Riskcovery

CVE-2023-39192

Kernel: netfilter: xtables out-of-bounds read in u32_match_it()

State
Published
Severity
6.7 Medium
Published
Oct 9, 2023
Updated
Oct 14, 2026
Reserved
Jul 25, 2023

Read the record on cve.org

Description

A flaw was found in the Netfilter subsystem in the Linux kernel. The xt_u32 module did not validate the fields in the xt_u32 structure. This flaw allows a local privileged attacker to trigger an out-of-bounds read by setting the size fields with a value beyond the array boundaries, leading to a crash or information disclosure.

Scores

CVSSScoreVectorSource
3.16.7 MediumCVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:N/A:Lredhat

Weaknesses

Affected Products

ProductVersions
Red Hat Enterprise Linux 8Red Hat
  • 0:4.18.0-553.rt7.342.el8_10 and laterNot affected
Red Hat Enterprise Linux 8Red Hat
  • 0:4.18.0-553.el8_10 and laterNot affected
Red Hat Enterprise Linux 6Red Hat
    Red Hat Enterprise Linux 7Red Hat
      Red Hat Enterprise Linux 7Red Hat
        Red Hat Enterprise Linux 9Red Hat
          Red Hat Enterprise Linux 9Red Hat

            References

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