CVE-2026-23399nf_tables: nft_dynset: fix possible stateful expression memleak in error path
- 5.5MediumCVSS base score
- 0.13%Exploitation in 30 daysEPSS · top 97% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
Description
In the Linux kernel, the following vulnerability has been resolved: nf_tables: nft_dynset: 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): pcpu_alloc_noprof+0x453/0xd80 nft_counter_clone+0x9c/0x190 [nf_tables] nft_expr_clone+0x8f/0x1b0 [nf_tables] nft_dynset_new+0x2cb/0x5f0 [nf_tables] nft_rhash_update+0x236/0x11c0 [nf_tables] nft_dynset_eval+0x11f/0x670 [nf_tables] nft_do_chain+0x253/0x1700 [nf_tables] nft_do_chain_ipv4+0x18d/0x270 [nf_tables] nf_hook_slow+0xaa/0x1e0 ip_local_deliver+0x209/0x330
Timeline
ID reserved
By Linux
- 2 months later
· 2 months later
Published
- 8 months later
· 8 months later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Modified | 3.1 | Medium5.5 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
- EPSS (exploitation in 30 days)
- 0.13% · top 97% of all CVEs (13 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: no · Technical impact: partial
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 5.5.
Affected products
- affected 563125a73ac30d7036ae69ca35c40500562c1de4 – < eb7bf413e59945df03d4567b73ce464eebe2f4ea
- affected 563125a73ac30d7036ae69ca35c40500562c1de4 – < 4357dbb1d9c35ca0b4443d71c98a48e6666f7689
- affected 563125a73ac30d7036ae69ca35c40500562c1de4 – < e6661add2d9c6913e1dad97336595e23a2bed195
- affected 563125a73ac30d7036ae69ca35c40500562c1de4 – < d1354873cbe3b344899c4311ac05897fd83e3f21
- affected 563125a73ac30d7036ae69ca35c40500562c1de4 – < 31641c682db73353e4647e40735c7f2a75ff58ef
- affected 563125a73ac30d7036ae69ca35c40500562c1de4 – < c88a9fd26cee365bec932196f76175772a941cca
- affected 563125a73ac30d7036ae69ca35c40500562c1de4 – < 0548a13b5a145b16e4da0628b5936baf35f51b43
- affected 5.11
- unaffected < 5.11
- unaffected 5.15.209 – ≤ 5.15.*
- unaffected 6.1.175 – ≤ 6.1.*
- unaffected 6.6.136 – ≤ 6.6.*
- unaffected 6.12.78 – ≤ 6.12.*
- unaffected 6.18.20 – ≤ 6.18.*
- unaffected 6.19.10 – ≤ 6.19.*
- unaffected 7.0 – ≤ *
References
References10
- https://git.kernel.org/stable/c/eb7bf413e59945df03d4567b73ce464eebe2f4ea (opens in a new tab)
- https://git.kernel.org/stable/c/4357dbb1d9c35ca0b4443d71c98a48e6666f7689 (opens in a new tab)
- https://git.kernel.org/stable/c/e6661add2d9c6913e1dad97336595e23a2bed195 (opens in a new tab)
- https://git.kernel.org/stable/c/d1354873cbe3b344899c4311ac05897fd83e3f21 (opens in a new tab)
- https://git.kernel.org/stable/c/31641c682db73353e4647e40735c7f2a75ff58ef (opens in a new tab)
- https://git.kernel.org/stable/c/c88a9fd26cee365bec932196f76175772a941cca (opens in a new tab)
- https://git.kernel.org/stable/c/0548a13b5a145b16e4da0628b5936baf35f51b43 (opens in a new tab)
- https://cert-portal.siemens.com/productcert/html/ssa-019113.html (opens in a new tab)
- https://cert-portal.siemens.com/productcert/html/ssa-457936.html (opens in a new tab)
- https://cert-portal.siemens.com/productcert/html/ssa-784472.html (opens in a new tab)
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2026-16909 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2026-23399)Record last updated .