8.4

CVE-2026-81017: linux

CVSS: 8.4v3.1HighReceived
AliasesUBUNTU-CVE-2026-81017DEBIAN-CVE-2026-81017
Published 11-09-2026Last modified 19-10-2026
Open JSON

Vulnerability summary

CVE-2026-81017 is a high (CVSS 8.4) vulnerability in linux. EPSS estimates a 0.18% chance of exploitation in the next 30 days, higher than 7.6% of scored vulnerabilities.

Overall risk
34/100
0100
Medium · default modelHow is this calculated?
CVSS score
8.4/10
010
High · v3.1 (CVE.org)
EPSS score
0.18%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 1 · Related 1
OPENSUSE-SU-2026:11805-1

Timeline

  1. 11-09-2026
    PublishedVulnerability first disclosed.
  2. 19-10-2026
    Last modifiedVulnerability information updated.

Description

In the Linux kernel, the following vulnerability has been resolved: platform/chrome: sensorhub: Bound the EC-reported sensor number Each EC FIFO event carries an 8-bit sensor number (in->sensor_num). cros_ec_sensorhub_ring_handler() validates the FIFO event count, the per-read count and the ring bound, but not the sensor number, which cros_ec_sensor_ring_process_event() then uses unchecked to index sensorhub->batch_state[] - allocated with only sensorhub->sensor_num entries. A sensor number of sensor_num or larger is an out-of-bounds read and write of batch_state[]. Validate the sensor number in the ring handler, where each event is read from the EC, and drop a malformed event before it is used.

CVSS metrics

4 scores · 4 sources · 1 version

EPSS trend

Probability

0.18%

Chance of exploitation in the next 30 days

Percentile

8%

Versus all other CVEs

30-day change

0.00 pp

From 0.18% on 21-09-2026

21-09-202621-10-2026
EPSS score
0.18%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

No weakness data has been published for this record.

Affected systems

Ubuntu157 products
  • linuxAll versions (No fix recorded)
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-awsAll versions (No fix recorded)
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
Debian2 products
  • linuxAll versions (No fix recorded) | < 6.1.190-1 | < 6.12.111-1 | < 7.2.6-1
  • linux-6.12< 6.12.111-1~deb12u1
Linux1 product
  • linux≥ 145d59baff5944b71551ac518d7fd7d377a9c820, < 3a76b87e1d065183e2e7ae5b800cb1f6e84f543d | ≥ 145d59baff5944b71551ac518d7fd7d377a9c820, < 2b602ecf6193ecb9720c78b6728d7e09370b1ff1 | ≥ 145d59baff5944b71551ac518d7fd7d377a9c820, < 324880f94ba3c6269a607e04f78a4dd4a66b3f53 | ≥ 145d59baff5944b71551ac518d7fd7d377a9c820, < d1b4add68dabfdd6481a4fa198bf3b473d2634d7 | ≥ 145d59baff5944b71551ac518d7fd7d377a9c820, < 3d2636dce0a8fe9eecad29010699847be425dc80 | ≥ 145d59baff5944b71551ac518d7fd7d377a9c820, < 5eaf7faa99578ae090030d1e2e6ea3b37a615496 | ≥ 145d59baff5944b71551ac518d7fd7d377a9c820, < 4d9bf63ed74f859c6698bc01d8fb216ef9253867 | ≥ 145d59baff5944b71551ac518d7fd7d377a9c820, < 833740a2333c2e4db4e02e3d0ffba04e8718a5f3 | 5.7

3 vendors · 160 products

References

12 links
Show all 12 references