CVE-2024-58100
- Source
- https://cve.org/CVERecord?id=CVE-2024-58100
- Import Source
- https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2024-58100.json
- JSON Data
- https://api.test.osv.dev/v1/vulns/CVE-2024-58100
- Downstream
- Related
- Published
- 2025-05-05T14:53:33Z
- Modified
- 2026-08-12T03:30:40Z
- Severity
-
- 7.8 (High) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H CVSS Calculator
- Summary
- bpf: check changes_pkt_data property for extension programs
- Details
-
In the Linux kernel, the following vulnerability has been resolved:
bpf: check changes_pkt_data property for extension programs
When processing calls to global sub-programs, verifier decides whether to invalidate all packet pointers in current state depending on the changes_pkt_data property of the global sub-program.
Because of this, an extension program replacing a global sub-program must be compatible with changes_pkt_data property of the sub-program being replaced.
This commit:
-
adds changes_pkt_data flag to struct bpf_prog_aux:
- this flag is set in check_cfg() for main sub-program;
- in jit_subprogs() for other sub-programs;
-
modifies bpf_check_attach_btf_id() to check changes_pkt_data flag;
-
moves call to check_attach_btf_id() after the call to check_cfg(), because it needs changes_pkt_data flag to be set:
bpf_check: ... ...
- check_attach_btf_id resolve_pseudo_ldimm64 resolve_pseudo_ldimm64 --> bpf_prog_is_offloaded bpf_prog_is_offloaded check_cfg check_cfg + check_attach_btf_id ... ...
The following fields are set by check_attach_btf_id():
- env->ops
- prog->aux->attach_btf_trace
- prog->aux->attach_func_name
- prog->aux->attach_func_proto
- prog->aux->dst_trampoline
- prog->aux->mod
- prog->aux->saved_dst_attach_type
- prog->aux->saved_dst_prog_type
- prog->expected_attach_type
Neither of these fields are used by resolve_pseudo_ldimm64() or bpf_prog_offload_verifier_prep() (for netronome and netdevsim drivers), so the reordering is safe.
-
- Database specific
{ "cna_assigner": "Linux", "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/58xxx/CVE-2024-58100.json" }- References
-
- https://git.kernel.org/stable/c/3846e2bea565ee1c5195dcc625fda9868fb0e3b3
- https://git.kernel.org/stable/c/7197fc4acdf238ec8ad06de5a8235df0c1f9c7d7
- https://git.kernel.org/stable/c/81f6d0530ba031b5f038a091619bf2ff29568852
- https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/58xxx/CVE-2024-58100.json
- https://nvd.nist.gov/vuln/detail/CVE-2024-58100
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git