CVE-2026-74737net: ethernet: ti: am65-cpsw-nuss: Fix port_id extraction from SRC TAG
Updated under an hour ago ()
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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.
- CVSS
- 9.8 CRITICAL (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- Weakness (CWE)
- Not given
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Linux
- NVD analysis
- Received
- Record last updated
- Aug 27, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Linux Linux linux:linux (from the name) | 93a76530316a3d8cc2d82c3deca48424fee92100 builds before 14fc40bf28390e0ebee6a072457c36b82c614100; 93a76530316a3d8cc2d82c3deca48424fee92100 builds before 1c0e35ce761131f82062222779d8574849790892; 93a76530316a3d8cc2d82c3deca48424fee92100 builds before 9a220225efd6f58350bbb53fe70bdec08519267f; from 93a76530316a3d8cc2d82c3deca48424fee92100 before 551688b410d3fb0dae7739724422f268cd9446d6; 93a76530316a3d8cc2d82c3deca48424fee92100 builds before 46a8e084a159e638ac2728e96980b65d752d65fd; 93a76530316a3d8cc2d82c3deca48424fee92100 builds before 72e4e3d7efc3b7d85f86abbe8b94f8e45074abe3; from 93a76530316a3d8cc2d82c3deca48424fee92100 before 914e0100df3435bd14d09f397238e891cf9b7dce; 93a76530316a3d8cc2d82c3deca48424fee92100 builds before 36a05d2820077bb3955acb8111e1041d39148037 | CNA record |
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
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.