CVE-2024-43895

{"id": "CVE-2024-43895", "cveTags": [], "metrics": {"cvssMetricV31": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 5.5, "attackVector": "LOCAL", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "NONE"}, "impactScore": 3.6, "exploitabilityScore": 1.8}]}, "published": "2024-08-26T11:15:04.333", "references": [{"url": "https://git.kernel.org/stable/c/282f0a482ee61d5e863512f3c4fcec90216c20d9", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/50e376f1fe3bf571d0645ddf48ad37eb58323919", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/5357141b4c2e2b332b6f11607ba8c5fbc2669a10", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/70275bb960c71d313254473d38c14e7101cee5ad", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/718d83f66fb07b2cab89a1fc984613a00e3db18f", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "vulnStatus": "Modified", "weaknesses": [{"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "CWE-476"}]}], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/amd/display: Skip Recompute DSC Params if no Stream on Link\n\n[why]\nEncounter NULL pointer dereference uner mst + dsc setup.\n\nBUG: kernel NULL pointer dereference, address: 0000000000000008\n PGD 0 P4D 0\n Oops: 0000 [#1] PREEMPT SMP NOPTI\n CPU: 4 PID: 917 Comm: sway Not tainted 6.3.9-arch1-1 #1 124dc55df4f5272ccb409f39ef4872fc2b3376a2\n Hardware name: LENOVO 20NKS01Y00/20NKS01Y00, BIOS R12ET61W(1.31 ) 07/28/2022\n RIP: 0010:drm_dp_atomic_find_time_slots+0x5e/0x260 [drm_display_helper]\n Code: 01 00 00 48 8b 85 60 05 00 00 48 63 80 88 00 00 00 3b 43 28 0f 8d 2e 01 00 00 48 8b 53 30 48 8d 04 80 48 8d 04 c2 48 8b 40 18 <48> 8>\n RSP: 0018:ffff960cc2df77d8 EFLAGS: 00010293\n RAX: 0000000000000000 RBX: ffff8afb87e81280 RCX: 0000000000000224\n RDX: ffff8afb9ee37c00 RSI: ffff8afb8da1a578 RDI: ffff8afb87e81280\n RBP: ffff8afb83d67000 R08: 0000000000000001 R09: ffff8afb9652f850\n R10: ffff960cc2df7908 R11: 0000000000000002 R12: 0000000000000000\n R13: ffff8afb8d7688a0 R14: ffff8afb8da1a578 R15: 0000000000000224\n FS: 00007f4dac35ce00(0000) GS:ffff8afe30b00000(0000) knlGS:0000000000000000\n CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033\n CR2: 0000000000000008 CR3: 000000010ddc6000 CR4: 00000000003506e0\n Call Trace:\n<TASK>\n ? __die+0x23/0x70\n ? page_fault_oops+0x171/0x4e0\n ? plist_add+0xbe/0x100\n ? exc_page_fault+0x7c/0x180\n ? asm_exc_page_fault+0x26/0x30\n ? drm_dp_atomic_find_time_slots+0x5e/0x260 [drm_display_helper 0e67723696438d8e02b741593dd50d80b44c2026]\n ? drm_dp_atomic_find_time_slots+0x28/0x260 [drm_display_helper 0e67723696438d8e02b741593dd50d80b44c2026]\n compute_mst_dsc_configs_for_link+0x2ff/0xa40 [amdgpu 62e600d2a75e9158e1cd0a243bdc8e6da040c054]\n ? fill_plane_buffer_attributes+0x419/0x510 [amdgpu 62e600d2a75e9158e1cd0a243bdc8e6da040c054]\n compute_mst_dsc_configs_for_state+0x1e1/0x250 [amdgpu 62e600d2a75e9158e1cd0a243bdc8e6da040c054]\n amdgpu_dm_atomic_check+0xecd/0x1190 [amdgpu 62e600d2a75e9158e1cd0a243bdc8e6da040c054]\n drm_atomic_check_only+0x5c5/0xa40\n drm_mode_atomic_ioctl+0x76e/0xbc0\n\n[how]\ndsc recompute should be skipped if no mode change detected on the new\nrequest. If detected, keep checking whether the stream is already on\ncurrent state or not.\n\n(cherry picked from commit 8151a6c13111b465dbabe07c19f572f7cbd16fef)"}, {"lang": "es", "value": "En el kernel de Linux, se resolvi\u00f3 la siguiente vulnerabilidad: drm/amd/display: omitir volver a calcular los par\u00e1metros DSC si no hay transmisi\u00f3n en el enlace [por qu\u00e9] Se encuentra una desreferencia del puntero NULL en la configuraci\u00f3n de mst + dsc. ERROR: desreferencia del puntero NULL del kernel, direcci\u00f3n: 00000000000000008 PGD 0 P4D 0 Ups: 0000 [#1] PREEMPT SMP NOPTI CPU: 4 PID: 917 Comm: sway Not tainted 6.3.9-arch1-1 #1 124dc55df4f5272ccb409f39ef48 72fc2b3376a2 Nombre del hardware: LENOVO 20NKS01Y00 /20NKS01Y00, BIOS R12ET61W(1.31) 28/07/2022 RIP: 0010:drm_dp_atomic_find_time_slots+0x5e/0x260 [drm_display_helper] C\u00f3digo: 01 00 00 48 8b 85 60 05 00 00 48 63 80 88 00 00 00 3b 43 28 0f 8d 2e 01 00 00 48 8b 53 30 48 8d 04 80 48 8d 04 c2 48 8b 40 18 &lt;48&gt; 8&gt; RSP: 0018:ffff960cc2df77d8 EFLAGS: 00010293 RAX: 0000000000000000 RBX: ffff8afb87e81280 RCX: 0000000000000224 RDX: ffff8afb9ee37c00 RSI: ffff8afb8da1a578 RDI: ffff8afb87e81280 RBP: ffff8afb83d67000 R08: 0000000000000001 R09: ffff8afb9652f850 R10: ffff960cc2df7908 R11: 00000000000000002 R12: 0000000000000000 R13: 8afb8d7688a0 R14: ffff8afb8da1a578 R15: 0000000000000224 FS: 00007f4dac35ce00(0000) GS:ffff8afe30b00000(0000) knlGS:0000000000000000 CS: 0000ES: 0000 CR0: 0000000080050033 CR2: 00000000000000008 CR3: 000000010ddc6000 CR4: 00000000003506e0 Seguimiento de llamadas: ? __morir+0x23/0x70 ? page_fault_oops+0x171/0x4e0? plist_add+0xbe/0x100? exc_page_fault+0x7c/0x180? asm_exc_page_fault+0x26/0x30? drm_dp_atomic_find_time_slots+0x5e/0x260 [drm_display_helper 0e67723696438d8e02b741593dd50d80b44c2026]? drm_dp_atomic_find_time_slots+0x28/0x260 [drm_display_helper 0e67723696438d8e02b741593dd50d80b44c2026] compute_mst_dsc_configs_for_link+0x2ff/0xa40 [amdgpu 62e600d2a75e91 58e1cd0a243bdc8e6da040c054] ? fill_plane_buffer_attributes+0x419/0x510 [amdgpu 62e600d2a75e9158e1cd0a243bdc8e6da040c054] compute_mst_dsc_configs_for_state+0x1e1/0x250 [amdgpu 62e600d2a75e9158e1cd0a24 3bdc8e6da040c054] amdgpu_dm_atomic_check+0xecd/0x1190 [amdgpu 62e600d2a75e9158e1cd0a243bdc8e6da040c054] drm_atomic_check_only+0x5c5/0xa40 drm_mode_atomic_ioctl+0x76e/ 0xbc0 [c\u00f3mo] se debe omitir el rec\u00e1lculo de dsc si no se detecta ning\u00fan cambio de modo sobre la nueva solicitud. Si se detecta, siga comprobando si la transmisi\u00f3n ya se encuentra en el estado actual o no. (cereza escogida del commit 8151a6c13111b465dbabe07c19f572f7cbd16fef)"}], "lastModified": "2024-10-10T12:15:04.350", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "ECB889E5-9368-4201-9049-7289757A0B8D", "versionEndExcluding": "6.1.105"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "FA11941E-81FB-484C-B583-881EEB488340", "versionEndExcluding": "6.6.46", "versionStartIncluding": "6.2"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "D074AE50-4A5E-499C-A2FD-75FD60DEA560", "versionEndExcluding": "6.10.5", "versionStartIncluding": "6.7"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.11:rc1:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "8B3CE743-2126-47A3-8B7C-822B502CF119"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.11:rc2:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "4DEB27E7-30AA-45CC-8934-B89263EF3551"}], "operator": "OR"}]}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}