CVE-2022-49961

In the Linux kernel, the following vulnerability has been resolved: bpf: Do markchainprecision for ARGCONSTALLOCSIZEORZERO Precision markers need to be propagated whenever we have an ARGCONST style argument, as the verifier cannot consider imprecise scalars to be equivalent for the purposes of...

AZL-70214 CVE-2022-49961 affecting package kernel 5.15.200.1-1

In the Linux kernel, the following vulnerability has been resolved: bpf: Do markchainprecision for ARGCONSTALLOCSIZEORZERO Precision markers need to be propagated whenever we have an ARGCONST style argument, as the verifier cannot consider imprecise scalars to be equivalent for the purposes of...

UBUNTU-CVE-2022-50219

In the Linux kernel, the following vulnerability has been resolved: bpf: Fix KASAN use-after-free Read in computeeffectiveprogs Syzbot found a Use After Free bug in computeeffectiveprogs. The reproducer creates a number of BPF links, and causes a fault injected alloc to fail, while calling...

UBUNTU-CVE-2022-49961

In the Linux kernel, the following vulnerability has been resolved: bpf: Do markchainprecision for ARGCONSTALLOCSIZEORZERO Precision markers need to be propagated whenever we have an ARGCONST style argument, as the verifier cannot consider imprecise scalars to be equivalent for the purposes of...

UBUNTU-CVE-2022-49975

In the Linux kernel, the following vulnerability has been resolved: bpf: Don't redirect packets with invalid pktlen Syzbot found an issue 1: fqcodeldrop try to drop a flow whitout any skbs, that is, the flow-head is null. The root cause, as the 2 says, is because that bpfprogtestrunskb run a bpf...

UBUNTU-CVE-2022-49985

In the Linux kernel, the following vulnerability has been resolved: bpf: Don't use tnumrange on array range checking for poke descriptors Hsin-Wei reported a KASAN splat triggered by their BPF runtime fuzzer which is based on a customized syzkaller: BUG: KASAN: slab-out-of-bounds in...

UBUNTU-CVE-2022-50069

In the Linux kernel, the following vulnerability has been resolved: BPF: Fix potential bad pointer dereference in bpfsysbpf The bpfsysbpf helper function allows an eBPF program to load another eBPF program from within the kernel. In this case the argument union bpfattr pointer as well as the insn...

UBUNTU-CVE-2022-49973

In the Linux kernel, the following vulnerability has been resolved: skmsg: Fix wrong last sg check in skmsgrecvmsg Fix one kernel NULL pointer dereference as below: 224.462334 Call Trace: 224.462394 tcpbpfrecvmsg+0xd3/0x380 224.462441 ? sockhasperm+0x78/0xa0 224.462463 tcpbpfrecvmsg+0x12e/0x220...

CVE-2022-50219 bpf: Fix KASAN use-after-free Read in compute_effective_progs

In the Linux kernel, the following vulnerability has been resolved: bpf: Fix KASAN use-after-free Read in computeeffectiveprogs Syzbot found a Use After Free bug in computeeffectiveprogs. The reproducer creates a number of BPF links, and causes a fault injected alloc to fail, while calling...

CVE-2022-50219 bpf: Fix KASAN use-after-free Read in compute_effective_progs

In the Linux kernel, the following vulnerability has been resolved: bpf: Fix KASAN use-after-free Read in computeeffectiveprogs Syzbot found a Use After Free bug in computeeffectiveprogs. The reproducer creates a number of BPF links, and causes a fault injected alloc to fail, while calling...

CVE-2022-50219

In CVE-2022-50219, the issue is in the Linux kernel’s BPF subsystem. Syzbot reported a use-after-free in compute_effective_progs when detaching BPF links, where a freed memory path could be dereferenced by update_effective_progs() leading to a KASAN UAF. The fix removes the pointer from the cgrou...

CVE-2022-50168

In the Linux kernel, the following vulnerability has been resolved: bpf, x86: fix freeing of not-finalized bpfprogpack syzbot reported a few issues with bpfprogpack 1, 2. This only happens with multiple subprogs. In jitsubprogs, we first call bpfintjitcompile on each sub program. And then, we cal...

CVE-2022-50168 bpf, x86: fix freeing of not-finalized bpf_prog_pack

In the Linux kernel, the following vulnerability has been resolved: bpf, x86: fix freeing of not-finalized bpfprogpack syzbot reported a few issues with bpfprogpack 1, 2. This only happens with multiple subprogs. In jitsubprogs, we first call bpfintjitcompile on each sub program. And then, we cal...

CVE-2022-50167

In the Linux kernel, the following vulnerability has been resolved: bpf: fix potential 32-bit overflow when accessing ARRAY map element If BPF array map is bigger than 4GB, element pointer calculation can overflow because both index and elemsize are u32. Fix this everywhere by forcing 64-bit...

CVE-2022-50167 bpf: fix potential 32-bit overflow when accessing ARRAY map element

In the Linux kernel, the following vulnerability has been resolved: bpf: fix potential 32-bit overflow when accessing ARRAY map element If BPF array map is bigger than 4GB, element pointer calculation can overflow because both index and elemsize are u32. Fix this everywhere by forcing 64-bit...

CVE-2022-50167 bpf: fix potential 32-bit overflow when accessing ARRAY map element

In the Linux kernel, the following vulnerability has been resolved: bpf: fix potential 32-bit overflow when accessing ARRAY map element If BPF array map is bigger than 4GB, element pointer calculation can overflow because both index and elemsize are u32. Fix this everywhere by forcing 64-bit...

CVE-2022-50167

Technical details for CVE-2022-50167 are not publicly available in the provided documents. The advisories list the CVE but do not specify affected products, root cause, or fixes. Monitor for official disclosures and updates.

CVE-2022-50069

In the Linux kernel, the following vulnerability has been resolved: BPF: Fix potential bad pointer dereference in bpfsysbpf The bpfsysbpf helper function allows an eBPF program to load another eBPF program from within the kernel. In this case the argument union bpfattr pointer as well as the insn...

CVE-2022-49985

In the Linux kernel, the following vulnerability has been resolved: bpf: Don't use tnumrange on array range checking for poke descriptors Hsin-Wei reported a KASAN splat triggered by their BPF runtime fuzzer which is based on a customized syzkaller: BUG: KASAN: slab-out-of-bounds in...

CVE-2022-49985

The CVE-2022-49985 entry concerns the Linux kernel, where the BPF component allowed a range check descriptor to misrepresent a tight range because tnum_range(0, map->max_entries-1) may yield a superset of the intended values. The root cause is that the tnum-based range representation can erron...