Bug 2525482 (CVE-2026-80650)

Summary: CVE-2026-80650 kernel: media: atomisp: gc2235: fix UAF and memory leak
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
Status: NEW --- QA Contact:
Severity: medium Docs Contact:
Priority: medium    
Version: unspecifiedCC: rhel-process-autobot, watson-tool-maintainers
Target Milestone: ---Keywords: Security
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Hardware: All   
OS: Linux   
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A flaw was found in the Linux kernel's media: atomisp: gc2235 module. This vulnerability arises from incorrect error handling during the module's initialization process. Specifically, a use-after-free (UAF) condition can occur, where the system attempts to use memory that has already been released, potentially allowing a local attacker to gain elevated privileges or cause the system to crash. Additionally, a memory leak can occur, consuming system resources and leading to a denial of service.
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Description OSIDB Bzimport 2026-08-28 07:47:15 UTC 
In the Linux kernel, the following vulnerability has been resolved:

media: atomisp: gc2235: fix UAF and memory leak

gc2235_probe() handles its error paths incorrectly.

If media_entity_pads_init() fails, gc2235_remove() is called, which
tears down the subdev and frees dev, but then still falls through to
atomisp_register_i2c_module(). This results in use-after-free.

If atomisp_register_i2c_module() fails, the media entity and control
handler are left initialized and dev is leaked.

gc2235_remove() unconditionally calls media_entity_cleanup() and
v4l2_ctrl_handler_free(), but these are not initialized at every
error path in gc2235_probe().

Replace gc2235_remove() calls in the probe error paths with explicit
unwind labels that free only the resources initialized at each point
of failure, in reverse order of initialization.
Comment 1 gkamathe 2026-08-31 14:42:42 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2026082843-CVE-2026-80650-abdd@gregkh/T