CVE-2023-53566
Estado: ModificadaMedia (5.5)—
In the Linux kernel, the following vulnerability has been resolved:
netfilter: nft_set_rbtree: fix null deref on element insertion
There is no guarantee that rb_prev() will not return NULL in nft_rbtree_gc_elem():
Furthermore, there is a possible use-after-free while iterating, 'node' can be free'd so we need to cache the next value to use.
Detalles técnicos trazas, registros y código del informe original
general protection fault, probably for non-canonical address 0xdffffc0000000003: 0000 [#1] PREEMPT SMP KASAN KASAN: null-ptr-deref in range [0x0000000000000018-0x000000000000001f] nft_add_set_elem+0x14b0/0x2990 nf_tables_newsetelem+0x528/0xb30
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: 0.15%
- Percentil entre todas las CVEs puntuadas: 4
- 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-476
Referencias
- https://git.kernel.org/stable/c/3fa13203b6d90cc3a33af47b058739f92ab82eef
- https://git.kernel.org/stable/c/61ae320a29b0540c16931816299eb86bf2b66c08
- https://git.kernel.org/stable/c/899aa5638568abf5d69de7a7bb95e4615157375b
- https://git.kernel.org/stable/c/a337706c1fb35aac3f26b48aca80421bdbe1d33a
- https://git.kernel.org/stable/c/a836be60a3aabcedcd9c79f545d409ace1f20ba6
- https://git.kernel.org/stable/c/b76db53ee8802ee5683f8cb401d7e2ec6f9b3d56
- https://git.kernel.org/stable/c/ec5caa765f7f6960011c919c9aeb1467940421f6
JSON original (NVD)
Mostrar
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