tun: free page on short-frame rejection in tun_xdp_one()
In the Linux kernel, the following vulnerability has been resolved: tun: free page on short-frame rejection in tun_xdp_one() tun_xdp_one() returns -EINVAL on a frame shorter than ETH_HLEN without freeing the page that vhost_net_build_xdp() allocated for it. tun_sendmsg() discards that -EINVAL and still returns total_len, so vhost_tx_batch() takes the success path and never frees the page; each short frame in a batch leaks one page-frag chunk. A local process that can open /dev/net/tun and /dev/vhost-net can hit this path: it attaches a tun/tap device as the vhost-net backend and feeds TX descriptors whose length minus the virtio-net header is below ETH_HLEN. Each kick leaks the page-frag chunks for that batch, and a tight submission loop exhausts host memory and triggers an OOM panic. Free the page before returning -EINVAL, matching the XDP-program error path in the same function.
- Published
- Jun 9, 2026
- Updated
- Aug 5, 2026
- EPSS
- 0.2% · 8th percentile
- CWE
- —
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Report tools
Action score
28
Monitor
Low priority for now.
- CVSS
- 28 / 40 · 7.1 / 10
- CISA KEV
- 0 / 30 · Not listed
- EPSS
- 0 / 30 · 0.2%
CNA vs NVD score
- NVD
- —
- CNA · Linux
- 7.1
- NVD has not scored this yet; the score shown is the CNA’s.
The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.
Noroxi analysis
No Noroxi analysis for this record yet
We don't hand-write analysis for the hundreds of thousands of vulnerabilities in the database; 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 helpAffected 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 kernel5.4.281 and later · before 5.5
- linux linux kernel5.10.223 and later · before 5.10.259
- linux linux kernel5.15.164 and later · before 5.15.210
- linux linux kernel6.1.102 and later · before 6.1.176
- linux linux kernel6.6.43 and later · before 6.6.143
- linux linux kernel6.9.12 and later · before 6.10
- linux linux kernel6.10.2 and later · before 6.12.93
- linux linux kernel6.13 and later · before 6.18.35
- linux linux kernel6.19 and later · before 7.0.12
- linux linux kernel7.1
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
- 32b0aaba5dbc85816898167d9b5d45a22eae82e9, a9d1c27e2ee3b0ea5d40c105d6e728fc114470bb, 8418f55302fa1d2eeb73e16e345167e545c598a5, 6.11affected
- 6100e0237204890269e3f934acfc50d35fd6f319 and later · before 0a6f46a9332ad6958992d64d3b3a81a80b2ca940affected · git
- 589382f50b4a5d90d16d8bc9dcbc0e927a3e39b2 and later · before 0e8211fcf9426f5adddf32516ba0f400ceb9544daffected · git
- ad6b3f622ccfb4bfedfa53b6ebd91c3d1d04f146 and later · before e915445942af6dcea628bf66d6241641201a0c41affected · git
- d5ad89b7d01ed4e66fd04734fc63d6e78536692a and later · before 5b34f9e4fe2f203724a6e893d6df0316b9670057affected · git
- 049584807f1d797fc3078b68035450a9769eb5c3 and later · before 69863ff2720a0e9871f1a5710f2a33a94217fee0affected · git
- 049584807f1d797fc3078b68035450a9769eb5c3 and later · before 37a1c268c2c8090bf4dc552d732bd23ba36f8eb0affected · git
- 049584807f1d797fc3078b68035450a9769eb5c3 and later · before 98c67be9eb9de72465a071949e84a3cdb8fab5a3affected · git
- 049584807f1d797fc3078b68035450a9769eb5c3 and later · before f4feb1e20058e407cb00f45aff47f5b7e19a6bbfaffected · git
- 5.10.223 and later · before 5.10.259affected · 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 6.12.94-1 | 6.12.94-1 |
| Debian:14 | linux | before 7.0.12-1 | 7.0.12-1 |
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 | 0a6f46a9332ad6958992d64d3b3a81a80b2ca940 | Vendor (CNA) |
| Linux Linux | 0e8211fcf9426f5adddf32516ba0f400ceb9544d | Vendor (CNA) |
| Linux Linux | 37a1c268c2c8090bf4dc552d732bd23ba36f8eb0 | Vendor (CNA) |
| Linux Linux | 5.10.259 | Vendor (CNA) |
| Linux Linux | 5.15.210 | Vendor (CNA) |
| Linux Linux | 5.5 | Vendor (CNA) |
| Linux Linux | 5b34f9e4fe2f203724a6e893d6df0316b9670057 | Vendor (CNA) |
| Linux Linux | 6.1.176 | Vendor (CNA) |
| Linux Linux | 6.10 | Vendor (CNA) |
| Linux Linux | 6.11 | Vendor (CNA) |
| Linux Linux | 6.6.143 | Vendor (CNA) |
| Linux Linux | 69863ff2720a0e9871f1a5710f2a33a94217fee0 | Vendor (CNA) |
| Linux Linux | 98c67be9eb9de72465a071949e84a3cdb8fab5a3 | Vendor (CNA) |
| Linux Linux | e915445942af6dcea628bf66d6241641201a0c41 | Vendor (CNA) |
| Linux Linux | f4feb1e20058e407cb00f45aff47f5b7e19a6bbf | 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).
National notice (Türkiye Cybersecurity Directorate / USOM)
Official security notices citing this record; remediation advice is on the agency's page.
- TR-26-0352 · Jun 10, 2026(Linux Kernel Güvenlik Bildirimi)
Technical details
Attack conditions
- Someone with local access to the system can trigger it.
- No account or password is required.
- 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
Impact can extend beyond the vulnerable component (scope changes).
- Attack vector
- Local
- Attack complexity
- Low
- Privileges required
- None
- User interaction
- None
- Scope
- Changed
- Confidentiality impact
- None
- Integrity impact
- None
- Availability impact
- High
Weakness class (CWE)
—
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
nvd-secondary
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/0a6f46a9332ad6958992d64d3b3a81a80b2ca940
- git.kernel.org/stable/c/0e8211fcf9426f5adddf32516ba0f400ceb9544d
- git.kernel.org/stable/c/37a1c268c2c8090bf4dc552d732bd23ba36f8eb0
- git.kernel.org/stable/c/5b34f9e4fe2f203724a6e893d6df0316b9670057
- git.kernel.org/stable/c/69863ff2720a0e9871f1a5710f2a33a94217fee0
- git.kernel.org/stable/c/98c67be9eb9de72465a071949e84a3cdb8fab5a3
- git.kernel.org/stable/c/e915445942af6dcea628bf66d6241641201a0c41
- git.kernel.org/stable/c/f4feb1e20058e407cb00f45aff47f5b7e19a6bbf
Vendor advisories and official records. Exploit/PoC links are deliberately left out.