CVE-2023-42756: Kernel: netfilter: race condition between ipset_cmd_add and ipset_cmd_swap
First published: Wed Sep 20 2023(Updated: )
A flaw was found in the Netfilter subsystem of the Linux kernel. A race condition between IPSET_CMD_ADD and IPSET_CMD_SWAP can lead to a kernel panic due to the invocation of `__ip_set_put` on a wrong `set`. This issue may allow a local user to crash the system.
Credit: secalert@redhat.com secalert@redhat.com secalert@redhat.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| redhat/kernel | <6.6 | 6.6 |
| Linux Kernel | <6.6 | |
| Linux Kernel | =6.6-rc1 | |
| Linux Kernel | =6.6-rc2 | |
| Red Hat Enterprise Linux | =9.0 | |
| Debian Debian Linux | =10.0 | |
| Fedoraproject Fedora | =37 | |
| Fedoraproject Fedora | =38 | |
| Fedoraproject Fedora | =39 | |
| debian/linux | 5.10.223-1 5.10.226-1 6.1.123-1 6.1.119-1 6.12.10-1 6.12.11-1 | |
| IBM InfoSphere Guardium z/OS | <=12.0 |
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Reference Links
- https://access.redhat.com/security/cve/CVE-2023-42756
- https://bugzilla.redhat.com/show_bug.cgi?id=2239848
- https://lists.debian.org/debian-lts-announce/2023/10/msg00027.html
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/GISYSL3F6WIEVGHJGLC2MFNTUXHPTKQH/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/GPMICQ2HVZO5UAM5KPXHAZKA2U3ZDOO6/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/V5PDNWPKAP3WL5RQZ4RIDS6MG32OHH5R/
- https://seclists.org/oss-sec/2023/q3/242
- https://access.redhat.com/errata/RHSA-2024:2394
- https://launchpad.net/bugs/cve/CVE-2023-42756
- https://exchange.xforce.ibmcloud.com/vulnerabilities/267151
- https://www.ibm.com/support/pages/node/7152469 (Advisory)
- https://github.com/torvalds/linux/commit/7433b6d2afd512d04398c73aa984d1e285be125b
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=2241163
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-42756
- https://nvd.nist.gov/vuln/detail/CVE-2023-42756
- https://security-tracker.debian.org/tracker/CVE-2023-42756
- https://ubuntu.com/security/CVE-2023-42756
- https://www.openwall.com/lists/oss-security/2023/09/27/2
- https://git.kernel.org/linus/7433b6d2afd512d04398c73aa984d1e285be125b
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