CVE-2021-47040
- Source
- https://nvd.nist.gov/vuln/detail/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
- Related
- Published
- 2024-02-28T09:15:39Z
- Modified
- 2025-01-09T15:29:49Z
- 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
-
- https://git.kernel.org/stable/c/38134ada0ceea3e848fe993263c0ff6207fd46e7
- https://git.kernel.org/stable/c/51bf90901952aaac564bbdb36b2b503050c53dd9
- https://git.kernel.org/stable/c/84b8c266c4bfe9ed5128e13253c388deb74b1b03
- https://git.kernel.org/stable/c/cbbc13b115b8f18e0a714d89f87fbdc499acfe2d
- https://security-tracker.debian.org/tracker/CVE-2021-47040
Affected packages
Debian:11 / linux
Package
- Name
- linux
- Purl
- pkg:deb/debian/linux?arch=source
Debian:12 / linux
Package
- Name
- linux
- Purl
- pkg:deb/debian/linux?arch=source
Debian:13 / linux
Package
- Name
- linux
- Purl
- pkg:deb/debian/linux?arch=source