CVE-2026-23399

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Source
https://cve.org/CVERecord?id=CVE-2026-23399
Import Source
https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-23399.json
JSON Data
https://api.test.osv.dev/v1/vulns/CVE-2026-23399
Downstream
Published
2026-03-28T07:16:09.888Z
Modified
2026-05-15T11:54:35.058520609Z
Summary
nf_tables: nft_dynset: fix possible stateful expression memleak in error path
Details

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

nftables: nftdynset: fix possible stateful expression memleak in error path

If cloning the second stateful expression in the element via GFP_ATOMIC fails, then the first stateful expression remains in place without being released.

  unreferenced object (percpu) 0x607b97e9cab8 (size 16):     comm "softirq", pid 0, jiffies 4294931867     hex dump (first 16 bytes on cpu 3):       00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00     backtrace (crc 0):       pcpuallocnoprof+0x453/0xd80       nftcounterclone+0x9c/0x190 [nftables]       nftexprclone+0x8f/0x1b0 [nftables]       nftdynsetnew+0x2cb/0x5f0 [nftables]       nftrhashupdate+0x236/0x11c0 [nftables]       nftdynseteval+0x11f/0x670 [nftables]       nftdochain+0x253/0x1700 [nftables]       nftdochainipv4+0x18d/0x270 [nftables]       nfhookslow+0xaa/0x1e0       iplocaldeliver+0x209/0x330

Database specific 
{
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/23xxx/CVE-2026-23399.json"
}
References

Affected packages

Linux / Kernel

Package

Name
Kernel

Affected ranges

Type
ECOSYSTEM
Events
Introduced
5.11.0
Fixed
6.6.136
Type
ECOSYSTEM
Events
Introduced
6.7.0
Fixed
6.12.78
Type
ECOSYSTEM
Events
Introduced
6.13.0
Fixed
6.18.20
Type
ECOSYSTEM
Events
Introduced
6.19.0
Fixed
6.19.10

Database specific

source 
"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-23399.json"