CVSS 3.1
Вероятност да бъде експлоатирана в следващите 30 дни (EPSS)
Атакува се
Време до експлоатация
Атакува се локално, без особени условия, с обикновен потребителски 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: fs/ntfs3: bound attr_off in UpdateResidentValue against data_off In do_action()'s UpdateResidentValue case (fslog.c:3307), lrh->attr_off and lrh->redo_len come from the on-disk LRH. When they satisfy aoff + dlen < attr->res.data_off, the assignment attr->res.data_size = cpu_to_le32(aoff + dlen - data_off); underflows to ~4 GiB (e.g. 0xFFFFFFF9 when aoff=0x10, dlen=1, data_off=0x18). Subsequent code that reads attr->res.data_size to walk the resident attribute payload would then read up to 4 GiB past the 1024-byte MFT record allocation. The existing mi_enum_attr() defense in fs/ntfs3/record.c:287 catches the corrupted data_size on the next attribute walk and fails the mount, but only on the path that walks all attributes. A read site that picks an attribute by name and reads its data_size without re-validating is not covered. Validate aoff against data_off and asize at the source. Reproduced under UML+KASAN on mainline 8d90b09e6741 via pr_warn-only probe: with aoff=0x10 and data_off=0x18, the post-assignment data_size is 0xfffffff9 (mount then fails at -22 from mi_enum_attr). [[email protected]: clang-formatted the changes]
Засегнати продукти
- Linux Linux: b46acd6a6a627d876898e1c84d3f84902264b445 преди ab8761676d638c5be170aaf91b7ffdd451236616; b46acd6a6a627d876898e1c84d3f84902264b445 преди 53c12f178f584dc5f836ffe2782138a6e9348ed9; b46acd6a6a627d876898e1c84d3f84902264b445 преди 546518468e6c9ea469669eef78f8cc380ad6e2ca; b46acd6a6a627d876898e1c84d3f84902264b445 преди 97758fd9756b5f09e9ddc6a5f6a569041acc8421; b46acd6a6a627d876898e1c84d3f84902264b445 преди 50b5e83384e7fed3d11d18b79ff350e9d6d89861; b46acd6a6a627d876898e1c84d3f84902264b445 преди a89c66674283a0293c0f266dc57087a6114371a3; b46acd6a6a627d876898e1c84d3f84902264b445 преди d1570c48f49a693974d000251030370ee2e83539
- Linux Linux: 5.15; преди 5.15; 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
- 15 август 2026 Публикувано
Други уязвимости в Linux Linux
Първоизточници
- https://www.cve.org/CVERecord?id=CVE-2026-72195
- https://nvd.nist.gov/vuln/detail/CVE-2026-72195
- https://git.kernel.org/stable/c/ab8761676d638c5be170aaf91b7ffdd451236616
- https://git.kernel.org/stable/c/53c12f178f584dc5f836ffe2782138a6e9348ed9
- https://git.kernel.org/stable/c/546518468e6c9ea469669eef78f8cc380ad6e2ca
- https://git.kernel.org/stable/c/97758fd9756b5f09e9ddc6a5f6a569041acc8421
- https://git.kernel.org/stable/c/50b5e83384e7fed3d11d18b79ff350e9d6d89861
- https://git.kernel.org/stable/c/a89c66674283a0293c0f266dc57087a6114371a3
- https://git.kernel.org/stable/c/d1570c48f49a693974d000251030370ee2e83539