Vulnerability in Linux Kernel
CVE-2023-42756
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.
Vulnerability class: Race Condition
Published · last modified .
CVSS v3 metric
CVSS v3 base score 4.4 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.003 (17.8th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 18th percentile — 17.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: -0.000
Affected products
- Linux Kernel — versions 6.6
- Debian Linux — versions 10.0
- Fedoraproject Fedora — versions 37, 38, 39
- Red Hat Enterprise Linux 6
- Red Hat Enterprise Linux 7
- Red Hat Enterprise Linux 8
- Red Hat Enterprise Linux 9 — versions 0:5.14.0-427.13.1.el9_4
- Red Hat Enterprise Linux — versions 9.0
Weakness classification (CWE)
References
- access.redhat.com/errata/RHSA-2024:2394 (vendor-advisory)
- access.redhat.com/security/cve/CVE-2023-42756 (Patch, Third Party Advisory, vdb-entry)
- bugzilla.redhat.com/show_bug.cgi (issue-tracking, Exploit, Patch, Third Party Advisory, Issue Tracking)
- seclists.org/oss-sec/2023/q3/242 (Exploit, Patch, Mailing List, Third Party Advisory)
- af854a3a-2127-422b-91ae-364da2661108
- af854a3a-2127-422b-91ae-364da2661108
- af854a3a-2127-422b-91ae-364da2661108
- af854a3a-2127-422b-91ae-364da2661108
Frequently asked questions
- What is CVE-2023-42756?
- CVE-2023-42756 is a medium-severity vulnerability in Linux Kernel, classified under Concurrent Execution using Shared Resource with Improper Synchronization (Race Condition). CVSS score: 4.4/10. Published 2023-09-28.
- How severe is CVE-2023-42756?
- Medium severity. CVSS v3 base score is 4.4 out of 10.