CVE-2023-42753

Summary

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.

Affected Software

VendorProductVersion RangeStatus
Red HatRed Hat Enterprise Linux 70:3.10.0-1160.108.1.rt56.1259.el7 < *unaffected
Red HatRed Hat Enterprise Linux 70:3.10.0-1160.108.1.el7 < *unaffected
Red HatRed Hat Enterprise Linux 7.7 Advanced Update Support0:3.10.0-1062.85.1.el7 < *unaffected
Red HatRed Hat Enterprise Linux 80:4.18.0-513.11.1.rt7.313.el8_9 < *unaffected
Red HatRed Hat Enterprise Linux 80:4.18.0-513.11.1.el8_9 < *unaffected
Red HatRed Hat Enterprise Linux 8.2 Advanced Update Support0:4.18.0-193.120.1.el8_2 < *unaffected
Red HatRed Hat Enterprise Linux 8.2 Telecommunications Update Service0:4.18.0-193.120.1.rt13.171.el8_2 < *unaffected
Red HatRed Hat Enterprise Linux 8.2 Telecommunications Update Service0:4.18.0-193.120.1.el8_2 < *unaffected
Red HatRed Hat Enterprise Linux 8.2 Update Services for SAP Solutions0:4.18.0-193.120.1.el8_2 < *unaffected
Red HatRed Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support0:4.18.0-305.120.1.el8_4 < *unaffected
Red HatRed Hat Enterprise Linux 8.4 Telecommunications Update Service0:4.18.0-305.120.1.rt7.196.el8_4 < *unaffected
Red HatRed Hat Enterprise Linux 8.4 Telecommunications Update Service0:4.18.0-305.120.1.el8_4 < *unaffected
Red HatRed Hat Enterprise Linux 8.4 Update Services for SAP Solutions0:4.18.0-305.120.1.el8_4 < *unaffected
Red HatRed Hat Enterprise Linux 8.6 Extended Update Support0:4.18.0-372.87.1.el8_6 < *unaffected
Red HatRed Hat Enterprise Linux 8.8 Extended Update Support0:4.18.0-477.36.1.el8_8 < *unaffected
Red HatRed Hat Enterprise Linux 90:5.14.0-362.18.1.el9_3 < *unaffected
Red HatRed Hat Enterprise Linux 90:5.14.0-362.18.1.el9_3 < *unaffected
Red HatRed Hat Enterprise Linux 9.0 Extended Update Support0:5.14.0-70.80.1.el9_0 < *unaffected
Red HatRed Hat Enterprise Linux 9.0 Extended Update Support0:5.14.0-70.80.1.rt21.151.el9_0 < *unaffected
Red HatRed Hat Enterprise Linux 9.2 Extended Update Support0:5.14.0-284.40.1.el9_2 < *unaffected
Red HatRed Hat Enterprise Linux 9.2 Extended Update Support0:5.14.0-284.40.1.rt14.325.el9_2 < *unaffected
Red HatRed Hat Virtualization 4 for Red Hat Enterprise Linux 80:4.18.0-372.87.1.el8_6 < *unaffected

Weaknesses

  • CWE-787: Out-of-bounds Write

Workarounds

Red Hat has investigated whether a possible mitigation exists for this issue, and has not been able to identify a practical example. Please update the affected package as soon as possible.

ADP Enrichment

CVE Program Container

Additional References

CISA ADP Vulnrichment

  • SSVC:
  • Exploitation: poc
    • Automatable: no
    • Technical Impact: total

References