CVE-2026-31594
5.5 MEDIUMIn the Linux kernel, the following vulnerability has been resolved: PCI: endpoint: pci-epf-vntb: Remove duplicate resource teardown epf...
Published: 2026-04-24 · Last updated: 2026-06-01
Severity and scoring
- CVSS
- 5.5 MEDIUM
- Vector
- CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Affected products
| Vendor | Product |
|---|---|
| linux | linux_kernel |
Description
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: 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 [...] 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.
Source: NVD
References
- [NVD]https://nvd.nist.gov/vuln/detail/CVE-2026-31594
- [Patch]https://git.kernel.org/stable/c/0da63230d3ec1ec5fcc443a2314233e95bfece54
- [Other]https://git.kernel.org/stable/c/305a0674bc552bfcc3231e23fb91cf4f62aec168
- [Patch]https://git.kernel.org/stable/c/478e776101592eb63298714e96823ef78a3295ec
- [Patch]https://git.kernel.org/stable/c/73bf218de28d039126dc64281d2b47dd3c46a0a3
- [Patch]https://git.kernel.org/stable/c/a7a3cab4d33fd8a8aed864c447d0d7c99e85404e
- [Other]https://git.kernel.org/stable/c/b261027a1a235d8925e332363f23135a0eff2b35
- [Patch]https://git.kernel.org/stable/c/cec9ead73ab154a7953f6ab8dd5127e0d6bbf95a
- [Patch]https://git.kernel.org/stable/c/e238ab12556b00f3b4d8b870b32ba1e4f4d4ebc2
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