PCI: endpoint: Fix swapped parameters in pci_{primary/secondary}_epc_epf_unlink() functions (Linux Linux)

CVE-2026-43200
MEDIUM 5.5

At a glance

Source
NVD
EPSS
EPSS 0.12 % · percentile 2 ()
State
PUBLISHED
Published
Updated
Assigner
Linux
NVD status
Analyzed

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]

References

Scores

VersionScoreVectorScored by
CVSS 3.1MEDIUM 5.5CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:HNVD · nvd@nist.gov (Primary)

European references

CERT-FR advisories

Affected configurations (NVD CPE)

Affected products

ProductVersions
Linux · Linuxaffected e85a2d7837622bd99c96f5bbc7f972da90c285a2 < 58686bf62cb38b92e4b28408162a5703775b4d12 ; affected e85a2d7837622bd99c96f5bbc7f972da90c285a2 < 1c96c1acef4b4a1108fc13f84a8ac0b0633bbb46 ; affected e85a2d7837622bd99c96f5bbc7f972da90c285a2 < 142b1bba3299264b76ed8ef53cd93b2b2af65d6c ; affected e85a2d7837622bd99c96f5bbc7f972da90c285a2 < 339191811e6fc4559c4008c5af7a91b05086d596 ; affected e85a2d7837622bd99c96f5bbc7f972da90c285a2 < 733cbc3aa97e71cc70847e75c925b364cc9b04a6 ; affected e85a2d7837622bd99c96f5bbc7f972da90c285a2 < aefc0e0bd20f54abe3b501b8798c0be656af272b
Linux · Linuxaffected 5.12 ; unaffected 0 < 5.12 ; unaffected 5.15.202 ≤ 5.15.* ; unaffected 6.1.165 ≤ 6.1.* ; unaffected 6.6.128 ≤ 6.6.* ; unaffected 6.12.75 ≤ 6.12.*

Sources

SourceLicence
CVE List (CVEProject cvelistV5)CVE Program Terms of Use
EPSS (FIRST.org)FIRST — attribution requested
ENISA EUVDENISA — reproduction authorised, source acknowledged
CERT-FR (ANSSI)Licence Ouverte / Etalab 2.0
NVD (NIST) via fkie-cad/nvd-json-data-feedsPublic domain — this product uses data from the NVD API but is not endorsed or certified by the NVD