CVE-2024-1086
Linux Kernel Use-After-Free Vulnerability
Does this matter?
Known to be exploited in the wild (CISA KEV, CISA remediation deadline 20 June 2024). Treat as an emergency change: patch or isolate now, then hunt for prior compromise.
Description
A use-after-free vulnerability in the Linux kernel's netfilter: nf_tables component can be exploited to achieve local privilege escalation. The nft_verdict_init() function allows positive values as drop error within the hook verdict, and hence the nf_hook_slow() function can cause a double free vulnerability when NF_DROP is issued with a drop error which resembles NF_ACCEPT. We recommend upgrading past commit f342de4e2f33e0e39165d8639387aa6c19dff660.
- CVSS 3.1
- 7.8 HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 28.06% probability · 98th percentile
- CISA KEV
- Listed 30 May 2024 · due 20 June 2024 · used in ransomware campaigns
- Weakness
- CWE-416
- Affected
- netapp/h300s firmware · netapp/h500s firmware · netapp/h700s firmware · netapp/h410s firmware · netapp/h410c firmware · netapp/bootstrap os · linux/linux kernel · fedoraproject/fedora · redhat/enterprise linux desktop · redhat/enterprise linux for ibm z systems · redhat/enterprise linux for power big endian · redhat/enterprise linux for power little endian · redhat/enterprise linux server · redhat/enterprise linux workstation · debian/debian linux · netapp/a250 firmware · netapp/500f firmware · netapp/c250 firmware
- Source
- cve-coordination@google.com
CISA notes
Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable. This vulnerability affects a common open-source component, third-party library, or a protocol used by different products. Please check with specific vendors for information on patching status. For more information, please see: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=f342de4e2f33e0e39165d8639387aa6c19dff660; https://nvd.nist.gov/vuln/detail/CVE-2024-1086
References
- http://www.openwall.com/lists/oss-security/2024/04/10/22Mailing List, Patch
- http://www.openwall.com/lists/oss-security/2024/04/10/23Mailing List, Patch
- http://www.openwall.com/lists/oss-security/2024/04/14/1Exploit, Mailing List
- http://www.openwall.com/lists/oss-security/2024/04/15/2Mailing List
- http://www.openwall.com/lists/oss-security/2024/04/17/5Exploit, Mailing List
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=f342de4e2f33e0e39165d8639387aa6c19dff660Patch
- https://github.com/Notselwyn/CVE-2024-1086Exploit, Third Party Advisory
- https://kernel.dance/f342de4e2f33e0e39165d8639387aa6c19dff660Patch
- https://lists.debian.org/debian-lts-announce/2024/06/msg00016.htmlMailing List
- https://lists.debian.org/debian-lts-announce/2024/06/msg00020.htmlMailing List
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/7LSPIOMIJYTLZB6QKPQVVAYSUETUWKPF/Mailing List
- https://news.ycombinator.com/item?id=39828424Issue Tracking
- https://pwning.tech/nftables/Exploit, Technical Description, Third Party Advisory
- https://security.netapp.com/advisory/ntap-20240614-0009/Third Party Advisory
- http://www.openwall.com/lists/oss-security/2024/04/10/22Mailing List, Patch
- http://www.openwall.com/lists/oss-security/2024/04/10/23Mailing List, Patch
- http://www.openwall.com/lists/oss-security/2024/04/14/1Exploit, Mailing List
- http://www.openwall.com/lists/oss-security/2024/04/15/2Mailing List
- http://www.openwall.com/lists/oss-security/2024/04/17/5Exploit, Mailing List
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=f342de4e2f33e0e39165d8639387aa6c19dff660Patch
- https://github.com/Notselwyn/CVE-2024-1086Exploit, Third Party Advisory
- https://kernel.dance/f342de4e2f33e0e39165d8639387aa6c19dff660Patch
- https://lists.debian.org/debian-lts-announce/2024/06/msg00016.htmlMailing List
- https://lists.debian.org/debian-lts-announce/2024/06/msg00020.htmlMailing List
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/7LSPIOMIJYTLZB6QKPQVVAYSUETUWKPF/Mailing List
- https://news.ycombinator.com/item?id=39828424Issue Tracking
- https://pwning.tech/nftables/Exploit, Technical Description, Third Party Advisory
- https://security.netapp.com/advisory/ntap-20240614-0009/Third Party Advisory
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2024-1086US Government Resource
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.