{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2023-53314", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2025-09-16T16:08:59.562Z", "datePublished": "2025-09-16T16:11:51.435Z", "dateUpdated": "2026-08-05T09:13:27.940Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-05T09:13:27.940Z" }, "descriptions": [ { "lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nfbdev/ep93xx-fb: Do not assign to struct fb_info.dev\n\nDo not assing the Linux device to struct fb_info.dev. The call to\nregister_framebuffer() initializes the field to the fbdev device.\nDrivers should not override its value.\n\nFixes a bug where the driver incorrectly decreases the hardware\ndevice's reference counter and leaks the fbdev device.\n\nv2:\n\t* add Fixes tag (Dan)" } ], "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 in the ep93xx-fb platform driver probe/remove path for the on-SoC Cirrus EP93xx LCD controller; it is reached only locally via boot probe, module load, or sysfs bind/unbind, with no network or hot-plug physical entry point.\nAC:L - The incorrect info->dev assignment and resulting device refcount imbalance are deterministic on probe/unregister; the attacker does not depend on a race or an uncontrolled memory layout.\nPR:L - Although sysfs bind/unbind is root-owned 0200, the highest reasonable actor is a low-privileged local user on an EP93xx system where the framebuffer is already bound and /dev/fbN is usable, so PR:L is chosen over PR:H.\nUI:N - Exploitation does not require a separate victim action such as mounting a filesystem or manually opening a device beyond the attacker’s own local access.\nS:U - Impact stays within the host kernel’s device/refcount authority; this is not a VM escape, IOMMU bypass, or other cross-boundary break.\nC:H - Incorrectly dropping the hardware device’s reference count can free the live platform device while fbdev code still uses it, yielding a use-after-free that can be leveraged for arbitrary kernel memory disclosure.\nI:H - The same device UAF is exploitable for heap reuse and arbitrary write/control-flow hijack primitives against kernel memory, not merely a benign bookkeeping error.\nA:H - A device UAF or bad put on the platform device can oops/panic the kernel on unregister or later fbdev use, and the companion fbdev device leak is secondary to that crash impact." } ] } ], "affected": [ { "product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "drivers/video/fbdev/ep93xx-fb.c" ], "versions": [ { "version": "88017bda96a5fd568a982b01546c8fb1782dda62", "lessThan": "ffdf2b020db717853167391a3a8d912e13428fa6", "status": "affected", "versionType": "git" }, { "version": "88017bda96a5fd568a982b01546c8fb1782dda62", "lessThan": "1c6ff2a7c593db851f23e31ace2baf557ea9d0ff", "status": "affected", "versionType": "git" }, { "version": "88017bda96a5fd568a982b01546c8fb1782dda62", "lessThan": "8ffa40ff64aa43a9a28fcf209b48d86a3e0f4972", "status": "affected", "versionType": "git" }, { "version": "88017bda96a5fd568a982b01546c8fb1782dda62", "lessThan": "4aade6c9100a3537788b6a9c7ac481037d19efdf", "status": "affected", "versionType": "git" }, { "version": "88017bda96a5fd568a982b01546c8fb1782dda62", "lessThan": "309c27162afea79b3c7f8747bb650faf6923b639", "status": "affected", "versionType": "git" }, { "version": "88017bda96a5fd568a982b01546c8fb1782dda62", "lessThan": "f83c1b13f8154e0284448912756d0a351a1a602a", "status": "affected", "versionType": "git" }, { "version": "88017bda96a5fd568a982b01546c8fb1782dda62", "lessThan": "0517fc5a71333b315164736bbd32608894fbb872", "status": "affected", "versionType": "git" }, { "version": "88017bda96a5fd568a982b01546c8fb1782dda62", "lessThan": "f90a0e5265b60cdd3c77990e8105f79aa2fac994", "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/video/fbdev/ep93xx-fb.c" ], "versions": [ { "version": "2.6.32", "status": "affected" }, { "version": "0", "lessThan": "2.6.32", "status": "unaffected", "versionType": "semver" }, { "version": "4.14.326", "lessThanOrEqual": "4.14.*", "status": "unaffected", "versionType": "semver" }, { "version": "4.19.295", "lessThanOrEqual": "4.19.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.4.257", "lessThanOrEqual": "5.4.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.10.195", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.15.132", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.1.54", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.5.4", "lessThanOrEqual": "6.5.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.6", "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": "2.6.32", "versionEndExcluding": "4.14.326" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.32", "versionEndExcluding": "4.19.295" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.32", "versionEndExcluding": "5.4.257" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.32", "versionEndExcluding": "5.10.195" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.32", "versionEndExcluding": "5.15.132" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.32", "versionEndExcluding": "6.1.54" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.32", "versionEndExcluding": "6.5.4" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.32", "versionEndExcluding": "6.6" } ] } ] } ], "references": [ { "url": "https://git.kernel.org/stable/c/ffdf2b020db717853167391a3a8d912e13428fa6" }, { "url": "https://git.kernel.org/stable/c/1c6ff2a7c593db851f23e31ace2baf557ea9d0ff" }, { "url": "https://git.kernel.org/stable/c/8ffa40ff64aa43a9a28fcf209b48d86a3e0f4972" }, { "url": "https://git.kernel.org/stable/c/4aade6c9100a3537788b6a9c7ac481037d19efdf" }, { "url": "https://git.kernel.org/stable/c/309c27162afea79b3c7f8747bb650faf6923b639" }, { "url": "https://git.kernel.org/stable/c/f83c1b13f8154e0284448912756d0a351a1a602a" }, { "url": "https://git.kernel.org/stable/c/0517fc5a71333b315164736bbd32608894fbb872" }, { "url": "https://git.kernel.org/stable/c/f90a0e5265b60cdd3c77990e8105f79aa2fac994" } ], "title": "fbdev/ep93xx-fb: Do not assign to struct fb_info.dev", "x_generator": { "engine": "bippy-1.2.0" } }, "adp": [ { "metrics": [ { "cvssV3_1": { "scope": "UNCHANGED", "version": "3.1", "baseScore": 5.5, "attackVector": "LOCAL", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "NONE" } }, { "other": { "type": "ssvc", "content": { "id": "CVE-2023-53314", "role": "CISA Coordinator", "options": [ { "Exploitation": "none" }, { "Automatable": "no" }, { "Technical Impact": "partial" } ], "version": "2.0.3", "timestamp": "2026-01-14T18:25:34.219455Z" } } } ], "problemTypes": [ { "descriptions": [ { "lang": "en", "type": "CWE", "description": "CWE-noinfo Not enough information" } ] } ], "title": "CISA ADP Vulnrichment", "providerMetadata": { "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-01-14T18:32:57.524Z" } } ] } }