{"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"}}]}}