Description
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 products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
Linux Linux
Default version status: unaffected
ee4af50ca94f58afc3532662779b9cf80bbe27c8 to < ad3c0c4400686f6f37b382aaa48fac2b9aefccbeaffectedee4af50ca94f58afc3532662779b9cf80bbe27c8 to < 68013a9bd4c01acd42073715f00e1a1992f089eeaffectedee4af50ca94f58afc3532662779b9cf80bbe27c8 to < e8474cfbac9ada2cdaa4eaedec22aadfa0f58559affectedee4af50ca94f58afc3532662779b9cf80bbe27c8 to < 058b451b1039f056d1362c4fec2229e522366ab0affectedee4af50ca94f58afc3532662779b9cf80bbe27c8 to < b5597bb83fc37b5b5da74a4453fa920b932cf39aaffectedee4af50ca94f58afc3532662779b9cf80bbe27c8 to < 73df74544b55241dca5dd788523e6f5f10bd2b9baffectedee4af50ca94f58afc3532662779b9cf80bbe27c8 to < 08fa5d818e5bf53c7ca234d88ba334f32004e9b6affectedee4af50ca94f58afc3532662779b9cf80bbe27c8 to < 08841b06fa64d8edbd1a21ca6e613420c90cc4b8affected7f401f160a9c7a1ff84ba3cb9b2f636d1f5cfb6baffected4.18.7 to < 4.19affected
Linux Linux
Default version status: affected
4.19affected0 to < 4.19unaffected5.10.259 to ≤ 5.10.*unaffected5.15.210 to ≤ 5.15.*unaffected6.1.176 to ≤ 6.1.*unaffected6.6.140 to ≤ 6.6.*unaffected6.12.88 to ≤ 6.12.*unaffected6.18.57 to ≤ 6.18.*unaffected7.0.4 to ≤ 7.0.*unaffected7.1 to ≤ *unaffected
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 ↗
- https://cert-portal.siemens.com/productcert/html/ssa-784472.html ↗