CVSS 3.1
Вероятност да бъде експлоатирана в следващите 30 дни (EPSS)
Атакува се
Време до експлоатация
Атакува се локално, без особени условия, без вход и без действие от потребителя.
- Експлоатация: няма данни за експлоатация
- Атаката не може да се автоматизира
Описание
Оригинално описание
In the Linux kernel, the following vulnerability has been resolved: netfilter: ipset: do not update comments from kernel-side hash adds mtype_resize() copies comment pointers with memcpy(), not the comment objects themselves. During the window after an entry has been copied but before the table swap and backlog replay, the old table is still published for packet-side updates while the replacement-table entry already holds the same ip_set_comment_rcu pointer. If xt_SET --add-set ... --exist hits that old entry in this window, mtype_add() calls ip_set_init_comment() even though packet-side adds carry no comment payload. That call frees the shared comment through the old entry, so the replacement-table entry now holds a stale pointer. When the queued add is replayed on the new table, mtype_add() calls ip_set_init_comment() again and strlen() dereferences the stale pointer. Fix this in mtype_add() by skipping ip_set_init_comment() when ext->target marks a packet-side add. Userspace adds still update comments, while packet-side adds can no longer free comment storage shared with a resize copy.
Засегнати продукти
- Linux Linux: f66ee0410b1c3481ee75e5db9b34547b4d582465 преди 6f13f4d52d06986c18f12e8bffaab944dd27ceab; f66ee0410b1c3481ee75e5db9b34547b4d582465 преди f9d6cabff1fca010562dcdb0d22b296bdca3ba5a; f66ee0410b1c3481ee75e5db9b34547b4d582465 преди 16bfa7be2d76ca1e0aacfa363482e1bf8ab5042a; f66ee0410b1c3481ee75e5db9b34547b4d582465 преди 661ff9c0cfbe07f8eed920dde9f7781491738207; f66ee0410b1c3481ee75e5db9b34547b4d582465 преди c710e9bf38e4e71a8db85d26a0f70c0674664207; f66ee0410b1c3481ee75e5db9b34547b4d582465 преди 4ae701848e4ba9e9713375fb7d82218cbd309da2; f66ee0410b1c3481ee75e5db9b34547b4d582465 преди 77dbb248a5cc7a5270cd37bbb0b635bf059a872a; f66ee0410b1c3481ee75e5db9b34547b4d582465 преди f30415929be8aeb002d557c8d3f7ab2d2188003a; 5dd9488ae41070b69d2f4acb580f77db5705f9ca; a469bab3386aebff33c59506f3a95e35b91118fd; 5.4.24 преди 5.5; 5.5.8 преди 5.6
- Linux Linux: 5.6; преди 5.6; 5.10.265 до 5.10.*; 5.15.216 до 5.15.*; 6.1.183 до 6.1.*; 6.6.151 до 6.6.*; 6.12.103 до 6.12.*; 6.18.44 до 6.18.*; 7.1.8 до 7.1.*; от 7.2 нататък
История
- 15 август 2026 Публикувано
Други уязвимости в Linux Linux
Първоизточници
- https://www.cve.org/CVERecord?id=CVE-2026-74492
- https://nvd.nist.gov/vuln/detail/CVE-2026-74492
- https://git.kernel.org/stable/c/6f13f4d52d06986c18f12e8bffaab944dd27ceab
- https://git.kernel.org/stable/c/f9d6cabff1fca010562dcdb0d22b296bdca3ba5a
- https://git.kernel.org/stable/c/16bfa7be2d76ca1e0aacfa363482e1bf8ab5042a
- https://git.kernel.org/stable/c/661ff9c0cfbe07f8eed920dde9f7781491738207
- https://git.kernel.org/stable/c/c710e9bf38e4e71a8db85d26a0f70c0674664207
- https://git.kernel.org/stable/c/4ae701848e4ba9e9713375fb7d82218cbd309da2
- https://git.kernel.org/stable/c/77dbb248a5cc7a5270cd37bbb0b635bf059a872a
- https://git.kernel.org/stable/c/f30415929be8aeb002d557c8d3f7ab2d2188003a