Description (CNA)
In the Linux kernel, the following vulnerability has been resolved: ipvlan: inherit needed_headroom and needed_tailroom from phy_dev ipvlan devices inherit hard_header_len from phy_dev during ipvlan_init(), but leave needed_headroom and needed_tailroom set to 0. When the underlying phy_dev (or stacked lower device) requires extra headroom or tailroom for headers/trailers (e.g. macsec, ipsec, wireguard, tunnels, or veth with rx headroom), upper layers calculating packet headroom and tailroom fail to reserve sufficient space. This can result in reallocation overhead, skb headroom underflows, or KASAN slab-use-after-free crashes when dev_hard_header() / ipvlan_hard_header() prepends header data or when lower devices append tailroom. Fix this by: 1. Inheriting needed_headroom and needed_tailroom from phy_dev in ipvlan_init(). 2. Propagating needed_headroom and needed_tailroom updates to attached ipvlans in ipvlan_device_event() when receiving NETDEV_FEAT_CHANGE events.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected 2ad7bf3638411cb547f2823df08166c13ab04269 before af602c4d0ee548da18e2409b4b4da1079625a372; affected 2ad7bf3638411cb547f2823df08166c13ab04269 before f3c17ff65f54781cde696e16a6c577615ed735aa; affected 2ad7bf3638411cb547f2823df08166c13ab04269 before c0fbe31f6b20ade0465130685859faa5c86fda59; affected 2ad7bf3638411cb547f2823df08166c13ab04269 before 5f33188457bbcc1b11ca87084037963c516ed3d9; affected 2ad7bf3638411cb547f2823df08166c13ab04269 before 5c2ca77212eb38559b0353b8363b7a84f4b019dd; affected 2ad7bf3638411cb547f2823df08166c13ab04269 before e16e960d55a40d36bd7c2494cc005e757dc9a1ef |
| Linux / Linux | affected 3.19; unaffected 0 before 3.19; unaffected 6.1.184 through 6.1.*; unaffected 6.6.153 through 6.6.*; unaffected 6.12.105 through 6.12.*; unaffected 6.18.46 through 6.18.*; unaffected 7.1.10 through 7.1.*; unaffected 7.2 through * |
CWE
No CWE identifiers supplied.
References
- https://git.kernel.org/stable/c/af602c4d0ee548da18e2409b4b4da1079625a372
- https://git.kernel.org/stable/c/f3c17ff65f54781cde696e16a6c577615ed735aa
- https://git.kernel.org/stable/c/c0fbe31f6b20ade0465130685859faa5c86fda59
- https://git.kernel.org/stable/c/5f33188457bbcc1b11ca87084037963c516ed3d9
- https://git.kernel.org/stable/c/5c2ca77212eb38559b0353b8363b7a84f4b019dd
- https://git.kernel.org/stable/c/e16e960d55a40d36bd7c2494cc005e757dc9a1ef
ADP enrichment
No English description supplied.
No references supplied.