CVE-2026-74258
bpf: Guard __get_user acesss with access_ok for uprobe_multi data
Description
In the Linux kernel, the following vulnerability has been resolved: bpf: Guard __get_user acesss with access_ok for uprobe_multi data As reported by sashiko [1] we need to use access_ok to check the user space data bounds before we use __get-user to get it. [1] https://lore.kernel.org/bpf/[email protected]/
INFO
Published Date :
Aug. 15, 2026, 6:22 a.m.
Last Modified :
Aug. 17, 2026, 6:19 a.m.
Remotely Exploit :
No
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 latest secure version.
- Verify user space data access checks are enforced.
- Recompile kernel with appropriate security settings.
- Apply provided patches for the bpf module.
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-2026-74258.
| URL | Resource |
|---|---|
| https://git.kernel.org/stable/c/4d87a251d45b4a95eb4c0abcfab809c9f231258a | |
| https://git.kernel.org/stable/c/c6d51ad36490013ee9df94a372d3bf794bd304d1 |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-74258 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-2026-74258
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-2026-74258 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-74258 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 Added CVSS V3.1 AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H Changed Affected [{'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '89ae89f53d201143560f1e9ed4bfa62eee34f88e', 'lessThan': 'c6d51ad36490013ee9df94a372d3bf794bd304d1', 'versionType': 'git'}, {'status': 'affected', 'version': '89ae89f53d201143560f1e9ed4bfa62eee34f88e', 'lessThan': '4d87a251d45b4a95eb4c0abcfab809c9f231258a', 'versionType': 'git'}], 'programFiles': ['kernel/trace/bpf_trace.c'], 'defaultStatus': 'unaffected'}, {'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '6.6'}, {'status': 'unaffected', 'version': '0', 'lessThan': '6.6', 'versionType': 'semver'}, {'status': 'unaffected', 'version': '7.1.5', 'versionType': 'semver', 'lessThanOrEqual': '7.1.*'}, {'status': 'unaffected', 'version': '7.2-rc1', 'versionType': 'original_commit_for_fix', 'lessThanOrEqual': '*'}], 'programFiles': ['kernel/trace/bpf_trace.c'], 'defaultStatus': 'affected'}] [{'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '89ae89f53d201143560f1e9ed4bfa62eee34f88e', 'lessThan': 'c6d51ad36490013ee9df94a372d3bf794bd304d1', 'versionType': 'git'}, {'status': 'affected', 'version': '89ae89f53d201143560f1e9ed4bfa62eee34f88e', 'lessThan': '4d87a251d45b4a95eb4c0abcfab809c9f231258a', 'versionType': 'git'}], 'programFiles': ['kernel/trace/bpf_trace.c'], 'defaultStatus': 'unaffected'}, {'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '6.6'}, {'status': 'unaffected', 'version': '0', 'lessThan': '6.6', 'versionType': 'semver'}, {'status': 'unaffected', 'version': '7.1.5', 'versionType': 'semver', 'lessThanOrEqual': '7.1.*'}, {'status': 'unaffected', 'version': '7.2', 'versionType': 'original_commit_for_fix', 'lessThanOrEqual': '*'}], 'programFiles': ['kernel/trace/bpf_trace.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': '89ae89f53d201143560f1e9ed4bfa62eee34f88e', 'lessThan': 'c6d51ad36490013ee9df94a372d3bf794bd304d1', 'versionType': 'git'}, {'status': 'affected', 'version': '89ae89f53d201143560f1e9ed4bfa62eee34f88e', 'lessThan': '4d87a251d45b4a95eb4c0abcfab809c9f231258a', 'versionType': 'git'}], 'programFiles': ['kernel/trace/bpf_trace.c'], 'defaultStatus': 'unaffected'}, {'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '6.6'}, {'status': 'unaffected', 'version': '0', 'lessThan': '6.6', 'versionType': 'semver'}, {'status': 'unaffected', 'version': '7.1.5', 'versionType': 'semver', 'lessThanOrEqual': '7.1.*'}, {'status': 'unaffected', 'version': '7.2-rc1', 'versionType': 'original_commit_for_fix', 'lessThanOrEqual': '*'}], 'programFiles': ['kernel/trace/bpf_trace.c'], 'defaultStatus': 'affected'}] Added Description In the Linux kernel, the following vulnerability has been resolved: bpf: Guard __get_user acesss with access_ok for uprobe_multi data As reported by sashiko [1] we need to use access_ok to check the user space data bounds before we use __get-user to get it. [1] https://lore.kernel.org/bpf/[email protected]/ Added Reference https://git.kernel.org/stable/c/4d87a251d45b4a95eb4c0abcfab809c9f231258a Added Reference https://git.kernel.org/stable/c/c6d51ad36490013ee9df94a372d3bf794bd304d1