CVE-2026-64355
CVE CVE-2026-64355EUVD EUVD-2026-48899Published 2026-07-25T08:50:13.000ZLast changed 2026-08-05T12:41:04.000ZCVSS 9.8
What the advisory describes
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.
Source: EUVD (ENISA), in the words of the advisory.
Products the advisory names
These come from the advisory itself, not from any check we performed.
- Linux — Linux e624d4ed4aa8cc3c69d1359b0aaea539203ed266 <aa496720618f1a6054f1c870bf10b4f6c99bf656; e624d4ed4aa8cc3c69d1359b0aaea539203ed266 <47baddc856ae7e93a565dd9deeb797999b179466; patch: 6.6.145; e624d4ed4aa8cc3c69d1359b0aaea539203ed266 <bccbab36ff228e0825eb85d9b0f9b8434cd0a399; e624d4ed4aa8cc3c69d1359b0aaea539203ed266 <c5b4f5efcb55c1af3fe44ff712d31b7fb098a831; 5.14; patch: 0; patch: 6.18.39; patch: 5.15.212; patch: 6.1.178; e624d4ed4aa8cc3c69d1359b0aaea539203ed266 <07a4c11ee8ef4abcb39d922e9e410ae269671cdf; e624d4ed4aa8cc3c69d1359b0aaea539203ed266 <a9bb2d9c798cb62a4050a991c27b752770c33afe; patch: 7.1.4; patch: 7.2-rc1; e624d4ed4aa8cc3c69d1359b0aaea539203ed266 <51d07c12ca411e692c424ecdabf077f1e61a61be; patch: 6.12.96
The versions shown are the advisory's own. Patchlage compares no version numbers and derives no judgement from them — which version is installed is something a person has to look up.
Carried in the product catalogue
An estate covering these products can be recorded in Patchlage. An advisory about them appears in the next morning's situation report.
- Linux — Linux
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