PCI: endpoint: pci-epf-ntb: Remove duplicate resource teardown
In the Linux kernel, the following vulnerability has been resolved: PCI: endpoint: pci-epf-ntb: Remove duplicate resource teardown epf_ntb_epc_destroy() duplicates the teardown that the caller is supposed to do later. This leads to an oops when .allow_link fails or when .drop_link is performed. Remove the helper. Also drop pci_epc_put(). EPC device refcounting is tied to configfs EPC group lifetime, and pci_epc_put() in the .drop_link path is sufficient.
- Published
- May 27, 2026
- Updated
- Jun 17, 2026
- EPSS
- 0.2% · 5th percentile
- CWE
- —
Sign in to follow · You’ll be notified if a followed record enters KEV, gets an exploit or is updated.
Report tools
Action score
22
Monitor
Low priority for now.
- CVSS
- 22 / 40 · 5.5 / 10
- CISA KEV
- 0 / 30 · Not listed
- EPSS
- 0 / 30 · 0.2%
Affected systems
| Vendor | Product | CPE |
|---|---|---|
| linux | linux kernel | cpe:2.3:o:linux:linux_kernel |
Affected versions
NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.
- linux linux kernel5.12 and later · before 5.15.209
- linux linux kernel5.16 and later · before 6.1.175
- linux linux kernel6.2 and later · before 6.6.140
- linux linux kernel6.7 and later · before 6.12.86
- linux linux kernel6.13 and later · before 6.18.27
- linux linux kernel6.19 and later · before 7.0.4
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
- 5.12affected
- 8b821cf761503b80d0bd052f932adfe1bc1a0088 and later · before c3029721b84f59e790285ad27544ed5d3cb0f2a6affected · git
- 8b821cf761503b80d0bd052f932adfe1bc1a0088 and later · before c72f6a7ea638f95c486a5cfd86e567b646027687affected · git
- 8b821cf761503b80d0bd052f932adfe1bc1a0088 and later · before 72099f015d3c77bf2eb703d1aab113bd7a60915aaffected · git
- 8b821cf761503b80d0bd052f932adfe1bc1a0088 and later · before 756ca5e7ed22d9045bb4de4c981f9149278d5cd3affected · git
- 8b821cf761503b80d0bd052f932adfe1bc1a0088 and later · before 65fc57c8b8f0b31be62be291cb1bb01755cec85daffected · git
- 8b821cf761503b80d0bd052f932adfe1bc1a0088 and later · before e813c95e4c8edd31599081e6356e20ada30e266daffected · git
- 8b821cf761503b80d0bd052f932adfe1bc1a0088 and later · before 3446beddba450c8d6f9aca2f028712ac527fead3affected · git
- before 5.12not affected · semver
- 5.15.209 and later · up to and including 5.15.*not 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 6.1.176-1 | 6.1.176-1 |
| Debian:13 | linux | before 6.12.86-1 | 6.12.86-1 |
| Debian:14 | linux | before 7.0.4-1 | 7.0.4-1 |
Same product
linux: all recordsOther highest-scoring records for the same primary product.
- CVE-2022-0847A flaw was found in the way the "flags" member of the new pipe buffer structure was lacking proper initialization in copy_page_to_iter_pipe KEV89Now
- CVE-2021-22555Heap Out-Of-Bounds Write in Netfilter IP6T_SO_SET_REPLACEKEV85Now
- CVE-2016-5195Race condition in mm/gup.c in the Linux kernel 2.x through 4.x before 4.8.3 allows local users to gain privileges by leveraging incorrect haKEV83Now
- CVE-2019-13272In the Linux kernel before 5.1.17, ptrace_link in kernel/ptrace.c mishandles the recording of the credentials of a process that wants to creKEV77This week
- CVE-2013-6282The (1) get_user and (2) put_user API functions in the Linux kernel before 3.5.5 on the v6k and v7 ARM platforms do not validate certain addKEV77This week
- CVE-2013-2094The perf_swevent_init function in kernel/events/core.c in the Linux kernel before 3.8.9 uses an incorrect integer data type, which allows loKEV77This week
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 | 3446beddba450c8d6f9aca2f028712ac527fead3 | Vendor (CNA) |
| Linux Linux | 65fc57c8b8f0b31be62be291cb1bb01755cec85d | Vendor (CNA) |
| Linux Linux | 72099f015d3c77bf2eb703d1aab113bd7a60915a | Vendor (CNA) |
| Linux Linux | 756ca5e7ed22d9045bb4de4c981f9149278d5cd3 | Vendor (CNA) |
| Linux Linux | c3029721b84f59e790285ad27544ed5d3cb0f2a6 | Vendor (CNA) |
| Linux Linux | c72f6a7ea638f95c486a5cfd86e567b646027687 | Vendor (CNA) |
| Linux Linux | e813c95e4c8edd31599081e6356e20ada30e266d | Vendor (CNA) |
| debian:linux | 6.1.176-1 · Debian:12 | Package registry (OSV) |
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
Attack conditions
- Someone with local access to the system can trigger it.
- A low-privileged account is enough.
- No user action is required.
- No special conditions are required; it is repeatable.
If successful
- Confidentiality
- none
- Integrity
- none
- Availability
- high · the service can be disrupted
- Attack vector
- Local
- Attack complexity
- Low
- Privileges required
- Low
- User interaction
- None
- Scope
- Unchanged
- Confidentiality impact
- None
- Integrity impact
- None
- Availability impact
- High
Weakness class (CWE)
—
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
nvd-primary
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.
Noroxi analysis
No Noroxi analysis for this record yet
We don't hand-write analysis for all 385,000+ vulnerabilities; that wouldn't be honest. For notable, high-impact vulnerabilities our team writes the mechanism, detection and remediation steps.
We use this product, ask for helpChange log
- Fix✗ → ✓
For records you follow, these changes also arrive as notifications. →
References
- git.kernel.org/stable/c/3446beddba450c8d6f9aca2f028712ac527fead3
- git.kernel.org/stable/c/65fc57c8b8f0b31be62be291cb1bb01755cec85d
- git.kernel.org/stable/c/72099f015d3c77bf2eb703d1aab113bd7a60915a
- git.kernel.org/stable/c/756ca5e7ed22d9045bb4de4c981f9149278d5cd3
- git.kernel.org/stable/c/c3029721b84f59e790285ad27544ed5d3cb0f2a6
- git.kernel.org/stable/c/c72f6a7ea638f95c486a5cfd86e567b646027687
- git.kernel.org/stable/c/e813c95e4c8edd31599081e6356e20ada30e266d
Vendor advisories and official records. Exploit/PoC links are deliberately left out.