CVE-2026-80570: Linux kernel · Input: synaptics-rmi4 – zero report size on F54 work error
Affects Linux kernelSource GCVE Database
Not known to be exploited · CVSS 7.8 High.
Data as of 26 Oct 2026, 13:47 UTC
- EPSS
- 0.1% chance of exploitation in 30 days – higher than 2% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HExploitation evidence
Disclosed: evidence found.
CVE published 26 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
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
A fix is available that merges error handling paths to ensure the report size is zeroed on failure, preventing stale payload sizes from causing buffer overflows. Users should apply the official Linux kernel updates that include this patch. Since this is a kernel vulnerability, updating to a patched kernel version is the recommended remediation.
Description
In the Linux kernel, the following vulnerability has been resolved: Input: synaptics-rmi4 - zero report size on F54 work error In rmi_f54_work(), if an error occurs during report request or command verification, the code jumped directly to the 'error' label, bypassing the 'abort' label where f54->report_size was normally zeroed out. This left f54->report_size containing its previous successful payload size. If a user then altered the V4L2 format to a smaller size, and a subsequent run failed, rmi_f54_buffer_queue() would copy the stale, larger payload size into the shrunken V4L2 buffer, causing a heap buffer overflow. Fix this by merging the 'abort' and 'error' labels into a single 'out' exit path, and ensuring that f54->report_size is always set to 0 on failure by checking for error and zeroing the local report_size first.
References
- nvd.nist.gov/vuln/detail/CVE-2026-80570 (opens in a new tab)
- git.kernel.org/stable/c/62079c17ec07d64362bec367ee7a525b0dbf6bf9 (opens in a new tab)
- git.kernel.org/stable/c/77749685e55da19b187df215b5da4080842ca5c7 (opens in a new tab)
- git.kernel.org/stable/c/79521ed3cc9ea48476666ccacf45ecd6954b29a4 (opens in a new tab)
- git.kernel.org/stable/c/88c8174d72900d77fbdf2f527d54b6ff2da876a8 (opens in a new tab)
- git.kernel.org/stable/c/b28593a05afdd812b590e1045b5bd862a5869225 (opens in a new tab)
- git.kernel.org/stable/c/c669c64ab71afa7b467c4d7e18f6a05e96b97a1f (opens in a new tab)
- git.kernel.org/stable/c/c6cfda79f26c69e97db9805808c3b44d02227b4b (opens in a new tab)
- git.kernel.org/stable/c/dc76c3c8e8ad09362b8c1561f3928288c15cba2e (opens in a new tab)
- ubuntu.com/security/CVE-2026-80570 (opens in a new tab)
- cve.org/CVERecord?id=CVE-2026-80570 (opens in a new tab)