{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2025-38653", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2025-04-16T04:51:24.030Z", "datePublished": "2025-08-22T16:00:57.413Z", "dateUpdated": "2026-08-05T12:03:41.738Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-05T12:03:41.738Z" }, "descriptions": [ { "lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nproc: use the same treatment to check proc_lseek as ones for proc_read_iter et.al\n\nCheck pde->proc_ops->proc_lseek directly may cause UAF in rmmod scenario. \nIt's a gap in proc_reg_open() after commit 654b33ada4ab(\"proc: fix UAF in\nproc_get_inode()\"). Followed by AI Viro's suggestion, fix it in same\nmanner." } ], "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 code is reached through the open(2) syscall on a procfs entry, requiring local access to the system. There is no network-facing path to proc_reg_open().\nAC:L - The attacker fully controls their side of the race and can spin unbounded threads on open(), while widening the lookup-to-open window with memory pressure since proc_get_inode() allocates GFP_KERNEL; on Android/embedded targets the module-teardown side is also reachable by toggling user-facing device state (WiFi/BT/camera), so the race can be provoked at will.\nPR:L - Any unprivileged local user can open a world-readable module-created /proc entry (e.g. /proc/net/*, /proc/scsi/*, /proc/driver/*); the unguarded dereference happens before any capability or use_pde() gate.\nUI:N - The attacker's own open() performs the faulty dereference; no victim needs to open a file, mount a filesystem, or otherwise interact.\nS:U - The use-after-free occurs in kernel memory and its impact stays within the kernel's own security authority; no VM, IOMMU, or sandbox boundary is crossed.\nC:H - This is a use-after-free read of freed module memory through a dangling pde->proc_ops pointer, and freed-region contents that an attacker can groom (by triggering module loads that recycle the region) are consumed by the kernel and leak back through the resulting FMODE_LSEEK state.\nI:H - Use-after-free of a function-pointer table entry means kernel control-flow-relevant data is read from memory whose contents an attacker may influence via heap/module-region grooming, and such UAF conditions are treated as exploitable for corruption of kernel state.\nA:H - The dereference targets vmalloc-backed module memory that is unmapped on free, producing the same kernel page-fault oops documented in the companion fix 654b33ada4ab; the crash can be retriggered on every module unload." } ] } ], "affected": [ { "product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "fs/proc/generic.c", "fs/proc/inode.c", "fs/proc/internal.h", "include/linux/proc_fs.h" ], "versions": [ { "version": "3f61631d47f115b83c935d0039f95cb68b0c8ab7", "lessThan": "c35b0feb80b48720dfbbf4e33759c7be3faaebb6", "status": "affected", "versionType": "git" }, { "version": "3f61631d47f115b83c935d0039f95cb68b0c8ab7", "lessThan": "33c778ea0bd0fa62ff590497e72562ff90f82b13", "status": "affected", "versionType": "git" }, { "version": "3f61631d47f115b83c935d0039f95cb68b0c8ab7", "lessThan": "fc1072d934f687e1221d685cf1a49a5068318f34", "status": "affected", "versionType": "git" }, { "version": "3f61631d47f115b83c935d0039f95cb68b0c8ab7", "lessThan": "d136502e04d8853a9aecb335d07bbefd7a1519a8", "status": "affected", "versionType": "git" }, { "version": "3f61631d47f115b83c935d0039f95cb68b0c8ab7", "lessThan": "1fccbfbae1dd36198dc47feac696563244ad81d3", "status": "affected", "versionType": "git" }, { "version": "3f61631d47f115b83c935d0039f95cb68b0c8ab7", "lessThan": "ff7ec8dc1b646296f8d94c39339e8d3833d16c05", "status": "affected", "versionType": "git" } ] }, { "product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "fs/proc/generic.c", "fs/proc/inode.c", "fs/proc/internal.h", "include/linux/proc_fs.h" ], "versions": [ { "version": "6.0", "status": "affected" }, { "version": "0", "lessThan": "6.0", "status": "unaffected", "versionType": "semver" }, { "version": "6.1.148", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.6.102", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.12.42", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.15.10", "lessThanOrEqual": "6.15.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.16.1", "lessThanOrEqual": "6.16.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.17", "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": "6.0", "versionEndExcluding": "6.1.148" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.0", "versionEndExcluding": "6.6.102" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.0", "versionEndExcluding": "6.12.42" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.0", "versionEndExcluding": "6.15.10" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.0", "versionEndExcluding": "6.16.1" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.0", "versionEndExcluding": "6.17" } ] } ] } ], "references": [ { "url": "https://git.kernel.org/stable/c/c35b0feb80b48720dfbbf4e33759c7be3faaebb6" }, { "url": "https://git.kernel.org/stable/c/33c778ea0bd0fa62ff590497e72562ff90f82b13" }, { "url": "https://git.kernel.org/stable/c/fc1072d934f687e1221d685cf1a49a5068318f34" }, { "url": "https://git.kernel.org/stable/c/d136502e04d8853a9aecb335d07bbefd7a1519a8" }, { "url": "https://git.kernel.org/stable/c/1fccbfbae1dd36198dc47feac696563244ad81d3" }, { "url": "https://git.kernel.org/stable/c/ff7ec8dc1b646296f8d94c39339e8d3833d16c05" } ], "title": "proc: use the same treatment to check proc_lseek as ones for proc_read_iter et.al", "x_generator": { "engine": "bippy-1.2.0" } }, "adp": [ { "title": "CVE Program Container", "references": [ { "url": "https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html" } ], "providerMetadata": { "orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2025-11-03T17:40:46.576Z" } } ] } }