PCI/IOV: Fix race between SR-IOV enable/disable and hotplug
In the Linux kernel, the following vulnerability has been resolved: PCI/IOV: Fix race between SR-IOV enable/disable and hotplug Commit 05703271c3cd ("PCI/IOV: Add PCI rescan-remove locking when enabling/disabling SR-IOV") tried to fix a race between the VF removal inside sriov_del_vfs() and concurrent hot unplug by taking the PCI rescan/remove lock in sriov_del_vfs(). Similarly the PCI rescan/remove lock was also taken in sriov_add_vfs() to protect addition of VFs. This approach however causes deadlock on trying to remove PFs with SR-IOV enabled because PFs disable SR-IOV during removal and this removal happens under the PCI rescan/remove lock. So the original fix had to be reverted. Instead of taking the PCI rescan/remove lock in sriov_add_vfs() and sriov_del_vfs(), fix the race that occurs with SR-IOV enable and disable vs hotplug higher up in the callchain by taking the lock in sriov_numvfs_store() before calling into the driver's sriov_configure() callback.
- Published
- Dec 4, 2025
- Updated
- Sep 8, 2026
- EPSS
- 0.2% · 12th percentile
- CWE
- —
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Report tools
Action score
0
Monitor
Low priority for now.
- CVSS
- 0 / 40 · —
- CISA KEV
- 0 / 30 · Not listed
- EPSS
- 0 / 30 · 0.2%
Noroxi analysis
No Noroxi analysis for this record yet
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We use this product, ask for helpAffected systems
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Versions reported by the vendor
Affected version ranges reported by the assigning authority (Linux). Independent of NVD's CPE analysis and usually ahead of it.
Linux Linux
- 5.0affected
- 18f9e9d150fccfa747875df6f0a9f606740762b3 and later · before 3cddde484471c602bea04e6f384819d336a1ff84affected · git
- 18f9e9d150fccfa747875df6f0a9f606740762b3 and later · before d7673ac466eca37ec3e6b7cc9ccdb06de3304e9baffected · git
- 18f9e9d150fccfa747875df6f0a9f606740762b3 and later · before 7c37920c96b85ef4255a7acc795e99e63dd38d59affected · git
- 18f9e9d150fccfa747875df6f0a9f606740762b3 and later · before 1047ca2d816994f31e1475e63e0c0b7825599747affected · git
- 18f9e9d150fccfa747875df6f0a9f606740762b3 and later · before 97c18f074ff1c12d016a0753072a3afdfa0b9611affected · git
- 18f9e9d150fccfa747875df6f0a9f606740762b3 and later · before bea1d373098b22d7142da48750ce5526096425bcaffected · git
- 18f9e9d150fccfa747875df6f0a9f606740762b3 and later · before f3015627b6e9ddf85cfeaf42405b3c194dde2c36affected · git
- 18f9e9d150fccfa747875df6f0a9f606740762b3 and later · before a5338e365c4559d7b4d7356116b0eb95b12e08d5affected · git
- before 5.0not affected · semver
Package-level exposure
OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.
| Ecosystem | Package | Affected range | Fix |
|---|---|---|---|
| Debian:12 | linux | before 6.1.170-1 | 6.1.170-1 |
| Debian:13 | linux | before 6.12.85-1 | 6.12.85-1 |
| Debian:14 | linux | before 6.19.6-1 | 6.19.6-1 |
| openSUSE:Leap 16.0 | dtb-aarch64 | before 6.12.0-160000.9.1 | 6.12.0-160000.9.1 |
| openSUSE:Leap 16.0 | kernel-64kb | before 6.12.0-160000.9.1 | 6.12.0-160000.9.1 |
| openSUSE:Leap 16.0 | kernel-azure | before 6.12.0-160000.9.1 | 6.12.0-160000.9.1 |
| openSUSE:Leap 16.0 | kernel-default | before 6.12.0-160000.9.1 | 6.12.0-160000.9.1 |
| openSUSE:Leap 16.0 | kernel-default-base | before 6.12.0-160000.9.1.160000.2.6 | 6.12.0-160000.9.1.160000.2.6 |
| openSUSE:Leap 16.0 | kernel-docs | before 6.12.0-160000.9.1 | 6.12.0-160000.9.1 |
| openSUSE:Leap 16.0 | kernel-kvmsmall | before 6.12.0-160000.9.1 | 6.12.0-160000.9.1 |
| openSUSE:Leap 16.0 | kernel-obs-build | before 6.12.0-160000.9.1 | 6.12.0-160000.9.1 |
| openSUSE:Leap 16.0 | kernel-obs-qa | before 6.12.0-160000.9.1 | 6.12.0-160000.9.1 |
| openSUSE:Leap 16.0 | kernel-rt | before 6.12.0-160000.9.1 | 6.12.0-160000.9.1 |
| openSUSE:Leap 16.0 | kernel-source | before 6.12.0-160000.9.1 | 6.12.0-160000.9.1 |
| openSUSE:Leap 16.0 | kernel-syms | before 6.12.0-160000.9.1 | 6.12.0-160000.9.1 |
| openSUSE:Leap 16.0 | kernel-zfcpdump | before 6.12.0-160000.9.1 | 6.12.0-160000.9.1 |
| SUSE:Linux Enterprise Live Patching 12 SP5 | kernel-default | before 4.12.14-122.296.1 | 4.12.14-122.296.1 |
| SUSE:Linux Enterprise Live Patching 12 SP5 | kgraft-patch-SLE12-SP5_Update_78 | before 1-8.3.1 | 1-8.3.1 |
| SUSE:Linux Enterprise Live Patching 15 SP7 | kernel-livepatch-SLE15-SP7_Update_15 | before 1-150700.15.3.1 | 1-150700.15.3.1 |
| SUSE:Linux Enterprise Module for Basesystem 15 SP7 | kernel-64kb | before 6.4.0-150700.53.55.1 | 6.4.0-150700.53.55.1 |
| SUSE:Linux Enterprise Module for Basesystem 15 SP7 | kernel-default | before 6.4.0-150700.53.55.1 | 6.4.0-150700.53.55.1 |
| SUSE:Linux Enterprise Module for Basesystem 15 SP7 | kernel-default-base | before 6.4.0-150700.53.55.1.150700.17.33.1 | 6.4.0-150700.53.55.1.150700.17.33.1 |
| SUSE:Linux Enterprise Module for Basesystem 15 SP7 | kernel-source | before 6.4.0-150700.53.55.1 | 6.4.0-150700.53.55.1 |
| SUSE:Linux Enterprise Module for Basesystem 15 SP7 | kernel-zfcpdump | before 6.4.0-150700.53.55.1 | 6.4.0-150700.53.55.1 |
+20
Same product
linux: all recordsOther highest-scoring records for the same primary product.
- CVE-2026-74705udp: fix potential use-after-free in tunnel segmentation40Plan
- CVE-2026-74612veth: fix skb length accounting after XDP frag adjustment40Plan
- CVE-2026-74475vxlan: use neigh_ha_snapshot() in route_shortcircuit()40Plan
- CVE-2026-74309vdpa/octeon_ep: fix IRQ-to-ring mapping in interrupt handler40Plan
- CVE-2026-74280crypto: marvell/octeontx - fix DMA cleanup using wrong loop index40Plan
- CVE-2026-74279crypto: cavium/cpt - fix DMA cleanup using wrong loop index40Plan
Remediation
Which version to upgrade to
Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.
| Product / package | Fixed version | Source |
|---|---|---|
| Linux Linux | 1047ca2d816994f31e1475e63e0c0b7825599747 | Vendor (CNA) |
| Linux Linux | 3cddde484471c602bea04e6f384819d336a1ff84 | Vendor (CNA) |
| Linux Linux | 7c37920c96b85ef4255a7acc795e99e63dd38d59 | Vendor (CNA) |
| Linux Linux | 97c18f074ff1c12d016a0753072a3afdfa0b9611 | Vendor (CNA) |
| Linux Linux | a5338e365c4559d7b4d7356116b0eb95b12e08d5 | Vendor (CNA) |
| Linux Linux | bea1d373098b22d7142da48750ce5526096425bc | Vendor (CNA) |
| Linux Linux | d7673ac466eca37ec3e6b7cc9ccdb06de3304e9b | Vendor (CNA) |
| Linux Linux | f3015627b6e9ddf85cfeaf42405b3c194dde2c36 | Vendor (CNA) |
| debian:linux | 6.1.170-1 · Debian:12 | Package registry (OSV) |
| opensuse:dtb-aarch64 | 6.12.0-160000.9.1 · openSUSE:Leap 16.0 | Package registry (OSV) |
| opensuse:kernel-64kb | 6.12.0-160000.9.1 · openSUSE:Leap 16.0 | Package registry (OSV) |
| opensuse:kernel-azure | 6.12.0-160000.9.1 · openSUSE:Leap 16.0 | Package registry (OSV) |
| opensuse:kernel-default | 6.12.0-160000.9.1 · openSUSE:Leap 16.0 | Package registry (OSV) |
| opensuse:kernel-default-base | 6.12.0-160000.9.1.160000.2.6 · openSUSE:Leap 16.0 | Package registry (OSV) |
| opensuse:kernel-docs | 6.12.0-160000.9.1 · openSUSE:Leap 16.0 | Package registry (OSV) |
| opensuse:kernel-kvmsmall | 6.12.0-160000.9.1 · openSUSE:Leap 16.0 | Package registry (OSV) |
| opensuse:kernel-obs-build | 6.12.0-160000.9.1 · openSUSE:Leap 16.0 | Package registry (OSV) |
| opensuse:kernel-obs-qa | 6.12.0-160000.9.1 · openSUSE:Leap 16.0 | Package registry (OSV) |
| opensuse:kernel-rt | 6.12.0-160000.9.1 · openSUSE:Leap 16.0 | Package registry (OSV) |
| opensuse:kernel-source | 6.12.0-160000.9.1 · openSUSE:Leap 16.0 | Package registry (OSV) |
| opensuse:kernel-syms | 6.12.0-160000.9.1 · openSUSE:Leap 16.0 | Package registry (OSV) |
| suse:kernel-64kb | 6.12.0-160000.9.1 · SUSE:Linux Micro 6.2 | Package registry (OSV) |
| suse:kernel-azure | 6.12.0-160000.9.1 · SUSE:Linux Enterprise Server 16.0 | Package registry (OSV) |
| suse:kernel-default | 4.12.14-122.296.1 · SUSE:Linux Enterprise Live Patching 12 SP5 | Package registry (OSV) |
| suse:kernel-default-base | 6.12.0-160000.9.1.160000.2.6 · SUSE:Linux Micro 6.2 | Package registry (OSV) |
| suse:kernel-docs | 6.12.0-160000.9.1 · SUSE:Linux Enterprise Server 16.0 | Package registry (OSV) |
| suse:kernel-kvmsmall | 6.12.0-160000.9.1 · SUSE:Linux Enterprise Server 16.0 | Package registry (OSV) |
| suse:kernel-obs-qa | 6.12.0-160000.9.1 · SUSE:Linux Enterprise Server 16.0 | Package registry (OSV) |
| suse:kernel-rt | 6.12.0-160000.9.1 · SUSE:Linux Micro 6.2 | Package registry (OSV) |
| suse:kernel-source | 4.12.14-122.296.1 · SUSE:Linux Enterprise Server 12 SP5-LTSS | Package registry (OSV) |
+3
Exploit status
No known public exploit
No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.
Research context
For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.
Timeline
From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.
No dated events beyond publication.
FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).
Patch and commit links
Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.
No commit or PR link among the references.
Credits
All researchersFinders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.
No credits in the CNA record.
Variant candidates
Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.
No nightly-computed relations.
Chain candidates
An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.
—
Bug bounty scope
No known public program.
Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).
Technical details
No CVSS vector for this record, so attack conditions can't be derived.
Weakness class (CWE)
—
Attack context
MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.
MITRE has no CAPEC/ATT&CK mapping for this CWE.
Change log
- Fix✗ → ✓
For records you follow, these changes also arrive as notifications. →
References
- git.kernel.org/stable/c/1047ca2d816994f31e1475e63e0c0b7825599747
- git.kernel.org/stable/c/3cddde484471c602bea04e6f384819d336a1ff84
- git.kernel.org/stable/c/7c37920c96b85ef4255a7acc795e99e63dd38d59
- git.kernel.org/stable/c/97c18f074ff1c12d016a0753072a3afdfa0b9611
- git.kernel.org/stable/c/a5338e365c4559d7b4d7356116b0eb95b12e08d5
- git.kernel.org/stable/c/bea1d373098b22d7142da48750ce5526096425bc
- git.kernel.org/stable/c/d7673ac466eca37ec3e6b7cc9ccdb06de3304e9b
- git.kernel.org/stable/c/f3015627b6e9ddf85cfeaf42405b3c194dde2c36
- cert-portal.siemens.com/productcert/html/ssa-019113.html
- cert-portal.siemens.com/productcert/html/ssa-082556.html
Vendor advisories and official records. Exploit/PoC links are deliberately left out.