auxdisplay: hd44780: Fix potential memory leak in hd44780_remove()
Published Dec 30, 2025
No CVSS score
EPSS 0.24%
Description
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.
Affected products
-
Affected
- ≥ , <
- ≥ , <
- ≥ , <
- ≥ , <
-
Affected
- 5.11
Unaffected
- ≥ 0, < 5.11
- ≥ 5.15.100, ≤ 5.15.*
- ≥ 6.1.18, ≤ 6.1.*
- ≥ 6.2.5, ≤ 6.2.*
- 6.3
Default status is the baseline for the product. Each version can override it (patched versions can be marked unaffected).
No data.
No data.
Red Hat Enterprise Linux 10
kernel
Not affected
Red Hat Enterprise Linux 6
kernel
Not affected
Red Hat Enterprise Linux 7
kernel
Not affected
Red Hat Enterprise Linux 7
kernel-rt
Not affected
Red Hat Enterprise Linux 8
kernel
Not affected
Red Hat Enterprise Linux 8
kernel-rt
Not affected
Red Hat Enterprise Linux 9
kernel
Not affected
Red Hat Enterprise Linux 9
kernel-rt
Not affected
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 10 | kernel | Not affected | n/a |
| Red Hat Enterprise Linux 6 | kernel | Not affected | n/a |
| Red Hat Enterprise Linux 7 | kernel | Not affected | n/a |
| Red Hat Enterprise Linux 7 | kernel-rt | Not affected | n/a |
| Red Hat Enterprise Linux 8 | kernel | Not affected | n/a |
| Red Hat Enterprise Linux 8 | kernel-rt | Not affected | n/a |
| Red Hat Enterprise Linux 9 | kernel | Not affected | n/a |
| Red Hat Enterprise Linux 9 | kernel-rt | Not affected | n/a |
No package ranges for this CVE.
Remediation
No remediation recorded yet.
No CWE recorded.
References (10)
- https://access.redhat.com/security/cve/CVE-2022-50830 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=2426239 Issue Tracking
- https://euvd.enisa.europa.eu/vulnerability/EUVD-2022-55868 Advisory
- https://git.kernel.org/stable/c/5d407911e605702ffcc0e97a6db546592ab27dd0
- https://git.kernel.org/stable/c/6cd37f8232f5e169a723e1d5fbe3b2139c2ef763
- https://git.kernel.org/stable/c/8311961a1724bfc64390c539dedc31e067a80315
- https://git.kernel.org/stable/c/ddf75a86aba2cfb7ec4497e8692b60c8c8fe0ee7
- https://lore.kernel.org/linux-cve-announce/2025123016-CVE-2022-50830-ea74@gregkh/T
- https://nvd.nist.gov/vuln/detail/CVE-2022-50830
- https://www.cve.org/CVERecord?id=CVE-2022-50830
Change history (0)
No recorded changes yet.
CVE.org / MITRE
CISA Vulnrichment
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GitHub
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