Vulnerability Details : CVE-2023-42756
Potential exploit
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.
Products affected by CVE-2023-42756
- cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*
- cpe:2.3:o:redhat:enterprise_linux:9.0:*:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:6.6:rc1:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:6.6:rc2:*:*:*:*:*:*
- cpe:2.3:o:fedoraproject:fedora:37:*:*:*:*:*:*:*
- cpe:2.3:o:fedoraproject:fedora:38:*:*:*:*:*:*:*
- cpe:2.3:o:fedoraproject:fedora:39:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2023-42756
0.00%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2023-42756
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
4.7
|
MEDIUM | CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H |
1.0
|
3.6
|
NIST | |
|
4.4
|
MEDIUM | CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H |
0.8
|
3.6
|
Red Hat, Inc. |
CWE ids for CVE-2023-42756
-
The product contains a concurrent code sequence that requires temporary, exclusive access to a shared resource, but a timing window exists in which the shared resource can be modified by another code sequence operating concurrently.Assigned by:
- nvd@nist.gov (Primary)
- secalert@redhat.com (Secondary)
References for CVE-2023-42756
-
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/V5PDNWPKAP3WL5RQZ4RIDS6MG32OHH5R/
[SECURITY] Fedora 39 Update: kernel-6.5.6-300.fc39 - package-announce - Fedora Mailing-ListsMailing List
-
https://lists.debian.org/debian-lts-announce/2023/10/msg00027.html
[SECURITY] [DLA 3623-1] linux-5.10 security updateMailing List;Third Party Advisory
-
https://access.redhat.com/errata/RHSA-2024:2394
RHSA-2024:2394 - Security Advisory - Red Hat Customer Portal
-
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/GISYSL3F6WIEVGHJGLC2MFNTUXHPTKQH/
[SECURITY] Fedora 37 Update: kernel-6.5.6-100.fc37 - package-announce - Fedora Mailing-ListsMailing List
-
https://seclists.org/oss-sec/2023/q3/242
oss-sec: [CVE-2023-42756] Linux kernel race condition in netfilterExploit;Mailing List;Patch;Third Party Advisory
-
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/GPMICQ2HVZO5UAM5KPXHAZKA2U3ZDOO6/
[SECURITY] Fedora 38 Update: kernel-6.5.6-200.fc38 - package-announce - Fedora Mailing-ListsMailing List
-
https://access.redhat.com/security/cve/CVE-2023-42756
CVE-2023-42756- Red Hat Customer PortalPatch;Third Party Advisory
-
https://bugzilla.redhat.com/show_bug.cgi?id=2239848
2239848 – (CVE-2023-42756) CVE-2023-42756 kernel: netfilter: race condition between IPSET_CMD_ADD and IPSET_CMD_SWAPExploit;Issue Tracking;Patch;Third Party Advisory
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