CVE-2022-32250
HIGHCVSS 7.8/10EPSS 3.13%
Last modified
CVE-2022-32250 is a high-severity vulnerability rated 7.8/10 on the CVSS scale. net/netfilter/nf_tables_api.c in the Linux kernel through 5.18.1 allows a local user (able to create user/net namespaces) to escalate privileges to root because an incorrect NFT_STATEFUL_EXPR check leads to a use-after-free.. EPSS estimates a 3.13% chance of exploitation in the next 30 days.
Description
net/netfilter/nf_tables_api.c in the Linux kernel through 5.18.1 allows a local user (able to create user/net namespaces) to escalate privileges to root because an incorrect NFT_STATEFUL_EXPR check leads to a use-after-free.
Metrics
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | >= 4.1, < 4.9.318 |
| Linux | Linux Kernel | >= 4.10, < 4.14.283 |
| Linux | Linux Kernel | >= 4.15, < 4.19.247 |
| Linux | Linux Kernel | >= 4.20, < 5.4.198 |
| Linux | Linux Kernel | >= 5.5, < 5.10.120 |
| Linux | Linux Kernel | >= 5.11, < 5.15.45 |
| Linux | Linux Kernel | >= 5.16, < 5.17.13 |
| Linux | Linux Kernel | >= 5.18, < 5.18.2 |
| Fedoraproject | Fedora | 35 |
| Fedoraproject | Fedora | 36 |
| Debian | Debian Linux | 9.0 |
| Debian | Debian Linux | 10.0 |
| Netapp | H300s Firmware | All versions |
| Netapp | H500s Firmware | All versions |
| Netapp | H700s Firmware | All versions |
| Netapp | H410s Firmware | All versions |
| Netapp | H410c Firmware | All versions |
References
- http://www.openwall.com/lists/oss-security/2022/06/03/1Exploit, Mailing List, Patch, Third Party Advisory
- http://www.openwall.com/lists/oss-security/2022/06/04/1Mailing List, Patch, Third Party Advisory
- http://www.openwall.com/lists/oss-security/2022/06/20/1Mailing List, Third Party Advisory
- http://www.openwall.com/lists/oss-security/2022/07/03/5Mailing List, Third Party Advisory
- http://www.openwall.com/lists/oss-security/2022/07/03/6Mailing List, Third Party Advisory
- http://www.openwall.com/lists/oss-security/2022/08/25/1Mailing List, Patch, Third Party Advisory
- http://www.openwall.com/lists/oss-security/2022/09/02/9Mailing List, Third Party Advisory
- https://blog.theori.io/research/CVE-2022-32250-linux-kernel-lpe-2022/Exploit, Third Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=2092427Issue Tracking, Third Party Advisory
- https://git.kernel.org/pub/scm/linux/kernel/git/netdev/net.git/commit/net/netfilter?id=520778042ccca019f3ffa136dd0ca565c486ceddMailing List, Patch, Vendor Advisory
- https://github.com/theori-io/CVE-2022-32250-exploitExploit, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2022/07/msg00000.htmlMailing List, Third Party Advisory
- https://security.netapp.com/advisory/ntap-20220715-0005/Third Party Advisory
- https://www.debian.org/security/2022/dsa-5161Third Party Advisory
- https://www.debian.org/security/2022/dsa-5173Third Party Advisory
- https://www.openwall.com/lists/oss-security/2022/05/31/1Exploit, Mailing List, Patch, Third Party Advisory
- http://www.openwall.com/lists/oss-security/2022/06/03/1Exploit, Mailing List, Patch, Third Party Advisory
- http://www.openwall.com/lists/oss-security/2022/06/04/1Mailing List, Patch, Third Party Advisory
- http://www.openwall.com/lists/oss-security/2022/06/20/1Mailing List, Third Party Advisory
- http://www.openwall.com/lists/oss-security/2022/07/03/5Mailing List, Third Party Advisory
- http://www.openwall.com/lists/oss-security/2022/07/03/6Mailing List, Third Party Advisory
- http://www.openwall.com/lists/oss-security/2022/08/25/1Mailing List, Patch, Third Party Advisory
- http://www.openwall.com/lists/oss-security/2022/09/02/9Mailing List, Third Party Advisory
- https://blog.theori.io/research/CVE-2022-32250-linux-kernel-lpe-2022/Exploit, Third Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=2092427Issue Tracking, Third Party Advisory
- https://git.kernel.org/pub/scm/linux/kernel/git/netdev/net.git/commit/net/netfilter?id=520778042ccca019f3ffa136dd0ca565c486ceddMailing List, Patch, Vendor Advisory
- https://github.com/theori-io/CVE-2022-32250-exploitExploit, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2022/07/msg00000.htmlMailing List, Third Party Advisory
- https://security.netapp.com/advisory/ntap-20220715-0005/Third Party Advisory
- https://www.debian.org/security/2022/dsa-5161Third Party Advisory
- https://www.debian.org/security/2022/dsa-5173Third Party Advisory
- https://www.openwall.com/lists/oss-security/2022/05/31/1Exploit, Mailing List, Patch, Third Party Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2022-32250?
net/netfilter/nf_tables_api.c in the Linux kernel through 5.18.1 allows a local user (able to create user/net namespaces) to escalate privileges to root because an incorrect NFT_STATEFUL_EXPR check leads to a use-after-free.
How severe is CVE-2022-32250?
CVE-2022-32250 has a CVSS score of 7.8/10 (HIGH severity). The EPSS model estimates a 3.13% probability of exploitation in the next 30 days.
How do I fix CVE-2022-32250?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
Are you affected by CVE-2022-32250?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST