Description (CNA)
In the Linux kernel, the following vulnerability has been resolved: udf: fix partition descriptor append bookkeeping Mounting a crafted UDF image with repeated partition descriptors can trigger a heap out-of-bounds write in part_descs_loc[]. handle_partition_descriptor() deduplicates entries by partition number, but appended slots never record partnum. As a result duplicate Partition Descriptors are appended repeatedly and num_part_descs keeps growing. Once the table is full, the growth path still sizes the allocation from partnum even though inserts are indexed by num_part_descs. If partnum is already aligned to PART_DESC_ALLOC_STEP, ALIGN(partnum, step) can keep the old capacity and the next append writes past the end of the table. Store partnum in the appended slot and size growth from the next append count so deduplication and capacity tracking follow the same model.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected ee4af50ca94f58afc3532662779b9cf80bbe27c8 before ad3c0c4400686f6f37b382aaa48fac2b9aefccbe; affected ee4af50ca94f58afc3532662779b9cf80bbe27c8 before 68013a9bd4c01acd42073715f00e1a1992f089ee; affected ee4af50ca94f58afc3532662779b9cf80bbe27c8 before e8474cfbac9ada2cdaa4eaedec22aadfa0f58559; affected ee4af50ca94f58afc3532662779b9cf80bbe27c8 before 058b451b1039f056d1362c4fec2229e522366ab0; affected ee4af50ca94f58afc3532662779b9cf80bbe27c8 before b5597bb83fc37b5b5da74a4453fa920b932cf39a; affected ee4af50ca94f58afc3532662779b9cf80bbe27c8 before 73df74544b55241dca5dd788523e6f5f10bd2b9b; affected ee4af50ca94f58afc3532662779b9cf80bbe27c8 before 08fa5d818e5bf53c7ca234d88ba334f32004e9b6; affected ee4af50ca94f58afc3532662779b9cf80bbe27c8 before 08841b06fa64d8edbd1a21ca6e613420c90cc4b8; affected 7f401f160a9c7a1ff84ba3cb9b2f636d1f5cfb6b; affected 4.18.7 before 4.19 |
| Linux / Linux | affected 4.19; unaffected 0 before 4.19; unaffected 5.10.259 through 5.10.*; unaffected 5.15.210 through 5.15.*; unaffected 6.1.176 through 6.1.*; unaffected 6.6.140 through 6.6.*; unaffected 6.12.88 through 6.12.*; unaffected 6.18.57 through 6.18.*; unaffected 7.0.4 through 7.0.*; unaffected 7.1 through * |
CWE
No CWE identifiers supplied.
References
- https://git.kernel.org/stable/c/ad3c0c4400686f6f37b382aaa48fac2b9aefccbe
- https://git.kernel.org/stable/c/68013a9bd4c01acd42073715f00e1a1992f089ee
- https://git.kernel.org/stable/c/e8474cfbac9ada2cdaa4eaedec22aadfa0f58559
- https://git.kernel.org/stable/c/058b451b1039f056d1362c4fec2229e522366ab0
- https://git.kernel.org/stable/c/b5597bb83fc37b5b5da74a4453fa920b932cf39a
- https://git.kernel.org/stable/c/73df74544b55241dca5dd788523e6f5f10bd2b9b
- https://git.kernel.org/stable/c/08fa5d818e5bf53c7ca234d88ba334f32004e9b6
- https://git.kernel.org/stable/c/08841b06fa64d8edbd1a21ca6e613420c90cc4b8
ADP enrichment
No English description supplied.
No English description supplied.
No references supplied.