CVE-2026-43200

  1. OpenCVE
  2. Vulnerabilities (CVE)
  3. CVE-2026-43200
In the Linux kernel, the following vulnerability has been resolved: PCI: endpoint: Fix swapped parameters in pci_{primary/secondary}_epc_epf_unlink() functions struct configfs_item_operations callbacks are defined like the following: int (*allow_link)(struct config_item *src, struct config_item *target); void (*drop_link)(struct config_item *src, struct config_item *target); While pci_primary_epc_epf_link() and pci_secondary_epc_epf_link() specify the parameters in the correct order, pci_primary_epc_epf_unlink() and pci_secondary_epc_epf_unlink() specify the parameters in the wrong order, leading to the below kernel crash when using the unlink command in configfs: Unable to handle kernel paging request at virtual address 0000000300000857 Mem abort info: ... pc : string+0x54/0x14c lr : vsnprintf+0x280/0x6e8 ... string+0x54/0x14c vsnprintf+0x280/0x6e8 vprintk_default+0x38/0x4c vprintk+0xc4/0xe0 pci_epf_unbind+0xdc/0x108 configfs_unlink+0xe0/0x208+0x44/0x74 vfs_unlink+0x120/0x29c __arm64_sys_unlinkat+0x3c/0x90 invoke_syscall+0x48/0x134 do_el0_svc+0x1c/0x30prop.0+0xd0/0xf0 [mani: cced stable, changed commit message as per https://lore.kernel.org/linux-pci/aV9joi3jF1R6ca02@ryzen]

5.5 /10

CVSS v3 : MEDIUM

V3 Legend

Vector :

Exploitability : 1.8 / Impact : 3.6

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References
Link Resource
https://git.kernel.org/stable/c/142b1bba3299264b76ed8ef53cd93b2b2af65d6c Patch
https://git.kernel.org/stable/c/1c96c1acef4b4a1108fc13f84a8ac0b0633bbb46 Patch
https://git.kernel.org/stable/c/339191811e6fc4559c4008c5af7a91b05086d596 Patch
https://git.kernel.org/stable/c/58686bf62cb38b92e4b28408162a5703775b4d12 Patch
https://git.kernel.org/stable/c/733cbc3aa97e71cc70847e75c925b364cc9b04a6 Patch
https://git.kernel.org/stable/c/8754dd7639ab0fd68c3ab9d91c7bdecc3e5740a8 Patch
https://git.kernel.org/stable/c/aefc0e0bd20f54abe3b501b8798c0be656af272b Patch
Configurations

Configuration 1 (hide)

OR cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
History

11 Nov 2026, 20:10

Type Values Removed Values Added
Summary
  • (es) En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta: PCI: endpoint: Corrección de parámetros intercambiados en las funciones pci_{primary/secondary}_epc_epf_unlink() Las devoluciones de llamada de struct configfs_item_operations se definen de la siguiente manera: int (allow_link)(struct config_item src, struct config_item target); void (drop_link)(struct config_item src, struct config_item target); Mientras que pci_primary_epc_epf_link() y pci_secondary_epc_epf_link() especifican los parámetros en el orden correcto, pci_primary_epc_epf_unlink() y pci_secondary_epc_epf_unlink() especifican los parámetros en el orden incorrecto, lo que lleva al siguiente fallo del kernel al usar el comando unlink en configfs: No se puede manejar la solicitud de paginación del kernel en la dirección virtual 0000000300000857 Información de aborto de memoria: ... pc : string+0x54/0x14c lr : vsnprintf+0x280/0x6e8 ... string+0x54/0x14c vsnprintf+0x280/0x6e8 vprintk_default+0x38/0x4c vprintk+0xc4/0xe0 pci_epf_unbind+0xdc/0x108 configfs_unlink+0xe0/0x208+0x44/0x74 vfs_unlink+0x120/0x29c __arm64_sys_unlinkat+0x3c/0x90 invoke_syscall+0x48/0x134 do_el0_svc+0x1c/0x30prop.0+0xd0/0xf0 [mani: con copia a stable, se cambió el mensaje de commit según https://lore.kernel.org/linux-pci/aV9joi3jF1R6ca02@ryzen]
Information

Published : 2026-05-06 12:16

Updated : 2026-11-11 20:10

NVD link : CVE-2026-43200

Mitre link : CVE-2026-43200

CVE.ORG link : CVE-2026-43200

JSON object : View

Products Affected

linux

  • linux_kernel
CWE
NVD-CWE-noinfo