Riskcovery

CVE-2026-97998

netfilter: nfnetlink_log: cope with concurrent instance destruction

State
Published
Severity
Not scored
Published
Sep 25, 2026
Updated
Oct 19, 2026
Reserved
Sep 25, 2026

Read the record on cve.org

Description

In the Linux kernel, the following vulnerability has been resolved:

netfilter: nfnetlink_log: cope with concurrent instance destruction

Instances are refcounted. However, only memory release happens on the 1 -> 0 transition; the unlink from hashes can occur with any refcount.

Uncooperative userspace can force a situation where a queue is pending for destruction from netlink event while a different socket with same portid processes an UNBIND request.

With right timing, this will unhash the instance again:

Oops: general protection fault, [..] Call Trace: <TASK> nfulnl_recv_config+0x31a/0xd50 nfnetlink_rcv_msg+0x7c2/0xeb0

Scores

The record has no CVSS score.

Weaknesses

The record names no weakness.

Affected Products

ProductVersions
LinuxLinux
  • 0597f2680d666a3bcf101ac0c771ba7e50016bbd to before c5c89beaa628d6ac527c6eb2e01b2b52eb417f59Affected
  • 0597f2680d666a3bcf101ac0c771ba7e50016bbd to before 042465e7d3d3127e21f04e42c1639e2518b98915Affected
  • 0597f2680d666a3bcf101ac0c771ba7e50016bbd to before 291685fc8d2e4cf75ed3a23c810883653f407f46Affected
  • 0597f2680d666a3bcf101ac0c771ba7e50016bbd to before 3161186a2ff81288e9a5f35daf1911153764ecaeAffected
  • 0597f2680d666a3bcf101ac0c771ba7e50016bbd to before 0234d7ca0317be0a623300e1693cd794bbfdf8afAffected
  • 0597f2680d666a3bcf101ac0c771ba7e50016bbd to before 1a7a8ac9a9f0ad0d410c901cb6f233833518844cAffected
  • 0597f2680d666a3bcf101ac0c771ba7e50016bbd to before e2dd0f1f8c4e6334699ea6382e52f6da0c7e45ebAffected
  • 0597f2680d666a3bcf101ac0c771ba7e50016bbd to before 387d744fa7e499d2c3748a4e60e02ebb24e7fb16Affected
LinuxLinux
  • 2.6.14Affected
  • before 2.6.14Not affected
  • 5.10.271 through 5.10.*Not affected
  • 5.15.222 through 5.15.*Not affected
  • 6.1.189 through 6.1.*Not affected
  • 6.6.158 through 6.6.*Not affected
  • 6.12.111 through 6.12.*Not affected
  • 6.18.53 through 6.18.*Not affected
  • 7.2.7 through 7.2.*Not affected
  • 7.3 and laterNot affected

References

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