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CVE-2026-80603: Linux

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.

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

Описание

Оригинално описание

In the Linux kernel, the following vulnerability has been resolved: netfilter: nf_conntrack_irc: fix parse_dcc() off-by-one OOB read parse_dcc() treats data_end as an inclusive end pointer, but its only caller passes data_limit = ib_ptr + datalen, which points one past the last valid byte. The newline search loop iterates while tmp <= data_end, so when no newline is present, *tmp is read at tmp == data_end, one byte beyond the region filled by skb_header_pointer(). irc_buffer is kmalloc'd as MAX_SEARCH_SIZE + 1 bytes and datalen is capped at MAX_SEARCH_SIZE, so the stray read does not fault. The byte is uninitialized or stale; if it contains an ASCII digit, simple_strtoul will consume it and produce a wrong DCC IP or port in the conntrack expectation. The extra allocation byte is also a fragile guard: if the cap or allocation size changes, this becomes a real out-of-bounds read. Change the loop and its post-loop check to use strict less-than, consistent with the caller's exclusive-end convention. Update the function comment accordingly.

Засегнати продукти

  • Linux Linux: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 преди abb8c32b88ea3f46beb68c34fe9a3ac8ed664e7e; 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 преди 437e0a3854b3a44ec15afa9ab88ec215adf3a2fd; 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 преди 910c33e4a8c046c3cc1fa5a465a4d41a1bb398f1; 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 преди 2b70f61f569bb29acb380e6f616a1bbdee15668f; 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 преди 2393f0bd7a467ad475598f3a5b9de27ca36e3037; 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 преди aff589556ed772cb1c0c2d7b4d91ec45c0c39416; 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 преди eeef3b81f449560653662df2dde6f6fe247c5365; 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 преди ef6400ca25a13fd6dedbe8ef4a1d0979bbbfe88a
  • 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

История

  • 28 август 2026 Публикувано

Други уязвимости в Linux Linux

Първоизточници

CVE-2026-80603: Linux | freedomonline.bg