{"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): [<ffffffc081adf35c>] _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":"https://git.kernel.org/stable/c/c660be571609e03e7d5972343536a736fcb31557"},{"url":"https://git.kernel.org/stable/c/244296cc3a155199a8b080d19e645d7d49081a38"}],"title":"dma: 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