{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2023-53084", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2025-05-02T15:51:43.550Z", "datePublished": "2025-05-02T15:55:32.319Z", "dateUpdated": "2026-08-05T09:12:40.219Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-05T09:12:40.219Z" }, "descriptions": [ { "lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/shmem-helper: Remove another errant put in error path\n\ndrm_gem_shmem_mmap() doesn't own reference in error code path, resulting\nin the dma-buf shmem GEM object getting prematurely freed leading to a\nlater use-after-free." } ], "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 via local DRM render-node ioctls (PRIME_FD_TO_HANDLE, driver MMAP_BO) and mmap(2) on the DRM device fd, not via network packet processing.\nAC:L - An attacker fully controls the trigger by importing a dma-buf and mmaping it such that dma_buf_mmap fails (e.g., MAP_PRIVATE against exporters like CMA heap/udmabuf that reject private mappings), causing a deterministic double-put with no uncontrolled race.\nPR:L - Render nodes (/dev/dri/renderD*) and PRIME/MMAP_BO ioctls are available to unprivileged users (DRM_RENDER_ALLOW), including Android apps and desktop users in the render/video group; no real root or CAP_SYS_ADMIN is required.\nUI:N - The attacker opens their own DRM render node, imports their own dma-buf, and mmaps it; no action by another user is required.\nS:U - This is a standard in-kernel use-after-free enabling local privilege escalation within the same OS security authority, with no VM/IOMMU/sandbox boundary crossed.\nC:H - The errant put frees the imported shmem GEM object while a handle still references it, yielding a classic use-after-free that can be leveraged for arbitrary kernel memory disclosure.\nI:H - Use-after-free of the GEM object enables heap reuse and corruption primitives suitable for arbitrary write and control-flow hijacking in the kernel.\nA:H - The premature free leads to kernel oops/panic on subsequent use of the dangling GEM object, so availability impact is high even without full exploitation." } ] } ], "affected": [ { "product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "drivers/gpu/drm/drm_gem_shmem_helper.c" ], "versions": [ { "version": "f49a51bfdc8ea717c97ccd4cc98b7e6daaa5553a", "lessThan": "684c7372bbd6447c2e86a2a84e97a1478604d21f", "status": "affected", "versionType": "git" }, { "version": "f49a51bfdc8ea717c97ccd4cc98b7e6daaa5553a", "lessThan": "5cfb617967b05f8f27e862c97db1fabd8485f4db", "status": "affected", "versionType": "git" }, { "version": "f49a51bfdc8ea717c97ccd4cc98b7e6daaa5553a", "lessThan": "dede8c14a37a7ac458f9add56154a074ed78e7cf", "status": "affected", "versionType": "git" }, { "version": "f49a51bfdc8ea717c97ccd4cc98b7e6daaa5553a", "lessThan": "77d26c824aa5a7e0681ef1d5b75fe538d746addc", "status": "affected", "versionType": "git" }, { "version": "f49a51bfdc8ea717c97ccd4cc98b7e6daaa5553a", "lessThan": "ee9adb7a45516cfa536ca92253d7ae59d56db9e4", "status": "affected", "versionType": "git" }, { "version": "4655afcf0e3874af03afff8c8704b52350bdba47", "status": "affected", "versionType": "git" }, { "version": "5.9.5", "lessThan": "5.10", "status": "affected", "versionType": "semver" } ] }, { "product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "drivers/gpu/drm/drm_gem_shmem_helper.c" ], "versions": [ { "version": "5.10", "status": "affected" }, { "version": "0", "lessThan": "5.10", "status": "unaffected", "versionType": "semver" }, { "version": "5.10.176", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.15.104", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.1.21", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.2.8", "lessThanOrEqual": "6.2.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.3", "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": "5.10", "versionEndExcluding": "5.10.176" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.10", "versionEndExcluding": "5.15.104" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.10", "versionEndExcluding": "6.1.21" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.10", "versionEndExcluding": "6.2.8" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.10", "versionEndExcluding": "6.3" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.9.5" } ] } ] } ], "references": [ { "url": "https://git.kernel.org/stable/c/684c7372bbd6447c2e86a2a84e97a1478604d21f" }, { "url": "https://git.kernel.org/stable/c/5cfb617967b05f8f27e862c97db1fabd8485f4db" }, { "url": "https://git.kernel.org/stable/c/dede8c14a37a7ac458f9add56154a074ed78e7cf" }, { "url": "https://git.kernel.org/stable/c/77d26c824aa5a7e0681ef1d5b75fe538d746addc" }, { "url": "https://git.kernel.org/stable/c/ee9adb7a45516cfa536ca92253d7ae59d56db9e4" } ], "title": "drm/shmem-helper: Remove another errant put in error path", "x_generator": { "engine": "bippy-1.2.0" } } } }