CVE-2022-49548 (GCVE-0-2022-49548)
Vulnerability from cvelistv5
Published
2025-02-26 02:13
Modified
2026-05-11 19:02
Severity ?
7.8 (High) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Summary
In the Linux kernel, the following vulnerability has been resolved: bpf: Fix potential array overflow in bpf_trampoline_get_progs() The cnt value in the 'cnt >= BPF_MAX_TRAMP_PROGS' check does not include BPF_TRAMP_MODIFY_RETURN bpf programs, so the number of the attached BPF_TRAMP_MODIFY_RETURN bpf programs in a trampoline can exceed BPF_MAX_TRAMP_PROGS. When this happens, the assignment '*progs++ = aux->prog' in bpf_trampoline_get_progs() will cause progs array overflow as the progs field in the bpf_tramp_progs struct can only hold at most BPF_MAX_TRAMP_PROGS bpf programs.
References
Impacted products
Vendor Product Version
Linux Linux Version: 88fd9e5352fe05f7fe57778293aebd4cd106960b
Version: 88fd9e5352fe05f7fe57778293aebd4cd106960b
Version: 88fd9e5352fe05f7fe57778293aebd4cd106960b
Version: 88fd9e5352fe05f7fe57778293aebd4cd106960b
Version: 88fd9e5352fe05f7fe57778293aebd4cd106960b
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          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nbpf: Fix potential array overflow in bpf_trampoline_get_progs()\n\nThe cnt value in the \u0027cnt \u003e= BPF_MAX_TRAMP_PROGS\u0027 check does not\ninclude BPF_TRAMP_MODIFY_RETURN bpf programs, so the number of\nthe attached BPF_TRAMP_MODIFY_RETURN bpf programs in a trampoline\ncan exceed BPF_MAX_TRAMP_PROGS.\n\nWhen this happens, the assignment \u0027*progs++ = aux-\u003eprog\u0027 in\nbpf_trampoline_get_progs() will cause progs array overflow as the\nprogs field in the bpf_tramp_progs struct can only hold at most\nBPF_MAX_TRAMP_PROGS bpf programs."
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    "datePublished": "2025-02-26T02:13:59.797Z",
    "dateReserved": "2025-02-26T02:08:31.590Z",
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