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CVE-2026-64551: Linux, грешка в паметта

9.1

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: sctp: validate STALE_COOKIE cause length before reading staleness When an ERROR chunk with a STALE_COOKIE cause is received in the COOKIE_ECHOED state, sctp_sf_do_5_2_6_stale() reads the 4-byte Measure of Staleness that follows the cause header: err = (struct sctp_errhdr *)(chunk->skb->data); stale = ntohl(*(__be32 *)((u8 *)err + sizeof(*err))); err is the first cause in the chunk, not the STALE_COOKIE cause that caused the dispatch, and nothing guarantees the staleness field is present. sctp_walk_errors() only requires a cause to be as long as the 4-byte header, so for a STALE_COOKIE cause of length 4 the read runs past the cause, and for a minimal ERROR chunk past skb->tail. The value is echoed to the peer in the Cookie Preservative of the reply INIT, leaking uninitialized memory. sctp_sf_cookie_echoed_err() already walks to the STALE_COOKIE cause, so check its length there and pass it to sctp_sf_do_5_2_6_stale(), which reads that cause instead of the first one. A STALE_COOKIE cause too short to hold the staleness field is discarded. The read is reachable by any peer that can drive an association into COOKIE_ECHOED, including an unprivileged process using a raw SCTP socket in a user and network namespace.

Засегнати продукти

  • Linux Linux: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 преди 6022da37786701df1fc5dd946a6dcba59d5473b1; 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 преди 861f884f5471632c731cbbd612a1c072e391a624; 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 преди 588706ebaf8cdb4a4161602949eba365514b1db1; 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 преди a257b41ddfe9e327b26581ad2777f04b23ac73f5; 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 преди 08a8f2d13f703924316e9aeac863a88ef50990c7; 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 преди ebe0a55d954fa8da383b6192edb8f763dcb002d5; 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 преди bbd6b2ea966cf57b6ae095cf5a8dbc993cd197a0; 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 преди 1cd23ca80784223fa2204e16203f754da4e821f8
  • Linux Linux: 2.6.12; преди 2.6.12; 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

  • 27 юли 2026 Публикувано

Други уязвимости в Linux Linux

Първоизточници

CVE-2026-64551: Linux, грешка в паметта | freedomonline.bg