CVE-2023-42756

Advisory lineage Upstream: 0 Downstream: 22
Modified
Published: 28 Sept 2023, 13:55
Last modified:06 Nov 2025, 19:47

Vulnerability Summary

Overall Risk (default)
medium
29/100
CVSS Score
4.7 MEDIUM
v3.1 (nvd)
EPSS Score
<0.01% LOW
0% probability 0.00%
KEV
Not listed
Ransomware
No reports
Public exploits
2 found
Dark Web
Not detected

Timeline

28 Sept 2023, 13:55
Published
Vulnerability first disclosed
06 Nov 2025, 19:47
Last Modified
Vulnerability information updated

Description

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.

CVSS Metrics

  • v3.1•MEDIUM•Score: 4.4CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H
  • v3.1•MEDIUM•Score: 4.7CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H

EPSS Trends

Current EPSS score: 0.00%• Percentile: 0%

Techniques & Countermeasures

  • CWE-362•Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')

    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.

Affected Systems

  • debian•debian_linux

    10.0

  • fedoraproject•fedora

    37 | 38 | 39

  • linux•linux_kernel

    < 6.6 | 6.6:rc1 | 6.6:rc2

  • redhat•enterprise_linux

    9.0

References (8)