PT-2025-49747 · Linux+1 · Linux Kernel+1
Published
2023-01-01
·
Updated
2026-03-24
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CVE-2023-53856
None
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Name of the Vulnerable Software and Affected Versions
Linux kernel (affected versions not specified)
Description
A flaw exists in the Linux kernel’s overlay functionality where a call to
of changeset init() occurs prematurely. Specifically, if of overlay fdt apply() fails, a partial state may remain, requiring cleanup via of overlay remove(). However, of overlay apply() calls of resolve phandles() before init overlay changeset(), leading to a potential NULL-pointer dereference in overlay removal is ok() if an unresolved symbol causes the overlay to fail during application. This occurs because the overlay changeset.cset.entries list is uninitialized. The issue is addressed by moving the call to of changeset init() to of overlay fdt apply(), aligning it with other early initialization steps.Recommendations
At the moment, there is no information about a newer version that contains a fix for this vulnerability.
Exploit
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Related Identifiers
Affected Products
Debian
Linux Kernel