CVE-2026-97998
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
How to fix
- Linux Linuxc5c89beaa628d6ac527c6eb2e01b2b52eb417f59, 042465e7d3d3127e21f04e42c1639e2518b98915, 291685fc8d2e4cf75ed3a23c810883653f407f46, 3161186a2ff81288e9a5f35daf1911153764ecae, 0234d7ca0317be0a623300e1693cd794bbfdf8af, 1a7a8ac9a9f0ad0d410c901cb6f233833518844c, e2dd0f1f8c4e6334699ea6382e52f6da0c7e45eb, 387d744fa7e499d2c3748a4e60e02ebb24e7fb16 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| Linux Linux | 0597f2680d666a3bcf101ac0c771ba7e50016bbd ≤ v < c5c89beaa628d6ac527c6eb2e01b2b52eb417f59, 0597f2680d666a3bcf101ac0c771ba7e50016bbd ≤ v < 042465e7d3d3127e21f04e42c1639e2518b98915, 0597f2680d666a3bcf101ac0c771ba7e50016bbd ≤ v < 291685fc8d2e4cf75ed3a23c810883653f407f46, 0597f2680d666a3bcf101ac0c771ba7e50016bbd ≤ v < 3161186a2ff81288e9a5f35daf1911153764ecae, 0597f2680d666a3bcf101ac0c771ba7e50016bbd ≤ v < 0234d7ca0317be0a623300e1693cd794bbfdf8af, 0597f2680d666a3bcf101ac0c771ba7e50016bbd ≤ v < 1a7a8ac9a9f0ad0d410c901cb6f233833518844c, 0597f2680d666a3bcf101ac0c771ba7e50016bbd ≤ v < e2dd0f1f8c4e6334699ea6382e52f6da0c7e45eb, 0597f2680d666a3bcf101ac0c771ba7e50016bbd ≤ v < 387d744fa7e499d2c3748a4e60e02ebb24e7fb16, 2.6.14 | c5c89beaa628d6ac527c6eb2e01b2b52eb417f59, 042465e7d3d3127e21f04e42c1639e2518b98915, 291685fc8d2e4cf75ed3a23c810883653f407f46, 3161186a2ff81288e9a5f35daf1911153764ecae, 0234d7ca0317be0a623300e1693cd794bbfdf8af, 1a7a8ac9a9f0ad0d410c901cb6f233833518844c, e2dd0f1f8c4e6334699ea6382e52f6da0c7e45eb, 387d744fa7e499d2c3748a4e60e02ebb24e7fb16 |
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