GHSA-2MRH-G8F4-XVJV

Vulnerability from github – Published: 2024-04-03 15:30 – Updated: 2025-01-07 18:30
VLAI
Details

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

crypto: ccp - Fix null pointer dereference in __sev_platform_shutdown_locked

The SEV platform device can be shutdown with a null psp_master, e.g., using DEBUG_TEST_DRIVER_REMOVE. Found using KASAN:

[ 137.148210] ccp 0000:23:00.1: enabling device (0000 -> 0002) [ 137.162647] ccp 0000:23:00.1: no command queues available [ 137.170598] ccp 0000:23:00.1: sev enabled [ 137.174645] ccp 0000:23:00.1: psp enabled [ 137.178890] general protection fault, probably for non-canonical address 0xdffffc000000001e: 0000 [#1] PREEMPT SMP DEBUG_PAGEALLOC KASAN NOPTI [ 137.182693] KASAN: null-ptr-deref in range [0x00000000000000f0-0x00000000000000f7] [ 137.182693] CPU: 93 PID: 1 Comm: swapper/0 Not tainted 6.8.0-rc1+ #311 [ 137.182693] RIP: 0010:__sev_platform_shutdown_locked+0x51/0x180 [ 137.182693] Code: 08 80 3c 08 00 0f 85 0e 01 00 00 48 8b 1d 67 b6 01 08 48 b8 00 00 00 00 00 fc ff df 48 8d bb f0 00 00 00 48 89 f9 48 c1 e9 03 <80> 3c 01 00 0f 85 fe 00 00 00 48 8b 9b f0 00 00 00 48 85 db 74 2c [ 137.182693] RSP: 0018:ffffc900000cf9b0 EFLAGS: 00010216 [ 137.182693] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 000000000000001e [ 137.182693] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 00000000000000f0 [ 137.182693] RBP: ffffc900000cf9c8 R08: 0000000000000000 R09: fffffbfff58f5a66 [ 137.182693] R10: ffffc900000cf9c8 R11: ffffffffac7ad32f R12: ffff8881e5052c28 [ 137.182693] R13: ffff8881e5052c28 R14: ffff8881758e43e8 R15: ffffffffac64abf8 [ 137.182693] FS: 0000000000000000(0000) GS:ffff889de7000000(0000) knlGS:0000000000000000 [ 137.182693] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 137.182693] CR2: 0000000000000000 CR3: 0000001cf7c7e000 CR4: 0000000000350ef0 [ 137.182693] Call Trace: [ 137.182693] [ 137.182693] ? show_regs+0x6c/0x80 [ 137.182693] ? __die_body+0x24/0x70 [ 137.182693] ? die_addr+0x4b/0x80 [ 137.182693] ? exc_general_protection+0x126/0x230 [ 137.182693] ? asm_exc_general_protection+0x2b/0x30 [ 137.182693] ? __sev_platform_shutdown_locked+0x51/0x180 [ 137.182693] sev_firmware_shutdown.isra.0+0x1e/0x80 [ 137.182693] sev_dev_destroy+0x49/0x100 [ 137.182693] psp_dev_destroy+0x47/0xb0 [ 137.182693] sp_destroy+0xbb/0x240 [ 137.182693] sp_pci_remove+0x45/0x60 [ 137.182693] pci_device_remove+0xaa/0x1d0 [ 137.182693] device_remove+0xc7/0x170 [ 137.182693] really_probe+0x374/0xbe0 [ 137.182693] ? srso_return_thunk+0x5/0x5f [ 137.182693] __driver_probe_device+0x199/0x460 [ 137.182693] driver_probe_device+0x4e/0xd0 [ 137.182693] __driver_attach+0x191/0x3d0 [ 137.182693] ? __pfxdriverattach+0x10/0x10 [ 137.182693] bus_for_each_dev+0x100/0x190 [ 137.182693] ? pfx_bus_for_each_dev+0x10/0x10 [ 137.182693] ? __kasan_check_read+0x15/0x20 [ 137.182693] ? srso_return_thunk+0x5/0x5f [ 137.182693] ? _raw_spin_unlock+0x27/0x50 [ 137.182693] driver_attach+0x41/0x60 [ 137.182693] bus_add_driver+0x2a8/0x580 [ 137.182693] driver_register+0x141/0x480 [ 137.182693] __pci_register_driver+0x1d6/0x2a0 [ 137.182693] ? srso_return_thunk+0x5/0x5f [ 137.182693] ? esrt_sysfs_init+0x1cd/0x5d0 [ 137.182693] ? __pfx_sp_mod_init+0x10/0x10 [ 137.182693] sp_pci_init+0x22/0x30 [ 137.182693] sp_mod_init+0x14/0x30 [ 137.182693] ? __pfx_sp_mod_init+0x10/0x10 [ 137.182693] do_one_initcall+0xd1/0x470 [ 137.182693] ? __pfx_do_one_initcall+0x10/0x10 [ 137.182693] ? parameq+0x80/0xf0 [ 137.182693] ? srso_return_thunk+0x5/0x5f [ 137.182693] ? __kmalloc+0x3b0/0x4e0 [ 137.182693] ? kernel_init_freeable+0x92d/0x1050 [ 137.182693] ? kasan_populate_vmalloc_pte+0x171/0x190 [ 137.182693] ? srso_return_thunk+0x5/0x5f [ 137.182693] kernel_init_freeable+0xa64/0x1050 [ 137.182693] ? __pfx_kernel_init+0x10/0x10 [ 137.182693] kernel_init+0x24/0x160 [ 137.182693] ? __switch_to_asm+0x3e/0x70 [ 137.182693] ret_from_fork+0x40/0x80 [ 137.182693] ? __pfx_kernel_init+0x1 ---truncated---

Severity
5.5 (Medium)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
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{
  "affected": [],
  "aliases": [
    "CVE-2024-26695"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-476"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2024-04-03T15:15:52Z",
    "severity": "MODERATE"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\ncrypto: ccp - Fix null pointer dereference in __sev_platform_shutdown_locked\n\nThe SEV platform device can be shutdown with a null psp_master,\ne.g., using DEBUG_TEST_DRIVER_REMOVE.  Found using KASAN:\n\n[  137.148210] ccp 0000:23:00.1: enabling device (0000 -\u003e 0002)\n[  137.162647] ccp 0000:23:00.1: no command queues available\n[  137.170598] ccp 0000:23:00.1: sev enabled\n[  137.174645] ccp 0000:23:00.1: psp enabled\n[  137.178890] general protection fault, probably for non-canonical address 0xdffffc000000001e: 0000 [#1] PREEMPT SMP DEBUG_PAGEALLOC KASAN NOPTI\n[  137.182693] KASAN: null-ptr-deref in range [0x00000000000000f0-0x00000000000000f7]\n[  137.182693] CPU: 93 PID: 1 Comm: swapper/0 Not tainted 6.8.0-rc1+ #311\n[  137.182693] RIP: 0010:__sev_platform_shutdown_locked+0x51/0x180\n[  137.182693] Code: 08 80 3c 08 00 0f 85 0e 01 00 00 48 8b 1d 67 b6 01 08 48 b8 00 00 00 00 00 fc ff df 48 8d bb f0 00 00 00 48 89 f9 48 c1 e9 03 \u003c80\u003e 3c 01 00 0f 85 fe 00 00 00 48 8b 9b f0 00 00 00 48 85 db 74 2c\n[  137.182693] RSP: 0018:ffffc900000cf9b0 EFLAGS: 00010216\n[  137.182693] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 000000000000001e\n[  137.182693] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 00000000000000f0\n[  137.182693] RBP: ffffc900000cf9c8 R08: 0000000000000000 R09: fffffbfff58f5a66\n[  137.182693] R10: ffffc900000cf9c8 R11: ffffffffac7ad32f R12: ffff8881e5052c28\n[  137.182693] R13: ffff8881e5052c28 R14: ffff8881758e43e8 R15: ffffffffac64abf8\n[  137.182693] FS:  0000000000000000(0000) GS:ffff889de7000000(0000) knlGS:0000000000000000\n[  137.182693] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033\n[  137.182693] CR2: 0000000000000000 CR3: 0000001cf7c7e000 CR4: 0000000000350ef0\n[  137.182693] Call Trace:\n[  137.182693]  \u003cTASK\u003e\n[  137.182693]  ? show_regs+0x6c/0x80\n[  137.182693]  ? __die_body+0x24/0x70\n[  137.182693]  ? die_addr+0x4b/0x80\n[  137.182693]  ? exc_general_protection+0x126/0x230\n[  137.182693]  ? asm_exc_general_protection+0x2b/0x30\n[  137.182693]  ? __sev_platform_shutdown_locked+0x51/0x180\n[  137.182693]  sev_firmware_shutdown.isra.0+0x1e/0x80\n[  137.182693]  sev_dev_destroy+0x49/0x100\n[  137.182693]  psp_dev_destroy+0x47/0xb0\n[  137.182693]  sp_destroy+0xbb/0x240\n[  137.182693]  sp_pci_remove+0x45/0x60\n[  137.182693]  pci_device_remove+0xaa/0x1d0\n[  137.182693]  device_remove+0xc7/0x170\n[  137.182693]  really_probe+0x374/0xbe0\n[  137.182693]  ? srso_return_thunk+0x5/0x5f\n[  137.182693]  __driver_probe_device+0x199/0x460\n[  137.182693]  driver_probe_device+0x4e/0xd0\n[  137.182693]  __driver_attach+0x191/0x3d0\n[  137.182693]  ? __pfx___driver_attach+0x10/0x10\n[  137.182693]  bus_for_each_dev+0x100/0x190\n[  137.182693]  ? __pfx_bus_for_each_dev+0x10/0x10\n[  137.182693]  ? __kasan_check_read+0x15/0x20\n[  137.182693]  ? srso_return_thunk+0x5/0x5f\n[  137.182693]  ? _raw_spin_unlock+0x27/0x50\n[  137.182693]  driver_attach+0x41/0x60\n[  137.182693]  bus_add_driver+0x2a8/0x580\n[  137.182693]  driver_register+0x141/0x480\n[  137.182693]  __pci_register_driver+0x1d6/0x2a0\n[  137.182693]  ? srso_return_thunk+0x5/0x5f\n[  137.182693]  ? esrt_sysfs_init+0x1cd/0x5d0\n[  137.182693]  ? __pfx_sp_mod_init+0x10/0x10\n[  137.182693]  sp_pci_init+0x22/0x30\n[  137.182693]  sp_mod_init+0x14/0x30\n[  137.182693]  ? __pfx_sp_mod_init+0x10/0x10\n[  137.182693]  do_one_initcall+0xd1/0x470\n[  137.182693]  ? __pfx_do_one_initcall+0x10/0x10\n[  137.182693]  ? parameq+0x80/0xf0\n[  137.182693]  ? srso_return_thunk+0x5/0x5f\n[  137.182693]  ? __kmalloc+0x3b0/0x4e0\n[  137.182693]  ? kernel_init_freeable+0x92d/0x1050\n[  137.182693]  ? kasan_populate_vmalloc_pte+0x171/0x190\n[  137.182693]  ? srso_return_thunk+0x5/0x5f\n[  137.182693]  kernel_init_freeable+0xa64/0x1050\n[  137.182693]  ? __pfx_kernel_init+0x10/0x10\n[  137.182693]  kernel_init+0x24/0x160\n[  137.182693]  ? __switch_to_asm+0x3e/0x70\n[  137.182693]  ret_from_fork+0x40/0x80\n[  137.182693]  ? __pfx_kernel_init+0x1\n---truncated---",
  "id": "GHSA-2mrh-g8f4-xvjv",
  "modified": "2025-01-07T18:30:40Z",
  "published": "2024-04-03T15:30:42Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2024-26695"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/58054faf3bd29cd0b949b77efcb6157f66f401ed"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/7535ec350a5f09b5756a7607f5582913f21200f4"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/8731fe001a60581794ed9cf65da8cd304846a6fb"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/88aa493f393d2ee38ac140e1f6ac1881346e85d4"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/b5909f197f3b26aebedca7d8ac7b688fd993a266"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/ccb88e9549e7cfd8bcd511c538f437e20026e983"
    },
    {
      "type": "WEB",
      "url": "https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ]
}



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