CVE-2026-23399nf_tables: nft_dynset: fix possible stateful expression memleak in error path
Updated under an hour ago ()
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No exploitation reported and no EPSS estimate yet.
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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
- CVSS
- 5.5 MEDIUM (v3.1, NVD)CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- Weakness (CWE)
- Not given
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Linux
- NVD analysis
- Modified
- Record last updated
- Oct 15, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Linux Linux linux:linux (from the name) | from 563125a73ac30d7036ae69ca35c40500562c1de4 before eb7bf413e59945df03d4567b73ce464eebe2f4ea; 563125a73ac30d7036ae69ca35c40500562c1de4 builds before 4357dbb1d9c35ca0b4443d71c98a48e6666f7689; from 563125a73ac30d7036ae69ca35c40500562c1de4 before e6661add2d9c6913e1dad97336595e23a2bed195; from 563125a73ac30d7036ae69ca35c40500562c1de4 before d1354873cbe3b344899c4311ac05897fd83e3f21; 563125a73ac30d7036ae69ca35c40500562c1de4 builds before 31641c682db73353e4647e40735c7f2a75ff58ef; from 563125a73ac30d7036ae69ca35c40500562c1de4 before c88a9fd26cee365bec932196f76175772a941cca; 563125a73ac30d7036ae69ca35c40500562c1de4 builds before 0548a13b5a145b16e4da0628b5936baf35f51b43 | CNA record |
Siemens SIMATIC S7-1500 CPU 1518-4 PN/DP MFP siemens:simatic_s7_1500_cpu_1518_4_pn_dp_mfp (from the name) | from V3.1.6 | CISA ADP |
Siemens SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP siemens:simatic_s7_1500_cpu_1518f_4_pn_dp_mfp (from the name) | from V3.1.6 | CISA ADP |
Siemens SIMATIC S7-1500 TM MFP - GNU/Linux subsystem siemens:simatic_s7_1500_tm_mfp_gnu_linux_subsystem (from the name) | all versions | CISA ADP |
Siemens SIPLUS S7-1500 CPU 1518-4 PN/DP MFP siemens:siplus_s7_1500_cpu_1518_4_pn_dp_mfp (from the name) | from V3.1.6 | CISA ADP |
linux linux_kernel linux:linux_kernel | from 5.11.1 before 6.12.78; from 6.13 before 6.18.20; from 6.19 before 6.19.10; 5.11; 7.0; 7.0; 7.0; 7.0; and 3 more ranges | NVD |
References
- https://git.kernel.org/stable/c/eb7bf413e59945df03d4567b73ce464eebe2f4ea
- https://git.kernel.org/stable/c/4357dbb1d9c35ca0b4443d71c98a48e6666f7689
- https://git.kernel.org/stable/c/e6661add2d9c6913e1dad97336595e23a2bed195
- https://git.kernel.org/stable/c/d1354873cbe3b344899c4311ac05897fd83e3f21patch
- https://git.kernel.org/stable/c/31641c682db73353e4647e40735c7f2a75ff58efpatch
- https://git.kernel.org/stable/c/c88a9fd26cee365bec932196f76175772a941ccapatch
- https://git.kernel.org/stable/c/0548a13b5a145b16e4da0628b5936baf35f51b43patch
- https://cert-portal.siemens.com/productcert/html/ssa-019113.html
- https://cert-portal.siemens.com/productcert/html/ssa-457936.html
- https://cert-portal.siemens.com/productcert/html/ssa-784472.html
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.