Affected: Alpaquita:23: linux-lts, Alpaquita:stream: linux-lts

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

ext4: correct grp validation in ext4_mb_good_group

Group corruption check will access memory of grp and will trigger kernel crash if grp is NULL. So do NULL check before corruption check.

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

ext4: correct grp validation in ext4_mb_good_group

Group corruption check will access memory of grp and will trigger kernel crash if grp is NULL. So do NULL check before corruption check.

Affected: openEuler:22.03-LTS-SP3: kernel

The Linux Kernel, the operating system core itself. Security Fix(es):

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

powerpc/kprobes: Fix null pointer reference in arch_prepare_kprobe()

I found a null pointer reference in arch_prepare_kprobe():

# echo 'p cmdline_proc_show' > kprobe_events # echo 'p cmdline_proc_show+16' >> kprobe_events Kernel attempted to read user page (0) - exploit attempt? (uid: 0) BUG: Kernel NULL pointer dereference on read at 0x00000000 Faulting instruction address: 0xc000000000050bfc Oops: Kernel access of bad area, sig: 11 [#1] LE PAGE_SIZE=64K MMU=Radix SMP NR_CPUS=2048 NUMA PowerNV Modules linked in: CPU: 0 PID: 122 Comm: sh Not tainted 6.0.0-rc3-00007-gdcf8e5633e2e #10 NIP: c000000000050bfc LR: c000000000050bec CTR: 0000000000005bdc REGS: c0000000348475b0 TRAP: 0300 Not tainted (6.0.0-rc3-00007-gdcf8e5633e2e) MSR: 9000000000009033 <SF,HV,EE,ME,IR,DR,RI,LE> CR: 88002444 XER: 20040006 CFAR: c00000000022d100 DAR: 0000000000000000 DSISR: 40000000 IRQMASK: 0 ... NIP arch_prepare_kprobe+0x10c/0x2d0 LR arch_prepare_kprobe+0xfc/0x2d0 Call Trace: 0xc0000000012f77a0 (unreliable) register_kprobe+0x3c0/0x7a0 __register_trace_kprobe+0x140/0x1a0 __trace_kprobe_create+0x794/0x1040 trace_probe_create+0xc4/0xe0 create_or_delete_trace_kprobe+0x2c/0x80 trace_parse_run_command+0xf0/0x210 probes_write+0x20/0x40 vfs_write+0xfc/0x…

kernel: vt_ioctl: fix array_index_nospec in vt_setactivate kernel: pstore/ram: Fix crash when setting number of cpus to an odd number kernel: PM / devfreq: Synchronize devfreq_monitor_[start/stop] kernel: net/smc: avoid data corruption caused by decline kernel: scsi: ibmvfc: Remove BUG_ON in the case of an empty event pool kernel: ext4: allow ext4_get_group_info() to fail kernel: ext4: correct grp validation in ext4_mb_good_group kernel: ext4: regenerate buddy after block freeing failed if under fc replay kernel: net/smc: fix illegal rmb_desc access in SMC-D connection dump kernel: fs/proc: do_task_stat: use sig->stats_lock to gather the threads/children stats kernel: ext4: fix double-free of blocks due to wrong extents moved_len kernel: Bluetooth: l2cap: fix null-ptr-deref in l2cap_chan_timeout kernel: s390/qeth: Fix kernel panic after setting hsuid kernel: drm/vmwgfx: Fix invalid reads in fence signaled events kernel: blk-cgroup: fix list corruption from reorder of WRITE ->lqueued kernel: of: module: add buffer overflow check in of_modalias() kernel: net/mlx5: Discard command completions in internal error kernel: net: hns3: fix kernel crash problem in concurrent scenario kernel: cpufreq: amd-pstate: fix memory leak on CPU EPP exit kernel: tcp: avoid too many retransmit packets kernel: drm/amdgpu: change vm->task_info handling kernel: bpf: Fix overrunning reservations in ringbuf kernel: mm/filemap: skip to create PMD-sized page cache if needed kernel: firmware: cs_dsp…

Security update for the Linux Kernel

Affected: Ubuntu:16.04:LTS: linux-hwe-edge, Ubuntu:18.04:LTS: linux-aws-5.0, Ubuntu:18.04:LTS: linux-aws-5.3, Ubuntu:18.04:LTS: linux-azure, Ubuntu:18.04:LTS: linux-azure-5.3, Ubuntu:18.04:LTS: linux-azure-edge, Ubuntu:18.04:LTS: linux-gcp, Ubuntu:18.04:LTS: linux-gcp-5.3, Ubuntu:18.04:LTS: linux-gke-4.15, Ubuntu:18.04:LTS: linux-gke-5.4 and 115 more

In the Linux kernel, the following vulnerability has been resolved: ext4: correct grp validation in ext4_mb_good_group Group corruption check will access memory of grp and will trigger kernel crash if grp is NULL. So do NULL check before corruption check.

Ein lokaler Angreifer kann mehrere Schwachstellen in Linux Kernel ausnutzen, um einen Denial of Service Angriff durchzuführen.