7.8

CVE-2026-68400: linux

CVSS: 7.8v3.1HighReceived
AliasesUBUNTU-CVE-2026-68400DEBIAN-CVE-2026-68400
Published 10-08-2026Last modified 21-10-2026
Open JSON

Vulnerability summary

CVE-2026-68400 is a high (CVSS 7.8) vulnerability in linux. EPSS estimates a 0.13% chance of exploitation in the next 30 days, higher than 2.1% of scored vulnerabilities.

Overall risk
31/100
0100
Medium · default modelHow is this calculated?
CVSS score
7.8/10
010
High · v3.1 (CVE.org)
EPSS score
0.13%
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 14 · Related 12
MGASA-2026-0336MGASA-2026-0337OPENSUSE-SU-2026:22091-1SUSE-SU-2026:24179-1SUSE-SU-2026:24184-1SUSE-SU-2026:24197-1

Timeline

  1. 10-08-2026
    PublishedVulnerability first disclosed.
  2. 21-10-2026
    Last modifiedVulnerability information updated.

Description

In the Linux kernel, the following vulnerability has been resolved: firmware: arm_ffa: Fix Endpoint Memory Access Descriptor offset calculation Use the descriptor's `ep_mem_offset` to calculate the start of the endpoint memory access array and to comply with the FF-A spec instead of defaulting to `sizeof(struct ffa_mem_region)`. This requires moving `ffa_mem_region_additional_setup()` earlier in the setup flow. Also, add sanity checks to ensure the calculated descriptor offsets do not exceed `max_fragsize`.

CVSS metrics

4 scores · 4 sources · 1 version

EPSS trend

Probability

0.13%

Chance of exploitation in the next 30 days

Percentile

2%

Versus all other CVEs

30-day change

0.00 pp

From 0.13% on 21-09-2026

21-09-202621-10-2026
EPSS score
0.13%

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

Ubuntu142 products
  • linuxAll versions (No fix recorded) | < 7.0.0-38.38
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-awsAll versions (No fix recorded) | < 7.0.0-1014.14
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
Debian1 product
  • linuxAll versions (No fix recorded) | < 7.1.6-1
Linux1 product
  • linux≥ 113580530ee7dc61e668b641d657920734533b9f, < 6e902bea625b710f8bf2f40b4ae4b14fa6a33f13 | ≥ 113580530ee7dc61e668b641d657920734533b9f, < b39b08e6bee812514b449dc874076890e6b871a0 | ≥ 113580530ee7dc61e668b641d657920734533b9f, < 8ef18f0ab3c0ec1eac77289f5a542bd96a8a6d66 | ≥ 113580530ee7dc61e668b641d657920734533b9f, < b4d961351aa84fdf0148783fb1f3a1391b8a0adb | 6.7

3 vendors · 144 products

References

14 links
Show all 14 references