PCI: endpoint: pci-epf-vntb: Remove duplicate resource teardown
Key facts
- Attack vector
- Local
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- None · None · High
- Fix status
- Fixed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA.
Summary
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.
Why it matters now
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Linux | Linux | 5.15.153 to before 5.15.209 | 5.15.209 | Patch available | CNA |
| Linux | Linux | 6.0 and later | 5.15.209, 6.1.175, 6.6.136, 6.12.84, 6.18.24, 6.19.14, 7.0.1, 7.1 | Patch available | CNA |
- Linux VendorLinux Affected 5.15.153 to before 5.15.209 Fixed in 5.15.209 Patch available CNA
- Linux VendorLinux Affected 6.0 and later Fixed in 5.15.209, 6.1.175, 6.6.136, 6.12.84, 6.18.24, 6.19.14, 7.0.1, 7.1 Patch available CNA
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | 6.0 to before 6.6.136; 6.7 to before 6.12.84; 6.13 to before 6.18.24; 6.19 to before 6.19.14; 7.0 to before 7.0.1 | Vulnerable | Linux |
- cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* Versions 6.0 to before 6.6.136; 6.7 to before 6.12.84; 6.13 to before 6.18.24; 6.19 to before 6.19.14; 7.0 to before 7.0.1 Vulnerable ·Linux
Remediation
- Fix · CNA Linux (Linux) Fixed in 5.15.209
- Fix · CNA Linux (Linux) Fixed in 5.15.209, 6.1.175, 6.6.136, 6.12.84, 6.18.24, 6.19.14, 7.0.1, 7.1
Vendor assessments
Red Hat
Red Hat rating: Moderate. Red Hat's page for this CVE →
Not affected: 5 products
- Red Hat Enterprise Linux 10
- Red Hat Enterprise Linux 6
- Red Hat Enterprise Linux 7
- Red Hat Enterprise Linux 8
- Red Hat Enterprise Linux 9
Timeline
- 2026-10-02 Threatist record created from CVE-2026-31594
- 2026-10-03 Alias added: GHSA-9mvc-6grp-8hgm
References
Patch 6
- https://git.kernel.org/stable/c/e238ab12556b00f3b4d8b870b32ba1e4f4d4ebc2
- https://git.kernel.org/stable/c/73bf218de28d039126dc64281d2b47dd3c46a0a3
- https://git.kernel.org/stable/c/cec9ead73ab154a7953f6ab8dd5127e0d6bbf95a
- https://git.kernel.org/stable/c/478e776101592eb63298714e96823ef78a3295ec
- https://git.kernel.org/stable/c/a7a3cab4d33fd8a8aed864c447d0d7c99e85404e
- https://git.kernel.org/stable/c/0da63230d3ec1ec5fcc443a2314233e95bfece54
More Linux Kernel vulnerabilities
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- TI-2026-38352 netfilter: bridge: make ebt_snat ARP rewrite writable KEVCVSS 3.1HIGH 8.8
- TI-2013-05264 The (1) get_user and (2) put_user API functions in the Linux kernel before 3.5.5 on the… KEVCVSS 3.1HIGH 8.8
- TI-2022-00125 Integer overflow in kernel KEVCVSS 3.1HIGH 8.4
- TI-2013-01864 The perf_swevent_init function in kernel/events/core.c in the Linux kernel before 3.8.9… KEVCVSS 3.1HIGH 8.4
- TI-2021-05514 Heap Out-Of-Bounds Write in Netfilter IP6T_SO_SET_REPLACE KEVCVSS 3.1HIGH 8.3
Sources
- CVE-2026-31594 · CVE Program
- CVE-2026-31594 · NVD
- FIRST EPSS
- GHSA-9mvc-6grp-8hgm · GitHub Advisory Database · CC BY 4.0
- CVE-2026-31594 · Red Hat security data · CC BY 4.0
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