CVE-2026-23399
Estado: ModificadaMedia (5.5)—
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.
Detalles técnicos trazas, registros y código del informe original
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
- Versión: 3.1
- Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- Puntuación base: 5.5
Probabilidad de explotación (EPSS)
- Probabilidad de explotación en los próximos 30 días: 0.12%
- Percentil entre todas las CVEs puntuadas: 2
- Fecha de la puntuación: 5/10/2026
EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).
Tecnologías afectadas (1)
CWE
- CWE-401
Referencias
- https://git.kernel.org/stable/c/0548a13b5a145b16e4da0628b5936baf35f51b43
- https://git.kernel.org/stable/c/31641c682db73353e4647e40735c7f2a75ff58ef
- https://git.kernel.org/stable/c/4357dbb1d9c35ca0b4443d71c98a48e6666f7689
- https://git.kernel.org/stable/c/c88a9fd26cee365bec932196f76175772a941cca
- https://git.kernel.org/stable/c/d1354873cbe3b344899c4311ac05897fd83e3f21
- https://git.kernel.org/stable/c/e6661add2d9c6913e1dad97336595e23a2bed195
- https://git.kernel.org/stable/c/eb7bf413e59945df03d4567b73ce464eebe2f4ea
- https://cert-portal.siemens.com/productcert/html/ssa-019113.html
JSON original (NVD)
Mostrar
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"description": [
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"descriptions": [
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"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnf_tables: nft_dynset: fix possible stateful expression memleak in error path\n\nIf cloning the second stateful expression in the element via GFP_ATOMIC\nfails, then the first stateful expression remains in place without being\nreleased.\n\n unreferenced object (percpu) 0x607b97e9cab8 (size 16):\n comm \"softirq\", pid 0, jiffies 4294931867\n hex dump (first 16 bytes on cpu 3):\n 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00\n backtrace (crc 0):\n pcpu_alloc_noprof+0x453/0xd80\n nft_counter_clone+0x9c/0x190 [nf_tables]\n nft_expr_clone+0x8f/0x1b0 [nf_tables]\n nft_dynset_new+0x2cb/0x5f0 [nf_tables]\n nft_rhash_update+0x236/0x11c0 [nf_tables]\n nft_dynset_eval+0x11f/0x670 [nf_tables]\n nft_do_chain+0x253/0x1700 [nf_tables]\n nft_do_chain_ipv4+0x18d/0x270 [nf_tables]\n nf_hook_slow+0xaa/0x1e0\n ip_local_deliver+0x209/0x330"
},
{
"lang": "es",
"value": "En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta:\n\nnf_tables: nft_dynset: corregir posible fuga de memoria de expresión con estado en la ruta de error\n\nSi la clonación de la segunda expresión con estado en el elemento a través de GFP_ATOMIC falla, entonces la primera expresión con estado permanece en su lugar sin ser liberada.\n\n   objeto sin referencia (por CPU) 0x607b97e9cab8 (tamaño 16):\n     comm 'softirq', pid 0, jiffies 4294931867\n     volcado hexadecimal (primeros 16 bytes en la CPU 3):\n       00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00\n     rastreo de pila (crc 0):\n       pcpu_alloc_noprof+0x453/0xd80\n       nft_counter_clone+0x9c/0x190 [nf_tables]\n       nft_expr_clone+0x8f/0x1b0 [nf_tables]\n       nft_dynset_new+0x2cb/0x5f0 [nf_tables]\n       nft_rhash_update+0x236/0x11c0 [nf_tables]\n       nft_dynset_eval+0x11f/0x670 [nf_tables]\n       nft_do_chain+0x253/0x1700 [nf_tables]\n       nft_do_chain_ipv4+0x18d/0x270 [nf_tables]\n       nf_hook_slow+0xaa/0x1e0\n       ip_local_deliver+0x209/0x330"
}
],
"lastModified": "2026-09-08T09:17:49.613",
"configurations": [
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