CVE-2021-47588 sit: do not call ipip6_dev_free() from sit_init_net()

In the Linux kernel, the following vulnerability has been resolved: sit: do not call ipip6devfree from sitinitnet ipip6devfree is sit dev-privdestructor, already called by registernetdevice if something goes wrong. Alternative would be to make ipip6devfree robust against multiple invocations, but...

CVE-2024-36979 net: bridge: mst: fix vlan use-after-free

In the Linux kernel, the following vulnerability has been resolved: net: bridge: mst: fix vlan use-after-free syzbot reported a suspicious rcu usage1 in bridge's mst code. While fixing it I noticed that nothing prevents a vlan to be freed while walking the list from the same path br forward delay...

CVE-2024-36915

In the Linux kernel, the following vulnerability has been resolved: nfc: llcp: fix nfcllcpsetsockopt unsafe copies syzbot reported unsafe calls to copyfromsockptr 1 Use copysafefromsockptr instead. 1 BUG: KASAN: slab-out-of-bounds in copyfromsockptroffset include/linux/sockptr.h:49 inline BUG:...

CVE-2024-36902

In the Linux kernel, the following vulnerability has been resolved: ipv6: fib6rules: avoid possible NULL dereference in fib6ruleaction syzbot is able to trigger the following crash 1, caused by unsafe ip6dstidev use. Indeed ip6dstidev can return NULL, and must always be checked. 1 Oops: general...

CVE-2024-36938 bpf, skmsg: Fix NULL pointer dereference in sk_psock_skb_ingress_enqueue

In the Linux kernel, the following vulnerability has been resolved: bpf, skmsg: Fix NULL pointer dereference in skpsockskbingressenqueue Fix NULL pointer data-races in skpsockskbingressenqueue which syzbot reported 1. 1 BUG: KCSAN: data-race in skpsockdrop / skpsockskbingressenqueue write to...

CVE-2024-36938 bpf, skmsg: Fix NULL pointer dereference in sk_psock_skb_ingress_enqueue

In the Linux kernel, the following vulnerability has been resolved: bpf, skmsg: Fix NULL pointer dereference in skpsockskbingressenqueue Fix NULL pointer data-races in skpsockskbingressenqueue which syzbot reported 1. 1 BUG: KCSAN: data-race in skpsockdrop / skpsockskbingressenqueue write to...

CVE-2024-36915

CVE-2024-36915 concerns the Linux kernel’s NFC LLCP path where nfc_llcp_setsockopt() could unsafe-copy from user-supplied sockptr data, triggering a slab-out-of-bounds read. Symptom traces show reads of 4 bytes at a user task, linked to copy_from_sockptr() and inline copy_from_sockptr_offset; the...

CVE-2024-36902 ipv6: fib6_rules: avoid possible NULL dereference in fib6_rule_action()

In the Linux kernel, the following vulnerability has been resolved: ipv6: fib6rules: avoid possible NULL dereference in fib6ruleaction syzbot is able to trigger the following crash 1, caused by unsafe ip6dstidev use. Indeed ip6dstidev can return NULL, and must always be checked. 1 Oops: general...

CVE-2024-36902 ipv6: fib6_rules: avoid possible NULL dereference in fib6_rule_action()

In the Linux kernel, the following vulnerability has been resolved: ipv6: fib6rules: avoid possible NULL dereference in fib6ruleaction syzbot is able to trigger the following crash 1, caused by unsafe ip6dstidev use. Indeed ip6dstidev can return NULL, and must always be checked. 1 Oops: general...

CVE-2024-36901 ipv6: prevent NULL dereference in ip6_output()

In the Linux kernel, the following vulnerability has been resolved: ipv6: prevent NULL dereference in ip6output According to syzbot, there is a chance that ip6dstidev returns NULL in ip6output. Most places in IPv6 stack deal with a NULL idev just fine, but not here. syzbot reported: general...

CVE-2021-47512 net/sched: fq_pie: prevent dismantle issue

In the Linux kernel, the following vulnerability has been resolved: net/sched: fqpie: prevent dismantle issue For some reason, fqpiedestroy did not copy working code from piedestroy and other qdiscs, thus causing elusive bug. Before calling deltimersync&q-adapttimer, we need to ensure timer will...

CVE-2021-47512 net/sched: fq_pie: prevent dismantle issue

In the Linux kernel, the following vulnerability has been resolved: net/sched: fqpie: prevent dismantle issue For some reason, fqpiedestroy did not copy working code from piedestroy and other qdiscs, thus causing elusive bug. Before calling deltimersync&q-adapttimer, we need to ensure timer will...

CVE-2021-47370

In the Linux kernel, the following vulnerability has been resolved: mptcp: ensure tx skbs always have the MPTCP ext Due to signed/unsigned comparison, the expression: info-sizegoal - skb-len 0 evaluates to true when the size goal is smaller than the skb size. That results in lack of tx cache...

CVE-2021-47462

In the Linux kernel, the following vulnerability has been resolved: mm/mempolicy: do not allow illegal MPOLFNUMABALANCING | MPOLLOCAL in mbind syzbot reported access to unitialized memory in mbind 1 Issue came with commit bda420b98505 "numa balancing: migrate on fault among multiple bound nodes"...

CVE-2021-47462 mm/mempolicy: do not allow illegal MPOL_F_NUMA_BALANCING | MPOL_LOCAL in mbind()

In the Linux kernel, the following vulnerability has been resolved: mm/mempolicy: do not allow illegal MPOLFNUMABALANCING | MPOLLOCAL in mbind syzbot reported access to unitialized memory in mbind 1 Issue came with commit bda420b98505 "numa balancing: migrate on fault among multiple bound nodes"...

CVE-2021-47462

CVE-2021-47462 affects the Linux kernel mempolicy/memory policy handling. The root cause was an invalid combination check for MPOL_MODE_FLAGS: MPOL_F_NUMA_BALANCING may only pair with MPOL_BIND, but the check existed only in do_set_mempolicy(). The patch moves this validation into sanitize_mpol_f...

CVE-2023-52796

In the Linux kernel, the following vulnerability has been resolved: ipvlan: add ipvlanroutev6outbound helper Inspired by syzbot reports using a stack of multiple ipvlan devices. Reduce stack size needed in ipvlanprocessv6outbound by moving the flowi6 struct used for the route lookup in an non...

CVE-2023-52701

In the Linux kernel, the following vulnerability has been resolved: net: use a bounce buffer for copying skb-mark syzbot found arm64 builds would crash in sockrecvmark when CONFIGHARDENEDUSERCOPY=y x86 and powerpc are not detecting the issue because they define useraccessbegin. This will be handl...

CVE-2023-52796

In the Linux kernel, the following vulnerability has been resolved: ipvlan: add ipvlanroutev6outbound helper Inspired by syzbot reports using a stack of multiple ipvlan devices. Reduce stack size needed in ipvlanprocessv6outbound by moving the flowi6 struct used for the route lookup in an non...

CVE-2023-52796 ipvlan: add ipvlan_route_v6_outbound() helper

In the Linux kernel, the following vulnerability has been resolved: ipvlan: add ipvlanroutev6outbound helper Inspired by syzbot reports using a stack of multiple ipvlan devices. Reduce stack size needed in ipvlanprocessv6outbound by moving the flowi6 struct used for the route lookup in an non...