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CVE-2026-98851: Linux

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CVSS

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Вероятност да бъде експлоатирана в следващите 30 дни (EPSS)

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    Описание

    Оригинално описание

    In the Linux kernel, the following vulnerability has been resolved: netfilter: nft_flow_offload: drop flowtable reference on init error path nft_flow_offload_init() bumps the flowtable use count with nft_use_inc() before calling nf_ct_netns_get(). When the latter fails, the error is returned as-is and the reference is leaked. The upper layers do not balance it either: nf_tables_newexpr() clears expr->ops when the expression init callback fails, so the nft_expr_more() iteration in nft_rule_expr_deactivate() and nf_tables_rule_destroy() stops right before the failed expression and its ->destroy callback, which would drop the reference, never runs. Each failed rule addition therefore leaks one flowtable reference and the flowtable can no longer be removed: NFT_MSG_DELFLOWTABLE keeps reporting -EBUSY even though no rule references it. Save the nf_ct_netns_get() return value and undo the nft_use_inc() when it fails, restoring the inc/dec pairing within nft_flow_offload_init() itself.

    Засегнати продукти

    • Linux Linux: a3c90f7a2323b331ae816d5b0633e68148e25d04 преди 4e5a6d89083af6f23f0ac2cb611ef267590a3ece; a3c90f7a2323b331ae816d5b0633e68148e25d04 преди 1f43b6b099fa39032780b9494cedfd98f318f3c4; a3c90f7a2323b331ae816d5b0633e68148e25d04 преди 87f4914758f2da10b56cdb7f90ed815ade1e8ea3; a3c90f7a2323b331ae816d5b0633e68148e25d04 преди 1d27214fd9a4d2c0c6d998fc9d4fb61448a3438e; a3c90f7a2323b331ae816d5b0633e68148e25d04 преди 64ac0cb574c740bf723affb79b646eeba920db6b; a3c90f7a2323b331ae816d5b0633e68148e25d04 преди c5f91098edee98c015f78488460a0609e62582a5; a3c90f7a2323b331ae816d5b0633e68148e25d04 преди 4cd378423a33194a773c267fc58606d28fce95cf; a3c90f7a2323b331ae816d5b0633e68148e25d04 преди 747928b5d4ff8c8de55138a54c13980e4bb88578
    • Linux Linux: 4.16; преди 4.16; 5.10.273 до 5.10.*; 5.15.224 до 5.15.*; 6.1.191 до 6.1.*; 6.6.160 до 6.6.*; 6.12.113 до 6.12.*; 6.18.56 до 6.18.*; 7.2.10 до 7.2.*; 7.3 до *

    История

    • 18 октомври 2026 Публикувано

    Други уязвимости в Linux Linux

    Първоизточници

    CVE-2026-98851: Linux | freedomonline.bg