CVE-2026-72236
s390/perf_cpum_cf: Add missing array_index_nospec() to __hw_perf_event_init()
Description
In the Linux kernel, the following vulnerability has been resolved: s390/perf_cpum_cf: Add missing array_index_nospec() to __hw_perf_event_init() ev variable is userspace controlled via event->attr.config and used as an array index after bounds checking, but without speculation barriers. Add the missing array_index_nospec() call to prevent speculative execution.
INFO
Published Date :
Aug. 15, 2026, 6:21 a.m.
Last Modified :
Aug. 17, 2026, 6:18 a.m.
Remotely Exploit :
No
Source :
416baaa9-dc9f-4396-8d5f-8c081fb06d67
Solution
- Update the Linux kernel.
- Apply the patch for s390/perf_cpum_cf.
- Ensure array_index_nospec() is used.
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-2026-72236.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-72236 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-2026-72236
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-2026-72236 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-72236 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': '212188a596d17d519842ef2173150315735b54e1', 'lessThan': '27206bb57c47bdbe33bccc78fa7f7e2a719a06b9', 'versionType': 'git'}, {'status': 'affected', 'version': '212188a596d17d519842ef2173150315735b54e1', 'lessThan': 'a21f3615c88421df81060b6ff89220fd34094c4d', 'versionType': 'git'}, {'status': 'affected', 'version': '212188a596d17d519842ef2173150315735b54e1', 'lessThan': 'fa1ebae4206e6afc8caa642e9eb1bbe39a9a724f', 'versionType': 'git'}, {'status': 'affected', 'version': '212188a596d17d519842ef2173150315735b54e1', 'lessThan': 'f79dff8c721bbb1f3fc312ea55e0551c2cc28801', 'versionType': 'git'}, {'status': 'affected', 'version': '212188a596d17d519842ef2173150315735b54e1', 'lessThan': '49145bce539117db4b6e9e83c0e5ef528e361050', 'versionType': 'git'}], 'programFiles': ['arch/s390/kernel/perf_cpum_cf.c'], 'defaultStatus': 'unaffected'}, {'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '3.4'}, {'status': 'unaffected', 'version': '0', 'lessThan': '3.4', 'versionType': 'semver'}, {'status': 'unaffected', 'version': '6.6.145', 'versionType': 'semver', 'lessThanOrEqual': '6.6.*'}, {'status': 'unaffected', 'version': '6.12.97', 'versionType': 'semver', 'lessThanOrEqual': '6.12.*'}, {'status': 'unaffected', 'version': '6.18.40', 'versionType': 'semver', 'lessThanOrEqual': '6.18.*'}, {'status': 'unaffected', 'version': '7.1.5', 'versionType': 'semver', 'lessThanOrEqual': '7.1.*'}, {'status': 'unaffected', 'version': '7.2-rc4', 'versionType': 'original_commit_for_fix', 'lessThanOrEqual': '*'}], 'programFiles': ['arch/s390/kernel/perf_cpum_cf.c'], 'defaultStatus': 'affected'}] [{'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '212188a596d17d519842ef2173150315735b54e1', 'lessThan': '27206bb57c47bdbe33bccc78fa7f7e2a719a06b9', 'versionType': 'git'}, {'status': 'affected', 'version': '212188a596d17d519842ef2173150315735b54e1', 'lessThan': 'a21f3615c88421df81060b6ff89220fd34094c4d', 'versionType': 'git'}, {'status': 'affected', 'version': '212188a596d17d519842ef2173150315735b54e1', 'lessThan': 'fa1ebae4206e6afc8caa642e9eb1bbe39a9a724f', 'versionType': 'git'}, {'status': 'affected', 'version': '212188a596d17d519842ef2173150315735b54e1', 'lessThan': 'f79dff8c721bbb1f3fc312ea55e0551c2cc28801', 'versionType': 'git'}, {'status': 'affected', 'version': '212188a596d17d519842ef2173150315735b54e1', 'lessThan': '49145bce539117db4b6e9e83c0e5ef528e361050', 'versionType': 'git'}], 'programFiles': ['arch/s390/kernel/perf_cpum_cf.c'], 'defaultStatus': 'unaffected'}, {'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '3.4'}, {'status': 'unaffected', 'version': '0', 'lessThan': '3.4', 'versionType': 'semver'}, {'status': 'unaffected', 'version': '6.6.145', 'versionType': 'semver', 'lessThanOrEqual': '6.6.*'}, {'status': 'unaffected', 'version': '6.12.97', 'versionType': 'semver', 'lessThanOrEqual': '6.12.*'}, {'status': 'unaffected', 'version': '6.18.40', 'versionType': 'semver', 'lessThanOrEqual': '6.18.*'}, {'status': 'unaffected', 'version': '7.1.5', 'versionType': 'semver', 'lessThanOrEqual': '7.1.*'}, {'status': 'unaffected', 'version': '7.2', 'versionType': 'original_commit_for_fix', 'lessThanOrEqual': '*'}], 'programFiles': ['arch/s390/kernel/perf_cpum_cf.c'], 'defaultStatus': 'affected'}] -
New CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Aug. 15, 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': '212188a596d17d519842ef2173150315735b54e1', 'lessThan': '27206bb57c47bdbe33bccc78fa7f7e2a719a06b9', 'versionType': 'git'}, {'status': 'affected', 'version': '212188a596d17d519842ef2173150315735b54e1', 'lessThan': 'a21f3615c88421df81060b6ff89220fd34094c4d', 'versionType': 'git'}, {'status': 'affected', 'version': '212188a596d17d519842ef2173150315735b54e1', 'lessThan': 'fa1ebae4206e6afc8caa642e9eb1bbe39a9a724f', 'versionType': 'git'}, {'status': 'affected', 'version': '212188a596d17d519842ef2173150315735b54e1', 'lessThan': 'f79dff8c721bbb1f3fc312ea55e0551c2cc28801', 'versionType': 'git'}, {'status': 'affected', 'version': '212188a596d17d519842ef2173150315735b54e1', 'lessThan': '49145bce539117db4b6e9e83c0e5ef528e361050', 'versionType': 'git'}], 'programFiles': ['arch/s390/kernel/perf_cpum_cf.c'], 'defaultStatus': 'unaffected'}, {'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '3.4'}, {'status': 'unaffected', 'version': '0', 'lessThan': '3.4', 'versionType': 'semver'}, {'status': 'unaffected', 'version': '6.6.145', 'versionType': 'semver', 'lessThanOrEqual': '6.6.*'}, {'status': 'unaffected', 'version': '6.12.97', 'versionType': 'semver', 'lessThanOrEqual': '6.12.*'}, {'status': 'unaffected', 'version': '6.18.40', 'versionType': 'semver', 'lessThanOrEqual': '6.18.*'}, {'status': 'unaffected', 'version': '7.1.5', 'versionType': 'semver', 'lessThanOrEqual': '7.1.*'}, {'status': 'unaffected', 'version': '7.2-rc4', 'versionType': 'original_commit_for_fix', 'lessThanOrEqual': '*'}], 'programFiles': ['arch/s390/kernel/perf_cpum_cf.c'], 'defaultStatus': 'affected'}] Added Description In the Linux kernel, the following vulnerability has been resolved: s390/perf_cpum_cf: Add missing array_index_nospec() to __hw_perf_event_init() ev variable is userspace controlled via event->attr.config and used as an array index after bounds checking, but without speculation barriers. Add the missing array_index_nospec() call to prevent speculative execution. Added Reference https://git.kernel.org/stable/c/27206bb57c47bdbe33bccc78fa7f7e2a719a06b9 Added Reference https://git.kernel.org/stable/c/49145bce539117db4b6e9e83c0e5ef528e361050 Added Reference https://git.kernel.org/stable/c/a21f3615c88421df81060b6ff89220fd34094c4d Added Reference https://git.kernel.org/stable/c/f79dff8c721bbb1f3fc312ea55e0551c2cc28801 Added Reference https://git.kernel.org/stable/c/fa1ebae4206e6afc8caa642e9eb1bbe39a9a724f