CVE-2024-35810

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The buffer objects in vmw_plane_state\ninstead of using the builtin map_and_cache were trying to handle\nthe lifetime of the mapped memory themselves, leading to crashes.\n\nUse the map_and_cache instead of trying to manage the lifetime of the\nbuffer objects held by the vmw_plane_state.\n\nFixes kernel oops'es in IGT's kms_cursor_legacy forked-bo."}], "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 only through DRM ioctls (DRM_IOCTL_MODE_CURSOR/CURSOR2/ATOMIC) on the local /dev/dri/card0 node of a VMware guest. There is no network-facing path into the vmwgfx KMS cursor plane code.\nAC:L - The attacker controls both sides of the race: legacy cursor updates are explicitly \"fully unsynced\" in the atomic helpers (flip_done is completed immediately), so the cleanup_fb worker overlaps the atomic_update by design, and forking processes that hammer cursor updates on a shared BO reproduces it reliably \u2014 this is precisely the IGT kms_cursor_legacy forked-bo reproducer.\nPR:L - An unprivileged local user with access to the DRM card node suffices \u2014 drm_master_open() grants mastership to the first opener when no master exists, with no capability check, and logind ACLs grant the console/session user that access in a VMware guest. No root or CAP_SYS_ADMIN is needed.\nUI:N - The attacker's own processes issue all the cursor ioctls that create and win the race; no action by any other user is required.\nS:U - The corrupted mappings and buffer objects are all guest-kernel memory managed by the same vmwgfx/TTM authority; there is no guest-to-host escape or IOMMU boundary crossing.\nC:H - After the concurrent ttm_bo_kunmap()/vunmap(), the vmalloc VA range can be reused by other kernel subsystems (kernel stacks, modules, BPF), and the stale pointer is then read by memcmp() and by memcpy(header + 1, image, image_size) into the cursor MOB that gets rendered as the visible cursor \u2014 a use-after-unmap read that discloses recycled kernel memory.\nI:H - This is a use-after-free/use-after-unmap class bug: racing kmap/kunmap on the shared vmw_bo->map allows double-vunmap of a VA that another subsystem may have re-mapped, and the concurrent cursor-MOB swap/put lets vmw_cursor_update_mob() memcpy into a buffer object that has been returned to the cache or freed, giving heap-spray and write primitives.\nA:H - The commit explicitly states it \"Fixes kernel oops'es in IGT's kms_cursor_legacy forked-bo\"; dereferencing the vunmap'd address faults in kernel context, and ttm_bo_kunmap()'s default case is a BUG(), so the race yields a reliable kernel crash."}]}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/gpu/drm/vmwgfx/vmwgfx_kms.c"], "versions": [{"version": "bb6780aa5a1d99e86757c0c96bfae65a46cf839e", "lessThan": "86cb706a40b7e6b2221ee49a298a65ad9b46c02d", "status": "affected", "versionType": "git"}, {"version": "bb6780aa5a1d99e86757c0c96bfae65a46cf839e", "lessThan": "104a5b2772bc7c0715ae7355ccf9d294a472765c", "status": "affected", "versionType": "git"}, {"version": "bb6780aa5a1d99e86757c0c96bfae65a46cf839e", "lessThan": "ed381800ea6d9a4c7f199235a471c0c48100f0ae", "status": "affected", "versionType": "git"}, {"version": "bb6780aa5a1d99e86757c0c96bfae65a46cf839e", "lessThan": "9a9e8a7159ca09af9b1a300a6c8e8b6ff7501c76", "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/vmwgfx/vmwgfx_kms.c"], "versions": [{"version": "6.2", "status": "affected"}, {"version": "0", "lessThan": "6.2", "status": "unaffected", "versionType": "semver"}, {"version": "6.6.24", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.7.12", "lessThanOrEqual": "6.7.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.8.3", "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": "6.2", "versionEndExcluding": "6.6.24"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.2", "versionEndExcluding": "6.7.12"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.2", "versionEndExcluding": "6.8.3"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.2", "versionEndExcluding": "6.9"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/86cb706a40b7e6b2221ee49a298a65ad9b46c02d"}, {"url": "https://git.kernel.org/stable/c/104a5b2772bc7c0715ae7355ccf9d294a472765c"}, {"url": "https://git.kernel.org/stable/c/ed381800ea6d9a4c7f199235a471c0c48100f0ae"}, {"url": "https://git.kernel.org/stable/c/9a9e8a7159ca09af9b1a300a6c8e8b6ff7501c76"}], "title": "drm/vmwgfx: Fix the lifetime of the bo cursor memory", "x_generator": {"engine": "bippy-1.2.0"}}, "adp": [{"providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-02T03:21:47.494Z"}, "title": "CVE Program Container", "references": [{"url": "https://git.kernel.org/stable/c/86cb706a40b7e6b2221ee49a298a65ad9b46c02d", "tags": ["x_transferred"]}, {"url": "https://git.kernel.org/stable/c/104a5b2772bc7c0715ae7355ccf9d294a472765c", "tags": ["x_transferred"]}, {"url": "https://git.kernel.org/stable/c/ed381800ea6d9a4c7f199235a471c0c48100f0ae", "tags": ["x_transferred"]}, {"url": "https://git.kernel.org/stable/c/9a9e8a7159ca09af9b1a300a6c8e8b6ff7501c76", "tags": ["x_transferred"]}]}, {"metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2024-35810", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2024-09-10T15:42:38.486904Z"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2024-09-11T17:32:51.914Z"}}]}}

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There is no network-facing path into the vmwgfx KMS cursor plane code.\nAC:L - The attacker controls both sides of the race: legacy cursor updates are explicitly \"fully unsynced\" in the atomic helpers (flip_done is completed immediately), so the cleanup_fb worker overlaps the atomic_update by design, and forking processes that hammer cursor updates on a shared BO reproduces it reliably \u2014 this is precisely the IGT kms_cursor_legacy forked-bo reproducer.\nPR:L - An unprivileged local user with access to the DRM card node suffices \u2014 drm_master_open() grants mastership to the first opener when no master exists, with no capability check, and logind ACLs grant the console/session user that access in a VMware guest. No root or CAP_SYS_ADMIN is needed.\nUI:N - The attacker's own processes issue all the cursor ioctls that create and win the race; no action by any other user is required.\nS:U - The corrupted mappings and buffer objects are all guest-kernel memory managed by the same vmwgfx/TTM authority; there is no guest-to-host escape or IOMMU boundary crossing.\nC:H - After the concurrent ttm_bo_kunmap()/vunmap(), the vmalloc VA range can be reused by other kernel subsystems (kernel stacks, modules, BPF), and the stale pointer is then read by memcmp() and by memcpy(header + 1, image, image_size) into the cursor MOB that gets rendered as the visible cursor \u2014 a use-after-unmap read that discloses recycled kernel memory.\nI:H - This is a use-after-free/use-after-unmap class bug: racing kmap/kunmap on the shared vmw_bo->map allows double-vunmap of a VA that another subsystem may have re-mapped, and the concurrent cursor-MOB swap/put lets vmw_cursor_update_mob() memcpy into a buffer object that has been returned to the cache or freed, giving heap-spray and write primitives.\nA:H - The commit explicitly states it \"Fixes kernel oops'es in IGT's kms_cursor_legacy forked-bo\"; dereferencing the vunmap'd address faults in kernel context, and ttm_bo_kunmap()'s default case is a BUG(), so the race yields a reliable kernel crash."}]}], "affected": [{"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "bb6780aa5a1d99e86757c0c96bfae65a46cf839e", "lessThan": "86cb706a40b7e6b2221ee49a298a65ad9b46c02d", "versionType": "git"}, {"status": "affected", "version": "bb6780aa5a1d99e86757c0c96bfae65a46cf839e", "lessThan": "104a5b2772bc7c0715ae7355ccf9d294a472765c", "versionType": "git"}, {"status": "affected", "version": "bb6780aa5a1d99e86757c0c96bfae65a46cf839e", "lessThan": "ed381800ea6d9a4c7f199235a471c0c48100f0ae", "versionType": "git"}, {"status": "affected", "version": "bb6780aa5a1d99e86757c0c96bfae65a46cf839e", "lessThan": "9a9e8a7159ca09af9b1a300a6c8e8b6ff7501c76", "versionType": "git"}], "programFiles": ["drivers/gpu/drm/vmwgfx/vmwgfx_kms.c"], "defaultStatus": "unaffected"}, {"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "6.2"}, {"status": "unaffected", "version": "0", "lessThan": "6.2", "versionType": "semver"}, {"status": "unaffected", "version": "6.6.24", "versionType": "semver", "lessThanOrEqual": "6.6.*"}, {"status": "unaffected", "version": "6.7.12", "versionType": "semver", "lessThanOrEqual": "6.7.*"}, {"status": "unaffected", "version": "6.8.3", "versionType": "semver", "lessThanOrEqual": "6.8.*"}, {"status": "unaffected", "version": "6.9", "versionType": "original_commit_for_fix", "lessThanOrEqual": "*"}], "programFiles": ["drivers/gpu/drm/vmwgfx/vmwgfx_kms.c"], "defaultStatus": "affected"}], "references": [{"url": "https://git.kernel.org/stable/c/86cb706a40b7e6b2221ee49a298a65ad9b46c02d"}, {"url": "https://git.kernel.org/stable/c/104a5b2772bc7c0715ae7355ccf9d294a472765c"}, {"url": "https://git.kernel.org/stable/c/ed381800ea6d9a4c7f199235a471c0c48100f0ae"}, {"url": "https://git.kernel.org/stable/c/9a9e8a7159ca09af9b1a300a6c8e8b6ff7501c76"}], "x_generator": {"engine": "bippy-1.2.0"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/vmwgfx: Fix the lifetime of the bo cursor memory\n\nThe cleanup can be dispatched while the atomic update is still active,\nwhich means that the memory acquired in the atomic update needs to\nnot be invalidated by the cleanup. 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The buffer objects in vmw_plane_state\ninstead of using the builtin map_and_cache were trying to handle\nthe lifetime of the mapped memory themselves, leading to crashes.\n\nUse the map_and_cache instead of trying to manage the lifetime of the\nbuffer objects held by the vmw_plane_state.\n\nFixes kernel oops'es in IGT's kms_cursor_legacy forked-bo."}, {"lang": "es", "value": " En el kernel de Linux, se resolvi\u00f3 la siguiente vulnerabilidad: drm/vmwgfx: corregida la vida \u00fatil de la memoria del cursor bo. La sanitizaci\u00f3n se puede realizar mientras la actualizaci\u00f3n at\u00f3mica a\u00fan est\u00e1 activa, lo que significa que la memoria adquirida en la actualizaci\u00f3n at\u00f3mica no necesita ser invalidado por la limpieza. Los objetos del b\u00fafer en vmw_plane_state, en lugar de utilizar el map_and_cache incorporado, intentaban manejar ellos mismos la vida \u00fatil de la memoria asignada, lo que provocaba fallos. Utilice map_and_cache en lugar de intentar administrar la vida \u00fatil de los objetos del b\u00fafer retenidos por vmw_plane_state. Corrige los errores del kernel en kms_cursor_legacy forked-bo de IGT."}], "id": "CVE-2024-35810", "lastModified": "2026-08-04T11:17:55.003", "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-2024-35810", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2024-09-10T15:42:38.486904Z", "version": "2.0.3"}}]}, "published": "2024-05-17T14:15:14.970", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/104a5b2772bc7c0715ae7355ccf9d294a472765c"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/86cb706a40b7e6b2221ee49a298a65ad9b46c02d"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/9a9e8a7159ca09af9b1a300a6c8e8b6ff7501c76"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/ed381800ea6d9a4c7f199235a471c0c48100f0ae"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/104a5b2772bc7c0715ae7355ccf9d294a472765c"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/86cb706a40b7e6b2221ee49a298a65ad9b46c02d"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/9a9e8a7159ca09af9b1a300a6c8e8b6ff7501c76"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/ed381800ea6d9a4c7f199235a471c0c48100f0ae"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "NVD-CWE-noinfo"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"affected_release": [{"advisory": "RHSA-2024:5102", "cpe": "cpe:/a:redhat:enterprise_linux:8::nfv", "package": "kernel-rt-0:4.18.0-553.16.1.rt7.357.el8_10", "product_name": "Red Hat Enterprise Linux 8", "release_date": "2024-08-08T00:00:00Z"}, {"advisory": "RHSA-2024:5101", "cpe": "cpe:/o:redhat:enterprise_linux:8", "package": "kernel-0:4.18.0-553.16.1.el8_10", "product_name": "Red Hat Enterprise Linux 8", "release_date": "2024-08-08T00:00:00Z"}, {"advisory": "RHSA-2024:9315", "cpe": "cpe:/a:redhat:enterprise_linux:9", "package": "kernel-0:5.14.0-503.11.1.el9_5", "product_name": "Red Hat Enterprise Linux 9", "release_date": "2024-11-12T00:00:00Z"}, {"advisory": "RHSA-2024:9315", "cpe": "cpe:/o:redhat:enterprise_linux:9", "package": "kernel-0:5.14.0-503.11.1.el9_5", "product_name": "Red Hat Enterprise Linux 9", "release_date": "2024-11-12T00:00:00Z"}, {"advisory": "RHSA-2025:3510", "cpe": "cpe:/a:redhat:rhel_eus:9.4", "package": "kernel-0:5.14.0-427.62.1.el9_4", "product_name": "Red Hat Enterprise Linux 9.4 Extended Update Support", "release_date": "2025-04-02T00:00:00Z"}], "bugzilla": {"description": "kernel: drm/vmwgfx: Fix the lifetime of the bo cursor memory", "id": "2281215", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2281215"}, "csaw": false, "cvss3": {"cvss3_base_score": "5.5", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "status": "verified"}, "details": ["In the Linux kernel, the following vulnerability has been resolved:\ndrm/vmwgfx: Fix the lifetime of the bo cursor memory\nThe cleanup can be dispatched while the atomic update is still active,\nwhich means that the memory acquired in the atomic update needs to\nnot be invalidated by the cleanup. The buffer objects in vmw_plane_state\ninstead of using the builtin map_and_cache were trying to handle\nthe lifetime of the mapped memory themselves, leading to crashes.\nUse the map_and_cache instead of trying to manage the lifetime of the\nbuffer objects held by the vmw_plane_state.\nFixes kernel oops'es in IGT's kms_cursor_legacy forked-bo.", "A vulnerability was found in the drm/vmwgfx driver in the Linux kernel, concerning the lifetime management of the buffer object (BO) cursor memory. This issue occurs due to improper handling of the cursor memory's lifecycle, which could lead to use-after-free errors or crashes."], "mitigation": {"lang": "en:us", "value": "Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability."}, "name": "CVE-2024-35810", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Out of support scope", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Out of support scope", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Out of support scope", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2024-05-17T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2024-35810\nhttps://nvd.nist.gov/vuln/detail/CVE-2024-35810\nhttps://lore.kernel.org/linux-cve-announce/2024051741-CVE-2024-35810-1b33@gregkh/T"], "threat_severity": "Moderate"}

{}