Vulnerability Details CVE-2023-52731
In the Linux kernel, the following vulnerability has been resolved:
fbdev: Fix invalid page access after closing deferred I/O devices
When a fbdev with deferred I/O is once opened and closed, the dirty
pages still remain queued in the pageref list, and eventually later
those may be processed in the delayed work. This may lead to a
corruption of pages, hitting an Oops.
This patch makes sure to cancel the delayed work and clean up the
pageref list at closing the device for addressing the bug. A part of
the cleanup code is factored out as a new helper function that is
called from the common fb_release().
Exploit prediction scoring system (EPSS) score
EPSS Score 0.001
EPSS Ranking 32.4%
CVSS Severity
CVSS v3 Score 7.8
References
- https://git.kernel.org/stable/c/3efc61d95259956db25347e2a9562c3e54546e20
- https://git.kernel.org/stable/c/87b9802ca824fcee7915e717e9a60471af62e8e9
- https://git.kernel.org/stable/c/f1d91f0e9d5a240a809698d7d9c5a538e7dcc149
- https://git.kernel.org/stable/c/3efc61d95259956db25347e2a9562c3e54546e20
- https://git.kernel.org/stable/c/87b9802ca824fcee7915e717e9a60471af62e8e9
- https://git.kernel.org/stable/c/f1d91f0e9d5a240a809698d7d9c5a538e7dcc149
Products affected by CVE-2023-52731
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cpe:2.3:o:linux:linux_kernel:5.19
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cpe:2.3:o:linux:linux_kernel:5.19.1
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cpe:2.3:o:linux:linux_kernel:5.19.10
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cpe:2.3:o:linux:linux_kernel:5.19.11
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cpe:2.3:o:linux:linux_kernel:5.19.12
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cpe:2.3:o:linux:linux_kernel:5.19.13
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cpe:2.3:o:linux:linux_kernel:5.19.14
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cpe:2.3:o:linux:linux_kernel:5.19.15
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cpe:2.3:o:linux:linux_kernel:5.19.16
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cpe:2.3:o:linux:linux_kernel:5.19.17
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cpe:2.3:o:linux:linux_kernel:5.19.2
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cpe:2.3:o:linux:linux_kernel:5.19.3
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cpe:2.3:o:linux:linux_kernel:5.19.4
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cpe:2.3:o:linux:linux_kernel:5.19.5
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cpe:2.3:o:linux:linux_kernel:5.19.6
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cpe:2.3:o:linux:linux_kernel:5.19.7
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cpe:2.3:o:linux:linux_kernel:5.19.8
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cpe:2.3:o:linux:linux_kernel:5.19.9
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cpe:2.3:o:linux:linux_kernel:6.0
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cpe:2.3:o:linux:linux_kernel:6.0.1
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cpe:2.3:o:linux:linux_kernel:6.0.10
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cpe:2.3:o:linux:linux_kernel:6.0.11
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cpe:2.3:o:linux:linux_kernel:6.0.12
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cpe:2.3:o:linux:linux_kernel:6.0.13
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cpe:2.3:o:linux:linux_kernel:6.0.14
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cpe:2.3:o:linux:linux_kernel:6.0.15
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cpe:2.3:o:linux:linux_kernel:6.0.16
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cpe:2.3:o:linux:linux_kernel:6.0.17
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cpe:2.3:o:linux:linux_kernel:6.0.18
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cpe:2.3:o:linux:linux_kernel:6.0.19
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cpe:2.3:o:linux:linux_kernel:6.0.2
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cpe:2.3:o:linux:linux_kernel:6.0.3
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cpe:2.3:o:linux:linux_kernel:6.0.4
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cpe:2.3:o:linux:linux_kernel:6.0.5
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cpe:2.3:o:linux:linux_kernel:6.0.6
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cpe:2.3:o:linux:linux_kernel:6.0.7
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cpe:2.3:o:linux:linux_kernel:6.0.8
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cpe:2.3:o:linux:linux_kernel:6.0.9
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cpe:2.3:o:linux:linux_kernel:6.1
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cpe:2.3:o:linux:linux_kernel:6.1.0
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cpe:2.3:o:linux:linux_kernel:6.1.1
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cpe:2.3:o:linux:linux_kernel:6.1.10
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cpe:2.3:o:linux:linux_kernel:6.1.11
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cpe:2.3:o:linux:linux_kernel:6.1.12
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cpe:2.3:o:linux:linux_kernel:6.1.2
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cpe:2.3:o:linux:linux_kernel:6.1.3
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cpe:2.3:o:linux:linux_kernel:6.1.4
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cpe:2.3:o:linux:linux_kernel:6.1.5
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cpe:2.3:o:linux:linux_kernel:6.1.6
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cpe:2.3:o:linux:linux_kernel:6.1.7
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cpe:2.3:o:linux:linux_kernel:6.1.8
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cpe:2.3:o:linux:linux_kernel:6.1.9
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cpe:2.3:o:linux:linux_kernel:6.2