Bug 2426239 (CVE-2022-50830) - CVE-2022-50830 kernel: auxdisplay: hd44780: Fix potential memory leak in hd44780_remove()
Summary: CVE-2022-50830 kernel: auxdisplay: hd44780: Fix potential memory leak in hd44...
Keywords:
Status: NEW
Alias: CVE-2022-50830
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
unspecified
unspecified
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2025-12-30 13:18 UTC by OSIDB Bzimport
Modified: 2026-06-29 18:24 UTC (History)
2 users (show)

Fixed In Version:
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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
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