CVE-2023-4004

Summary

A use-after-free flaw was found in the Linux kernel's netfilter in the way a user triggers the nft_pipapo_remove function with the element, without a NFT_SET_EXT_KEY_END. This issue could 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 80:4.18.0-477.27.1.rt7.290.el8_8 < *unaffected
Red HatRed Hat Enterprise Linux 80:4.18.0-477.27.1.el8_8 < *unaffected
Red HatRed Hat Enterprise Linux 8.2 Advanced Update Support0:4.18.0-193.119.1.el8_2 < *unaffected
Red HatRed Hat Enterprise Linux 8.2 Telecommunications Update Service0:4.18.0-193.119.1.rt13.170.el8_2 < *unaffected
Red HatRed Hat Enterprise Linux 8.2 Telecommunications Update Service0:4.18.0-193.119.1.el8_2 < *unaffected
Red HatRed Hat Enterprise Linux 8.2 Update Services for SAP Solutions0:4.18.0-193.119.1.el8_2 < *unaffected
Red HatRed Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support0:4.18.0-305.103.1.el8_4 < *unaffected
Red HatRed Hat Enterprise Linux 8.4 Telecommunications Update Service0:4.18.0-305.103.1.rt7.178.el8_4 < *unaffected
Red HatRed Hat Enterprise Linux 8.4 Telecommunications Update Service0:4.18.0-305.103.1.el8_4 < *unaffected
Red HatRed Hat Enterprise Linux 8.4 Update Services for SAP Solutions0:4.18.0-305.103.1.el8_4 < *unaffected
Red HatRed Hat Enterprise Linux 8.6 Extended Update Support0:4.18.0-372.75.1.el8_6 < *unaffected
Red HatRed Hat Enterprise Linux 90:5.14.0-284.30.1.el9_2 < *unaffected
Red HatRed Hat Enterprise Linux 90:5.14.0-284.30.1.rt14.315.el9_2 < *unaffected
Red HatRed Hat Enterprise Linux 90:5.14.0-284.30.1.el9_2 < *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 Virtualization 4 for Red Hat Enterprise Linux 80:4.18.0-372.75.1.el8_6 < *unaffected

Weaknesses

  • CWE-416: Use After Free

Workarounds

This flaw can be mitigated by preventing the affected netfilter kernel module from being loaded. For instructions on how to blacklist a kernel module, please see https://access.redhat.com/solutions/41278.

ADP Enrichment

CVE Program Container

Additional References

References