7.5

CVE-2026-68157: linux NULL Pointer Dereference

CVSS: 7.5v3.1HighReceived
AliasesUBUNTU-CVE-2026-68157DEBIAN-CVE-2026-68157
Published 10-08-2026Last modified 19-10-2026
Open JSON

Vulnerability summary

CVE-2026-68157 is a high (CVSS 7.5) NULL Pointer Dereference vulnerability in linux. EPSS estimates a 0.70% chance of exploitation in the next 30 days, higher than 52.1% 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
0.70%
0%100%
Low · +0.01 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 29 · Related 26
MGASA-2026-0336MGASA-2026-0337OPENSUSE-SU-2026:21910-1RHSA-2026:70459SUSE-SU-2026:23477-1SUSE-SU-2026:23481-1

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: libceph: guard missing CRUSH type name lookup Localized read selection can walk a parent bucket whose name exists in the CRUSH map while its type has no matching entry in type_names. get_immediate_parent() then dereferences a NULL type_cn and passes an invalid pointer into strcmp(), causing a null-ptr-deref. Skip such malformed parent buckets unless both the bucket name and type name metadata are present. This keeps malformed hierarchy data from crashing locality lookup and safely falls back to "not local". [ idryomov: add WARN_ON_ONCE ]

CVSS metrics

4 scores · 4 sources · 1 version

EPSS trend

Probability

0.70%

Chance of exploitation in the next 30 days

Percentile

52%

Versus all other CVEs

30-day change

+0.01 pp

From 0.69% on 20-09-2026

20-09-202620-10-2026
EPSS score
0.70%

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

Ubuntu157 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≥ 117d96a04f007ce8fc2e292369056c3bd09f6f63, < cbfcba275326c8c7dae9acd8f4a0d4c316fdafb0 | ≥ 117d96a04f007ce8fc2e292369056c3bd09f6f63, < 8ff579ac03d6e9d17d6d9c8443110167c14a382d | ≥ 117d96a04f007ce8fc2e292369056c3bd09f6f63, < 6a4b75d90f0cfbf22c14742ab35a803bc13f36ec | ≥ 117d96a04f007ce8fc2e292369056c3bd09f6f63, < c46d82c47afc968d6ee8ef4470fa2dd35b765c21 | ≥ 117d96a04f007ce8fc2e292369056c3bd09f6f63, < 3767c9f0c1bbd98dd25cb088356a0fc6c1f09f50 | ≥ 117d96a04f007ce8fc2e292369056c3bd09f6f63, < 4716a64b7cc2797741f7be4e283ace78a9dff37d | ≥ 117d96a04f007ce8fc2e292369056c3bd09f6f63, < db9cc9fd9660b2d69ee66f5a4cbec83c21a1c64d | ≥ 117d96a04f007ce8fc2e292369056c3bd09f6f63, < bbeae12fda3384a90fbebc8a19ba9d33f85b5361 | 5.8

3 vendors · 160 products

References

27 links
Show all 27 references