Bug 2297508 (CVE-2024-40924) - CVE-2024-40924 kernel: drm/i915/dpt: Make DPT object unshrinkable
Summary: CVE-2024-40924 kernel: drm/i915/dpt: Make DPT object unshrinkable
Keywords:
Status: NEW
Alias: CVE-2024-40924
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
low
low
Target Milestone: ---
Assignee: Product Security DevOps Team
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Blocks:
TreeView+ depends on / blocked
 
Reported: 2024-07-12 13:33 UTC by OSIDB Bzimport
Modified: 2024-07-26 05:44 UTC (History)
4 users (show)

Fixed In Version: kernel 6.1.95, kernel 6.6.35, kernel 6.9.6, kernel 6.10-rc2
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Description OSIDB Bzimport 2024-07-12 13:33:12 UTC 
In the Linux kernel, the following vulnerability has been resolved:

drm/i915/dpt: Make DPT object unshrinkable

In some scenarios, the DPT object gets shrunk but
the actual framebuffer did not and thus its still
there on the DPT's vm->bound_list. Then it tries to
rewrite the PTEs via a stale CPU mapping. This causes panic.

[vsyrjala: Add TODO comment]
(cherry picked from commit 51064d471c53dcc8eddd2333c3f1c1d9131ba36c)
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