CVE-2022-48770 bpf: Guard against accessing NULL pt_regs in bpf_get_task_stack()

In the Linux kernel, the following vulnerability has been resolved: bpf: Guard against accessing NULL ptregs in bpfgettaskstack taskptregs can return NULL on powerpc for kernel threads. This is then used in bpfgetstack to check for user mode, resulting in a kernel oops. Guard against this by...

CVE-2022-48755 powerpc64/bpf: Limit 'ldbrx' to processors compliant with ISA v2.06

In the Linux kernel, the following vulnerability has been resolved: powerpc64/bpf: Limit 'ldbrx' to processors compliant with ISA v2.06 Johan reported the below crash with testbpf on ppc64 e5500: testbpf: 296 ALUENDFROMLE 64: 0x0123456789abcdef - 0x67452301 jited:1 Oops: Exception in kernel mode,...

CVE-2022-48755 powerpc64/bpf: Limit 'ldbrx' to processors compliant with ISA v2.06

In the Linux kernel, the following vulnerability has been resolved: powerpc64/bpf: Limit 'ldbrx' to processors compliant with ISA v2.06 Johan reported the below crash with testbpf on ppc64 e5500: testbpf: 296 ALUENDFROMLE 64: 0x0123456789abcdef - 0x67452301 jited:1 Oops: Exception in kernel mode,...

CVE-2022-48755

In the Linux kernel, the following vulnerability has been resolved: powerpc64/bpf: Limit 'ldbrx' to processors compliant with ISA v2.06 Johan reported the below crash with testbpf on ppc64 e5500: testbpf: 296 ALUENDFROMLE 64: 0x0123456789abcdef - 0x67452301 jited:1 Oops: Exception in kernel mode,...

CVE-2022-48714 bpf: Use VM_MAP instead of VM_ALLOC for ringbuf

In the Linux kernel, the following vulnerability has been resolved: bpf: Use VMMAP instead of VMALLOC for ringbuf After commit 2fd3fb0be1d1 "kasan, vmalloc: unpoison VMALLOC pages after mapping", non-VMALLOC mappings will be marked as accessible in getvmareanode when KASAN is enabled. But now the...

CVE-2022-48714 bpf: Use VM_MAP instead of VM_ALLOC for ringbuf

In the Linux kernel, the following vulnerability has been resolved: bpf: Use VMMAP instead of VMALLOC for ringbuf After commit 2fd3fb0be1d1 "kasan, vmalloc: unpoison VMALLOC pages after mapping", non-VMALLOC mappings will be marked as accessible in getvmareanode when KASAN is enabled. But now the...

CVE-2022-48714

In the Linux kernel, the following vulnerability has been resolved: bpf: Use VMMAP instead of VMALLOC for ringbuf After commit 2fd3fb0be1d1 "kasan, vmalloc: unpoison VMALLOC pages after mapping", non-VMALLOC mappings will be marked as accessible in getvmareanode when KASAN is enabled. But now the...

CVE-2021-47607

In the Linux kernel, the following vulnerability has been resolved: bpf: Fix kernel address leakage in atomic cmpxchg's r0 aux reg The implementation of BPFCMPXCHG on a high level has the following parameters: .-old-val .-new-val BPFR0 = cmpxchg32,64DSTREG + insn-off, BPFR0, SRCREG -mem-loc...

CVE-2022-48714

In the Linux kernel, the following vulnerability has been resolved: bpf: Use VMMAP instead of VMALLOC for ringbuf After commit 2fd3fb0be1d1 "kasan, vmalloc: unpoison VMALLOC pages after mapping", non-VMALLOC mappings will be marked as accessible in getvmareanode when KASAN is enabled. But now the...

Linux kernel security vulnerabilities

Linux kernel is the kernel used by the Linux Foundation's open source operating system Linux. A security vulnerability exists in the Linux kernel that stems from a null pointer dereference in the bpf module's bpfgettaskstack method...

CVE-2022-48755

In the Linux kernel, the following vulnerability has been resolved: powerpc64/bpf: Limit 'ldbrx' to processors compliant with ISA v2.06 Johan reported the below crash with testbpf on ppc64 e5500: testbpf: 296 ALUENDFROMLE 64: 0x0123456789abcdef - 0x67452301 jited:1 Oops: Exception in kernel mode,...

CVE-2021-47608

In the Linux kernel, the following vulnerability has been resolved: bpf: Fix kernel address leakage in atomic fetch The change in commit 37086bfdc737 "bpf: Propagate stack bounds to registers in atomics w/ BPFFETCH" around checkmemaccess handling is buggy since this would allow for unprivileged...

DEBIAN-CVE-2021-47608

In the Linux kernel, the following vulnerability has been resolved: bpf: Fix kernel address leakage in atomic fetch The change in commit 37086bfdc737 "bpf: Propagate stack bounds to registers in atomics w/ BPFFETCH" around checkmemaccess handling is buggy since this would allow for unprivileged...

DEBIAN-CVE-2021-47607

In the Linux kernel, the following vulnerability has been resolved: bpf: Fix kernel address leakage in atomic cmpxchg's r0 aux reg The implementation of BPFCMPXCHG on a high level has the following parameters: .-old-val .-new-val BPFR0 = cmpxchg32,64DSTREG + insn-off, BPFR0, SRCREG -mem-loc...

CVE-2021-47607

In the Linux kernel, the following vulnerability has been resolved: bpf: Fix kernel address leakage in atomic cmpxchg's r0 aux reg The implementation of BPFCMPXCHG on a high level has the following parameters: .-old-val .-new-val BPFR0 = cmpxchg32,64DSTREG + insn-off, BPFR0, SRCREG -mem-loc...

CVE-2021-47608

In the Linux kernel, the following vulnerability has been resolved: bpf: Fix kernel address leakage in atomic fetch The change in commit 37086bfdc737 "bpf: Propagate stack bounds to registers in atomics w/ BPFFETCH" around checkmemaccess handling is buggy since this would allow for unprivileged...

CVE-2021-47608

In the Linux kernel, the following vulnerability has been resolved: bpf: Fix kernel address leakage in atomic fetch The change in commit 37086bfdc737 "bpf: Propagate stack bounds to registers in atomics w/ BPFFETCH" around checkmemaccess handling is buggy since this would allow for unprivileged...

UBUNTU-CVE-2021-47608

In the Linux kernel, the following vulnerability has been resolved: bpf: Fix kernel address leakage in atomic fetch The change in commit 37086bfdc737 "bpf: Propagate stack bounds to registers in atomics w/ BPFFETCH" around checkmemaccess handling is buggy since this would allow for unprivileged...

CVE-2021-47608 bpf: Fix kernel address leakage in atomic fetch

In the Linux kernel, the following vulnerability has been resolved: bpf: Fix kernel address leakage in atomic fetch The change in commit 37086bfdc737 "bpf: Propagate stack bounds to registers in atomics w/ BPFFETCH" around checkmemaccess handling is buggy since this would allow for unprivileged...

CVE-2021-47608 bpf: Fix kernel address leakage in atomic fetch

In the Linux kernel, the following vulnerability has been resolved: bpf: Fix kernel address leakage in atomic fetch The change in commit 37086bfdc737 "bpf: Propagate stack bounds to registers in atomics w/ BPFFETCH" around checkmemaccess handling is buggy since this would allow for unprivileged...