DEBIAN-CVE-2023-53240

In the Linux kernel, the following vulnerability has been resolved: xsk: check IFFUP earlier in Tx path Xsk Tx can be triggered via either sendmsg or poll syscalls. These two paths share a call to common function xskxmit which has two sanity checks within. A pseudo code example to show the two...

CVE-2023-53240 xsk: check IFF_UP earlier in Tx path

In the Linux kernel, the following vulnerability has been resolved: xsk: check IFFUP earlier in Tx path Xsk Tx can be triggered via either sendmsg or poll syscalls. These two paths share a call to common function xskxmit which has two sanity checks within. A pseudo code example to show the two...

CVE-2023-53240

The CVE-2023-53240 issue concerns the Linux kernel’s xsk path. If a napi id is marked on an interface not brought up, xsk_sendmsg /xsk_poll can call xsk_xmit(), which may dereference a NULL pointers to xs->dev when IFF_UP is not set, causing a kernel NULL pointer dereference. The fix restructu...