Vulnerability-Lookup

FKIE_CVE-2024-26656

Vulnerability from fkie_nvd - Published: 2024-04-02 07:15 - Updated: 2026-08-04 11:16

Severity

7.8 (High) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
5.5 (Medium) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Summary

In the Linux kernel, the following vulnerability has been resolved: drm/amdgpu: fix use-after-free bug The bug can be triggered by sending a single amdgpu_gem_userptr_ioctl to the AMDGPU DRM driver on any ASICs with an invalid address and size. The bug was reported by Joonkyo Jung <joonkyoj@yonsei.ac.kr>. For example the following code: static void Syzkaller1(int fd) { struct drm_amdgpu_gem_userptr arg; int ret; arg.addr = 0xffffffffffff0000; arg.size = 0x80000000; /*2 Gb*/ arg.flags = 0x7; ret = drmIoctl(fd, 0xc1186451/*amdgpu_gem_userptr_ioctl*/, &arg); } Due to the address and size are not valid there is a failure in amdgpu_hmm_register->mmu_interval_notifier_insert->__mmu_interval_notifier_insert-> check_shl_overflow, but we even the amdgpu_hmm_register failure we still call amdgpu_hmm_unregister into amdgpu_gem_object_free which causes access to a bad address. The following stack is below when the issue is reproduced when Kazan is enabled: [ +0.000014] Hardware name: ASUS System Product Name/ROG STRIX B550-F GAMING (WI-FI), BIOS 1401 12/03/2020 [ +0.000009] RIP: 0010:mmu_interval_notifier_remove+0x327/0x340 [ +0.000017] Code: ff ff 49 89 44 24 08 48 b8 00 01 00 00 00 00 ad de 4c 89 f7 49 89 47 40 48 83 c0 22 49 89 47 48 e8 ce d1 2d 01 e9 32 ff ff ff <0f> 0b e9 16 ff ff ff 4c 89 ef e8 fa 14 b3 ff e9 36 ff ff ff e8 80 [ +0.000014] RSP: 0018:ffffc90002657988 EFLAGS: 00010246 [ +0.000013] RAX: 0000000000000000 RBX: 1ffff920004caf35 RCX: ffffffff8160565b [ +0.000011] RDX: dffffc0000000000 RSI: 0000000000000004 RDI: ffff8881a9f78260 [ +0.000010] RBP: ffffc90002657a70 R08: 0000000000000001 R09: fffff520004caf25 [ +0.000010] R10: 0000000000000003 R11: ffffffff8161d1d6 R12: ffff88810e988c00 [ +0.000010] R13: ffff888126fb5a00 R14: ffff88810e988c0c R15: ffff8881a9f78260 [ +0.000011] FS: 00007ff9ec848540(0000) GS:ffff8883cc880000(0000) knlGS:0000000000000000 [ +0.000012] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ +0.000010] CR2: 000055b3f7e14328 CR3: 00000001b5770000 CR4: 0000000000350ef0 [ +0.000010] Call Trace: [ +0.000006] <TASK> [ +0.000007] ? show_regs+0x6a/0x80 [ +0.000018] ? __warn+0xa5/0x1b0 [ +0.000019] ? mmu_interval_notifier_remove+0x327/0x340 [ +0.000018] ? report_bug+0x24a/0x290 [ +0.000022] ? handle_bug+0x46/0x90 [ +0.000015] ? exc_invalid_op+0x19/0x50 [ +0.000016] ? asm_exc_invalid_op+0x1b/0x20 [ +0.000017] ? kasan_save_stack+0x26/0x50 [ +0.000017] ? mmu_interval_notifier_remove+0x23b/0x340 [ +0.000019] ? mmu_interval_notifier_remove+0x327/0x340 [ +0.000019] ? mmu_interval_notifier_remove+0x23b/0x340 [ +0.000020] ? __pfx_mmu_interval_notifier_remove+0x10/0x10 [ +0.000017] ? kasan_save_alloc_info+0x1e/0x30 [ +0.000018] ? srso_return_thunk+0x5/0x5f [ +0.000014] ? __kasan_kmalloc+0xb1/0xc0 [ +0.000018] ? srso_return_thunk+0x5/0x5f [ +0.000013] ? __kasan_check_read+0x11/0x20 [ +0.000020] amdgpu_hmm_unregister+0x34/0x50 [amdgpu] [ +0.004695] amdgpu_gem_object_free+0x66/0xa0 [amdgpu] [ +0.004534] ? __pfx_amdgpu_gem_object_free+0x10/0x10 [amdgpu] [ +0.004291] ? do_syscall_64+0x5f/0xe0 [ +0.000023] ? srso_return_thunk+0x5/0x5f [ +0.000017] drm_gem_object_free+0x3b/0x50 [drm] [ +0.000489] amdgpu_gem_userptr_ioctl+0x306/0x500 [amdgpu] [ +0.004295] ? __pfx_amdgpu_gem_userptr_ioctl+0x10/0x10 [amdgpu] [ +0.004270] ? srso_return_thunk+0x5/0x5f [ +0.000014] ? __this_cpu_preempt_check+0x13/0x20 [ +0.000015] ? srso_return_thunk+0x5/0x5f [ +0.000013] ? sysvec_apic_timer_interrupt+0x57/0xc0 [ +0.000020] ? srso_return_thunk+0x5/0x5f [ +0.000014] ? asm_sysvec_apic_timer_interrupt+0x1b/0x20 [ +0.000022] ? drm_ioctl_kernel+0x17b/0x1f0 [drm] [ +0.000496] ? __pfx_amdgpu_gem_userptr_ioctl+0x10/0x10 [amdgpu] [ +0.004272] ? drm_ioctl_kernel+0x190/0x1f0 [drm] [ +0.000492] drm_ioctl_kernel+0x140/0x1f0 [drm] [ +0.000497] ? __pfx_amdgpu_gem_userptr_ioctl+0x10/0x10 [amdgpu] [ +0.004297] ? __pfx_drm_ioctl_kernel+0x10/0x10 [d ---truncated---

References

URL	Tags
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/22207fd5c80177b860279653d017474b2812af5e	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/22f665ecfd1225afa1309ace623157d12bb9bb0c	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/2e13f88e01ae7e28a7e831bf5c2409c4748e0a60
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/af054a5fb24a144f99895afce9519d709891894c	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/e87e08c94c9541b4e18c4c13f2f605935f512605	Patch
af854a3a-2127-422b-91ae-364da2661108	https://git.kernel.org/stable/c/22207fd5c80177b860279653d017474b2812af5e	Patch
af854a3a-2127-422b-91ae-364da2661108	https://git.kernel.org/stable/c/22f665ecfd1225afa1309ace623157d12bb9bb0c	Patch
af854a3a-2127-422b-91ae-364da2661108	https://git.kernel.org/stable/c/af054a5fb24a144f99895afce9519d709891894c	Patch
af854a3a-2127-422b-91ae-364da2661108	https://git.kernel.org/stable/c/e87e08c94c9541b4e18c4c13f2f605935f512605	Patch
af854a3a-2127-422b-91ae-364da2661108	https://lists.debian.org/debian-lts-announce/2025/05/msg00045.html

Impacted products

	Vendor	Product	Version
	linux	linux_kernel	*

JSON

To clipboard

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/gpu/drm/amd/amdgpu/amdgpu_hmm.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "2e13f88e01ae7e28a7e831bf5c2409c4748e0a60",
              "status": "affected",
              "version": "d38ceaf99ed015f2a0b9af3499791bd3a3daae21",
              "versionType": "git"
            },
            {
              "lessThan": "e87e08c94c9541b4e18c4c13f2f605935f512605",
              "status": "affected",
              "version": "d38ceaf99ed015f2a0b9af3499791bd3a3daae21",
              "versionType": "git"
            },
            {
              "lessThan": "af054a5fb24a144f99895afce9519d709891894c",
              "status": "affected",
              "version": "d38ceaf99ed015f2a0b9af3499791bd3a3daae21",
              "versionType": "git"
            },
            {
              "lessThan": "22f665ecfd1225afa1309ace623157d12bb9bb0c",
              "status": "affected",
              "version": "d38ceaf99ed015f2a0b9af3499791bd3a3daae21",
              "versionType": "git"
            },
            {
              "lessThan": "22207fd5c80177b860279653d017474b2812af5e",
              "status": "affected",
              "version": "d38ceaf99ed015f2a0b9af3499791bd3a3daae21",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/gpu/drm/amd/amdgpu/amdgpu_hmm.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "4.2"
            },
            {
              "lessThan": "4.2",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.132",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.24",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.7.*",
              "status": "unaffected",
              "version": "6.7.12",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.8.*",
              "status": "unaffected",
              "version": "6.8.3",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.9",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "18FE1EAE-C36C-49FC-A5E0-0A661CDC561E",
              "versionEndExcluding": "6.9",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/amdgpu: fix use-after-free bug\n\nThe bug can be triggered by sending a single amdgpu_gem_userptr_ioctl\nto the AMDGPU DRM driver on any ASICs with an invalid address and size.\nThe bug was reported by Joonkyo Jung \u003cjoonkyoj@yonsei.ac.kr\u003e.\nFor example the following code:\n\nstatic void Syzkaller1(int fd)\n{\n\tstruct drm_amdgpu_gem_userptr arg;\n\tint ret;\n\n\targ.addr = 0xffffffffffff0000;\n\targ.size = 0x80000000; /*2 Gb*/\n\targ.flags = 0x7;\n\tret = drmIoctl(fd, 0xc1186451/*amdgpu_gem_userptr_ioctl*/, \u0026arg);\n}\n\nDue to the address and size are not valid there is a failure in\namdgpu_hmm_register-\u003emmu_interval_notifier_insert-\u003e__mmu_interval_notifier_insert-\u003e\ncheck_shl_overflow, but we even the amdgpu_hmm_register failure we still call\namdgpu_hmm_unregister into  amdgpu_gem_object_free which causes access to a bad address.\nThe following stack is below when the issue is reproduced when Kazan is enabled:\n\n[  +0.000014] Hardware name: ASUS System Product Name/ROG STRIX B550-F GAMING (WI-FI), BIOS 1401 12/03/2020\n[  +0.000009] RIP: 0010:mmu_interval_notifier_remove+0x327/0x340\n[  +0.000017] Code: ff ff 49 89 44 24 08 48 b8 00 01 00 00 00 00 ad de 4c 89 f7 49 89 47 40 48 83 c0 22 49 89 47 48 e8 ce d1 2d 01 e9 32 ff ff ff \u003c0f\u003e 0b e9 16 ff ff ff 4c 89 ef e8 fa 14 b3 ff e9 36 ff ff ff e8 80\n[  +0.000014] RSP: 0018:ffffc90002657988 EFLAGS: 00010246\n[  +0.000013] RAX: 0000000000000000 RBX: 1ffff920004caf35 RCX: ffffffff8160565b\n[  +0.000011] RDX: dffffc0000000000 RSI: 0000000000000004 RDI: ffff8881a9f78260\n[  +0.000010] RBP: ffffc90002657a70 R08: 0000000000000001 R09: fffff520004caf25\n[  +0.000010] R10: 0000000000000003 R11: ffffffff8161d1d6 R12: ffff88810e988c00\n[  +0.000010] R13: ffff888126fb5a00 R14: ffff88810e988c0c R15: ffff8881a9f78260\n[  +0.000011] FS:  00007ff9ec848540(0000) GS:ffff8883cc880000(0000) knlGS:0000000000000000\n[  +0.000012] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033\n[  +0.000010] CR2: 000055b3f7e14328 CR3: 00000001b5770000 CR4: 0000000000350ef0\n[  +0.000010] Call Trace:\n[  +0.000006]  \u003cTASK\u003e\n[  +0.000007]  ? show_regs+0x6a/0x80\n[  +0.000018]  ? __warn+0xa5/0x1b0\n[  +0.000019]  ? mmu_interval_notifier_remove+0x327/0x340\n[  +0.000018]  ? report_bug+0x24a/0x290\n[  +0.000022]  ? handle_bug+0x46/0x90\n[  +0.000015]  ? exc_invalid_op+0x19/0x50\n[  +0.000016]  ? asm_exc_invalid_op+0x1b/0x20\n[  +0.000017]  ? kasan_save_stack+0x26/0x50\n[  +0.000017]  ? mmu_interval_notifier_remove+0x23b/0x340\n[  +0.000019]  ? mmu_interval_notifier_remove+0x327/0x340\n[  +0.000019]  ? mmu_interval_notifier_remove+0x23b/0x340\n[  +0.000020]  ? __pfx_mmu_interval_notifier_remove+0x10/0x10\n[  +0.000017]  ? kasan_save_alloc_info+0x1e/0x30\n[  +0.000018]  ? srso_return_thunk+0x5/0x5f\n[  +0.000014]  ? __kasan_kmalloc+0xb1/0xc0\n[  +0.000018]  ? srso_return_thunk+0x5/0x5f\n[  +0.000013]  ? __kasan_check_read+0x11/0x20\n[  +0.000020]  amdgpu_hmm_unregister+0x34/0x50 [amdgpu]\n[  +0.004695]  amdgpu_gem_object_free+0x66/0xa0 [amdgpu]\n[  +0.004534]  ? __pfx_amdgpu_gem_object_free+0x10/0x10 [amdgpu]\n[  +0.004291]  ? do_syscall_64+0x5f/0xe0\n[  +0.000023]  ? srso_return_thunk+0x5/0x5f\n[  +0.000017]  drm_gem_object_free+0x3b/0x50 [drm]\n[  +0.000489]  amdgpu_gem_userptr_ioctl+0x306/0x500 [amdgpu]\n[  +0.004295]  ? __pfx_amdgpu_gem_userptr_ioctl+0x10/0x10 [amdgpu]\n[  +0.004270]  ? srso_return_thunk+0x5/0x5f\n[  +0.000014]  ? __this_cpu_preempt_check+0x13/0x20\n[  +0.000015]  ? srso_return_thunk+0x5/0x5f\n[  +0.000013]  ? sysvec_apic_timer_interrupt+0x57/0xc0\n[  +0.000020]  ? srso_return_thunk+0x5/0x5f\n[  +0.000014]  ? asm_sysvec_apic_timer_interrupt+0x1b/0x20\n[  +0.000022]  ? drm_ioctl_kernel+0x17b/0x1f0 [drm]\n[  +0.000496]  ? __pfx_amdgpu_gem_userptr_ioctl+0x10/0x10 [amdgpu]\n[  +0.004272]  ? drm_ioctl_kernel+0x190/0x1f0 [drm]\n[  +0.000492]  drm_ioctl_kernel+0x140/0x1f0 [drm]\n[  +0.000497]  ? __pfx_amdgpu_gem_userptr_ioctl+0x10/0x10 [amdgpu]\n[  +0.004297]  ? __pfx_drm_ioctl_kernel+0x10/0x10 [d\n---truncated---"
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se resolvi\u00f3 la siguiente vulnerabilidad: drm/amdgpu: corrige el error de use-after-free. El error se puede activar enviando un solo amdgpu_gem_userptr_ioctl al controlador DRM AMDGPU en cualquier ASIC con una direcci\u00f3n y tama\u00f1o no v\u00e1lidos. El error fue reportado por Joonkyo Jung . Por ejemplo, el siguiente c\u00f3digo: static void Syzkaller1(int fd) { struct drm_amdgpu_gem_userptr arg; ret int; arg.addr = 0xffffffffffff0000; arg.tama\u00f1o = 0x80000000; /*2 Gb*/ arg.flags = 0x7; ret = drmIoctl(fd, 0xc1186451/*amdgpu_gem_userptr_ioctl*/, \u0026amp;arg); } Debido a que la direcci\u00f3n y el tama\u00f1o no son v\u00e1lidos, hay una falla en amdgpu_hmm_register-\u0026gt;mmu_interval_notifier_insert-\u0026gt;__mmu_interval_notifier_insert-\u0026gt; check_shl_overflow, pero incluso en la falla de amdgpu_hmm_register todav\u00eda llamamos a amdgpu_hmm_unregister en amdgpu_gem_object_free, lo que provoca el acceso a una direcci\u00f3n incorrecta. La siguiente pila se muestra a continuaci\u00f3n cuando el problema se reproduce cuando Kazan est\u00e1 habilitado: [+0.000014] Nombre del hardware: Nombre del producto del sistema ASUS/ROG STRIX B550-F GAMING (WI-FI), BIOS 1401 03/12/2020 [+0.000009] RIP: 0010:mmu_interval_notifier_remove+0x327/0x340 [ +0.000017] C\u00f3digo: ff ff 49 89 44 24 08 48 b8 00 01 00 00 00 00 ad de 4c 89 f7 49 89 47 40 48 83 c0 22 49 89 47 48 e8 ce d1 2d 01 e9 32 ff ff ff \u0026lt;0f\u0026gt; 0b e9 16 ff ff ff 4c 89 ef e8 fa 14 b3 ff e9 36 ff ff ff e8 80 [ +0.000014] RSP: 0018:ffffc90002657988 EFLAGS: 00010246 [ +0.000 013] RAX: 0000000000000000 RBX: 1ffff920004caf35 RCX: ffffffff8160565b [ +0.000011] RDX: dffffc0000000000 RSI: 00000000000000004 RDI: ffff8881a9f78260 [ +0.000010] RBP: ffffc90002 657a70 R08: 0000000000000001 R09: fffff520004caf25 [ +0.000010] R10: 0000000000000003 R11: ffffffff8161d1d6 R12: ffff88810e988c00 [ +0.000010] R1 3 : ffff888126fb5a00 R14: ffff88810e988c0c R15: ffff8881a9f78260 [ +0.000011] FS: 00007ff9ec848540(0000) GS:ffff8883cc880000(0000) knlGS:000000000 0000000 [ +0,000012] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ +0,000010] CR2: 000055b3f7e14328 CR3: 00000001b5770000 CR4: 0000000000350ef0 [+0.000010] Seguimiento de llamadas: [+0.000006]  [+0.000007] ? show_regs+0x6a/0x80 [+0.000018]? __advertir+0xa5/0x1b0 [ +0.000019] ? mmu_interval_notifier_remove+0x327/0x340 [+0.000018]? report_bug+0x24a/0x290 [+0.000022] ? handle_bug+0x46/0x90 [+0.000015]? exc_invalid_op+0x19/0x50 [+0.000016]? asm_exc_invalid_op+0x1b/0x20 [+0.000017]? kasan_save_stack+0x26/0x50 [+0.000017]? mmu_interval_notifier_remove+0x23b/0x340 [+0.000019]? mmu_interval_notifier_remove+0x327/0x340 [+0.000019]? mmu_interval_notifier_remove+0x23b/0x340 [+0.000020]? __pfx_mmu_interval_notifier_remove+0x10/0x10 [ +0.000017] ? kasan_save_alloc_info+0x1e/0x30 [ +0.000018] ? srso_return_thunk+0x5/0x5f [+0.000014]? __kasan_kmalloc+0xb1/0xc0 [ +0.000018] ? srso_return_thunk+0x5/0x5f [+0.000013]? __kasan_check_read+0x11/0x20 [ +0.000020] amdgpu_hmm_unregister+0x34/0x50 [amdgpu] [ +0.004695] amdgpu_gem_object_free+0x66/0xa0 [amdgpu] [ +0.004534] ? __pfx_amdgpu_gem_object_free+0x10/0x10 [amdgpu] [ +0.004291] ? do_syscall_64+0x5f/0xe0 [+0.000023]? srso_return_thunk+0x5/0x5f [ +0.000017] drm_gem_object_free+0x3b/0x50 [drm] [ +0.000489] amdgpu_gem_userptr_ioctl+0x306/0x500 [amdgpu] [ +0.004295] ? __pfx_amdgpu_gem_userptr_ioctl+0x10/0x10 [amdgpu] [ +0.004270] ? srso_return_thunk+0x5/0x5f [+0.000014]? __this_cpu_preempt_check+0x13/0x20 [ +0.000015] ? srso_return_thunk+0x5/0x5f [+0.000013]? sysvec_apic_timer_interrupt+0x57/0xc0 [+0.000020]? srso_return_thunk+0x5/0x5f [+0.000014]? asm_sysvec_apic_timer_interrupt+0x1b/0x20 [+0.000022]? drm_ioctl_kernel+0x17b/0x1f0 [drm] [ +0.000496] ? __pfx_amdgpu_gem_userptr_ioctl+0x10/0x10 [amdgpu] [ +0.004272] ? drm_ioctl_kernel+0x190/0x1f0 [drm] [ +0.000492] drm_ioctl_kernel+0x140/0x1f0 [drm] [ +0.000497] ? __pfx_amdgpu_gem_userptr_ioctl+0x10/0x10 [amdgpu] [ +0.004297] ? __pfx_drm_ioctl_kernel+0x10/0x10 [d ---truncado---"
    }
  ],
  "id": "CVE-2024-26656",
  "lastModified": "2026-08-04T11:16:53.907",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "LOCAL",
          "availabilityImpact": "HIGH",
          "baseScore": 7.8,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 1.8,
        "impactScore": 5.9,
        "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "type": "Secondary"
      },
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "LOCAL",
          "availabilityImpact": "HIGH",
          "baseScore": 5.5,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 1.8,
        "impactScore": 3.6,
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2024-26656",
          "options": [
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              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2024-04-02T14:54:50.822759Z",
          "version": "2.0.3"
        }
      }
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  },
  "published": "2024-04-02T07:15:42.760",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
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      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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    },
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      "tags": [
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      ],
      "url": "https://git.kernel.org/stable/c/22207fd5c80177b860279653d017474b2812af5e"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/22f665ecfd1225afa1309ace623157d12bb9bb0c"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Patch"
      ],
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      "source": "af854a3a-2127-422b-91ae-364da2661108",
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    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "https://lists.debian.org/debian-lts-announce/2025/05/msg00045.html"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-416"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}

CVE-2024-26656 (GCVE-0-2024-26656)

Vulnerability from cvelistv5 – Published: 2024-04-02 06:08 – Updated: 2026-08-05 11:26

Title

drm/amdgpu: fix use-after-free bug

Summary

Severity

7.8 (High)


                        
                          CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2024-04-02 14:54 UTC

Assigner

Linux mitre root

References

6 references

URL	Tags
https://git.kernel.org/stable/c/2e13f88e01ae7e28a…
https://git.kernel.org/stable/c/e87e08c94c9541b4e…
https://git.kernel.org/stable/c/af054a5fb24a144f9…
https://git.kernel.org/stable/c/22f665ecfd1225afa…
https://git.kernel.org/stable/c/22207fd5c80177b86…
https://lists.debian.org/debian-lts-announce/2025…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: d38ceaf99ed015f2a0b9af3499791bd3a3daae21 , < 2e13f88e01ae7e28a7e831bf5c2409c4748e0a60 (git) Affected: d38ceaf99ed015f2a0b9af3499791bd3a3daae21 , < e87e08c94c9541b4e18c4c13f2f605935f512605 (git) Affected: d38ceaf99ed015f2a0b9af3499791bd3a3daae21 , < af054a5fb24a144f99895afce9519d709891894c (git) Affected: d38ceaf99ed015f2a0b9af3499791bd3a3daae21 , < 22f665ecfd1225afa1309ace623157d12bb9bb0c (git) Affected: d38ceaf99ed015f2a0b9af3499791bd3a3daae21 , < 22207fd5c80177b860279653d017474b2812af5e (git)
Linux	Linux	Affected: 4.2 Unaffected: 0 , < 4.2 (semver) Unaffected: 6.1.132 , ≤ 6.1.* (semver) Unaffected: 6.6.24 , ≤ 6.6.* (semver) Unaffected: 6.7.12 , ≤ 6.7.* (semver) Unaffected: 6.8.3 , ≤ 6.8.* (semver) Unaffected: 6.9 , ≤ * (original_commit_for_fix)

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2024-26656",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2024-04-02T14:54:50.822759Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2024-07-05T17:21:23.249Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      },
      {
        "providerMetadata": {
          "dateUpdated": "2025-11-03T19:29:28.444Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
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        "references": [
          {
            "tags": [
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            "url": "https://git.kernel.org/stable/c/e87e08c94c9541b4e18c4c13f2f605935f512605"
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          {
            "tags": [
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            "url": "https://git.kernel.org/stable/c/af054a5fb24a144f99895afce9519d709891894c"
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          {
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            "url": "https://git.kernel.org/stable/c/22f665ecfd1225afa1309ace623157d12bb9bb0c"
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          {
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            "url": "https://git.kernel.org/stable/c/22207fd5c80177b860279653d017474b2812af5e"
          },
          {
            "url": "https://lists.debian.org/debian-lts-announce/2025/05/msg00045.html"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/gpu/drm/amd/amdgpu/amdgpu_hmm.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
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              "status": "affected",
              "version": "d38ceaf99ed015f2a0b9af3499791bd3a3daae21",
              "versionType": "git"
            },
            {
              "lessThan": "e87e08c94c9541b4e18c4c13f2f605935f512605",
              "status": "affected",
              "version": "d38ceaf99ed015f2a0b9af3499791bd3a3daae21",
              "versionType": "git"
            },
            {
              "lessThan": "af054a5fb24a144f99895afce9519d709891894c",
              "status": "affected",
              "version": "d38ceaf99ed015f2a0b9af3499791bd3a3daae21",
              "versionType": "git"
            },
            {
              "lessThan": "22f665ecfd1225afa1309ace623157d12bb9bb0c",
              "status": "affected",
              "version": "d38ceaf99ed015f2a0b9af3499791bd3a3daae21",
              "versionType": "git"
            },
            {
              "lessThan": "22207fd5c80177b860279653d017474b2812af5e",
              "status": "affected",
              "version": "d38ceaf99ed015f2a0b9af3499791bd3a3daae21",
              "versionType": "git"
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        },
        {
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          "product": "Linux",
          "programFiles": [
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          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "4.2"
            },
            {
              "lessThan": "4.2",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.132",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.24",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.7.*",
              "status": "unaffected",
              "version": "6.7.12",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.8.*",
              "status": "unaffected",
              "version": "6.8.3",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.9",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.1.132",
                  "versionStartIncluding": "4.2",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.6.24",
                  "versionStartIncluding": "4.2",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.7.12",
                  "versionStartIncluding": "4.2",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.8.3",
                  "versionStartIncluding": "4.2",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.9",
                  "versionStartIncluding": "4.2",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/amdgpu: fix use-after-free bug\n\nThe bug can be triggered by sending a single amdgpu_gem_userptr_ioctl\nto the AMDGPU DRM driver on any ASICs with an invalid address and size.\nThe bug was reported by Joonkyo Jung \u003cjoonkyoj@yonsei.ac.kr\u003e.\nFor example the following code:\n\nstatic void Syzkaller1(int fd)\n{\n\tstruct drm_amdgpu_gem_userptr arg;\n\tint ret;\n\n\targ.addr = 0xffffffffffff0000;\n\targ.size = 0x80000000; /*2 Gb*/\n\targ.flags = 0x7;\n\tret = drmIoctl(fd, 0xc1186451/*amdgpu_gem_userptr_ioctl*/, \u0026arg);\n}\n\nDue to the address and size are not valid there is a failure in\namdgpu_hmm_register-\u003emmu_interval_notifier_insert-\u003e__mmu_interval_notifier_insert-\u003e\ncheck_shl_overflow, but we even the amdgpu_hmm_register failure we still call\namdgpu_hmm_unregister into  amdgpu_gem_object_free which causes access to a bad address.\nThe following stack is below when the issue is reproduced when Kazan is enabled:\n\n[  +0.000014] Hardware name: ASUS System Product Name/ROG STRIX B550-F GAMING (WI-FI), BIOS 1401 12/03/2020\n[  +0.000009] RIP: 0010:mmu_interval_notifier_remove+0x327/0x340\n[  +0.000017] Code: ff ff 49 89 44 24 08 48 b8 00 01 00 00 00 00 ad de 4c 89 f7 49 89 47 40 48 83 c0 22 49 89 47 48 e8 ce d1 2d 01 e9 32 ff ff ff \u003c0f\u003e 0b e9 16 ff ff ff 4c 89 ef e8 fa 14 b3 ff e9 36 ff ff ff e8 80\n[  +0.000014] RSP: 0018:ffffc90002657988 EFLAGS: 00010246\n[  +0.000013] RAX: 0000000000000000 RBX: 1ffff920004caf35 RCX: ffffffff8160565b\n[  +0.000011] RDX: dffffc0000000000 RSI: 0000000000000004 RDI: ffff8881a9f78260\n[  +0.000010] RBP: ffffc90002657a70 R08: 0000000000000001 R09: fffff520004caf25\n[  +0.000010] R10: 0000000000000003 R11: ffffffff8161d1d6 R12: ffff88810e988c00\n[  +0.000010] R13: ffff888126fb5a00 R14: ffff88810e988c0c R15: ffff8881a9f78260\n[  +0.000011] FS:  00007ff9ec848540(0000) GS:ffff8883cc880000(0000) knlGS:0000000000000000\n[  +0.000012] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033\n[  +0.000010] CR2: 000055b3f7e14328 CR3: 00000001b5770000 CR4: 0000000000350ef0\n[  +0.000010] Call Trace:\n[  +0.000006]  \u003cTASK\u003e\n[  +0.000007]  ? show_regs+0x6a/0x80\n[  +0.000018]  ? __warn+0xa5/0x1b0\n[  +0.000019]  ? mmu_interval_notifier_remove+0x327/0x340\n[  +0.000018]  ? report_bug+0x24a/0x290\n[  +0.000022]  ? handle_bug+0x46/0x90\n[  +0.000015]  ? exc_invalid_op+0x19/0x50\n[  +0.000016]  ? asm_exc_invalid_op+0x1b/0x20\n[  +0.000017]  ? kasan_save_stack+0x26/0x50\n[  +0.000017]  ? mmu_interval_notifier_remove+0x23b/0x340\n[  +0.000019]  ? mmu_interval_notifier_remove+0x327/0x340\n[  +0.000019]  ? mmu_interval_notifier_remove+0x23b/0x340\n[  +0.000020]  ? __pfx_mmu_interval_notifier_remove+0x10/0x10\n[  +0.000017]  ? kasan_save_alloc_info+0x1e/0x30\n[  +0.000018]  ? srso_return_thunk+0x5/0x5f\n[  +0.000014]  ? __kasan_kmalloc+0xb1/0xc0\n[  +0.000018]  ? srso_return_thunk+0x5/0x5f\n[  +0.000013]  ? __kasan_check_read+0x11/0x20\n[  +0.000020]  amdgpu_hmm_unregister+0x34/0x50 [amdgpu]\n[  +0.004695]  amdgpu_gem_object_free+0x66/0xa0 [amdgpu]\n[  +0.004534]  ? __pfx_amdgpu_gem_object_free+0x10/0x10 [amdgpu]\n[  +0.004291]  ? do_syscall_64+0x5f/0xe0\n[  +0.000023]  ? srso_return_thunk+0x5/0x5f\n[  +0.000017]  drm_gem_object_free+0x3b/0x50 [drm]\n[  +0.000489]  amdgpu_gem_userptr_ioctl+0x306/0x500 [amdgpu]\n[  +0.004295]  ? __pfx_amdgpu_gem_userptr_ioctl+0x10/0x10 [amdgpu]\n[  +0.004270]  ? srso_return_thunk+0x5/0x5f\n[  +0.000014]  ? __this_cpu_preempt_check+0x13/0x20\n[  +0.000015]  ? srso_return_thunk+0x5/0x5f\n[  +0.000013]  ? sysvec_apic_timer_interrupt+0x57/0xc0\n[  +0.000020]  ? srso_return_thunk+0x5/0x5f\n[  +0.000014]  ? asm_sysvec_apic_timer_interrupt+0x1b/0x20\n[  +0.000022]  ? drm_ioctl_kernel+0x17b/0x1f0 [drm]\n[  +0.000496]  ? __pfx_amdgpu_gem_userptr_ioctl+0x10/0x10 [amdgpu]\n[  +0.004272]  ? drm_ioctl_kernel+0x190/0x1f0 [drm]\n[  +0.000492]  drm_ioctl_kernel+0x140/0x1f0 [drm]\n[  +0.000497]  ? __pfx_amdgpu_gem_userptr_ioctl+0x10/0x10 [amdgpu]\n[  +0.004297]  ? __pfx_drm_ioctl_kernel+0x10/0x10 [d\n---truncated---"
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "baseScore": 7.8,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
          "scenarios": [
            {
              "lang": "en",
              "value": "AV:L - Triggered via `DRM_IOCTL_AMDGPU_GEM_USERPTR` on a local AMD GPU device node (`/dev/dri/renderD*` or `card*`); there is no remote or adjacent-network path to `amdgpu_gem_userptr_ioctl()`.\nAC:L - A single ioctl with a fully attacker-chosen `addr`/`size` (e.g. 0xffffffffffff0000 / 0x80000000) deterministically overflows the interval-tree range check and reaches the unbalanced `mmdrop()`; there is no race and no dependence on memory layout.\nPR:L - The ioctl is flagged `DRM_RENDER_ALLOW`, so `drm_ioctl_permit()` waives `DRM_AUTH` for render clients \u2014 any unprivileged local user or sandboxed app with an open render node (standard for desktop sessions, Android apps, and GPU-enabled containers) qualifies, with no capability check anywhere on the path.\nUI:N - The attacker performs the entire sequence itself by opening the render node and issuing the ioctl; no victim action or cooperation is required.\nS:U - The corruption stays within the kernel\u0027s own security authority \u2014 the calling process\u0027s `mm_struct` and mmu-notifier tree \u2014 with no crossing of a VM, IOMMU, or hypervisor boundary.\nC:H - The unbalanced `mmdrop()` frees the live `mm_struct` and its PGD while still in use; reclaiming those objects yields page-table control and therefore arbitrary kernel and cross-process memory disclosure.\nI:H - The same use-after-free plus the `interval_tree_remove()` of a never-inserted node give heap-spray-controlled write primitives \u2014 freeing an in-use PGD allows forging page-table entries for arbitrary memory modification and privilege escalation.\nA:H - The path hits a `WARN_ON` (immediate panic under `panic_on_warn`), corrupts the mm\u0027s notifier interval tree, and tears down the running process\u0027s page tables, reliably crashing the kernel."
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-05T11:26:34.438Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/2e13f88e01ae7e28a7e831bf5c2409c4748e0a60"
        },
        {
          "url": "https://git.kernel.org/stable/c/e87e08c94c9541b4e18c4c13f2f605935f512605"
        },
        {
          "url": "https://git.kernel.org/stable/c/af054a5fb24a144f99895afce9519d709891894c"
        },
        {
          "url": "https://git.kernel.org/stable/c/22f665ecfd1225afa1309ace623157d12bb9bb0c"
        },
        {
          "url": "https://git.kernel.org/stable/c/22207fd5c80177b860279653d017474b2812af5e"
        }
      ],
      "title": "drm/amdgpu: fix use-after-free bug",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2024-26656",
    "datePublished": "2024-04-02T06:08:43.558Z",
    "dateReserved": "2024-02-19T14:20:24.145Z",
    "dateUpdated": "2026-08-05T11:26:34.438Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.