Description (CNA)
In the Linux kernel, the following vulnerability has been resolved: fs/ntfs3: reject index allocation if $BITMAP is empty but blocks exist Index allocation requires at least one bit in the $BITMAP attribute to track usage of index entries. If the bitmap is empty while index blocks are already present, this reflects on-disk corruption. syzbot triggered this condition using a malformed NTFS image. During a rename() operation involving a long filename (which spans multiple index entries), the empty bitmap allowed the name to be added without valid tracking. Subsequent deletion of the original entry failed with -ENOENT, due to unexpected index state. Reject such cases by verifying that the bitmap is not empty when index blocks exist.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected b35a50d639ca5259466ef5fea85529bb4fb17d5b before 978aac54e93ea35aab20b32ae393d3d33964e7ae; affected 3ed2cc6a6e93fbeb8c0cafce1e7fb1f64a331dcc before be66551da203862c689c12e1d35ce87217c017c1; affected d99208b91933fd2a58ed9ed321af07dacd06ddc3 before 039ddf353cc33f6546a87ec1ac3210637d714bec; affected d99208b91933fd2a58ed9ed321af07dacd06ddc3 before 0dc7117da8f92dd5fe077d712a756eccbe377d40; affected 358d4f821c03add421a4c49290538a705852ccf1; affected a285395020780adac1ffbc844069c3d700bf007a; affected 6.6.102 before 6.6.112; affected 6.12.42 before 6.12.53; affected 6.15.10 before 6.16; affected 6.16.1 before 6.17 |
| Linux / Linux | affected 6.17; unaffected 0 before 6.17; unaffected 6.6.112 through 6.6.*; unaffected 6.12.53 through 6.12.*; unaffected 6.17.3 through 6.17.*; unaffected 6.18 through * |
CWE
No CWE identifiers supplied.