CVE-2021-47040
- Source
- https://cve.org/CVERecord?id=CVE-2021-47040
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-47040.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2021-47040
- Downstream
- Published
- 2024-02-28T09:15:39.993Z
- Modified
- 2026-03-15T22:42:45.396581Z
- Severity
-
- 7.8 (High) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H CVSS Calculator
- Summary
- [none]
- Details
-
In the Linux kernel, the following vulnerability has been resolved:
io_uring: fix overflows checks in provide buffers
Colin reported before possible overflow and sign extension problems in ioprovidebuffersprep(). As Linus pointed out previous attempt did nothing useful, see d81269fecb8ce ("iouring: fix provide_buffers sign extension").
Do that with help of check<op>overflow helpers. And fix struct ioprovidebuf::len type, as it doesn't make much sense to keep it signed.
- References
Affected packages
Git /
Database specific
unresolved_ranges
[
{
"events": [
{
"introduced": "5.8"
},
{
"fixed": "5.10.37"
}
]
},
{
"events": [
{
"introduced": "5.11"
},
{
"fixed": "5.11.21"
}
]
},
{
"events": [
{
"introduced": "5.12"
},
{
"fixed": "5.12.4"
}
]
}
]
source
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-47040.json"