x86/bugs: Make Safe-RET robust against interrupt injection

In the Linux kernel, the following vulnerability has been resolved: x ...

Security update for the Linux Kernel (Live Patch 19 for SUSE Linux Enterprise 15 SP7)

Security update for the Linux Kernel (Live Patch 56 for SUSE Linux Enterprise 15 SP4)

Security update for the Linux Kernel (Live Patch 57 for SUSE Linux Enterprise 15 SP4)

Important: kernel security update

In the Linux kernel, the following vulnerability has been resolved: net: tap: set skb->dev before parsing virtio net header in tap_get_user_xdp() The commit 4f61f133f354 ("net: tap: NULL pointer derefence in dev_parse_header_protocol when skb->dev is null") fixed a crash in tap_get_user() by assigning skb->dev before calling tun_vnet_hdr_to_skb(). This is required because virtio_net_hdr_to_skb() may invoke dev_parse_header_protocol(), which dereferences skb->dev. Without the assignment, a NULL pointer dereference can occur. However, tap_get_user_xdp() still parses the virtio-net header before assigning skb->dev. When the vhost TX path passes an XDP buffer containing a GSO virtio-net header but the protocol is set to zero on purpose, tun_vnet_hdr_to_skb() can reach dev_parse_header_protocol() while skb->dev is still NULL, resulting in a crash. Fix this by looking up the tap device and assigning skb->dev before calling tun_vnet_hdr_to_skb(), matching the ordering already used in t...

Security update for the Linux Kernel (Live Patch 18 for SUSE Linux Enterprise 15 SP7)

Security update for the Linux Kernel (Live Patch 17 for SUSE Linux Enterprise 15 SP7)

Security update for the Linux Kernel (Live Patch 41 for SUSE Linux Enterprise 15 SP5)

Security update for the Linux Kernel (Live Patch 30 for SUSE Linux Enterprise 15 SP5)

Security update for the Linux Kernel (Live Patch 39 for SUSE Linux Enterprise 15 SP5)

Security update for the Linux Kernel (Live Patch 16 for SUSE Linux Enterprise 15 SP6)

Security update for the Linux Kernel RT (Live Patch 17 for SUSE Linux Enterprise 15 SP7)

Security update for the Linux Kernel (Live Patch 14 for SUSE Linux Enterprise 15 SP7)

Security update for the Linux Kernel (Live Patch 13 for SUSE Linux Enterprise 15 SP7)

Security update for the Linux Kernel RT (Live Patch 18 for SUSE Linux Enterprise 15 SP7)

Important: kernel security, bug fix, and enhancement update

In the Linux kernel, the following vulnerability has been resolved: x86/bugs: Make Safe-RET robust against interrupt injection An attacker injecting interrupts while the Safe-RET mitigation executes on machines affected by SRSO can neutralize the safe return sequence, potentially leading to data leakage through speculative execution. Fixup register state as if the Safe-RET sequence executed successfully by "emulating" it, in a manner of speaking, and avoid executing a RET instruction after returning from the interrupt.

Уязвимость ядра операционной системы Linux, связанная с раскрытием информации при передаче данных, позволяющая нарушителю вызвать отказ в обслуживании