CVE-2026-98027
CVE.org · Published
- Record status
- Published
- Identifier year (not publication year)
- 2026
- Source publication
- Source updated
- Imported by cveboard
- Source snapshot
- cve_2026-10-24_midnight_baseline ·
CNA source text (English)
net: dsa: mv88e6xxx: bound the policy rule dump by the caller's buffer size
In the Linux kernel, the following vulnerability has been resolved: net: dsa: mv88e6xxx: bound the policy rule dump by the caller's buffer size mv88e6xxx_get_rxnfc() uses rxnfc->rule_cnt as the write index while dumping the policy IDR, clobbering the input value before it has been looked at. That input is the number of entries the caller had room for. ETHTOOL_GRXCLSRLALL requires no CAP_NET_ADMIN and the ioctl sizes the buffer from the rule_cnt userspace passes in, so once an admin has installed policy rules any user can ask for fewer slots than there are rules and run off the end of the allocation. A rule_cnt of 0 leaves the buffer pointer NULL and the walk dereferences it. Count into a local so the caller's limit survives the walk, and stop with -EMSGSIZE once it is reached.
Scoped product and version facts
Fix information unknown; no fixed version is derived here. Missing information does not prove that no fix exists.
Exploitation unknown; this catalogue does not assess exploitation.
Linux
- Vendor
- Linux
- Product
- Linux
- Platforms
- Unknown
- Default status
unaffected
| Version (version) | Status (status) | Version scheme (versionType) | Exclusive end (lessThan) | Inclusive end (lessThanOrEqual) | Status changes (at → status) |
|---|---|---|---|---|---|
| da7dc87553046a43be1620a783ce3d9f6583d322 | affected | git | 7e4bfc5f0b66feb22cba821303fc25ca22cd0887 | Unavailable | None listed |
| da7dc87553046a43be1620a783ce3d9f6583d322 | affected | git | 01124cd2cf4b71755b1130ac82d78dcfbd5d69e3 | Unavailable | None listed |
| da7dc87553046a43be1620a783ce3d9f6583d322 | affected | git | 609c4378f212cf580aae02250f1146caf63d873f | Unavailable | None listed |
| da7dc87553046a43be1620a783ce3d9f6583d322 | affected | git | c5b5c52b6524c9fb50def2260baac745c095ec3a | Unavailable | None listed |
| da7dc87553046a43be1620a783ce3d9f6583d322 | affected | git | 44cd4674d9aa5bdf793b8a8b481c9e8536ed6070 | Unavailable | None listed |
| da7dc87553046a43be1620a783ce3d9f6583d322 | affected | git | 7a683c2b062810bca203e41866389daf387c235b | Unavailable | None listed |
| da7dc87553046a43be1620a783ce3d9f6583d322 | affected | git | cda5ac8fe8ac8e80b1703ebb8c4250726fc19739 | Unavailable | None listed |
| da7dc87553046a43be1620a783ce3d9f6583d322 | affected | git | b1fffc273112e7284c5b705e186b43b5770cd3d5 | Unavailable | None listed |
Linux
- Vendor
- Linux
- Product
- Linux
- Platforms
- Unknown
- Default status
affected
| Version (version) | Status (status) | Version scheme (versionType) | Exclusive end (lessThan) | Inclusive end (lessThanOrEqual) | Status changes (at → status) |
|---|---|---|---|---|---|
| 5.4 | affected | Unavailable | Unavailable | Unavailable | None listed |
| 0 | unaffected | semver | 5.4 | Unavailable | None listed |
| 5.10.271 | unaffected | semver | Unavailable | 5.10.* | None listed |
| 5.15.222 | unaffected | semver | Unavailable | 5.15.* | None listed |
| 6.1.189 | unaffected | semver | Unavailable | 6.1.* | None listed |
| 6.6.158 | unaffected | semver | Unavailable | 6.6.* | None listed |
| 6.12.111 | unaffected | semver | Unavailable | 6.12.* | None listed |
| 6.18.53 | unaffected | semver | Unavailable | 6.18.* | None listed |
| 7.2.7 | unaffected | semver | Unavailable | 7.2.* | None listed |
| 7.3 | unaffected | original_commit_for_fix | Unavailable | * | None listed |