Description (CNA)
In the Linux kernel, the following vulnerability has been resolved: net: pfcp: allocate per-cpu tstats for PFCP netdevs PFCP uses dev_get_tstats64() as its ndo_get_stats64 callback, but pfcp_link_setup() does not request NETDEV_PCPU_STAT_TSTATS. The net core therefore leaves dev->tstats NULL for PFCP devices. Creating a PFCP rtnetlink device can immediately ask the new netdev for stats while building the RTM_NEWLINK notification. That reaches dev_get_tstats64() and dereferences the NULL dev->tstats pointer. Set pcpu_stat_type to NETDEV_PCPU_STAT_TSTATS during PFCP link setup so the net core allocates the storage expected by dev_get_tstats64().
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected 76c8764ef36a5d37ea2e551bda28ac7f028383ba before 56b4ad500fd1282ef04db3c4beae5b54ab093a53; affected 76c8764ef36a5d37ea2e551bda28ac7f028383ba before 51a1d9836acc76a1bd16170b2f4b35f11036593f; affected 76c8764ef36a5d37ea2e551bda28ac7f028383ba before 67e4b283de36d9eebf95acdea5d6674b6ef4b2f4; affected 76c8764ef36a5d37ea2e551bda28ac7f028383ba before 24041543da8cd84eb5d8ae738c534372fff54820 |
| Linux / Linux | affected 6.10; unaffected 0 before 6.10; unaffected 6.12.97 through 6.12.*; unaffected 6.18.40 through 6.18.*; unaffected 7.1.5 through 7.1.*; unaffected 7.2 through * |
CWE
No CWE identifiers supplied.