CVE-2026-90333: Linux

Описание

Оригинално описание

In the Linux kernel, the following vulnerability has been resolved: dm-integrity: replace forgeable discard filler with a keyed sector marker The discard-block check in dm_integrity_rw_tag() treats a stored tag of all 0xf6 bytes (DISCARD_FILLER) as proof a block was discarded and skips HMAC verification. allow_discards is only accepted in dm-integrity's standalone mode. An attacker with raw write access to the backing device, but without the integrity key, can stamp any block with an all-0xf6 tag and have it served as authentic. Add a new "allow_discards_keyed" target argument that marks discarded blocks with a keyed checksum of (salt || sector) instead, computed by integrity_discard_checksum().

Засегнати продукти

• Linux Linux: 84597a44a9d86ac949900441cea7da0af0f2f473 преди 388c3f6496bb8083576d989e6d249ba9807c6b0b; 84597a44a9d86ac949900441cea7da0af0f2f473 преди 5c58ea19a909ef6bed4f0f824e9cd7e30d7e4775; 84597a44a9d86ac949900441cea7da0af0f2f473 преди 6228722c27304e4682cddc1fede03898f87e4414; 84597a44a9d86ac949900441cea7da0af0f2f473 преди 68c5c42567bc462139128968ebbfadd0aefff519
• Linux Linux: 5.7; преди 5.7; 6.12.114 до 6.12.*; 6.18.52 до 6.18.*; 7.2.6 до 7.2.*; от 7.3 нататък

История

Други уязвимости в Linux Linux

• 8.1CVE-2026-99270
• 7.8CVE-2026-99269
• CVE-2026-99268
• CVE-2026-99266
• CVE-2026-99267

Първоизточници

• https://www.cve.org/CVERecord?id=CVE-2026-90333
• https://nvd.nist.gov/vuln/detail/CVE-2026-90333
• https://git.kernel.org/stable/c/388c3f6496bb8083576d989e6d249ba9807c6b0b
• https://git.kernel.org/stable/c/5c58ea19a909ef6bed4f0f824e9cd7e30d7e4775
• https://git.kernel.org/stable/c/6228722c27304e4682cddc1fede03898f87e4414
• https://git.kernel.org/stable/c/68c5c42567bc462139128968ebbfadd0aefff519