CVE-2022-48998 powerpc/bpf/32: Fix Oops on tail call tests

In the Linux kernel, the following vulnerability has been resolved: powerpc/bpf/32: Fix Oops on tail call tests testbpf tail call tests end up as: testbpf: 0 Tail call leaf jited:1 85 PASS testbpf: 1 Tail call 2 jited:1 111 PASS testbpf: 2 Tail call 3 jited:1 145 PASS testbpf: 3 Tail call 4 jited...

CVE-2022-48998 powerpc/bpf/32: Fix Oops on tail call tests

In the Linux kernel, the following vulnerability has been resolved: powerpc/bpf/32: Fix Oops on tail call tests testbpf tail call tests end up as: testbpf: 0 Tail call leaf jited:1 85 PASS testbpf: 1 Tail call 2 jited:1 111 PASS testbpf: 2 Tail call 3 jited:1 145 PASS testbpf: 3 Tail call 4 jited...

CVE-2022-48998

CVE-2022-48998 concerns a PowerPC-specific issue in the Linux kernel’s BPF tail-call handling (powerpc/bpf/32). The available connected documents describe a bug where tail calls to BPF programs with differing stack depths could corrupt stack state, leading to an Oops and kernel data access on wri...

CVE-2022-48998 powerpc/bpf/32: Fix Oops on tail call tests

In the Linux kernel, the following vulnerability has been resolved: powerpc/bpf/32: Fix Oops on tail call tests testbpf tail call tests end up as: testbpf: 0 Tail call leaf jited:1 85 PASS testbpf: 1 Tail call 2 jited:1 111 PASS testbpf: 2 Tail call 3 jited:1 145 PASS testbpf: 3 Tail call 4 jited...

CVE-2022-48976 netfilter: flowtable_offload: fix using __this_cpu_add in preemptible

In the Linux kernel, the following vulnerability has been resolved: netfilter: flowtableoffload: fix using thiscpuadd in preemptible flowoffloadqueuework can be called in workqueue without bh disabled, like the call trace showed in my actct testing, calling NFFLOWTABLESTATINC there would cause a...

CVE-2022-48976

The CVE-2022-48976 case concerns Linux kernel netfilter flowtable_offload. A preemptible path used __this_cpu_add in flow_offload_queue_work(), which could trigger a BUG when called from a workqueue without bh disabled. The fix replaces __this_cpu_add with NF_FLOW_TABLE_STAT_INC_ATOMIC() in flow_...

CVE-2022-48956 ipv6: avoid use-after-free in ip6_fragment()

In the Linux kernel, the following vulnerability has been resolved: ipv6: avoid use-after-free in ip6fragment Blamed commit claimed rcureadlock was held by ip6fragment callers. It seems to not be always true, at least for UDP stack. syzbot reported: BUG: KASAN: use-after-free in ip6dstidev...

CVE-2024-50063

CVE-2024-50063 concerns the Linux kernel BPF tail calls where a program attached to one kernel hook tail-calling another with a different prototype could bypass ctx-parameter verification and return-value constraints. The issue arises when progs attached to func1 and func2 have different paramete...

CVE-2024-50063 bpf: Prevent tail call between progs attached to different hooks

In the Linux kernel, the following vulnerability has been resolved: bpf: Prevent tail call between progs attached to different hooks bpf progs can be attached to kernel functions, and the attached functions can take different parameters or return different return values. If prog attached to one...

CVE-2024-50063 bpf: Prevent tail call between progs attached to different hooks

In the Linux kernel, the following vulnerability has been resolved: bpf: Prevent tail call between progs attached to different hooks bpf progs can be attached to kernel functions, and the attached functions can take different parameters or return different return values. If prog attached to one...

CVE-2024-50063 bpf: Prevent tail call between progs attached to different hooks

In the Linux kernel, the following vulnerability has been resolved: bpf: Prevent tail call between progs attached to different hooks bpf progs can be attached to kernel functions, and the attached functions can take different parameters or return different return values. If prog attached to one...

CVE-2024-50058

In the Linux kernel, the following vulnerability has been resolved: serial: protect uartportdtrrts in uartshutdown too Commit af224ca2df29 serial: core: Prevent unsafe uart port access, part 3 added few uport == NULL checks. It added one to uartshutdown, so the commit assumes, uport can be NULL i...

CVE-2024-50039 net/sched: accept TCA_STAB only for root qdisc

In the Linux kernel, the following vulnerability has been resolved: net/sched: accept TCASTAB only for root qdisc Most qdiscs maintain their backlog using qdiscpktlenskb on the assumption it is invariant between the enqueue and dequeue handlers. Unfortunately syzbot can crash a host rather easily...

DEBIAN-CVE-2024-50002

In the Linux kernel, the following vulnerability has been resolved: staticcall: Handle module init failure correctly in staticcalldelmodule Module insertion invokes staticcalladdmodule to initialize the static calls in a module. staticcalladdmodule invokes staticcallinit, which allocates a struct...

AZL-51974 CVE-2024-50002 affecting package kernel for versions less than 5.15.173.1-1

In the Linux kernel, the following vulnerability has been resolved: staticcall: Handle module init failure correctly in staticcalldelmodule Module insertion invokes staticcalladdmodule to initialize the static calls in a module. staticcalladdmodule invokes staticcallinit, which allocates a struct...

DEBIAN-CVE-2024-49953

In the Linux kernel, the following vulnerability has been resolved: net/mlx5e: Fix crash caused by calling xfrmstatedelete twice The km.state is not checked in driver's delayed work. When xfrmstatecheckexpire is called, the state can be reset to XFRMSTATEEXPIRED, even if it is XFRMSTATEDEAD...

DEBIAN-CVE-2024-49954

In the Linux kernel, the following vulnerability has been resolved: staticcall: Replace pointless WARNON in staticcallmodulenotify staticcallmodulenotify triggers a WARNON, when memory allocation fails in staticcalladdmodule. That's not really justified, because the failure case must be correctly...

UBUNTU-CVE-2024-49987

In the Linux kernel, the following vulnerability has been resolved: bpftool: Fix undefined behavior in qsortNULL, 0, ... When netfilter has no entry to display, qsort is called with qsortNULL, 0, .... This results in undefined behavior, as UBSan reports: net.c:827:2: runtime error: null pointer...

UBUNTU-CVE-2024-50002

In the Linux kernel, the following vulnerability has been resolved: staticcall: Handle module init failure correctly in staticcalldelmodule Module insertion invokes staticcalladdmodule to initialize the static calls in a module. staticcalladdmodule invokes staticcallinit, which allocates a struct...

UBUNTU-CVE-2024-49954

In the Linux kernel, the following vulnerability has been resolved: staticcall: Replace pointless WARNON in staticcallmodulenotify staticcallmodulenotify triggers a WARNON, when memory allocation fails in staticcalladdmodule. That's not really justified, because the failure case must be correctly...