Riskcovery

CVE-2023-42753

Kernel: netfilter: potential slab-out-of-bound access due to integer underflow

State
Published
Severity
7.0 High
Published
Sep 25, 2023
Updated
Oct 14, 2026
Reserved
Sep 13, 2023

Read the record on cve.org

Description

An array indexing vulnerability was found in the netfilter subsystem of the Linux kernel. A missing macro could lead to a miscalculation of the `h->nets` array offset, providing attackers with the primitive to arbitrarily increment/decrement a memory buffer out-of-bound. This issue may allow a local user to crash the system or potentially escalate their privileges on the system.

Scores

CVSSScoreVectorSource
3.17.0 HighCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:Hredhat

Weaknesses

Affected Products

ProductVersions
Red Hat Enterprise Linux 7Red Hat
  • 0:3.10.0-1160.108.1.rt56.1259.el7 and laterNot affected
Red Hat Enterprise Linux 7Red Hat
  • 0:3.10.0-1160.108.1.el7 and laterNot affected
Red Hat Enterprise Linux 7Red Hat
    Red Hat Enterprise Linux 7.7 Advanced Update SupportRed Hat
    • 0:3.10.0-1062.85.1.el7 and laterNot affected
    Red Hat Enterprise Linux 8Red Hat
    • 0:4.18.0-513.11.1.rt7.313.el8_9 and laterNot affected
    Red Hat Enterprise Linux 8Red Hat
      Red Hat Enterprise Linux 8Red Hat
      • 0:4.18.0-513.11.1.el8_9 and laterNot affected
      Red Hat Enterprise Linux 8.2 Advanced Update SupportRed Hat
      • 0:4.18.0-193.120.1.el8_2 and laterNot affected
      Red Hat Enterprise Linux 8.2 Telecommunications Update ServiceRed Hat
      • 0:4.18.0-193.120.1.rt13.171.el8_2 and laterNot affected
      Red Hat Enterprise Linux 8.2 Telecommunications Update ServiceRed Hat
      • 0:4.18.0-193.120.1.el8_2 and laterNot affected
      Red Hat Enterprise Linux 8.2 Update Services for SAP SolutionsRed Hat
        Red Hat Enterprise Linux 8.2 Update Services for SAP SolutionsRed Hat
        • 0:4.18.0-193.120.1.el8_2 and laterNot affected
        Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update SupportRed Hat
        • 0:4.18.0-305.120.1.el8_4 and laterNot affected
        Red Hat Enterprise Linux 8.4 Telecommunications Update ServiceRed Hat
        • 0:4.18.0-305.120.1.rt7.196.el8_4 and laterNot affected
        Red Hat Enterprise Linux 8.4 Telecommunications Update ServiceRed Hat
        • 0:4.18.0-305.120.1.el8_4 and laterNot affected
        Red Hat Enterprise Linux 8.4 Update Services for SAP SolutionsRed Hat
        • 0:4.18.0-305.120.1.el8_4 and laterNot affected
        Red Hat Enterprise Linux 8.4 Update Services for SAP SolutionsRed Hat
          Red Hat Enterprise Linux 8.6 Extended Update SupportRed Hat
            Red Hat Enterprise Linux 8.6 Extended Update SupportRed Hat
            • 0:4.18.0-372.87.1.el8_6 and laterNot affected
            Red Hat Enterprise Linux 8.8 Extended Update SupportRed Hat
            • 0:4.18.0-477.36.1.el8_8 and laterNot affected
            Red Hat Enterprise Linux 8.8 Extended Update SupportRed Hat
              Red Hat Enterprise Linux 9Red Hat
              • 0:5.14.0-362.18.1.el9_3 and laterNot affected
              Red Hat Enterprise Linux 9Red Hat
                Red Hat Enterprise Linux 9Red Hat
                • 0:5.14.0-362.18.1.el9_3 and laterNot affected
                Red Hat Enterprise Linux 9.0 Extended Update SupportRed Hat
                • 0:5.14.0-70.80.1.el9_0 and laterNot affected
                Red Hat Enterprise Linux 9.0 Extended Update SupportRed Hat
                • 0:5.14.0-70.80.1.rt21.151.el9_0 and laterNot affected
                Red Hat Enterprise Linux 9.0 Extended Update SupportRed Hat
                  Red Hat Enterprise Linux 9.2 Extended Update SupportRed Hat
                  • 0:5.14.0-284.40.1.el9_2 and laterNot affected
                  Red Hat Enterprise Linux 9.2 Extended Update SupportRed Hat
                  • 0:5.14.0-284.40.1.rt14.325.el9_2 and laterNot affected
                  Red Hat Enterprise Linux 9.2 Extended Update SupportRed Hat
                    Red Hat Virtualization 4 for Red Hat Enterprise Linux 8Red Hat
                    • 0:4.18.0-372.87.1.el8_6 and laterNot affected
                    Red Hat Enterprise Linux 6Red Hat
                      Red Hat Enterprise Linux 9Red Hat

                        References

                        Every record here comes from the CVE Program’s CVE List. © 1999–2026 The MITRE Corporation. CVE is a registered trademark of The MITRE Corporation. The records are reproduced under the CVE Program terms of use.