CVE-2026-90327
Received
Received - Intake
BaseFortify
Vulnerability report for CVE-2026-90327, including description, CVSS score, EPSS score, affected products, exploitability, helpful resources, and attack-flow context.
Publication date: 2026-09-17
Last updated on: 2026-09-17
Assigner: kernel.org
Description
Description
In the Linux kernel, the following vulnerability has been resolved:
phonet: pep: do not write beyond optlen in getsockopt
pep_getsockopt() clamps the reported length to the caller's buffer with
min_t(), but then stores the value with put_user(val, (int __user *)
optval), which always writes sizeof(int) bytes. A getsockopt() call with
an optlen smaller than sizeof(int) thus reports the clamped length yet
writes a full int, one to three bytes past the user buffer.
Write the value with copy_to_user() bounded by len, so at most optlen
bytes are copied, matching the length reported back to userspace.
CVSS Scores
EPSS Scores
| Probability: | |
| Percentile: |
Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| Linux | Linux | 02a47617cdce440f60c71a51f3a93f9f5fcc5a7a |
| Linux | Linux | 02a47617cdce440f60c71a51f3a93f9f5fcc5a7a |
| Linux | Linux | 02a47617cdce440f60c71a51f3a93f9f5fcc5a7a |
| Linux | Linux | 02a47617cdce440f60c71a51f3a93f9f5fcc5a7a |
| Linux | Linux | 02a47617cdce440f60c71a51f3a93f9f5fcc5a7a |
| Linux | Linux | 02a47617cdce440f60c71a51f3a93f9f5fcc5a7a |
| Linux | Linux | 02a47617cdce440f60c71a51f3a93f9f5fcc5a7a |
| Linux | Linux | 02a47617cdce440f60c71a51f3a93f9f5fcc5a7a |
| Linux | Linux | 2.6.28 |
Helpful Resources
Exploitability
CWE
KEV
| CWE ID | Description |
|---|---|
| CWE-UNKNOWN |
