9.8

CVE-2026-68385: linux NULL Pointer Dereference

CVSS: 9.8v3.1CriticalReceived
AliasesUBUNTU-CVE-2026-68385DEBIAN-CVE-2026-68385
Published 10-08-2026Last modified 19-10-2026
Open JSON

Vulnerability summary

CVE-2026-68385 is a critical (CVSS 9.8) NULL Pointer Dereference vulnerability in linux. EPSS estimates a 0.49% chance of exploitation in the next 30 days, higher than 41.1% of scored vulnerabilities.

Overall risk
70/100
0100
High · default modelHow is this calculated?
CVSS score
9.8/10
010
Critical · v3.1 (CVE.org)
EPSS score
0.49%
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 13 · Related 11
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. 19-10-2026
    Last modifiedVulnerability information updated.

Description

In the Linux kernel, the following vulnerability has been resolved: s390/checksum: Fix csum_partial() without vector facility Currently csum_partial() calls csum_copy() with copy=false and dst=NULL. On machines without the vector facility, csum_copy() falls back to cksm(dst, ...), causing the checksum to be calculated from address zero instead of the source buffer. The VX implementation already checksums data loaded from src. Make the fallback do the same by passing src to cksm().

CVSS metrics

4 scores · 4 sources · 1 version

EPSS trend

Probability

0.49%

Chance of exploitation in the next 30 days

Percentile

41%

Versus all other CVEs

30-day change

0.00 pp

From 0.49% on 21-09-2026

21-09-202621-10-2026
EPSS score
0.49%

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

Affected systems

Ubuntu120 products
  • linux< 7.0.0-38.38
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-aws< 7.0.0-1014.14
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
Debian2 products
  • linux< 6.12.101-1 | < 7.1.6-1
  • linux-6.12< 6.12.101-1~deb12u1
Linux1 product
  • linux≥ dcd3e1de9d17dc43dfed87a9fc814b9dec508043, < 5fc0a2a6eeb99cac991242bb48796c7749ce3261 | ≥ dcd3e1de9d17dc43dfed87a9fc814b9dec508043, < 1d9a2f01b3c4e5c88e06b2db4b5460c2ec884722 | ≥ dcd3e1de9d17dc43dfed87a9fc814b9dec508043, < 898bb2814f38399108bdd2113f38d97383a7036a | ≥ dcd3e1de9d17dc43dfed87a9fc814b9dec508043, < 4bb06b60d982355e22647b3d12d6619419f8c1fa | 6.9

3 vendors · 123 products

References

13 links
Show all 13 references