HID: picolcd: prevent NULL pointer dereference in picolcd_send_and_wait()
Key facts
- Attack vector
- —
- Privileges required
- —
- User interaction
- —
- Attack complexity
- —
- Impact type
- —
- Confidentiality · integrity · availability
- —
- Fix status
- Partial Red Hat: 4 without a fix
No CVSS vector from any source. Fix status from CNA and Red Hat.
Summary
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. [[email protected]: extended hash length]
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
Remediation
- Fix · CNA Linux (Linux) Fixed in 5.10.261, 5.15.212, 6.1.178, 6.6.145, 6.12.97, 6.18.40, 7.1.5, 7.2
Vendor assessments
Red Hat
Red Hat rating: Low. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Enterprise Linux 10 | Affected | No fix yet: Fix deferred |
| Red Hat Enterprise Linux 7 | Affected | No fix yet: Fix deferred |
| Red Hat Enterprise Linux 8 | Affected | No fix yet: Fix deferred |
| Red Hat Enterprise Linux 9 | Affected | No fix yet: Fix deferred |
Not affected: 1 product
- Red Hat Enterprise Linux 6
Timeline
- 2026-10-02 Threatist record created from CVE-2026-80605
- 2026-10-03 Alias added: GHSA-g689-gjw8-39fq
- 2026-11-06 CISA SSVC decision points changed
References
Other 8
- https://git.kernel.org/stable/c/42dc0b7b55fe0499fc09183f34a1c46d1dcccf77
- https://git.kernel.org/stable/c/48caee2c106b03301c72fe389ebff00d852c58d5
- https://git.kernel.org/stable/c/dc176447c7279435c46735db7da81aed1ec25cc2
- https://git.kernel.org/stable/c/a02d5d7ad7ae5fa3756b8332f7350e973085dcb3
- https://git.kernel.org/stable/c/e4edeefb8d5bfceb2058e2b3291f4ae1e5a76e61
- https://git.kernel.org/stable/c/d354e523c6f740db758cafcd4c11bb7913285ed8
- https://git.kernel.org/stable/c/ef649703dce0df1364fcec3cdad9b32d1c522939
- https://git.kernel.org/stable/c/0021eb09041f021c079be1022934a280f7f176c0
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Sources
- CVE-2026-80605 · CVE Program
- CVE-2026-80605 · NVD
- FIRST EPSS
- GHSA-g689-gjw8-39fq · GitHub Advisory Database · CC BY 4.0
- CVE-2026-80605 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences