Added to database: 08/19/2026, 13:50:28 UTC

Last updated: 08/19/2026, 13:51:31 UTC

Views: 1

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