Към съдържанието
Търсене

CVE-2026-72430: Linux

Няма оценка

CVSS

Няма данни

Вероятност да бъде експлоатирана в следващите 30 дни (EPSS)

Няма потвърждение

Атакува се

Няма данни

Време до експлоатация

    Описание

    Оригинално описание

    In the Linux kernel, the following vulnerability has been resolved: net/sched: act_ct: fix nf_connlabels leak on two error paths tcf_ct_fill_params() calls nf_connlabels_get() (setting put_labels) when TCA_CT_LABELS is present, but two later error sites use a bare return instead of "goto err", skipping the err: nf_connlabels_put() cleanup. They also precede the "p->put_labels = put_labels" assignment, so the tcf_ct_params_free() fallback does not release the count either. Each failed RTM_NEWACTION on these paths leaks one nf_connlabels reference: net->ct.labels_used is incremented and never released. The action is reachable with CAP_NET_ADMIN over the netns, i.e. from an unprivileged user namespace on default-userns kernels. Impact: an unprivileged user with CAP_NET_ADMIN over a network namespace (e.g. via user namespaces) leaks one nf_connlabels reference per failed RTM_NEWACTION on the two error paths; net->ct.labels_used is never released. The err: label is safe to reach from both sites: p->tmpl is still NULL there (kzalloc'd, not yet assigned) and nf_ct_put(NULL) is a no-op, so no inline release is needed.

    Засегнати продукти

    • Linux Linux: 70f06c115bcca26ceeebf938e48bc8143668e38b преди 13b561c893c741635adce3781490a7a1099106c8; 70f06c115bcca26ceeebf938e48bc8143668e38b преди 1d51aff78f078af1a80e9496c2f4643f4c0ef0a0; 70f06c115bcca26ceeebf938e48bc8143668e38b преди 0c3d8fc87e10e38fe054ece009d6d1f66bef2cd4; 70f06c115bcca26ceeebf938e48bc8143668e38b преди 16e088016f38cf728a0de709c3335cc5a3850476
    • Linux Linux: 6.7; преди 6.7; 6.12.97 до 6.12.*; 6.18.40 до 6.18.*; 7.1.5 до 7.1.*; 7.2 до *

    История

    • 15 август 2026 Публикувано

    Други уязвимости в Linux Linux

    Първоизточници

    CVE-2026-72430: Linux | freedomonline.bg