OMENWAVE modelled vulnerability-chaining pathways

CVE-2025-38352

In the Linux kernel, the following vulnerability has been resolved: posix-cpu-timers: fix race between handle_posix_cpu_timers() and posix_cpu_timer_del() If an exiting non-autoreaping task has already passed exit_notify() and calls handle_posix_cpu_timers() from IRQ, it can be reaped by its parent or debugger right after unlock_task_sighand(). If a concurrent posix_cpu_timer_del() runs at that moment, it won't be able to detect timer->it.cpu.firing != 0: cpu_timer_task_rcu() and/or lock_task_sighand() will fail. Add the tsk->exit_state check into run_posix_cpu_timers() to fix this. This fix is not needed if CONFIG_POSIX_CPU_TIMERS_TASK_WORK=y, because exit_task_work() is called before exit_notify(). But the check still makes sense, task_work_add(&tsk->posix_cputimers_work.work) will fail anyway in this case.

7.8
CVSS High
1.4%
EPSS p72
YES
In CISA KEV

Data as of 2 Nov 2026 · NVD, CISA KEV, EPSS

Why chaining, at machine speed

Defenders still triage vulnerabilities one CVE at a time, while increasingly automated attackers combine them at machine speed. Omenwave models the plausible pathways by which this CVE could be chained with others — surfacing them for research and awareness, with evidence for each step.

Modelled capability profile
Kill-chain stage
PRIV_ESC
Requires
USER access, LOCAL vector
Grants
PRIV access
Capabilities
code executionprivilege gain
Model confidence
high · CVSS 3.1
Top plausible next hops
CVE-2025-49113PRIV_ESC → EXECUTIONhigh plausibility · KEV

The access level the source grants already meets or exceeds the access level the destination requires — the position carries over.

Roundcube Webmail before 1.5.10 and 1.6.x before 1.6.11 allows remote code execution by authenticated users because the _from parameter in a URL is n…

CVE-2021-39144PRIV_ESC → PRIV_ESChigh plausibility · KEV

The access level the source grants already meets or exceeds the access level the destination requires — the position carries over.

XStream is a simple library to serialize objects to XML and back again. In affected versions this vulnerability may allow a remote attacker has suffi…

CVE-2016-3714PRIV_ESC → EXECUTIONhigh plausibility · KEV

The source lands the attacker on the host (code execution or an established foothold), which satisfies the destination's requirement for local access.

The (1) EPHEMERAL, (2) HTTPS, (3) MVG, (4) MSL, (5) TEXT, (6) SHOW, (7) WIN, and (8) PLT coders in ImageMagick before 6.9.3-10 and 7.x before 7.0.1-1…

CVE-2021-22204PRIV_ESC → EXECUTIONhigh plausibility · KEV

The source lands the attacker on the host (code execution or an established foothold), which satisfies the destination's requirement for local access.

Improper neutralization of user data in the DjVu file format in ExifTool versions 7.44 and up allows arbitrary code execution when parsing the malici…

CVE-2021-3156PRIV_ESC → EXECUTIONhigh plausibility · KEV

The source lands the attacker on the host (code execution or an established foothold), which satisfies the destination's requirement for local access.

Sudo before 1.9.5p2 contains an off-by-one error that can result in a heap-based buffer overflow, which allows privilege escalation to root via "sudo…

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Modelled plausible chaining potential derived from public CVE metadata (CVSS, CWE, CPE). Not a confirmed real-world exploit chain and contains no exploitation detail. For research and awareness only.

Methodology · Interactive explorer · JSON: /cve/CVE-2025-38352