CVE-2023-53863

CVE-2023-53863 : In the Linux kernel, netlink fdb dumps previously hard-coded device address length using ETH_ALEN instead of the device’s addr_len. This can expose an information leak (notably kernel-infoleak paths) in scenarios where a netdev device reports an addr_len different from six. The a...

CVE-2023-53863 netlink: do not hard code device address lenth in fdb dumps

In the Linux kernel, the following vulnerability has been resolved: netlink: do not hard code device address lenth in fdb dumps syzbot reports that some netdev devices do not have a six bytes address 1 Replace ETHALEN by dev-addrlen. 1 Case of a device where dev-addrlen = 4 BUG: KMSAN:...

CVE-2023-53863

In the Linux kernel, the following vulnerability has been resolved: netlink: do not hard code device address lenth in fdb dumps syzbot reports that some netdev devices do not have a six bytes address 1 Replace ETHALEN by dev-addrlen. 1 Case of a device where dev-addrlen = 4 BUG: KMSAN:...

CVE-2023-53853 netlink: annotate accesses to nlk->cb_running

In the Linux kernel, the following vulnerability has been resolved: netlink: annotate accesses to nlk-cbrunning Both netlinkrecvmsg and netlinknativeseqshow read nlk-cbrunning locklessly. Use READONCE there. Add corresponding WRITEONCE to netlinkdump and netlinkdumpstart syzbot reported: BUG:...

CVE-2023-53853

In the Linux kernel, the following vulnerability has been resolved: netlink: annotate accesses to nlk-cbrunning Both netlinkrecvmsg and netlinknativeseqshow read nlk-cbrunning locklessly. Use READONCE there. Add corresponding WRITEONCE to netlinkdump and netlinkdumpstart syzbot reported: BUG:...

CVE-2023-53853

CVE-2023-53853 is a Linux kernel vulnerability in the netlink path where reads of cb_running were performed locklessly in netlink_recvmsg() and netlink_native_seq_show(), causing a data race with __netlink_dump_start() and netlink_dump_start. The fix, as documented in multiple advisories, adds pr...

CVE-2023-53853 netlink: annotate accesses to nlk->cb_running

In the Linux kernel, the following vulnerability has been resolved: netlink: annotate accesses to nlk-cbrunning Both netlinkrecvmsg and netlinknativeseqshow read nlk-cbrunning locklessly. Use READONCE there. Add corresponding WRITEONCE to netlinkdump and netlinkdumpstart syzbot reported: BUG:...

CVE-2023-53843 net: openvswitch: reject negative ifindex

In the Linux kernel, the following vulnerability has been resolved: net: openvswitch: reject negative ifindex Recent changes in net-next commit 759ab1edb56c "net: store netdevs in an xarray" refactored the handling of pre-assigned ifindexes and let syzbot surface a latent problem in ovs. ovs does...

CVE-2023-53843

In the Linux kernel, the following vulnerability has been resolved: net: openvswitch: reject negative ifindex Recent changes in net-next commit 759ab1edb56c "net: store netdevs in an xarray" refactored the handling of pre-assigned ifindexes and let syzbot surface a latent problem in ovs. ovs does...

CVE-2023-53843 net: openvswitch: reject negative ifindex

In the Linux kernel, the following vulnerability has been resolved: net: openvswitch: reject negative ifindex Recent changes in net-next commit 759ab1edb56c "net: store netdevs in an xarray" refactored the handling of pre-assigned ifindexes and let syzbot surface a latent problem in ovs. ovs does...

CVE-2023-53843

CVE-2023-53843: In the Linux kernel, net: openvswitch: reject negative ifindex has been fixed. The issue arose from net-next changes that reworked pre‑assigned ifindexes and allowed ovs netdev ports to be created with negative ifindex values, which could be surfaced via certain commands and tools...

CVE-2023-53824 netlink: annotate lockless accesses to nlk->max_recvmsg_len

In the Linux kernel, the following vulnerability has been resolved: netlink: annotate lockless accesses to nlk-maxrecvmsglen syzbot reported a data-race in data-race in netlinkrecvmsg 1 Indeed, netlinkrecvmsg can be run concurrently, and netlinkdump also needs protection. 1 BUG: KCSAN: data-race ...

CVE-2023-53824

CVE-2023-53824 affects the Linux kernel netlink path. A data-race exists in netlink_recvmsg() where concurrent execution with netlink_dump() was not protected; KCSAN reported reads/writes of an 8-byte flag (nlk->max_recvmsg_len). The issue has been resolved in the kernel (security advisory ref...

CVE-2023-53824 netlink: annotate lockless accesses to nlk->max_recvmsg_len

In the Linux kernel, the following vulnerability has been resolved: netlink: annotate lockless accesses to nlk-maxrecvmsglen syzbot reported a data-race in data-race in netlinkrecvmsg 1 Indeed, netlinkrecvmsg can be run concurrently, and netlinkdump also needs protection. 1 BUG: KCSAN: data-race ...

CVE-2023-53824

In the Linux kernel, the following vulnerability has been resolved: netlink: annotate lockless accesses to nlk-maxrecvmsglen syzbot reported a data-race in data-race in netlinkrecvmsg 1 Indeed, netlinkrecvmsg can be run concurrently, and netlinkdump also needs protection. 1 BUG: KCSAN: data-race ...

CVE-2022-50679 i40e: Fix DMA mappings leak

In the Linux kernel, the following vulnerability has been resolved: i40e: Fix DMA mappings leak During reallocation of RX buffers, new DMA mappings are created for those buffers. steps for reproduction: while : do for i=0; i=8160; i=i+32 do ethtool -G enp130s0f0 rx $i tx $i sleep 0.5 ethtool -g...

CVE-2022-50656

In the Linux kernel, the following vulnerability has been resolved: nfc: pn533: Clear nfctarget before being used Fix a slab-out-of-bounds read that occurs in nlaput called from nfcgenlsendtarget when target-sensbreslen, which is duplicated from an nfctarget in pn533, is too large as the nfctarge...

CVE-2022-50656 nfc: pn533: Clear nfc_target before being used

In the Linux kernel, the following vulnerability has been resolved: nfc: pn533: Clear nfctarget before being used Fix a slab-out-of-bounds read that occurs in nlaput called from nfcgenlsendtarget when target-sensbreslen, which is duplicated from an nfctarget in pn533, is too large as the nfctarge...

CVE-2022-50656 nfc: pn533: Clear nfc_target before being used

In the Linux kernel, the following vulnerability has been resolved: nfc: pn533: Clear nfctarget before being used Fix a slab-out-of-bounds read that occurs in nlaput called from nfcgenlsendtarget when target-sensbreslen, which is duplicated from an nfctarget in pn533, is too large as the nfctarge...

CVE-2022-50651

In the Linux kernel, the following vulnerability has been resolved: ethtool: eeprom: fix null-deref on genlinfo in dump The similar fix as commit 46cdedf2a0fa "ethtool: pse-pd: fix null-deref on genlinfo in dump" is also needed for ethtool eeprom...