{
  "cveId": "CVE-2024-50072",
  "url": "https://patchblox.com/security/cve/CVE-2024-50072",
  "summary": "CVE-2024-50072 is fixed in 35 products on 1 platform, first by DEBIAN-CVE-2024-50072, released October 29, 2024. It is not reported as exploited. Patch Radar priority: Routine.",
  "title": "linux: In the Linux kernel, the following vulnerability has been resolved:  x86/bugs: Use code segment selector for VERW ope...",
  "description": "In the Linux kernel, the following vulnerability has been resolved:  x86/bugs: Use code segment selector for VERW operand  Robert Gill reported below #GP in 32-bit mode when dosemu software was executing vm86() system call:    general protection fault: 0000 [#1] PREEMPT SMP   CPU: 4 PID: 4610 Comm: dosemu.bin Not tainted 6.6.21-gentoo-x86 #1   Hardware name: Dell Inc. PowerEdge 1950/0H723K, BIOS 2.7.0 10/30/2010   EIP: restore_all_switch_stack\u002B0xbe/0xcf   EAX: 00000000 EBX: 00000000 ECX: 00000000 EDX: 00000000   ESI: 00000000 EDI: 00000000 EBP: 00000000 ESP: ff8affdc   DS: 0000 ES: 0000 FS: 0000 GS: 0033 SS: 0068 EFLAGS: 00010046   CR0: 80050033 CR2: 00c2101c CR3: 04b6d000 CR4: 000406d0   Call Trace:    show_regs\u002B0x70/0x78    die_addr\u002B0x29/0x70    exc_general_protection\u002B0x13c/0x348    exc_bounds\u002B0x98/0x98    handle_exception\u002B0x14d/0x14d    exc_bounds\u002B0x98/0x98    restore_all_switch_stack\u002B0xbe/0xcf    exc_bounds\u002B0x98/0x98    restore_all_switch_stack\u002B0xbe/0xcf  This only happens in 32-bit mode when VERW based mitigations like MDS/RFDS are enabled. This is because segment registers with an arbitrary user value can result in #GP when executing VERW. Intel SDM vol. 2C documents the following behavior for VERW instruction:    #GP(0) - If a memory operand effective address is outside the CS, DS, ES, \t   FS, or GS segment limit.  CLEAR_CPU_BUFFERS macro executes VERW instruction before returning to user space. Use %cs selector to reference VERW operand. This ensures VERW will not #GP for an arbitrary user %ds.  [ mingo: Fixed the SOB chain. ]",
  "published": "2024-10-29T01:15:04Z",
  "severity": "medium",
  "cvss": 5.5,
  "cvssVector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
  "epss": 0.00232,
  "epssPercentile": 0.14101,
  "priority": "Routine",
  "priorityTier": 4,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
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