HID: picolcd: prevent NULL pointer dereference in picolcd_send_and_wait()
In picolcd_send_and_wait(), an integer overflow of the signed loop counter
'k' can theoretically lead to a NULL pointer dereference of 'raw_data'.
If the loop executes more than INT_MAX times, 'k' becomes negative,
making the condition 'k < size' true even when 'size' is 0.
Change the type of 'k' to 'unsigned int' to prevent the overflow and
eliminate the out-of-bounds access.
Found by Linux Verification Center (linuxtesting.org) with the Svace static
analysis tool.
[jkosina@suse.com: extended hash length]
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
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| Linux | Linux | unaffected |
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| Linux | Linux | affected |
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No data.
No data.
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| Vendors | Products |
|---|---|
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Linux
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Linux Kernel
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Solution
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Workaround
No workaround given by the vendor.
Fri, 28 Aug 2026 15:00:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Weaknesses | CWE-190 CWE-476 |
Fri, 28 Aug 2026 07:30:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Description | In the Linux kernel, the following vulnerability has been resolved: HID: picolcd: prevent NULL pointer dereference in picolcd_send_and_wait() In picolcd_send_and_wait(), an integer overflow of the signed loop counter 'k' can theoretically lead to a NULL pointer dereference of 'raw_data'. If the loop executes more than INT_MAX times, 'k' becomes negative, making the condition 'k < size' true even when 'size' is 0. Change the type of 'k' to 'unsigned int' to prevent the overflow and eliminate the out-of-bounds access. Found by Linux Verification Center (linuxtesting.org) with the Svace static analysis tool. [jkosina@suse.com: extended hash length] | |
| Title | HID: picolcd: prevent NULL pointer dereference in picolcd_send_and_wait() | |
| First Time appeared |
Linux
Linux linux Kernel |
|
| CPEs | cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | |
| Vendors & Products |
Linux
Linux linux Kernel |
|
| References |
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Projects
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MITRE
Status: PUBLISHED
Assigner: Linux
Published:
Updated: 2026-08-28T06:48:30.362Z
Reserved: 2026-08-26T14:34:25.772Z
Link: CVE-2026-80605
Vulnrichment
No data.
NVD
Status : Received
Published: 2026-08-28T08:16:44.450
Modified: 2026-08-28T08:16:44.450
Link: CVE-2026-80605
Redhat
No data.
OpenCVE Enrichment
Updated: 2026-08-28T14:45:06Z