Description
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 products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
Linux Linux
Default version status: unaffected
76c8764ef36a5d37ea2e551bda28ac7f028383ba to < 56b4ad500fd1282ef04db3c4beae5b54ab093a53affected76c8764ef36a5d37ea2e551bda28ac7f028383ba to < 51a1d9836acc76a1bd16170b2f4b35f11036593faffected76c8764ef36a5d37ea2e551bda28ac7f028383ba to < 67e4b283de36d9eebf95acdea5d6674b6ef4b2f4affected76c8764ef36a5d37ea2e551bda28ac7f028383ba to < 24041543da8cd84eb5d8ae738c534372fff54820affected
Linux Linux
Default version status: affected
6.10affected0 to < 6.10unaffected6.12.97 to ≤ 6.12.*unaffected6.18.40 to ≤ 6.18.*unaffected7.1.5 to ≤ 7.1.*unaffected7.2 to ≤ *unaffected