bpf: Reject fragmented frames in devmap
In the Linux kernel, the following vulnerability has been resolved: bpf: Reject fragmented frames in devmap Devmap broadcast redirects clone the packet for all but the last destination. For native XDP, that clone path copies only the linear xdp_frame data, while fragmented frames keep skb_shared_info in tailroom outside the linear area. Cloning such a frame leaves XDP_FLAGS_HAS_FRAGS set but without valid frag metadata, and the later free path can interpret uninitialized tail data as skb_shared_info, leading to an out-of-bounds access during frame return. Reject fragmented native XDP frames in dev_map_enqueue_clone(). Add the same restriction to the generic XDP clone path in dev_map_redirect_clone(). Generic XDP represents fragmented packets as nonlinear skbs, and rejecting them here keeps clone-based broadcast support aligned between native and generic XDP.
- Published
- Jul 25, 2026
- Updated
- Sep 4, 2026
- EPSS
- 0.5% · 41th percentile
- CWE
- CWE-125
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Report tools
Action score
39
Monitor
Low priority for now.
- CVSS
- 39 / 40 · 9.8 / 10
- CISA KEV
- 0 / 30 · Not listed
- EPSS
- 0 / 30 · 0.5%
CNA vs NVD score
- NVD
- —
- CNA · Linux
- 9.8
- 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.
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 kernel5.14 and later · before 5.15.212
- linux linux kernel5.16 and later · before 6.1.178
- linux linux kernel6.2 and later · before 6.6.145
- linux linux kernel6.7 and later · before 6.12.96
- linux linux kernel6.13 and later · before 6.18.39
- linux linux kernel6.19 and later · before 7.1.4
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
- 5.14affected
- e624d4ed4aa8cc3c69d1359b0aaea539203ed266 and later · before 47baddc856ae7e93a565dd9deeb797999b179466affected · git
- e624d4ed4aa8cc3c69d1359b0aaea539203ed266 and later · before 07a4c11ee8ef4abcb39d922e9e410ae269671cdfaffected · git
- e624d4ed4aa8cc3c69d1359b0aaea539203ed266 and later · before bccbab36ff228e0825eb85d9b0f9b8434cd0a399affected · git
- e624d4ed4aa8cc3c69d1359b0aaea539203ed266 and later · before c5b4f5efcb55c1af3fe44ff712d31b7fb098a831affected · git
- e624d4ed4aa8cc3c69d1359b0aaea539203ed266 and later · before a9bb2d9c798cb62a4050a991c27b752770c33afeaffected · git
- e624d4ed4aa8cc3c69d1359b0aaea539203ed266 and later · before 51d07c12ca411e692c424ecdabf077f1e61a61beaffected · git
- e624d4ed4aa8cc3c69d1359b0aaea539203ed266 and later · before aa496720618f1a6054f1c870bf10b4f6c99bf656affected · git
- before 5.14not affected · semver
- 5.15.212 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 6.1.180-1 | 6.1.180-1 |
| Debian:12 | linux-6.12 | before 6.12.100-1~deb12u1 | 6.12.100-1~deb12u1 |
| Debian:13 | linux | before 6.12.96-1 | 6.12.96-1 |
| Debian:14 | linux | before 7.1.4-1 | 7.1.4-1 |
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 | 07a4c11ee8ef4abcb39d922e9e410ae269671cdf | Vendor (CNA) |
| Linux Linux | 47baddc856ae7e93a565dd9deeb797999b179466 | Vendor (CNA) |
| Linux Linux | 51d07c12ca411e692c424ecdabf077f1e61a61be | Vendor (CNA) |
| Linux Linux | a9bb2d9c798cb62a4050a991c27b752770c33afe | Vendor (CNA) |
| Linux Linux | aa496720618f1a6054f1c870bf10b4f6c99bf656 | Vendor (CNA) |
| Linux Linux | bccbab36ff228e0825eb85d9b0f9b8434cd0a399 | Vendor (CNA) |
| Linux Linux | c5b4f5efcb55c1af3fe44ff712d31b7fb098a831 | Vendor (CNA) |
| Debian:linux | 6.1.180-1 · Debian:12 | Package registry (OSV) |
| Debian:linux-6.12 | 6.12.100-1~deb12u1 · 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
- Anyone who can reach it over the internet 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
- high · data can be read
- Integrity
- high · data or configuration can be modified
- Availability
- high · the service can be disrupted
- Attack vector
- Network
- Attack complexity
- Low
- Privileges required
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality impact
- High
- Integrity impact
- High
- Availability impact
- High
Weakness class (CWE)
CWE-125 · Out-of-bounds ReadCVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/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.
Attack patterns (CAPEC)
ATT&CK techniques
—
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/07a4c11ee8ef4abcb39d922e9e410ae269671cdf
- git.kernel.org/stable/c/47baddc856ae7e93a565dd9deeb797999b179466
- git.kernel.org/stable/c/51d07c12ca411e692c424ecdabf077f1e61a61be
- git.kernel.org/stable/c/a9bb2d9c798cb62a4050a991c27b752770c33afe
- git.kernel.org/stable/c/aa496720618f1a6054f1c870bf10b4f6c99bf656
- git.kernel.org/stable/c/bccbab36ff228e0825eb85d9b0f9b8434cd0a399
- git.kernel.org/stable/c/c5b4f5efcb55c1af3fe44ff712d31b7fb098a831
Vendor advisories and official records. Exploit/PoC links are deliberately left out.