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CVE-2025-68296

N/A ALL-YEARS

Published 2025-12-16 · Last modified 2026-06-19 · Linux · NVD: Deferred

In the Linux kernel, the following vulnerability has been resolved: drm, fbcon, vga_switcheroo: Avoid race condition in fbcon setup Protect vga_switcheroo_client_fb_set() with console lock. Avoids OOB access in fbcon_remap_all(). Without holding the console lock the call races with switching outputs. VGA switcheroo calls fbcon_remap_all() when switching clients. The fbcon function uses struct fb_info.node, which is set by register_framebuffer(). As the fb-helper code currently sets up VGA switcheroo before registering the framebuffer, the value of node is -1 and therefore not a legal value. For example, fbcon uses the value within set_con2fb_map() [1] as an index into an array. Moving vga_switcheroo_client_fb_set() after register_framebuffer() can result in VGA switching that does not switch fbcon correctly. Therefore move vga_switcheroo_client_fb_set() under fbcon_fb_registered(), which already holds the console lock. Fbdev calls fbcon_fb_registered() from within register_framebuffer(). Serializes the helper with VGA switcheroo's call to fbcon_remap_all(). Although vga_switcheroo_client_fb_set() takes an instance of struct fb_info as parameter, it really only needs the contained fbcon state. Moving the call to fbcon initialization is therefore cleaner than before. Only amdgpu, i915, nouveau and radeon support vga_switcheroo. For all other drivers, this change does nothing.

LIMITED SIGNALS

No known exploitation, public exploit, or elevated probability at this time. Track for changes.

Exploitation likelihood

0.2%chance of exploitation in 30 days · 10th percentile

○ In CISA KEV○ Catalogued PoC

Impact if exploited

—CVSS · not scored

  • No impact metrics

Proof of concept

No public PoC is currently catalogued.

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Affected

Vendors Linux

Products Linux

Weakness (CWE)

Not classified.

CVSS vector

Not yet scored.

References and research data (JSON)

Vendor product assessments

Showing 32 of 274 vendor product statements; 242 omitted. Read the full vendor advisory.

  • kernel as a component of Red Hat Enterprise Linux 10 · known affected

    Vendor assessment for this product only.

    pkg:rpm/redhat/kernel

    • none available: Fix deferred
    Red Hat · CVE-2025-68296 · Updated 2026-06-30T01:42:51+00:00
  • kernel-abi-stablelists as a component of Red Hat Enterprise Linux 10 · known affected

    Vendor assessment for this product only.

    pkg:rpm/redhat/kernel-abi-stablelists

    • none available: Fix deferred
    Red Hat · CVE-2025-68296 · Updated 2026-06-30T01:42:51+00:00
  • kernel-modules-extra as a component of Red Hat Enterprise Linux 10 · known affected

    Vendor assessment for this product only.

    pkg:rpm/redhat/kernel-modules-extra

    • none available: Fix deferred
    Red Hat · CVE-2025-68296 · Updated 2026-06-30T01:42:51+00:00
  • kernel-rt-debug as a component of Red Hat Enterprise Linux 10 · known affected

    Vendor assessment for this product only.

    pkg:rpm/redhat/kernel-rt-debug

    • none available: Fix deferred
    Red Hat · CVE-2025-68296 · Updated 2026-06-30T01:42:51+00:00
  • kernel-uki-virt as a component of Red Hat Enterprise Linux 10 · known affected

    Vendor assessment for this product only.

    pkg:rpm/redhat/kernel-uki-virt

    • none available: Fix deferred
    Red Hat · CVE-2025-68296 · Updated 2026-06-30T01:42:51+00:00
  • bpftool as a component of Red Hat Enterprise Linux 7 · known affected

    Vendor assessment for this product only.

    pkg:rpm/redhat/bpftool

    • none available: Fix deferred
    Red Hat · CVE-2025-68296 · Updated 2026-06-30T01:42:51+00:00
  • kernel-rt-devel as a component of Red Hat Enterprise Linux 7 · known affected

    Vendor assessment for this product only.

    pkg:rpm/redhat/kernel-rt-devel

    • none available: Fix deferred
    Red Hat · CVE-2025-68296 · Updated 2026-06-30T01:42:51+00:00
  • kernel-abi-whitelists as a component of Red Hat Enterprise Linux 8 · known affected

    Vendor assessment for this product only.

    pkg:rpm/redhat/kernel-abi-whitelists

    • none available: Fix deferred
    Red Hat · CVE-2025-68296 · Updated 2026-06-30T01:42:51+00:00
  • kernel-modules-internal as a component of Red Hat Enterprise Linux 8 · known affected

    Vendor assessment for this product only.

    pkg:rpm/redhat/kernel-modules-internal

    • none available: Fix deferred
    Red Hat · CVE-2025-68296 · Updated 2026-06-30T01:42:51+00:00
  • kernel-rt-selftests-internal as a component of Red Hat Enterprise Linux 8 · known affected

    Vendor assessment for this product only.

    pkg:rpm/redhat/kernel-rt-selftests-internal

    • none available: Fix deferred
    Red Hat · CVE-2025-68296 · Updated 2026-06-30T01:42:51+00:00
  • bpftool as a component of Red Hat Enterprise Linux 9 · known affected

    Vendor assessment for this product only.

    pkg:rpm/redhat/bpftool

    • none available: Fix deferred
    Red Hat · CVE-2025-68296 · Updated 2026-06-30T01:42:51+00:00
  • kernel-64k-modules-core as a component of Red Hat Enterprise Linux 9 · known affected

    Vendor assessment for this product only.

    pkg:rpm/redhat/kernel-64k-modules-core

    • none available: Fix deferred
    Red Hat · CVE-2025-68296 · Updated 2026-06-30T01:42:51+00:00
  • kernel-debug-modules-partner as a component of Red Hat Enterprise Linux 9 · known affected

    Vendor assessment for this product only.

    pkg:rpm/redhat/kernel-debug-modules-partner

    • none available: Fix deferred
    Red Hat · CVE-2025-68296 · Updated 2026-06-30T01:42:51+00:00
  • kernel-rt-64k-core as a component of Red Hat Enterprise Linux 9 · known affected

    Vendor assessment for this product only.

    pkg:rpm/redhat/kernel-rt-64k-core

    • none available: Fix deferred
    Red Hat · CVE-2025-68296 · Updated 2026-06-30T01:42:51+00:00
  • kernel-rt-64k-modules-core as a component of Red Hat Enterprise Linux 9 · known affected

    Vendor assessment for this product only.

    pkg:rpm/redhat/kernel-rt-64k-modules-core

    • none available: Fix deferred
    Red Hat · CVE-2025-68296 · Updated 2026-06-30T01:42:51+00:00
  • kernel-rt-devel-matched as a component of Red Hat Enterprise Linux 9 · known affected

    Vendor assessment for this product only.

    pkg:rpm/redhat/kernel-rt-devel-matched

    • none available: Fix deferred
    Red Hat · CVE-2025-68296 · Updated 2026-06-30T01:42:51+00:00
  • kernel-zfcpdump as a component of Red Hat Enterprise Linux 9 · known affected

    Vendor assessment for this product only.

    pkg:rpm/redhat/kernel-zfcpdump

    • none available: Fix deferred
    Red Hat · CVE-2025-68296 · Updated 2026-06-30T01:42:51+00:00
  • rv as a component of Red Hat Enterprise Linux 9 · known affected

    Vendor assessment for this product only.

    pkg:rpm/redhat/rv

    • none available: Fix deferred
    Red Hat · CVE-2025-68296 · Updated 2026-06-30T01:42:51+00:00
  • kernel as a component of Red Hat Enterprise Linux 6 · known not affected

    Vendor assessment for this product only.

    Reason: vulnerable code not present

    pkg:rpm/redhat/kernel

    Red Hat · CVE-2025-68296 · Updated 2026-06-30T01:42:51+00:00
  • kernel-abi-whitelists as a component of Red Hat Enterprise Linux 6 · known not affected

    Vendor assessment for this product only.

    Reason: vulnerable code not present

    pkg:rpm/redhat/kernel-abi-whitelists

    Red Hat · CVE-2025-68296 · Updated 2026-06-30T01:42:51+00:00
  • kernel-bootwrapper as a component of Red Hat Enterprise Linux 6 · known not affected

    Vendor assessment for this product only.

    Reason: vulnerable code not present

    pkg:rpm/redhat/kernel-bootwrapper

    Red Hat · CVE-2025-68296 · Updated 2026-06-30T01:42:51+00:00
  • kernel-debug as a component of Red Hat Enterprise Linux 6 · known not affected

    Vendor assessment for this product only.

    Reason: vulnerable code not present

    pkg:rpm/redhat/kernel-debug

    Red Hat · CVE-2025-68296 · Updated 2026-06-30T01:42:51+00:00
  • kernel-debug-devel as a component of Red Hat Enterprise Linux 6 · known not affected

    Vendor assessment for this product only.

    Reason: vulnerable code not present

    pkg:rpm/redhat/kernel-debug-devel

    Red Hat · CVE-2025-68296 · Updated 2026-06-30T01:42:51+00:00
  • kernel-devel as a component of Red Hat Enterprise Linux 6 · known not affected

    Vendor assessment for this product only.

    Reason: vulnerable code not present

    pkg:rpm/redhat/kernel-devel

    Red Hat · CVE-2025-68296 · Updated 2026-06-30T01:42:51+00:00
  • kernel-doc as a component of Red Hat Enterprise Linux 6 · known not affected

    Vendor assessment for this product only.

    Reason: vulnerable code not present

    pkg:rpm/redhat/kernel-doc

    Red Hat · CVE-2025-68296 · Updated 2026-06-30T01:42:51+00:00
  • kernel-firmware as a component of Red Hat Enterprise Linux 6 · known not affected

    Vendor assessment for this product only.

    Reason: vulnerable code not present

    pkg:rpm/redhat/kernel-firmware

    Red Hat · CVE-2025-68296 · Updated 2026-06-30T01:42:51+00:00
  • kernel-headers as a component of Red Hat Enterprise Linux 6 · known not affected

    Vendor assessment for this product only.

    Reason: vulnerable code not present

    pkg:rpm/redhat/kernel-headers

    Red Hat · CVE-2025-68296 · Updated 2026-06-30T01:42:51+00:00
  • kernel-kdump as a component of Red Hat Enterprise Linux 6 · known not affected

    Vendor assessment for this product only.

    Reason: vulnerable code not present

    pkg:rpm/redhat/kernel-kdump

    Red Hat · CVE-2025-68296 · Updated 2026-06-30T01:42:51+00:00
  • kernel-kdump-devel as a component of Red Hat Enterprise Linux 6 · known not affected

    Vendor assessment for this product only.

    Reason: vulnerable code not present

    pkg:rpm/redhat/kernel-kdump-devel

    Red Hat · CVE-2025-68296 · Updated 2026-06-30T01:42:51+00:00
  • kernel.src as a component of Red Hat Enterprise Linux 6 · known not affected

    Vendor assessment for this product only.

    Reason: vulnerable code not present

    pkg:rpm/redhat/kernel?arch=src

    Red Hat · CVE-2025-68296 · Updated 2026-06-30T01:42:51+00:00
  • perf as a component of Red Hat Enterprise Linux 6 · known not affected

    Vendor assessment for this product only.

    Reason: vulnerable code not present

    pkg:rpm/redhat/perf

    Red Hat · CVE-2025-68296 · Updated 2026-06-30T01:42:51+00:00
  • python-perf as a component of Red Hat Enterprise Linux 6 · known not affected

    Vendor assessment for this product only.

    Reason: vulnerable code not present

    pkg:rpm/redhat/python-perf

    Red Hat · CVE-2025-68296 · Updated 2026-06-30T01:42:51+00:00

References

Advisories

Technical & other

Sources: NVD · CVE.org · All sources and attribution · EPSS