Description
In the Linux kernel, the following vulnerability has been resolved: net: ethernet: ti: am65-cpsw-nuss: Fix port_id extraction from SRC TAG On the packet reception path, the ID of the MAC Port on which the packet was received, is embedded in the RX DMA Descriptor's metadata. The ID is extracted using the helper function cppi5_desc_get_tags_ids() which fills in the 16-bit Source Tag into the 'port_id' variable. However, it is only the lower 8-bits of the 16-bit Source Tag that represent the MAC Port ID, while the upper 8-bits are Hardware-Reserved and carry an arbitrary value. With the existing logic, sporadic kernel crash is observed due to the subsequent driver code accessing out-of-bound memory because of an invalid port_id. Hence, fix the port_id extraction logic to use only the lower 8-bits of the Source Tag as the MAC Port ID.
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
93a76530316a3d8cc2d82c3deca48424fee92100 to < 14fc40bf28390e0ebee6a072457c36b82c614100affected93a76530316a3d8cc2d82c3deca48424fee92100 to < 1c0e35ce761131f82062222779d8574849790892affected93a76530316a3d8cc2d82c3deca48424fee92100 to < 9a220225efd6f58350bbb53fe70bdec08519267faffected93a76530316a3d8cc2d82c3deca48424fee92100 to < 551688b410d3fb0dae7739724422f268cd9446d6affected93a76530316a3d8cc2d82c3deca48424fee92100 to < 46a8e084a159e638ac2728e96980b65d752d65fdaffected93a76530316a3d8cc2d82c3deca48424fee92100 to < 72e4e3d7efc3b7d85f86abbe8b94f8e45074abe3affected93a76530316a3d8cc2d82c3deca48424fee92100 to < 914e0100df3435bd14d09f397238e891cf9b7dceaffected93a76530316a3d8cc2d82c3deca48424fee92100 to < 36a05d2820077bb3955acb8111e1041d39148037affected
Linux Linux
Default version status: affected
5.7affected0 to < 5.7unaffected5.10.266 to ≤ 5.10.*unaffected5.15.217 to ≤ 5.15.*unaffected6.1.184 to ≤ 6.1.*unaffected6.6.153 to ≤ 6.6.*unaffected6.12.105 to ≤ 6.12.*unaffected6.18.46 to ≤ 6.18.*unaffected7.1.10 to ≤ 7.1.*unaffected7.2 to ≤ *unaffected
References
- https://git.kernel.org/stable/c/14fc40bf28390e0ebee6a072457c36b82c614100 ↗
- https://git.kernel.org/stable/c/1c0e35ce761131f82062222779d8574849790892 ↗
- https://git.kernel.org/stable/c/9a220225efd6f58350bbb53fe70bdec08519267f ↗
- https://git.kernel.org/stable/c/551688b410d3fb0dae7739724422f268cd9446d6 ↗
- https://git.kernel.org/stable/c/46a8e084a159e638ac2728e96980b65d752d65fd ↗
- https://git.kernel.org/stable/c/72e4e3d7efc3b7d85f86abbe8b94f8e45074abe3 ↗
- https://git.kernel.org/stable/c/914e0100df3435bd14d09f397238e891cf9b7dce ↗
- https://git.kernel.org/stable/c/36a05d2820077bb3955acb8111e1041d39148037 ↗