GHSA-QJ57-HHQM-6W8V
Vulnerability from github – Published: 2026-08-15 06:32 – Updated: 2026-08-15 06:32In 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": [],
"aliases": [
"CVE-2026-74360"
],
"database_specific": {
"cwe_ids": [],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-08-15T06:22:37Z",
"severity": null
},
"details": "In the Linux kernel, the following vulnerability has been resolved:\n\nbpf: Reject exclusive maps for bpf_map_elem iterators\n\nExclusive maps (aka excl_prog_hash) are meant to be reachable only\nfrom the single program whose hash matches. This is enforced by\ncheck_map_prog_compatibility() when the map is referenced from a\nprogram such as signed BPF loaders.\n\nA bpf_map_elem iterator, however, binds its target map at attach\ntime in bpf_iter_attach_map() instead of referencing it from the\nprogram, so the exclusivity check is never reached. On top of that,\nthe iterator exposes the map value as a writable buffer.",
"id": "GHSA-qj57-hhqm-6w8v",
"modified": "2026-08-15T06:32:31Z",
"published": "2026-08-15T06:32:31Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-74360"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/3c56ee343f9412d81918635c3e25e22a5dd6d87e"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/5cf2c85b1231218a3e3e9f188afb4fe2e17903d5"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/c3da741d5b2119c61c4498bc936f0fc1dbc3c79b"
}
],
"schema_version": "1.4.0",
"severity": []
}
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