- 9.8CriticalCVSS base score
- 0.51%Exploitation in 30 daysEPSS · top 56% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
Description
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.
Timeline
ID reserved
By Linux
- 6 days later
· 6 days later
Published
- 3 months later
· 3 months later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| LinuxCNA (assigner) | 3.1 | Critical9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| NVDNVD · Modified | 3.1 | Critical9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
- EPSS (exploitation in 30 days)
- 0.51% · top 56% of all CVEs (10 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: yes · Technical impact: total
The list uses the assigner's score when there is one, then CISA's, then NVD's: Critical 9.8.
Affected products
- affected e624d4ed4aa8cc3c69d1359b0aaea539203ed266 – < 47baddc856ae7e93a565dd9deeb797999b179466
- affected e624d4ed4aa8cc3c69d1359b0aaea539203ed266 – < 07a4c11ee8ef4abcb39d922e9e410ae269671cdf
- affected e624d4ed4aa8cc3c69d1359b0aaea539203ed266 – < bccbab36ff228e0825eb85d9b0f9b8434cd0a399
- affected e624d4ed4aa8cc3c69d1359b0aaea539203ed266 – < c5b4f5efcb55c1af3fe44ff712d31b7fb098a831
- affected e624d4ed4aa8cc3c69d1359b0aaea539203ed266 – < a9bb2d9c798cb62a4050a991c27b752770c33afe
- affected e624d4ed4aa8cc3c69d1359b0aaea539203ed266 – < 51d07c12ca411e692c424ecdabf077f1e61a61be
- affected e624d4ed4aa8cc3c69d1359b0aaea539203ed266 – < aa496720618f1a6054f1c870bf10b4f6c99bf656
- affected 5.14
- unaffected < 5.14
- unaffected 5.15.212 – ≤ 5.15.*
- unaffected 6.1.178 – ≤ 6.1.*
- unaffected 6.6.145 – ≤ 6.6.*
- unaffected 6.12.96 – ≤ 6.12.*
- unaffected 6.18.39 – ≤ 6.18.*
- unaffected 7.1.4 – ≤ 7.1.*
- unaffected 7.2 – ≤ *
References
7
- https://git.kernel.org/stable/c/47baddc856ae7e93a565dd9deeb797999b179466 (opens in a new tab)
- https://git.kernel.org/stable/c/07a4c11ee8ef4abcb39d922e9e410ae269671cdf (opens in a new tab)
- https://git.kernel.org/stable/c/bccbab36ff228e0825eb85d9b0f9b8434cd0a399 (opens in a new tab)
- https://git.kernel.org/stable/c/c5b4f5efcb55c1af3fe44ff712d31b7fb098a831 (opens in a new tab)
- https://git.kernel.org/stable/c/a9bb2d9c798cb62a4050a991c27b752770c33afe (opens in a new tab)
- https://git.kernel.org/stable/c/51d07c12ca411e692c424ecdabf077f1e61a61be (opens in a new tab)
- https://git.kernel.org/stable/c/aa496720618f1a6054f1c870bf10b4f6c99bf656 (opens in a new tab)
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2026-48899 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2026-64355)Record last updated .