7.5

CVE-2026-68141: linux NULL Pointer Dereference

CVSS: 7.5v3.1HighReceived
AliasesUBUNTU-CVE-2026-68141DEBIAN-CVE-2026-68141
Published 10-08-2026Last modified 19-10-2026
Open JSON

Vulnerability summary

CVE-2026-68141 is a high (CVSS 7.5) NULL Pointer Dereference vulnerability in linux. EPSS estimates a 0.52% chance of exploitation in the next 30 days, higher than 43.2% of scored vulnerabilities.

Overall risk
30/100
0100
Medium · default modelHow is this calculated?
CVSS score
7.5/10
010
High · v3.1 (CVE.org)
EPSS score
0.52%
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 25 · Related 23
MGASA-2026-0336MGASA-2026-0337OPENSUSE-SU-2026:21910-1SUSE-SU-2026:23881-1SUSE-SU-2026:23887-1SUSE-SU-2026:23897-1

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: net/af_iucv: fix NULL deref in afiucv_hs_callback_syn() afiucv_hs_callback_syn() allocates the child socket with GFP_ATOMIC. If the allocation fails, nsk is NULL. The connection-refused path is entered when the listen state check fails, the accept backlog is full, or nsk is NULL. The code unconditionally calls iucv_sock_kill(nsk) in that path. iucv_sock_kill() does not accept a NULL socket pointer and immediately dereferences sk via sock_flag(sk, SOCK_ZAPPED). When nsk is NULL, calling iucv_sock_kill(nsk) results in a NULL pointer dereference. Only call iucv_sock_kill() when a child socket was successfully allocated.

CVSS metrics

4 scores · 4 sources · 1 version

EPSS trend

Probability

0.52%

Chance of exploitation in the next 30 days

Percentile

43%

Versus all other CVEs

30-day change

0.00 pp

From 0.52% on 19-09-2026

19-09-202619-10-2026
EPSS score
0.52%

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

Ubuntu169 products
  • linuxAll versions (No fix recorded) | < 5.15.0-198.208 | < 6.8.0-147.147 | < 7.0.0-38.38
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-awsAll versions (No fix recorded) | < 5.15.0-1117.124 | < 6.8.0-1067.70 | < 7.0.0-1014.14
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
Debian2 products
  • linux< 6.1.187-1 | < 6.12.101-1 | < 7.1.6-1
  • linux-6.12< 6.12.101-1~deb12u1
Linux1 product
  • linux≥ 3881ac441f642d56503818123446f7298442236b, < 6a1eb5b46c19073f8153b7e2c19b408cf353aaf1 | ≥ 3881ac441f642d56503818123446f7298442236b, < c0b6e2ae90613c2fea7eaf3faa20985c6c2a1953 | ≥ 3881ac441f642d56503818123446f7298442236b, < 07e21deb3664001995e0a456dd627ab7dbe127ec | ≥ 3881ac441f642d56503818123446f7298442236b, < 8bb111f87ded6acb9837ec9b45d6f02cda94c51f | ≥ 3881ac441f642d56503818123446f7298442236b, < 46453b16f38ec7147351f7447e2aec6ea330f7b3 | ≥ 3881ac441f642d56503818123446f7298442236b, < 33736ff5e7c97d3348ce812e8bd2e125d840743c | ≥ 3881ac441f642d56503818123446f7298442236b, < 0e857185591fe79934427c9c0c1c31dc776be134 | ≥ 3881ac441f642d56503818123446f7298442236b, < 47a5116e56a6b6fe1e909f244e39cd0fc26ceee4 | 3.2

3 vendors · 172 products

References

27 links
Show all 27 references