CVE-2026-80605: Linux kernel · HID: picolcd: prevent NULL pointer dereference in picolcd_send_and_wait()
Affects Linux kernelSource GCVE Database
Not known to be exploited · fixed in 5.15.0-1117.124~20.04.1 : update Linux kernel when convenient.
Data as of 26 Oct 2026, 12:55 UTC
Rated by Threat Radar · CVSS not yet scored by NVD
- EPSS
- 0.2% chance of exploitation in 30 days – higher than 12% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
- Patch
- Available – fixed in 5.15.0-1117.124~20.04.1, 5.15.0-1123.132~20.04.1, 5.15.0-1122.131~20.04.1 +40
Exploitation evidence
Disclosed: evidence found.
CVE published 28 Aug 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 26 Oct 2026.
What to do
Upgrade to a fixed release listed under Affected software.
Affected software
| Product | Affected | Fixed in |
|---|---|---|
Ubuntu 26.04 LTSlinuxpkg:deb/ubuntu/linux?arch=source&distro=resoluteOther threats | Affected
| Fixed in
|
Ubuntu 26.04 LTSlinux-awspkg:deb/ubuntu/linux-aws?arch=source&distro=resoluteOther threats | Affected
| Fixed in
|
Ubuntu 26.04 LTSlinux-azurepkg:deb/ubuntu/linux-azure?arch=source&distro=resoluteOther threats | Affected
| Fixed in
|
Ubuntu 26.04 LTSlinux-azure-fdepkg:deb/ubuntu/linux-azure-fde?arch=source&distro=resoluteOther threats | Affected
| Fixed in
|
Ubuntu 26.04 LTSlinux-gcppkg:deb/ubuntu/linux-gcp?arch=source&distro=resoluteOther threats | Affected
| Fixed in
|
Ubuntu 26.04 LTSlinux-gkepkg:deb/ubuntu/linux-gke?arch=source&distro=resoluteOther threats | Affected
| Fixed in
|
Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.
AI-suggested
An official fix is available and should be applied. The vulnerability has been resolved by changing the loop counter type in the picolcd driver to prevent integer overflow and NULL pointer dereference. Users should update to a patched Linux kernel version as provided by their distribution or vendor.
Description
A vulnerability in the Linux kernel's HID picolcd driver could cause a NULL pointer dereference due to an integer overflow in the loop counter within the picolcd_send_and_wait() function. This flaw occurs if the loop counter 'k' exceeds INT_MAX, causing it to become negative and potentially leading to out-of-bounds memory access. The issue has been fixed by changing the loop counter type to unsigned int to prevent overflow and eliminate the NULL pointer dereference.
References
- nvd.nist.gov/vuln/detail/CVE-2026-80605 (opens in a new tab)
- git.kernel.org/stable/c/0021eb09041f021c079be1022934a280f7f176c0 (opens in a new tab)
- git.kernel.org/stable/c/42dc0b7b55fe0499fc09183f34a1c46d1dcccf77 (opens in a new tab)
- git.kernel.org/stable/c/48caee2c106b03301c72fe389ebff00d852c58d5 (opens in a new tab)
- git.kernel.org/stable/c/a02d5d7ad7ae5fa3756b8332f7350e973085dcb3 (opens in a new tab)
- git.kernel.org/stable/c/d354e523c6f740db758cafcd4c11bb7913285ed8 (opens in a new tab)
- git.kernel.org/stable/c/dc176447c7279435c46735db7da81aed1ec25cc2 (opens in a new tab)
- git.kernel.org/stable/c/e4edeefb8d5bfceb2058e2b3291f4ae1e5a76e61 (opens in a new tab)
- git.kernel.org/stable/c/ef649703dce0df1364fcec3cdad9b32d1c522939 (opens in a new tab)
- ubuntu.com/security/CVE-2026-80605 (opens in a new tab)
- cve.org/CVERecord?id=CVE-2026-80605 (opens in a new tab)
- git.kernel.org/linus/0021eb09041f021c079be1022934a280f7f176c0 (opens in a new tab)
- ubuntu.com/security/notices/USN-8878-1 (opens in a new tab)
- ubuntu.com/security/notices/USN-8879-1 (opens in a new tab)
- ubuntu.com/security/notices/USN-8877-1 (opens in a new tab)
- ubuntu.com/security/notices/USN-8875-1 (opens in a new tab)
- ubuntu.com/security/notices/USN-8888-1 (opens in a new tab)
- ubuntu.com/security/notices/USN-8889-1 (opens in a new tab)
- ubuntu.com/security/notices/USN-8887-1 (opens in a new tab)
- ubuntu.com/security/notices/USN-8888-2 (opens in a new tab)
- ubuntu.com/security/notices/USN-8887-2 (opens in a new tab)