net: ethernet: ti: am65-cpsw-nuss: Fix port_id extraction from SRC TAG

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-74737
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-08-26 15:16:52 UTC
Updated2026-08-27 06:17:22 UTC
DescriptionIn 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.

Risk And Classification

Primary CVSS: v3.1 9.8 CRITICAL from 416baaa9-dc9f-4396-8d5f-8c081fb06d67

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS: 0.005590000 probability, percentile 0.441730000 (date 2026-08-27)

VersionSourceTypeScoreSeverityVector
3.1416baaa9-dc9f-4396-8d5f-8c081fb06d67Secondary9.8CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
3.1CNADECLARED9.8CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Linux Linux affected 93a76530316a3d8cc2d82c3deca48424fee92100 14fc40bf28390e0ebee6a072457c36b82c614100 git Not specified
CNA Linux Linux affected 93a76530316a3d8cc2d82c3deca48424fee92100 1c0e35ce761131f82062222779d8574849790892 git Not specified
CNA Linux Linux affected 93a76530316a3d8cc2d82c3deca48424fee92100 9a220225efd6f58350bbb53fe70bdec08519267f git Not specified
CNA Linux Linux affected 93a76530316a3d8cc2d82c3deca48424fee92100 551688b410d3fb0dae7739724422f268cd9446d6 git Not specified
CNA Linux Linux affected 93a76530316a3d8cc2d82c3deca48424fee92100 46a8e084a159e638ac2728e96980b65d752d65fd git Not specified
CNA Linux Linux affected 93a76530316a3d8cc2d82c3deca48424fee92100 72e4e3d7efc3b7d85f86abbe8b94f8e45074abe3 git Not specified
CNA Linux Linux affected 93a76530316a3d8cc2d82c3deca48424fee92100 914e0100df3435bd14d09f397238e891cf9b7dce git Not specified
CNA Linux Linux affected 93a76530316a3d8cc2d82c3deca48424fee92100 36a05d2820077bb3955acb8111e1041d39148037 git Not specified
CNA Linux Linux affected 5.7 Not specified
CNA Linux Linux unaffected 5.7 semver Not specified
CNA Linux Linux unaffected 5.10.266 5.10.* semver Not specified
CNA Linux Linux unaffected 5.15.217 5.15.* semver Not specified
CNA Linux Linux unaffected 6.1.184 6.1.* semver Not specified
CNA Linux Linux unaffected 6.6.153 6.6.* semver Not specified
CNA Linux Linux unaffected 6.12.105 6.12.* semver Not specified
CNA Linux Linux unaffected 6.18.46 6.18.* semver Not specified
CNA Linux Linux unaffected 7.1.10 7.1.* semver Not specified
CNA Linux Linux unaffected 7.2 * original_commit_for_fix Not specified

References

ReferenceSourceLinkTags
git.kernel.org/stable/c/72e4e3d7efc3b7d85f86abbe8b94f8e45074abe3 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/1c0e35ce761131f82062222779d8574849790892 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/36a05d2820077bb3955acb8111e1041d39148037 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/46a8e084a159e638ac2728e96980b65d752d65fd 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/551688b410d3fb0dae7739724422f268cd9446d6 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/914e0100df3435bd14d09f397238e891cf9b7dce 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/14fc40bf28390e0ebee6a072457c36b82c614100 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/9a220225efd6f58350bbb53fe70bdec08519267f 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
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