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CVE-2026-68315: Linux, грешка в паметта

7.5

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 stream count in sctp_process_strreset_inreq() When processing a RESET_IN_REQUEST from a peer, sctp_process_strreset_inreq() derives the stream count from the parameter length but does not check whether the resulting RESET_OUT_REQUEST would exceed SCTP_MAX_CHUNK_LEN. The OUT request header (sctp_strreset_outreq, 16 bytes) is 8 bytes larger than the IN request header (sctp_strreset_inreq, 8 bytes). Generally, the IP payload is bounded to 65535 bytes, so the stream list cannot be large enough to trigger the overflow. However, on interfaces with MTU > 65535 (e.g., loopback with IPv6 jumbograms), a stream list that fits within the incoming IN parameter can cause a __u16 overflow in sctp_make_strreset_req() when computing the OUT request size, leading to an undersized skb allocation and a kernel BUG: net/core/skbuff.c:207 skb_panic net/core/skbuff.c:2625 skb_put net/sctp/sm_make_chunk.c:1535 sctp_addto_chunk net/sctp/sm_make_chunk.c:3695 sctp_make_strreset_req net/sctp/stream.c:655 sctp_process_strreset_inreq The local setsockopt path validates the generated reset request size. However, for an incoming-only reset, it accounts for the smaller IN request even though the peer must generate an OUT request with the same stream list. Such a request cannot be completed successfully by the peer. Reject peer IN requests whose corresponding OUT request would exceed SCTP_MAX_CHUNK_LEN. Also tighten the local check so it does not send an IN request that would require an oversized OUT request from the peer.

Засегнати продукти

  • Linux Linux: 7f9d68ac944e24ee5f9ac8d059ca00b1c1d34137 преди 61327d8e7cfb0259d527be17202630f556213249; 7f9d68ac944e24ee5f9ac8d059ca00b1c1d34137 преди 7cf7439948e3bf639119119922c88ec190874ca3; 7f9d68ac944e24ee5f9ac8d059ca00b1c1d34137 преди 60c47dea5d320d2fc706e9aad1db38a04df0a056; 7f9d68ac944e24ee5f9ac8d059ca00b1c1d34137 преди b255d8cd6cc68045ae9eecbac3b3c14e1f176c9b; 7f9d68ac944e24ee5f9ac8d059ca00b1c1d34137 преди 6f0e39d180cd7cced647381b6fa14fd83d261047; 7f9d68ac944e24ee5f9ac8d059ca00b1c1d34137 преди 1a10fe1aa9c01f41b389a31906a77d538637c9d9; 7f9d68ac944e24ee5f9ac8d059ca00b1c1d34137 преди 00ae679cb21a035491fdad8d58dc6d79cc68b675; 7f9d68ac944e24ee5f9ac8d059ca00b1c1d34137 преди 18ae07691d43183d270de8be9dc8e027906015d9
  • Linux Linux: 4.11; преди 4.11; 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.*; 7.2 до *

Вид слабост

История

  • 10 август 2026 Публикувано

Други уязвимости в Linux Linux

Първоизточници

CVE-2026-68315: Linux, грешка в паметта | freedomonline.bg