VULNERABILITY

Ubuntu: (CVE-2022-49395): linux vulnerability

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Ubuntu: (CVE-2022-49395): linux vulnerability

Severity
6
CVSS
(AV:L/AC:L/Au:S/C:C/I:N/A:C)
Published
02/26/2025
Created
03/10/2025
Added
03/03/2025
Modified
04/21/2025

Description

In the Linux kernel, the following vulnerability has been resolved: um: Fix out-of-bounds read in LDT setup syscall_stub_data() expects the data_count parameter to be the number of longs, not bytes. ================================================================== BUG: KASAN: stack-out-of-bounds in syscall_stub_data+0x70/0xe0 Read of size 128 at addr 000000006411f6f0 by task swapper/1 CPU: 0 PID: 1 Comm: swapper Not tainted 5.18.0+ #18 Call Trace: show_stack.cold+0x166/0x2a7 __dump_stack+0x3a/0x43 dump_stack_lvl+0x1f/0x27 print_report.cold+0xdb/0xf81 kasan_report+0x119/0x1f0 kasan_check_range+0x3a3/0x440 memcpy+0x52/0x140 syscall_stub_data+0x70/0xe0 write_ldt_entry+0xac/0x190 init_new_ldt+0x515/0x960 init_new_context+0x2c4/0x4d0 mm_init.constprop.0+0x5ed/0x760 mm_alloc+0x118/0x170 0x60033f48 do_one_initcall+0x1d7/0x860 0x60003e7b kernel_init+0x6e/0x3d4 new_thread_handler+0x1e7/0x2c0 The buggy address belongs to stack of task swapper/1 and is located at offset 64 in frame: init_new_ldt+0x0/0x960 This frame has 2 objects: [32, 40) 'addr' [64, 80) 'desc' ==================================================================

Solution(s)

  • ubuntu-upgrade-linux
  • ubuntu-upgrade-linux-aws
  • ubuntu-upgrade-linux-aws-5-15
  • ubuntu-upgrade-linux-aws-5-4
  • ubuntu-upgrade-linux-aws-fips
  • ubuntu-upgrade-linux-aws-hwe
  • ubuntu-upgrade-linux-azure
  • ubuntu-upgrade-linux-azure-4-15
  • ubuntu-upgrade-linux-azure-5-15
  • ubuntu-upgrade-linux-azure-5-4
  • ubuntu-upgrade-linux-azure-fips
  • ubuntu-upgrade-linux-bluefield
  • ubuntu-upgrade-linux-fips
  • ubuntu-upgrade-linux-gcp
  • ubuntu-upgrade-linux-gcp-4-15
  • ubuntu-upgrade-linux-gcp-5-15
  • ubuntu-upgrade-linux-gcp-5-4
  • ubuntu-upgrade-linux-gcp-fips
  • ubuntu-upgrade-linux-gke
  • ubuntu-upgrade-linux-gkeop
  • ubuntu-upgrade-linux-hwe
  • ubuntu-upgrade-linux-hwe-5-15
  • ubuntu-upgrade-linux-hwe-5-4
  • ubuntu-upgrade-linux-ibm
  • ubuntu-upgrade-linux-ibm-5-4
  • ubuntu-upgrade-linux-intel-iotg
  • ubuntu-upgrade-linux-intel-iotg-5-15
  • ubuntu-upgrade-linux-iot
  • ubuntu-upgrade-linux-kvm
  • ubuntu-upgrade-linux-lowlatency
  • ubuntu-upgrade-linux-lowlatency-hwe-5-15
  • ubuntu-upgrade-linux-nvidia
  • ubuntu-upgrade-linux-oracle
  • ubuntu-upgrade-linux-oracle-5-15
  • ubuntu-upgrade-linux-oracle-5-4
  • ubuntu-upgrade-linux-raspi
  • ubuntu-upgrade-linux-raspi-5-4
  • ubuntu-upgrade-linux-realtime
  • ubuntu-upgrade-linux-riscv-5-15

References

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