CVE-2026-43200

MEDIUM EPSS 2.4%
Published May 6, 20261mo ago · Modified Jun 17, 20261w ago
5.5 CVSS 3.1
Medium
Find Similar
Published May 6, 2026 1mo ago
Last Modified Jun 17, 2026 1w ago

Description

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]

CVSS Details

Base Score
5.5
Exploitability
1.8
Impact
3.6
Vector string
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Attack Vector Local
Attack Complexity Low
Privileges Required Low
User Interaction None
Scope Unchanged
Confidentiality None
Integrity None
Availability High

Threat Intelligence

EPSS Exploit Probability
2.4% percentile
Exploit & Patch Status
No Known Exploit
Patch Available

Affected Products 6

VendorProductVersionRange
linuxlinux_kernel*≥5.12  –  <5.15.202
linuxlinux_kernel*≥5.16  –  <6.1.165
linuxlinux_kernel*≥6.2  –  <6.6.128
linuxlinux_kernel*≥6.7  –  <6.12.75
linuxlinux_kernel*≥6.13  –  <6.18.16
linuxlinux_kernel*≥6.19  –  <6.19.6

References 7

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

Remediation

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