CVE-2026-64137
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)
smb: client: require net admin for CIFS SWN netlink
In the Linux kernel, the following vulnerability has been resolved: smb: client: require net admin for CIFS SWN netlink CIFS_GENL_CMD_SWN_NOTIFY is the userspace witness-notify command. The intended sender is the cifs.witness helper, but the generic-netlink operation currently has no capability flag, so any local process can send RESOURCE_CHANGE or CLIENT_MOVE notifications to the in-kernel witness handler. The same family exposes CIFS_GENL_MCGRP_SWN without multicast-group capability flags. Register messages sent to that group include the witness registration id and, for NTLM-authenticated mounts, the username, domain, and password attributes copied from the CIFS session. An unprivileged local process should not be able to join that group and receive those messages. Require CAP_NET_ADMIN for incoming SWN_NOTIFY commands with GENL_ADMIN_PERM, and require CAP_NET_ADMIN over the network namespace for joining the SWN multicast group with GENL_MCAST_CAP_NET_ADMIN. The cifs.witness service runs with the privileges needed for both operations.
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) |
|---|---|---|---|---|---|
| fed979a7e082bd9f25f9002c3c4f8740dacd0bc8 | affected | git | 9cf7eb8919344932f909b2fac76296f7656fda8d | Unavailable | None listed |
| fed979a7e082bd9f25f9002c3c4f8740dacd0bc8 | affected | git | 9919021a3b7974ae66a5f9915e3a48c10cfd409b | Unavailable | None listed |
| fed979a7e082bd9f25f9002c3c4f8740dacd0bc8 | affected | git | 969bc6370334a5b4720c5470783295d6484bbc95 | Unavailable | None listed |
| fed979a7e082bd9f25f9002c3c4f8740dacd0bc8 | affected | git | a3238b09c58f323e40743ce174cd0ab81b5c09ed | Unavailable | None listed |
| fed979a7e082bd9f25f9002c3c4f8740dacd0bc8 | affected | git | a8d17d22db591099519a89f14dd24810daba74c3 | Unavailable | None listed |
| fed979a7e082bd9f25f9002c3c4f8740dacd0bc8 | affected | git | c2397b93fbb6f44a788fff30f99be2c20cc5e50f | Unavailable | None listed |
| fed979a7e082bd9f25f9002c3c4f8740dacd0bc8 | affected | git | d1ebfce2c1d161186a82e77590bf7da2ea1bce91 | 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) |
|---|---|---|---|---|---|
| 5.11 | affected | Unavailable | Unavailable | Unavailable | None listed |
| 0 | unaffected | semver | 5.11 | Unavailable | None listed |
| 5.15.210 | unaffected | semver | Unavailable | 5.15.* | None listed |
| 6.1.176 | unaffected | semver | Unavailable | 6.1.* | None listed |
| 6.6.143 | unaffected | semver | Unavailable | 6.6.* | None listed |
| 6.12.92 | unaffected | semver | Unavailable | 6.12.* | None listed |
| 6.18.34 | unaffected | semver | Unavailable | 6.18.* | None listed |
| 7.0.11 | unaffected | semver | Unavailable | 7.0.* | None listed |
| 7.1 | unaffected | original_commit_for_fix | Unavailable | * | None listed |