{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2023-52586", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2024-03-02T21:55:42.570Z", "datePublished": "2024-03-06T06:45:20.913Z", "dateUpdated": "2026-08-05T09:10:29.188Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-05T09:10:29.188Z" }, "descriptions": [ { "lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/msm/dpu: Add mutex lock in control vblank irq\n\nAdd a mutex lock to control vblank irq to synchronize vblank\nenable/disable operations happening from different threads to prevent\nrace conditions while registering/unregistering the vblank irq callback.\n\nv4: -Removed vblank_ctl_lock from dpu_encoder_virt, so it is only a\n parameter of dpu_encoder_phys.\n -Switch from atomic refcnt to a simple int counter as mutex has\n now been added\nv3: Mistakenly did not change wording in last version. It is done now.\nv2: Slightly changed wording of commit message\n\nPatchwork: https://patchwork.freedesktop.org/patch/571854/" } ], "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 bug is reached through local DRM primary-node ioctls (DRM_IOCTL_WAIT_VBLANK / CRTC sequence and modeset/kickoff paths) into dpu_encoder_*_control_vblank_irq on Qualcomm MSM DPU hardware; there is no network or adjacent-protocol reachability.\nAC:L - An attacker who can open the DRM card node can drive both sides of the race—concurrent WAIT_VBLANK enable/disable (queued via msm vblank work) and irq_control from atomic kickoff/idle-PC/stop—so success does not depend on conditions outside attacker control.\nPR:L - WAIT_VBLANK and related sequence ioctls require only an open /dev/dri/cardN fd (no DRM_AUTH/MASTER/CAP_SYS_ADMIN), and DRM master for the modeset side is granted to the session/video-group user via logind without real root.\nUI:N - The attacker triggers both vblank and resource-control paths entirely through their own DRM ioctls and threads; no separate victim action is required.\nS:U - Impact remains within the host kernel’s security authority; this is a standard kernel race/UAF, not a VM escape, IOMMU bypass, or other cross-boundary scope change.\nC:H - The race can leave a vblank IRQ callback registered with phys_enc after refcount hits zero and the encoder is later freed (destroy only kfree’s phys without guaranteed unregister), yielding a use-after-free read of attacker-reclaimable heap via the IRQ handler.\nI:H - The same dangling IRQ callback UAF on phys_enc is heap-sprayable and provides a write/control-flow hijack primitive once the freed object is reused, consistent with scoring use-after-free as High integrity impact.\nA:H - Mismatched register/unregister also hits WARN_ON on double-register, NULL/stale dereferences in the IRQ callback, and kernel oops/panic on the dangling phys_enc path, fully disrupting availability." } ] } ], "affected": [ { "product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c", "drivers/gpu/drm/msm/disp/dpu1/dpu_encoder_phys.h", "drivers/gpu/drm/msm/disp/dpu1/dpu_encoder_phys_cmd.c", "drivers/gpu/drm/msm/disp/dpu1/dpu_encoder_phys_vid.c" ], "versions": [ { "version": "25fdd5933e4c0f5fe2ea5cd59994f8ac5fbe90ef", "lessThan": "14f109bf74dd67e1d0469fed859c8e506b0df53f", "status": "affected", "versionType": "git" }, { "version": "25fdd5933e4c0f5fe2ea5cd59994f8ac5fbe90ef", "lessThan": "45284ff733e4caf6c118aae5131eb7e7cf3eea5a", "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/gpu/drm/msm/disp/dpu1/dpu_encoder.c", "drivers/gpu/drm/msm/disp/dpu1/dpu_encoder_phys.h", "drivers/gpu/drm/msm/disp/dpu1/dpu_encoder_phys_cmd.c", "drivers/gpu/drm/msm/disp/dpu1/dpu_encoder_phys_vid.c" ], "versions": [ { "version": "4.19", "status": "affected" }, { "version": "0", "lessThan": "4.19", "status": "unaffected", "versionType": "semver" }, { "version": "6.7.4", "lessThanOrEqual": "6.7.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.8", "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": "4.19", "versionEndExcluding": "6.7.4" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.19", "versionEndExcluding": "6.8" } ] } ] } ], "references": [ { "url": "https://git.kernel.org/stable/c/14f109bf74dd67e1d0469fed859c8e506b0df53f" }, { "url": "https://git.kernel.org/stable/c/45284ff733e4caf6c118aae5131eb7e7cf3eea5a" } ], "title": "drm/msm/dpu: Add mutex lock in control vblank irq", "x_generator": { "engine": "bippy-1.2.0" } }, "adp": [ { "providerMetadata": { "orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-02T23:03:21.270Z" }, "title": "CVE Program Container", "references": [ { "url": "https://git.kernel.org/stable/c/14f109bf74dd67e1d0469fed859c8e506b0df53f", "tags": [ "x_transferred" ] }, { "url": "https://git.kernel.org/stable/c/45284ff733e4caf6c118aae5131eb7e7cf3eea5a", "tags": [ "x_transferred" ] } ] }, { "metrics": [ { "other": { "type": "ssvc", "content": { "id": "CVE-2023-52586", "role": "CISA Coordinator", "options": [ { "Exploitation": "none" }, { "Automatable": "no" }, { "Technical Impact": "partial" } ], "version": "2.0.3", "timestamp": "2024-09-10T15:56:01.645809Z" } } } ], "title": "CISA ADP Vulnrichment", "providerMetadata": { "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2024-09-11T17:33:32.350Z" } } ] } }