CVE-2026-98201: linux

CVSS: UnknownReceived
AliasesUBUNTU-CVE-2026-98201DEBIAN-CVE-2026-98201
Published 06-10-2026Last modified 19-10-2026
Open JSON

Vulnerability summary

CVE-2026-98201 is a vulnerability in linux with no CVSS score yet. EPSS estimates a 0.18% chance of exploitation in the next 30 days, higher than 7.6% of scored vulnerabilities.

Overall risk
0/100
0100
Minimal · default modelHow is this calculated?
CVSS score
Not scored
010
No CVSS score recorded
EPSS score
0.18%
0%100%
Low · Change unavailable
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-2026:12131-1

Timeline

  1. 06-10-2026
    PublishedVulnerability first disclosed.
  2. 19-10-2026
    Last modifiedVulnerability information updated.

Description

In the Linux kernel, the following vulnerability has been resolved: Input: zero ff_effect before compat copy in input_ff_effect_from_user In the compat path input_ff_effect_from_user() aliases the caller's native struct ff_effect with the smaller struct ff_effect_compat and copies only the compat sized prefix: compat_effect = (struct ff_effect_compat *)effect; if (copy_from_user(compat_effect, buffer, sizeof(struct ff_effect_compat))) The tail of the native structure is never written. Callers pass an uninitialized on-stack object, for example evdev_do_ioctl() for EVIOCSFF, so those bytes keep their previous stack contents. input_ff_upload() then stores the full native structure in ff->effects[id], from where a uinput based force feedback daemon can read it back via UI_BEGIN_FF_UPLOAD, disclosing kernel stack memory to userspace. Zero the effect before the compat copy.

CVSS metrics

Risk metrics not yet published.

EPSS trend

Probability

0.18%

Chance of exploitation in the next 30 days

Percentile

8%

Versus all other CVEs

30-day change

Change unavailable

Change unavailable

06-10-202621-10-2026
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

Ubuntu169 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)
Debian1 product
  • linuxAll versions (No fix recorded) | < 6.1.190-1 | < 6.12.113-1 | < 7.2.8-1
Linux1 product
  • linux≥ 2d56f3a32c0e62f99c043d2579840f9731fe5855, < ed0905fda39682d3da7937184397d3276abbffa8 | ≥ 2d56f3a32c0e62f99c043d2579840f9731fe5855, < ec174c2ab1abb76b20fa167c6db848c3d97aa838 | ≥ 2d56f3a32c0e62f99c043d2579840f9731fe5855, < 6c26681c5668c973bd0e951407d670ac60d9cd66 | ≥ 2d56f3a32c0e62f99c043d2579840f9731fe5855, < c5e573bb095d502be7cbbaa99c26a20984111c6d | ≥ 2d56f3a32c0e62f99c043d2579840f9731fe5855, < b878720e8bcaa4cf7163a5081f904dd6baf11b2c | ≥ 2d56f3a32c0e62f99c043d2579840f9731fe5855, < 0d05b43b55d4784a42ce8fb318175f8ad7d9af5a | ≥ 2d56f3a32c0e62f99c043d2579840f9731fe5855, < ed0406e490f48ed180df140fe2a81be26bccb1a9 | ≥ 2d56f3a32c0e62f99c043d2579840f9731fe5855, < f84819ef8d66931ee3998fee3c4f03230f4cb6cc | 2.6.29

3 vendors · 171 products

References

12 links
Show all 12 references