Description (CNA)
In the Linux kernel, the following vulnerability has been resolved: netlabel: validate unlabeled address and mask attribute lengths netlbl_unlabel_addrinfo_get() used the address attribute length to determine whether the attribute data could be read as an IPv4 or IPv6 address, but did not independently validate the corresponding mask attribute length. A crafted Generic Netlink request could therefore provide a valid IPv4/IPv6 address attribute with a shorter mask attribute, which would later be read as a full struct in_addr or struct in6_addr. NLA_BINARY policy lengths are maximum lengths by default, so use NLA_POLICY_EXACT_LEN() for the unlabeled IPv4/IPv6 address and mask attributes. This rejects short attributes during policy validation and also exposes the exact length requirements through policy introspection.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected 8cc44579d1bd77ba3a32f2cb76fd9669c229c5fd before 975a84fd741440853380d37465b6e226cf47254c; affected 8cc44579d1bd77ba3a32f2cb76fd9669c229c5fd before 672f0f3b8f875ffe6525a37847eafa7648c4c0c6; affected 8cc44579d1bd77ba3a32f2cb76fd9669c229c5fd before 95bda3eac0b1454c2cee98d58d9ba6dd8391e843; affected 8cc44579d1bd77ba3a32f2cb76fd9669c229c5fd before 07a18f5c90dd3d586b73242f5a5bbf0a72f2fdc6; affected 8cc44579d1bd77ba3a32f2cb76fd9669c229c5fd before 71c52da13c3737493b42d20d9f33de34e03b3156; affected 8cc44579d1bd77ba3a32f2cb76fd9669c229c5fd before 0c4bb32ad7fdc2dc6a8050f41eb04d4bda56b6c8; affected 8cc44579d1bd77ba3a32f2cb76fd9669c229c5fd before ccfe292a966079c61ea68a2da303b2a336170993; affected 8cc44579d1bd77ba3a32f2cb76fd9669c229c5fd before 9772589b57e44aedc240211c5c3f7a684a034d3a |
| Linux / Linux | affected 2.6.25; unaffected 0 before 2.6.25; unaffected 5.10.259 through 5.10.*; unaffected 5.15.210 through 5.15.*; unaffected 6.1.176 through 6.1.*; unaffected 6.6.143 through 6.6.*; unaffected 6.12.94 through 6.12.*; unaffected 6.18.36 through 6.18.*; unaffected 7.0.13 through 7.0.*; unaffected 7.1 through * |
CWE
No CWE identifiers supplied.
References
- https://git.kernel.org/stable/c/975a84fd741440853380d37465b6e226cf47254c
- https://git.kernel.org/stable/c/672f0f3b8f875ffe6525a37847eafa7648c4c0c6
- https://git.kernel.org/stable/c/95bda3eac0b1454c2cee98d58d9ba6dd8391e843
- https://git.kernel.org/stable/c/07a18f5c90dd3d586b73242f5a5bbf0a72f2fdc6
- https://git.kernel.org/stable/c/71c52da13c3737493b42d20d9f33de34e03b3156
- https://git.kernel.org/stable/c/0c4bb32ad7fdc2dc6a8050f41eb04d4bda56b6c8
- https://git.kernel.org/stable/c/ccfe292a966079c61ea68a2da303b2a336170993
- https://git.kernel.org/stable/c/9772589b57e44aedc240211c5c3f7a684a034d3a