Description
In the Linux kernel, the following vulnerability has been resolved: bpf: Reject exclusive maps for bpf_map_elem iterators Exclusive maps (aka excl_prog_hash) are meant to be reachable only from the single program whose hash matches. This is enforced by check_map_prog_compatibility() when the map is referenced from a program such as signed BPF loaders. A bpf_map_elem iterator, however, binds its target map at attach time in bpf_iter_attach_map() instead of referencing it from the program, so the exclusivity check is never reached. On top of that, the iterator exposes the map value as a writable buffer.
Affected products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
Linux Linux
Default version status: unaffected
baefdbdf6812e120c9fba9cfb101d3656f478026 to < 5cf2c85b1231218a3e3e9f188afb4fe2e17903d5affectedbaefdbdf6812e120c9fba9cfb101d3656f478026 to < c3da741d5b2119c61c4498bc936f0fc1dbc3c79baffectedbaefdbdf6812e120c9fba9cfb101d3656f478026 to < 3c56ee343f9412d81918635c3e25e22a5dd6d87eaffected
Linux Linux
Default version status: affected
6.18affected0 to < 6.18unaffected6.18.40 to ≤ 6.18.*unaffected7.1.5 to ≤ 7.1.*unaffected7.2 to ≤ *unaffected