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CVE-2026-68197: 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: wifi: mwifiex: fix NULL dereference when the AP has HT-cap but no HT-oper mwifiex_tdls_add_ht_oper() gates its follow-the-AP-bandwidth path on bss_desc->bcn_ht_cap being present, but then dereferences a different pointer, bss_desc->bcn_ht_oper: if (ISSUPP_CHANWIDTH40(priv->adapter->hw_dot_11n_dev_cap) && bss_desc->bcn_ht_cap && ISALLOWED_CHANWIDTH40(bss_desc->bcn_ht_oper->ht_param)) bcn_ht_cap and bcn_ht_oper are populated independently while parsing the associated AP's beacon in mwifiex_update_bss_desc_with_ie(): an AP that advertises an HT Capabilities element but no HT Operation element leaves bcn_ht_cap non-NULL and bcn_ht_oper NULL. Setting up a TDLS link to a peer while associated to such an AP then dereferences the NULL bcn_ht_oper and crashes the kernel. Every other bcn_ht_oper user in the driver NULL-checks it first. Guard on the pointer that is actually dereferenced. Found by 0sec automated security-research tooling (https://0sec.ai).

    Засегнати продукти

    • Linux Linux: 396939f94084d5923d558e9f22db48bc51156e47 преди e1770f7410b4232a0267924f99751dc9c5ca31af; 396939f94084d5923d558e9f22db48bc51156e47 преди 8c2058717fd06f05d421c2d3adf1dff3c3abcda1; 396939f94084d5923d558e9f22db48bc51156e47 преди fba7eb7b248ea0618235f504158b685d752a153a; 396939f94084d5923d558e9f22db48bc51156e47 преди eb42c3c8fd479166c42984728754cd779c71fd60; 396939f94084d5923d558e9f22db48bc51156e47 преди 45011e4d9ba3f2182e5df64be65888044fa20771; 396939f94084d5923d558e9f22db48bc51156e47 преди 9375a4ea4121625ef27a46b74781cda66a5cc61b; 396939f94084d5923d558e9f22db48bc51156e47 преди cca4398aa305c22016d1714f388e2fa6ea4e5ad4; 396939f94084d5923d558e9f22db48bc51156e47 преди c3d68e294cbb6a4090bb219d3dcaca85a011809b
    • Linux Linux: 3.16; преди 3.16; 5.10.265 до 5.10.*; 5.15.216 до 5.15.*; 6.1.183 до 6.1.*; 6.6.148 до 6.6.*; 6.12.101 до 6.12.*; 6.18.42 до 6.18.*; 7.1.6 до 7.1.*; от 7.2 нататък

    История

    • 10 август 2026 Публикувано

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    CVE-2026-68197: Linux | freedomonline.bg