Riskcovery

CVE-2023-3390

Use-after-free in Linux kernel's netfilter subsystem

State
Published
Severity
7.8 High
Published
Jun 28, 2023
Updated
Jul 22, 2026
Reserved
Jun 23, 2023

Read the record on cve.org

Description

A use-after-free vulnerability was found in the Linux kernel's netfilter subsystem in net/netfilter/nf_tables_api.c.

Mishandled error handling with NFT_MSG_NEWRULE makes it possible to use a dangling pointer in the same transaction causing a use-after-free vulnerability. This flaw allows a local attacker with user access to cause a privilege escalation issue.

We recommend upgrading past commit 1240eb93f0616b21c675416516ff3d74798fdc97

Scores

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

Weaknesses

Affected Products

ProductVersions
Linux KernelLinux
  • 3.16 to before 4.14.322Affected
  • 4.15 to before 4.19.291Affected
  • 4.20 to before 5.4.251Affected
  • 5.5 to before 5.10.188Affected
  • 5.11 to before 5.15.118Affected
  • 5.16 to before 6.1.35Affected
  • 6.2 to before 6.3.9Affected

References

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