Unknown

CVE-2026-80768 — HID: ft260: fix stack-use-after-return write in I2C read race

In the Linux kernel, the following vulnerability has been resolved: HID: ft260: fix stack-use-after-return write in I2C read race ft260_i2c_read() points dev->read_buf at a caller-supplied buffer (often an on-stack variable), arms a completion and waits up to five seconds for the device to return the data. The HID input callback ft260_raw_event() runs in the input/IRQ path, independent of the dev->lock mutex held by the read path, and copies the device-supplied payload into dev->read_buf after a plain NULL check. These two paths share read_buf, read_idx and read_len with no serialization. If the device delays its response until the read times out, ft260_i2c_read() resets the controller, clears read_buf and returns, unwinding the stack frame the buffer lived in. A response that arrives at that moment lets ft260_raw_event() pass the NULL check and then memcpy() the device-controlled payload into the now-freed stack location, a bounded but attacker-influenced stack-use-after-return write triggerable by malicious or malfunctioning hardware. Add a dedicated spinlock that serializes every access to read_buf, read_idx and read_len. ft260_raw_event() now holds it across the NULL check, the memcpy and the index update, while the read path takes it when arming and when clearing the buffer, so the teardown can no longer slip between the check and the copy.

Published Sep 4, 2026 · Updated Oct 19, 2026 · Sources: NIST National Vulnerability Database, CVE Program (cve.org) e CISA ADP, GitHub Security Advisories · CNA: Linux

Low

Who exploits it and how urgent it is

A 0–100 score combining confirmed exploitation, ransomware and APT use, public exploits, EPSS and severity.

No exploitation signal in the sources consulted so far.

How the score was calculated

EPSS 0.2% (30-day exploitation probability)+1

The score orders the patch queue; it does not replace your asset context (internet exposure, criticality, compensating controls).

Triage

Is it exploited, how likely is exploitation, what does it touch, and how severe do the sources call it.

Exploitation

Not confirmed

Not in CISA KEV — an absence of record, not proof it is unexploited.

EPSS FIRST

0.18%

ahead of 7% of scored CVEs · Oct 27, 2026

Affects

Linux

CVSS base

—

Score not published yet.

Remediation

Fixes and mitigations documented by the sources — linked to the original advisory.

No fix documented by the sources we poll. That does not mean none exists: check the vendor advisory.

First 24 hours

Ordered from the record’s own fields — exposure first, because you cannot patch what you have not found. A rule-generated starting point.

Identify exposed assets running the affected vendor/product/version combinations (Linux Linux).
No fix documented in the sources: reduce exposure and monitor the vendor advisory.
Search available logs for exploit probes, errors and authentication anomalies.

Affected scope

Vendor, product and versions as the sources word them.

Vendor	Product	Versions	Status	Source
Linux	Linux	≥ 6a82582d9fa438045191074856f47165334f2777 and < 2b907001e8a83cdb71e899fd3d77ab51e2c03f10≥ 6a82582d9fa438045191074856f47165334f2777 and < 90e9298f2e4336a0e1ca7eeb173403df78056164≥ 6a82582d9fa438045191074856f47165334f2777 and < 460514d46e8892189fc933a1b4433811cfa5c309≥ 6a82582d9fa438045191074856f47165334f2777 and < 5aa5a1b7cc4b4bec5497ad9ef113fdfe37b232f3≥ 6a82582d9fa438045191074856f47165334f2777 and < a8e1f970f9040294cfd9100c681c32af6c2aeec0≥ 6a82582d9fa438045191074856f47165334f2777 and < d7ffbdc076675c84128d5b904e4d5167fe9f3a7f≥ 6a82582d9fa438045191074856f47165334f2777 and < 77832d8f1c81d9f84b6b54807fb278586001d754≥ 6a82582d9fa438045191074856f47165334f2777 and < bf3e39df3a397fd82967a31d17c4e02c7feab221 and 1 more version 5.13	Vulnerable	CVE Program (cve.org) e CISA ADP

EPSS over time FIRST

Oct 15, 2026 → Oct 27, 2026 · 12 reading(s) · max 0.18%

Detection

Read off the CVSS vector and the weakness class. Starting points, not tested rules.

Not enough vector or weakness data: use the affected application’s logs as a starting point.

application logs

Timeline

What happened to this CVE, newest first.

2026
Record published
Oct 15, 2026
Affected products added · linux/linux
Oct 15, 2026 · CVE Program (cve.org) e CISA ADP
Source status changed · → Received
Oct 15, 2026 · NIST National Vulnerability Database
Record created in this database
Oct 15, 2026 · NIST National Vulnerability Database
CVE published
Sep 4, 2026 · Linux

Source activity

Repeated readings are counted rather than listed.

1× References added · Oct 19, 2026 – Oct 19, 2026
1× Official description updated · Oct 15, 2026 – Oct 15, 2026

References

10 on the record

git.kernel.org/stable/c/90e9298f2e4336a0e1ca7eeb173403df78056164
NIST National Vulnerability Database
git.kernel.org/stable/c/2b907001e8a83cdb71e899fd3d77ab51e2c03f10
NIST National Vulnerability Database
git.kernel.org/stable/c/bf3e39df3a397fd82967a31d17c4e02c7feab221
NIST National Vulnerability Database
git.kernel.org/stable/c/d7ffbdc076675c84128d5b904e4d5167fe9f3a7f
NIST National Vulnerability Database
nvd.nist.gov/vuln/detail/CVE-2026-80768
GitHub Security Advisories
git.kernel.org/stable/c/5aa5a1b7cc4b4bec5497ad9ef113fdfe37b232f3
NIST National Vulnerability Database
git.kernel.org/stable/c/460514d46e8892189fc933a1b4433811cfa5c309
NIST National Vulnerability Database
github.com/advisories/GHSA-qx67-hq8p-m9fm
GitHub Security Advisories
git.kernel.org/stable/c/77832d8f1c81d9f84b6b54807fb278586001d754
NIST National Vulnerability Database
git.kernel.org/stable/c/a8e1f970f9040294cfd9100c681c32af6c2aeec0
NIST National Vulnerability Database

Elsewhere on this site

Linux
every CVE for this vendor

Related CVEs (same products)

Unknown CVE-2026-99215 power: supply: core: prevent unregistering a power supply while a callback runs 10h
Unknown CVE-2026-99216 Drivers: hv: Don't reset VMBus connection state on error/exit paths 10h
Unknown CVE-2026-99213 vsock: treat TCP_CLOSING as once-established 10h
Unknown CVE-2026-99207 scsi: target: Disable interrupts while holding delayed_cmd_lock 10h
Unknown CVE-2026-99208 drm/xe/oa: Zero OA buffer at allocation 10h
Unknown CVE-2026-99209 drm/xe: skip eviction of a BO with no resource 10h

Not in any source we poll

Listed rather than left blank: an empty field and an unmeasured one look identical on screen, and only one is a reason to look elsewhere.

No CVSS score published by NVD, the CNA, CISA or GitHub so far.
No fixed version, patch or mitigation documented.
No CISA SSVC assessment.
No CWE classification.
No confirmed IOCs, IP addresses, domains, file hashes, or malware artifacts supplied.
No organization-specific asset inventory, compensating-control status, or patch deployment evidence supplied.
No exploit packet captures, log samples, or incident case IDs supplied.

Answered from this record

Text assembled only from the fields above — no additional claims.

What should defenders know first?

CVE-2026-80768 is "HID: ft260: fix stack-use-after-return write in I2C read race", rated Unknown. It affects Linux (Linux); versions are in the scope table. It is not in CISA KEV, which does not rule out exploitation. EPSS 0.18% estimates the probability of exploitation in 30 days; neither replaces your asset context. First verify whether exposed or business-critical assets run the affected versions, apply vendor fixes or mitigations, and preserve logs for review.

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