CVE-2026-89615
CVE CVE-2026-89615EUVD EUVD-2026-76527Published 2026-09-11T19:45:15.000ZLast changed 2026-09-14T12:01:31.000ZCVSS 8.4
What the advisory describes
In the Linux kernel, the following vulnerability has been resolved: fs/ntfs3: bound page_lcns[] index by the log record The copy_lcns loop and the redo shorten loop index page_lcns[] at j + i, where i runs up to the log record's lcns_follow. That count is checked only against the record's own length, not the target entry, so check_dp_table() (which validates the entry's lcns_follow) does not cover it: the copy_lcns entry may even be freshly allocated after that check, and find_dp() bounds j but not i. A crafted record thus overflows page_lcns[] of an otherwise valid entry. Add dp_range_ok() and reject, before each loop, any record whose run does not fit the entry. These are the only two page_lcns[] accesses indexed by the record rather than the entry, so together with the entry validation every access is now bounded. [almaz.alexandrovich@paragon-software.com: original patch contained changes to the problem already handled, applied partly]
Source: EUVD (ENISA), in the words of the advisory.
Products the advisory names
These come from the advisory itself, not from any check we performed.
- Linux — Linux b46acd6a6a627d876898e1c84d3f84902264b445 <31fdd11f75da9823500168cecb07aa45130915a3; b46acd6a6a627d876898e1c84d3f84902264b445 <f4c1bc6d7331f344ffcea93c2a37badcbe15baa6; 5.15; patch: 6.6.157; b46acd6a6a627d876898e1c84d3f84902264b445 <bb742d1030864c0fe140666f639428ba4e90b2ca; patch: 7.3-rc1; b46acd6a6a627d876898e1c84d3f84902264b445 <6f7b9dbdc1b7520206abce0049bdd143eb536e75; b46acd6a6a627d876898e1c84d3f84902264b445 <7ccb94901f38a062034b56b43c774050b113758f; patch: 6.12.109; patch: 5.15.221; patch: 0; patch: 7.2.4; b46acd6a6a627d876898e1c84d3f84902264b445 <61ca8cbbf68f77f25b699ed4358bd232f94ed43b; patch: 6.1.188; patch: 6.18.50; b46acd6a6a627d876898e1c84d3f84902264b445 <1135ebc225996b3ac1a295652b19a0a706737a6c
The versions shown are the advisory's own. Patchlage compares no version numbers and derives no judgement from them — which version is installed is something a person has to look up.
Carried in the product catalogue
An estate covering these products can be recorded in Patchlage. An advisory about them appears in the next morning's situation report.
- Linux — Linux
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