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CVE-2026-72014: Linux, грешка в паметта

9.8

CVSS 3.1

Няма данни

Вероятност да бъде експлоатирана в следващите 30 дни (EPSS)

Няма потвърждение

Атакува се

Няма данни

Време до експлоатация

Атакува се по мрежата, без особени условия, без вход и без действие от потребителя.

CVE радар: още уязвимости от този вид

  • Експлоатация: няма данни за експлоатация
  • Атаката може да се автоматизира

Описание

Оригинално описание

In the Linux kernel, the following vulnerability has been resolved: drbd: reject data replies with an out-of-range payload size recv_dless_read() receives a P_DATA_REPLY from a peer into the bio of an outstanding read request. The peer-supplied payload length reaches it as the signed int data_size, and two peer-controlled inputs can make it negative. With a negotiated data-integrity-alg the digest length is subtracted first, so a reply whose payload is smaller than the digest underflows data_size. With no integrity algorithm (the default) data_size is assigned from the unsigned h95/h100 wire length and drbdd() never bounds it for a payload-carrying command, so a length above INT_MAX casts it negative; this path needs no non-default feature. The bio receive loop then computes expect = min_t(int, data_size, bv_len), which is negative, and drbd_recv_all_warn(mapped, expect) receives with a size_t of SIZE_MAX into the first mapped page. The sibling receive path read_in_block() is not affected: it uses an unsigned size and rejects it against DRBD_MAX_BIO_SIZE before receiving. Reject a data reply whose size is negative after the optional digest subtraction, covering both triggers. Impact: a malicious or man-in-the-middle DRBD peer copies attacker-chosen bytes past a bio page in the receiver, corrupting kernel memory. A node that reads from its peer (a diskless node, or read-balancing to the peer) is exposed in the default configuration; data-integrity-alg is not required.

Засегнати продукти

  • Linux Linux: b411b3637fa71fce9cf2acf0639009500f5892fe преди bca33f5442c3094511719d9db792ce3165d87e76; b411b3637fa71fce9cf2acf0639009500f5892fe преди 741a682535deffe9ab7e5c89caf83571efbc9dd9; b411b3637fa71fce9cf2acf0639009500f5892fe преди f14e87d7b166490bceb9603b39310e51595d05b9; b411b3637fa71fce9cf2acf0639009500f5892fe преди f16866c62656865854106b79bcf6e4ca97a51a92; b411b3637fa71fce9cf2acf0639009500f5892fe преди 5f59a8142000f0b8f75c432209ead73c424a745d; b411b3637fa71fce9cf2acf0639009500f5892fe преди 38cc4867540ae8beedfe41a1a1a6ed37052c77d6; b411b3637fa71fce9cf2acf0639009500f5892fe преди 648d4317326e6aa3f8c05cbf0fd14cc2eba6ca99; b411b3637fa71fce9cf2acf0639009500f5892fe преди bd910a7660d280595ef94cb6d193951d855d330f
  • Linux Linux: 2.6.33; преди 2.6.33; 5.10.261 до 5.10.*; 5.15.212 до 5.15.*; 6.1.178 до 6.1.*; 6.6.145 до 6.6.*; 6.12.97 до 6.12.*; 6.18.40 до 6.18.*; 7.1.5 до 7.1.*; от 7.2 нататък

Вид слабост

История

  • 15 август 2026 Публикувано

Други уязвимости в Linux Linux

Първоизточници

CVE-2026-72014: Linux, грешка в паметта | freedomonline.bg