CVE-2026-68157
libceph: guard missing CRUSH type name lookup
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 ]
INFO
Published Date :
Aug. 10, 2026, 1:20 p.m.
Last Modified :
Aug. 17, 2026, 5:18 a.m.
Remotely Exploit :
Yes !
Source :
416baaa9-dc9f-4396-8d5f-8c081fb06d67
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | HIGH | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 |
Solution
- Update the Linux kernel to the resolved version.
- Ensure CRUSH map data is validated before processing.
- Apply patches that fix the null-ptr-deref in locality lookup.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-68157.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-68157 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-68157
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-68157 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-68157 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
CVE Modified by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Aug. 17, 2026
Action Type Old Value New Value Changed Affected [{'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '117d96a04f007ce8fc2e292369056c3bd09f6f63', 'lessThan': 'c46d82c47afc968d6ee8ef4470fa2dd35b765c21', 'versionType': 'git'}, {'status': 'affected', 'version': '117d96a04f007ce8fc2e292369056c3bd09f6f63', 'lessThan': '3767c9f0c1bbd98dd25cb088356a0fc6c1f09f50', 'versionType': 'git'}, {'status': 'affected', 'version': '117d96a04f007ce8fc2e292369056c3bd09f6f63', 'lessThan': '4716a64b7cc2797741f7be4e283ace78a9dff37d', 'versionType': 'git'}, {'status': 'affected', 'version': '117d96a04f007ce8fc2e292369056c3bd09f6f63', 'lessThan': 'db9cc9fd9660b2d69ee66f5a4cbec83c21a1c64d', 'versionType': 'git'}, {'status': 'affected', 'version': '117d96a04f007ce8fc2e292369056c3bd09f6f63', 'lessThan': 'bbeae12fda3384a90fbebc8a19ba9d33f85b5361', 'versionType': 'git'}], 'programFiles': ['net/ceph/osdmap.c'], 'defaultStatus': 'unaffected'}, {'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '5.8'}, {'status': 'unaffected', 'version': '0', 'lessThan': '5.8', 'versionType': 'semver'}, {'status': 'unaffected', 'version': '6.6.148', 'versionType': 'semver', 'lessThanOrEqual': '6.6.*'}, {'status': 'unaffected', 'version': '6.12.101', 'versionType': 'semver', 'lessThanOrEqual': '6.12.*'}, {'status': 'unaffected', 'version': '6.18.42', 'versionType': 'semver', 'lessThanOrEqual': '6.18.*'}, {'status': 'unaffected', 'version': '7.1.6', 'versionType': 'semver', 'lessThanOrEqual': '7.1.*'}, {'status': 'unaffected', 'version': '7.2-rc5', 'versionType': 'original_commit_for_fix', 'lessThanOrEqual': '*'}], 'programFiles': ['net/ceph/osdmap.c'], 'defaultStatus': 'affected'}] [{'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '117d96a04f007ce8fc2e292369056c3bd09f6f63', 'lessThan': 'c46d82c47afc968d6ee8ef4470fa2dd35b765c21', 'versionType': 'git'}, {'status': 'affected', 'version': '117d96a04f007ce8fc2e292369056c3bd09f6f63', 'lessThan': '3767c9f0c1bbd98dd25cb088356a0fc6c1f09f50', 'versionType': 'git'}, {'status': 'affected', 'version': '117d96a04f007ce8fc2e292369056c3bd09f6f63', 'lessThan': '4716a64b7cc2797741f7be4e283ace78a9dff37d', 'versionType': 'git'}, {'status': 'affected', 'version': '117d96a04f007ce8fc2e292369056c3bd09f6f63', 'lessThan': 'db9cc9fd9660b2d69ee66f5a4cbec83c21a1c64d', 'versionType': 'git'}, {'status': 'affected', 'version': '117d96a04f007ce8fc2e292369056c3bd09f6f63', 'lessThan': 'bbeae12fda3384a90fbebc8a19ba9d33f85b5361', 'versionType': 'git'}], 'programFiles': ['net/ceph/osdmap.c'], 'defaultStatus': 'unaffected'}, {'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '5.8'}, {'status': 'unaffected', 'version': '0', 'lessThan': '5.8', 'versionType': 'semver'}, {'status': 'unaffected', 'version': '6.6.148', 'versionType': 'semver', 'lessThanOrEqual': '6.6.*'}, {'status': 'unaffected', 'version': '6.12.101', 'versionType': 'semver', 'lessThanOrEqual': '6.12.*'}, {'status': 'unaffected', 'version': '6.18.42', 'versionType': 'semver', 'lessThanOrEqual': '6.18.*'}, {'status': 'unaffected', 'version': '7.1.6', 'versionType': 'semver', 'lessThanOrEqual': '7.1.*'}, {'status': 'unaffected', 'version': '7.2', 'versionType': 'original_commit_for_fix', 'lessThanOrEqual': '*'}], 'programFiles': ['net/ceph/osdmap.c'], 'defaultStatus': 'affected'}] -
CVE Modified by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Aug. 13, 2026
Action Type Old Value New Value Added CVSS V3.1 AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H -
New CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Aug. 10, 2026
Action Type Old Value New Value Added Affected [{'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '117d96a04f007ce8fc2e292369056c3bd09f6f63', 'lessThan': 'c46d82c47afc968d6ee8ef4470fa2dd35b765c21', 'versionType': 'git'}, {'status': 'affected', 'version': '117d96a04f007ce8fc2e292369056c3bd09f6f63', 'lessThan': '3767c9f0c1bbd98dd25cb088356a0fc6c1f09f50', 'versionType': 'git'}, {'status': 'affected', 'version': '117d96a04f007ce8fc2e292369056c3bd09f6f63', 'lessThan': '4716a64b7cc2797741f7be4e283ace78a9dff37d', 'versionType': 'git'}, {'status': 'affected', 'version': '117d96a04f007ce8fc2e292369056c3bd09f6f63', 'lessThan': 'db9cc9fd9660b2d69ee66f5a4cbec83c21a1c64d', 'versionType': 'git'}, {'status': 'affected', 'version': '117d96a04f007ce8fc2e292369056c3bd09f6f63', 'lessThan': 'bbeae12fda3384a90fbebc8a19ba9d33f85b5361', 'versionType': 'git'}], 'programFiles': ['net/ceph/osdmap.c'], 'defaultStatus': 'unaffected'}, {'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '5.8'}, {'status': 'unaffected', 'version': '0', 'lessThan': '5.8', 'versionType': 'semver'}, {'status': 'unaffected', 'version': '6.6.148', 'versionType': 'semver', 'lessThanOrEqual': '6.6.*'}, {'status': 'unaffected', 'version': '6.12.101', 'versionType': 'semver', 'lessThanOrEqual': '6.12.*'}, {'status': 'unaffected', 'version': '6.18.42', 'versionType': 'semver', 'lessThanOrEqual': '6.18.*'}, {'status': 'unaffected', 'version': '7.1.6', 'versionType': 'semver', 'lessThanOrEqual': '7.1.*'}, {'status': 'unaffected', 'version': '7.2-rc5', 'versionType': 'original_commit_for_fix', 'lessThanOrEqual': '*'}], 'programFiles': ['net/ceph/osdmap.c'], 'defaultStatus': 'affected'}] Added 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 ] Added Reference https://git.kernel.org/stable/c/3767c9f0c1bbd98dd25cb088356a0fc6c1f09f50 Added Reference https://git.kernel.org/stable/c/4716a64b7cc2797741f7be4e283ace78a9dff37d Added Reference https://git.kernel.org/stable/c/bbeae12fda3384a90fbebc8a19ba9d33f85b5361 Added Reference https://git.kernel.org/stable/c/c46d82c47afc968d6ee8ef4470fa2dd35b765c21 Added Reference https://git.kernel.org/stable/c/db9cc9fd9660b2d69ee66f5a4cbec83c21a1c64d