CVSS 3.1
Вероятност да бъде експлоатирана в следващите 30 дни (EPSS)
Атакува се
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: tipc: fix double-free in tipc_buf_append() tipc_msg_validate() can potentially reallocate the skb it is validating, freeing the old one. In tipc_buf_append(), it was being called with a pointer to a local variable which was a copy of the caller's skb pointer. If the skb was reallocated and validation subsequently failed, the error handling path would free the original skb pointer, which had already been freed, leading to double-free. Fix this by checking if head now points to a newly allocated reassembled skb. If it does, reassign *headbuf for later freeing operations.
Засегнати продукти
- Linux Linux: d618d09a68e4eed7a435beb2e355250f6f40664a преди a438975a6dcdbd70865978c021650d1485586f0b; d618d09a68e4eed7a435beb2e355250f6f40664a преди 4ee4deadaae7cb2e3d53af0fc889cf92a73413c0; d618d09a68e4eed7a435beb2e355250f6f40664a преди d3556656c6daebf8def751c7e71d11dd0a180d24; d618d09a68e4eed7a435beb2e355250f6f40664a преди 0274f24485fc38032d4093e463dc3ff5c7a667c9; d618d09a68e4eed7a435beb2e355250f6f40664a преди 4d104882bc815d4ec666ace9155f5f52715879a6; d618d09a68e4eed7a435beb2e355250f6f40664a преди 1d5e589055880fae229e229e1929e087dbe08cf3; d618d09a68e4eed7a435beb2e355250f6f40664a преди 29940fff14110ca48c5ccc168d121665b51bb778; d618d09a68e4eed7a435beb2e355250f6f40664a преди d293ca716e7d5dffdaecaf6b9b2f857a33dc3d3a
- Linux Linux: 4.15; преди 4.15; 5.10.258 до 5.10.*; 5.15.209 до 5.15.*; 6.1.175 до 6.1.*; 6.6.141 до 6.6.*; 6.12.91 до 6.12.*; 6.18.33 до 6.18.*; 7.0.10 до 7.0.*; 7.1 до *
- Red Hat Red Hat Enterprise Linux 10: 0:6.12.0-211.40.1.el10_2 преди *
- Red Hat Red Hat Enterprise Linux 8: 0:4.18.0-553.147.1.rt7.488.el8_10 преди *
- Red Hat Red Hat Enterprise Linux 9: 0:5.14.0-687.33.1.el9_8 преди *
- Red Hat Red Hat Enterprise Linux 6
- Red Hat Red Hat Enterprise Linux 7
Вид слабост
История
- 24 юни 2026 Публикувано
Други уязвимости в Linux Linux
Първоизточници
- https://www.cve.org/CVERecord?id=CVE-2026-52993
- https://nvd.nist.gov/vuln/detail/CVE-2026-52993
- https://git.kernel.org/stable/c/a438975a6dcdbd70865978c021650d1485586f0b
- https://git.kernel.org/stable/c/4ee4deadaae7cb2e3d53af0fc889cf92a73413c0
- https://git.kernel.org/stable/c/d3556656c6daebf8def751c7e71d11dd0a180d24
- https://git.kernel.org/stable/c/0274f24485fc38032d4093e463dc3ff5c7a667c9
- https://git.kernel.org/stable/c/4d104882bc815d4ec666ace9155f5f52715879a6
- https://git.kernel.org/stable/c/1d5e589055880fae229e229e1929e087dbe08cf3
- https://git.kernel.org/stable/c/29940fff14110ca48c5ccc168d121665b51bb778
- https://git.kernel.org/stable/c/d293ca716e7d5dffdaecaf6b9b2f857a33dc3d3a
- https://access.redhat.com/security/cve/CVE-2026-52993
- https://bugzilla.redhat.com/show_bug.cgi?id=2492437
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-52993.json
- https://access.redhat.com/errata/RHSA-2026:47017
- https://access.redhat.com/errata/RHSA-2026:49212
- https://access.redhat.com/errata/RHSA-2026:45115
- https://access.redhat.com/errata/RHSA-2026:45116