Bug 2426239 (CVE-2022-50830)

Summary: CVE-2022-50830 kernel: auxdisplay: hd44780: Fix potential memory leak in hd44780_remove()
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
Status: NEW --- QA Contact:
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Version: unspecifiedCC: rhel-process-autobot, watson-tool-maintainers
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Hardware: All   
OS: Linux   
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Description OSIDB Bzimport 2025-12-30 13:18:40 UTC 
In the Linux kernel, the following vulnerability has been resolved:

auxdisplay: hd44780: Fix potential memory leak in hd44780_remove()

hd44780_probe() allocates a memory chunk for hd with kzalloc() and
makes "lcd->drvdata->hd44780" point to it. When we call hd44780_remove(),
we should release all relevant memory and resource. But "lcd->drvdata
->hd44780" is not released, which will lead to a memory leak.

We should release the "lcd->drvdata->hd44780" in hd44780_remove() to fix
the memory leak bug.
Comment 1 Alexander B 2025-12-30 22:59:43 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2025123016-CVE-2022-50830-ea74@gregkh/T