{ "dataType": "CVE_RECORD", "cveMetadata": { "cveId": "CVE-2024-35990", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2024-05-17T13:50:33.146Z", "datePublished": "2024-05-20T09:47:55.736Z", "dateUpdated": "2026-08-05T11:31:26.073Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-05T11:31:26.073Z" }, "descriptions": [ { "lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndma: xilinx_dpdma: Fix locking\n\nThere are several places where either chan->lock or chan->vchan.lock was\nnot held. Add appropriate locking. This fixes lockdep warnings like\n\n[ 31.077578] ------------[ cut here ]------------\n[ 31.077831] WARNING: CPU: 2 PID: 40 at drivers/dma/xilinx/xilinx_dpdma.c:834 xilinx_dpdma_chan_queue_transfer+0x274/0x5e0\n[ 31.077953] Modules linked in:\n[ 31.078019] CPU: 2 PID: 40 Comm: kworker/u12:1 Not tainted 6.6.20+ #98\n[ 31.078102] Hardware name: xlnx,zynqmp (DT)\n[ 31.078169] Workqueue: events_unbound deferred_probe_work_func\n[ 31.078272] pstate: 600000c5 (nZCv daIF -PAN -UAO -TCO -DIT -SSBS BTYPE=--)\n[ 31.078377] pc : xilinx_dpdma_chan_queue_transfer+0x274/0x5e0\n[ 31.078473] lr : xilinx_dpdma_chan_queue_transfer+0x270/0x5e0\n[ 31.078550] sp : ffffffc083bb2e10\n[ 31.078590] x29: ffffffc083bb2e10 x28: 0000000000000000 x27: ffffff880165a168\n[ 31.078754] x26: ffffff880164e920 x25: ffffff880164eab8 x24: ffffff880164d480\n[ 31.078920] x23: ffffff880165a148 x22: ffffff880164e988 x21: 0000000000000000\n[ 31.079132] x20: ffffffc082aa3000 x19: ffffff880164e880 x18: 0000000000000000\n[ 31.079295] x17: 0000000000000000 x16: 0000000000000000 x15: 0000000000000000\n[ 31.079453] x14: 0000000000000000 x13: ffffff8802263dc0 x12: 0000000000000001\n[ 31.079613] x11: 0001ffc083bb2e34 x10: 0001ff880164e98f x9 : 0001ffc082aa3def\n[ 31.079824] x8 : 0001ffc082aa3dec x7 : 0000000000000000 x6 : 0000000000000516\n[ 31.079982] x5 : ffffffc7f8d43000 x4 : ffffff88003c9c40 x3 : ffffffffffffffff\n[ 31.080147] x2 : ffffffc7f8d43000 x1 : 00000000000000c0 x0 : 0000000000000000\n[ 31.080307] Call trace:\n[ 31.080340] xilinx_dpdma_chan_queue_transfer+0x274/0x5e0\n[ 31.080518] xilinx_dpdma_issue_pending+0x11c/0x120\n[ 31.080595] zynqmp_disp_layer_update+0x180/0x3ac\n[ 31.080712] zynqmp_dpsub_plane_atomic_update+0x11c/0x21c\n[ 31.080825] drm_atomic_helper_commit_planes+0x20c/0x684\n[ 31.080951] drm_atomic_helper_commit_tail+0x5c/0xb0\n[ 31.081139] commit_tail+0x234/0x294\n[ 31.081246] drm_atomic_helper_commit+0x1f8/0x210\n[ 31.081363] drm_atomic_commit+0x100/0x140\n[ 31.081477] drm_client_modeset_commit_atomic+0x318/0x384\n[ 31.081634] drm_client_modeset_commit_locked+0x8c/0x24c\n[ 31.081725] drm_client_modeset_commit+0x34/0x5c\n[ 31.081812] __drm_fb_helper_restore_fbdev_mode_unlocked+0x104/0x168\n[ 31.081899] drm_fb_helper_set_par+0x50/0x70\n[ 31.081971] fbcon_init+0x538/0xc48\n[ 31.082047] visual_init+0x16c/0x23c\n[ 31.082207] do_bind_con_driver.isra.0+0x2d0/0x634\n[ 31.082320] do_take_over_console+0x24c/0x33c\n[ 31.082429] do_fbcon_takeover+0xbc/0x1b0\n[ 31.082503] fbcon_fb_registered+0x2d0/0x34c\n[ 31.082663] register_framebuffer+0x27c/0x38c\n[ 31.082767] __drm_fb_helper_initial_config_and_unlock+0x5c0/0x91c\n[ 31.082939] drm_fb_helper_initial_config+0x50/0x74\n[ 31.083012] drm_fbdev_dma_client_hotplug+0xb8/0x108\n[ 31.083115] drm_client_register+0xa0/0xf4\n[ 31.083195] drm_fbdev_dma_setup+0xb0/0x1cc\n[ 31.083293] zynqmp_dpsub_drm_init+0x45c/0x4e0\n[ 31.083431] zynqmp_dpsub_probe+0x444/0x5e0\n[ 31.083616] platform_probe+0x8c/0x13c\n[ 31.083713] really_probe+0x258/0x59c\n[ 31.083793] __driver_probe_device+0xc4/0x224\n[ 31.083878] driver_probe_device+0x70/0x1c0\n[ 31.083961] __device_attach_driver+0x108/0x1e0\n[ 31.084052] bus_for_each_drv+0x9c/0x100\n[ 31.084125] __device_attach+0x100/0x298\n[ 31.084207] device_initial_probe+0x14/0x20\n[ 31.084292] bus_probe_device+0xd8/0xdc\n[ 31.084368] deferred_probe_work_func+0x11c/0x180\n[ 31.084451] process_one_work+0x3ac/0x988\n[ 31.084643] worker_thread+0x398/0x694\n[ 31.084752] kthread+0x1bc/0x1c0\n[ 31.084848] ret_from_fork+0x10/0x20\n[ 31.084932] irq event stamp: 64549\n[ 31.084970] hardirqs last enabled at (64548): [] _raw_spin_unlock_irqrestore+0x80/0x90\n[ 31.085157]\n---truncated---" } ], "metrics": [ { "cvssV3_1": { "version": "3.1", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "baseScore": 7.8, "baseSeverity": "HIGH" }, "scenarios": [ { "lang": "en", "value": "AV:L - The vulnerable paths are reached only through ioctls on the local DRM device node /dev/dri/cardN (atomic commit / page flip / plane disable) on Xilinx ZynqMP hardware. There is no network-facing consumer of the DPDMA channels.\nAC:L - The attacker drives one side of the race directly (unbounded atomic commits and plane disables) and can align them to the periodic vsync interrupt using DRM vblank and page-flip events, so both sides are effectively under attacker control and the attempt is infinitely retriable.\nPR:L - Only an open handle on the DRM device with master rights is needed — the console/session user or a member of the video group — with no capability check on the path from the atomic ioctl down to xilinx_dpdma_issue_pending()/terminate_all(). Real root in the init namespace is not required.\nUI:N - The attacker issues its own atomic commits and format changes; no victim action is needed, and the racing vsync interrupt fires automatically at the display refresh rate.\nS:U - The corruption is of kernel heap objects (struct xilinx_dpdma_tx_desc and dma_pool software descriptors) within the kernel's own security authority, the classic local privilege-escalation shape rather than a VM or IOMMU boundary crossing.\nC:H - Unsynchronized access lets terminate_all() free descriptors that the vsync IRQ concurrently dereferences (chan->desc.pending, list_first_entry on desc->descriptors), a use-after-free read of reclaimed heap memory; the DPDMA engine also continues fetching from a freed hardware descriptor, painting attacker-chosen physical memory into the display pipeline.\nI:H - The same use-after-free yields write primitives into reclaimed memory — list_del() on a freed vdesc.node writes two pointers, and sw_desc->hw.desc_id and desc->error are written through stale pointers — which after heap spraying is exploitable for control-flow hijacking.\nA:H - Concurrent list_del/list_splice/list_add_tail on desc_issued and desc_completed corrupts the virt-dma lists and double-frees descriptors, producing list-debug BUGs, oopses and kernel panics, and the display DMA engine can be left permanently wedged." } ] } ], "affected": [ { "product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "drivers/dma/xilinx/xilinx_dpdma.c" ], "versions": [ { "version": "7cbb0c63de3fc218fd06ecfedb477772a4d12f76", "lessThan": "fcdd5bb4a8c81c64c1334d7e0aba41a8829a24de", "status": "affected", "versionType": "git" }, { "version": "7cbb0c63de3fc218fd06ecfedb477772a4d12f76", "lessThan": "0ccac964520a6f19e355652c8ca38af2a7f27076", "status": "affected", "versionType": "git" }, { "version": "7cbb0c63de3fc218fd06ecfedb477772a4d12f76", "lessThan": "8bf574183282d219cfa991f7df37aad491d74c11", "status": "affected", "versionType": "git" }, { "version": "7cbb0c63de3fc218fd06ecfedb477772a4d12f76", "lessThan": "8e3c94767cad5150198e4337c8b91f3bb068e14b", "status": "affected", "versionType": "git" }, { "version": "7cbb0c63de3fc218fd06ecfedb477772a4d12f76", "lessThan": "c660be571609e03e7d5972343536a736fcb31557", "status": "affected", "versionType": "git" }, { "version": "7cbb0c63de3fc218fd06ecfedb477772a4d12f76", "lessThan": "244296cc3a155199a8b080d19e645d7d49081a38", "status": "affected", "versionType": "git" } ] }, { "product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "drivers/dma/xilinx/xilinx_dpdma.c" ], "versions": [ { "version": "5.9", "status": "affected" }, { "version": "0", "lessThan": "5.9", "status": "unaffected", "versionType": "semver" }, { "version": "5.10.216", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.15.158", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.1.90", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.6.30", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.8.9", "lessThanOrEqual": "6.8.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.9", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix" } ] } ], "cpeApplicability": [ { "nodes": [ { "operator": "OR", "negate": false, "cpeMatch": [ { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.9", "versionEndExcluding": "5.10.216" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.9", "versionEndExcluding": "5.15.158" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.9", "versionEndExcluding": "6.1.90" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.9", "versionEndExcluding": "6.6.30" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.9", "versionEndExcluding": "6.8.9" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.9", "versionEndExcluding": "6.9" } ] } ] } ], "references": [ { "url": "https://git.kernel.org/stable/c/fcdd5bb4a8c81c64c1334d7e0aba41a8829a24de" }, { "url": "https://git.kernel.org/stable/c/0ccac964520a6f19e355652c8ca38af2a7f27076" }, { "url": "https://git.kernel.org/stable/c/8bf574183282d219cfa991f7df37aad491d74c11" }, { "url": "https://git.kernel.org/stable/c/8e3c94767cad5150198e4337c8b91f3bb068e14b" }, { "url": 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