CVE-2022-3586: Linux Kernel Net Scheduler Use-After-Free Information Disclosure Vulnerability
First published: Wed Oct 19 2022(Updated: )
A flaw was found in the Linux kernel’s networking code. A use-after-free was found in the way the sch_sfb enqueue function used the socket buffer (SKB) cb field after the same SKB had been enqueued (and freed) into a child qdisc. This flaw allows a local, unprivileged user to crash the system, causing a denial of service.
Credit: secalert@redhat.com secalert@redhat.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Linux Linux kernel | <6.0 | |
| Linux Linux kernel | =6.0-rc1 | |
| Linux Linux kernel | =6.0-rc2 | |
| Linux Linux kernel | =6.0-rc3 | |
| Linux Linux kernel | =6.0-rc4 | |
| Debian Debian Linux | =10.0 | |
| Linux kernel | ||
| debian/linux | 5.10.223-1 5.10.226-1 6.1.115-1 6.1.119-1 6.11.10-1 6.12.5-1 |
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Reference Links
- https://github.com/torvalds/linux/commit/9efd23297cca
- https://lists.debian.org/debian-lts-announce/2022/11/msg00001.html
- https://www.zerodayinitiative.com/advisories/upcoming/
- https://launchpad.net/bugs/cve/CVE-2022-3586
- https://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-fs.git/commit/?h=rxrpc-ringless-2&id=9efd23297cca530bb35e1848665805d3fcdd7889
- https://www.zerodayinitiative.com/advisories/ZDI-22-1452/
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2022-3586
- https://nvd.nist.gov/vuln/detail/CVE-2022-3586
- https://security-tracker.debian.org/tracker/CVE-2022-3586
- https://ubuntu.com/security/CVE-2022-3586
- https://git.kernel.org/linus/9efd23297cca530bb35e1848665805d3fcdd7889
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