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CVE-2026-31428: Linux

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CVSS

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Вероятност да бъде експлоатирана в следващите 30 дни (EPSS)

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Време до експлоатация

    Описание

    Оригинално описание

    In the Linux kernel, the following vulnerability has been resolved: netfilter: nfnetlink_log: fix uninitialized padding leak in NFULA_PAYLOAD __build_packet_message() manually constructs the NFULA_PAYLOAD netlink attribute using skb_put() and skb_copy_bits(), bypassing the standard nla_reserve()/nla_put() helpers. While nla_total_size(data_len) bytes are allocated (including NLA alignment padding), only data_len bytes of actual packet data are copied. The trailing nla_padlen(data_len) bytes (1-3 when data_len is not 4-byte aligned) are never initialized, leaking stale heap contents to userspace via the NFLOG netlink socket. Replace the manual attribute construction with nla_reserve(), which handles the tailroom check, header setup, and padding zeroing via __nla_reserve(). The subsequent skb_copy_bits() fills in the payload data on top of the properly initialized attribute.

    Засегнати продукти

    • Linux Linux: df6fb868d6118686805c2fa566e213a8f31c8e4f преди 7f3e5d72455936f42709116fabeca3bb216cda62; df6fb868d6118686805c2fa566e213a8f31c8e4f преди 21d8efda029948d3666b0db5afcc0d36c0984aae; df6fb868d6118686805c2fa566e213a8f31c8e4f преди fc961dd7272b5e4a462999635e44a4770d7f2482; df6fb868d6118686805c2fa566e213a8f31c8e4f преди a8365d1064ded323797c5e28e91070c52f44b76c; df6fb868d6118686805c2fa566e213a8f31c8e4f преди a2f6ff3444b663d6cfa63eadd61327a18592885a; df6fb868d6118686805c2fa566e213a8f31c8e4f преди c9f6c51d36482805ac3ffadb9663fe775a13e926; df6fb868d6118686805c2fa566e213a8f31c8e4f преди 7eff72968161fb8ddb26113344de3b92fb7d7ef5; df6fb868d6118686805c2fa566e213a8f31c8e4f преди 52025ebaa29f4eb4ed8bf92ce83a68f24ab7fdf7
    • Linux Linux: 2.6.24; преди 2.6.24; 5.10.253 до 5.10.*; 5.15.203 до 5.15.*; 6.1.168 до 6.1.*; 6.6.131 до 6.6.*; 6.12.80 до 6.12.*; 6.18.21 до 6.18.*; 6.19.11 до 6.19.*; от 7.0 нататък
    • Siemens: още 3 продукта, добавени от Siemens

      SIMATIC S7-1500 CPU 1518-4 PN/DP MFP, SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP, SIPLUS S7-1500 CPU 1518-4 PN/DP MFP

    История

    • 13 април 2026 Публикувано

    Други уязвимости в Linux Linux

    Първоизточници

    CVE-2026-31428: Linux | freedomonline.bg