CVE-2026-31594
Estado: ModificadaMedia (5.5)—
In the Linux kernel, the following vulnerability has been resolved:
PCI: endpoint: pci-epf-vntb: Remove duplicate resource teardown
epf_ntb_epc_destroy() duplicates the teardown that the caller is supposed to perform later. This leads to an oops when .allow_link fails or when .drop_link is performed. The following is an example oops of the former case:
Remove the helper, and drop pci_epc_put(). EPC device refcounting is tied to the configfs EPC group lifetime, and pci_epc_put() in the .drop_link path is sufficient.
Detalles técnicos trazas, registros y código del informe original
Unable to handle kernel paging request at virtual address dead000000000108 [...] [dead000000000108] address between user and kernel address ranges Internal error: Oops: 0000000096000044 [#1] SMP [...] Call trace: pci_epc_remove_epf+0x78/0xe0 (P) pci_primary_epc_epf_link+0x88/0xa8 configfs_symlink+0x1f4/0x5a0 vfs_symlink+0x134/0x1d8 do_symlinkat+0x88/0x138 __arm64_sys_symlinkat+0x74/0xe0 [...]
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: 0.16%
- Percentil entre todas las CVEs puntuadas: 5
- Fecha de la puntuación: 6/10/2026
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
- NVD-CWE-noinfo
Referencias
- https://git.kernel.org/stable/c/0da63230d3ec1ec5fcc443a2314233e95bfece54
- https://git.kernel.org/stable/c/305a0674bc552bfcc3231e23fb91cf4f62aec168
- https://git.kernel.org/stable/c/478e776101592eb63298714e96823ef78a3295ec
- https://git.kernel.org/stable/c/73bf218de28d039126dc64281d2b47dd3c46a0a3
- https://git.kernel.org/stable/c/a7a3cab4d33fd8a8aed864c447d0d7c99e85404e
- https://git.kernel.org/stable/c/b261027a1a235d8925e332363f23135a0eff2b35
- https://git.kernel.org/stable/c/cec9ead73ab154a7953f6ab8dd5127e0d6bbf95a
- https://git.kernel.org/stable/c/e238ab12556b00f3b4d8b870b32ba1e4f4d4ebc2
JSON original (NVD)
Mostrar
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"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nPCI: endpoint: pci-epf-vntb: Remove duplicate resource teardown\n\nepf_ntb_epc_destroy() duplicates the teardown that the caller is\nsupposed to perform later. This leads to an oops when .allow_link fails\nor when .drop_link is performed. The following is an example oops of the\nformer case:\n\n Unable to handle kernel paging request at virtual address dead000000000108\n [...]\n [dead000000000108] address between user and kernel address ranges\n Internal error: Oops: 0000000096000044 [#1] SMP\n [...]\n Call trace:\n pci_epc_remove_epf+0x78/0xe0 (P)\n pci_primary_epc_epf_link+0x88/0xa8\n configfs_symlink+0x1f4/0x5a0\n vfs_symlink+0x134/0x1d8\n do_symlinkat+0x88/0x138\n __arm64_sys_symlinkat+0x74/0xe0\n [...]\n\nRemove the helper, and drop pci_epc_put(). EPC device refcounting is\ntied to the configfs EPC group lifetime, and pci_epc_put() in the\n.drop_link path is sufficient."
}
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