CVE-2024-58237
- Source
- https://cve.org/CVERecord?id=CVE-2024-58237
- Import Source
- https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2024-58237.json
- JSON Data
- https://api.test.osv.dev/v1/vulns/CVE-2024-58237
- Downstream
- Related
- Published
- 2025-05-05T14:53:34Z
- Modified
- 2026-08-12T03:30:45Z
- 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: consider that tail calls invalidate packet pointers
- Details
-
In the Linux kernel, the following vulnerability has been resolved:
bpf: consider that tail calls invalidate packet pointers
Tail-called programs could execute any of the helpers that invalidate packet pointers. Hence, conservatively assume that each tail call invalidates packet pointers.
Making the change in bpf_helper_changes_pkt_data() automatically makes use of check_cfg() logic that computes 'changes_pkt_data' effect for global sub-programs, such that the following program could be rejected:
int tail_call(struct __sk_buff *sk) { bpf_tail_call_static(sk, &jmp_table, 0); return 0; } SEC("tc") int not_safe(struct __sk_buff *sk) { int *p = (void *)(long)sk->data; ... make p valid ... tail_call(sk); *p = 42; /* this is unsafe */ ... }The tc_bpf2bpf.c:subprog_tc() needs change: mark it as a function that can invalidate packet pointers. Otherwise, it can't be freplaced with tailcall_freplace.c:entry_freplace() that does a tail call.
- Database specific
{ "cna_assigner": "Linux", "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/58xxx/CVE-2024-58237.json" }- References
-
- https://git.kernel.org/stable/c/1a4607ffba35bf2a630aab299e34dd3f6e658d70
- https://git.kernel.org/stable/c/1c2244437f9ad3dd91215f920401a14f2542dbfc
- https://git.kernel.org/stable/c/f1692ee23dcaaddc24ba407b269707ee5df1301f
- https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/58xxx/CVE-2024-58237.json
- https://nvd.nist.gov/vuln/detail/CVE-2024-58237
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git