{"cve":"CVE-2024-41065","nvd":{"published":"2024-07-29T15:15:14.410","modified":"2026-06-17T07:47:12.230","status":"Modified","description":"In the Linux kernel, the following vulnerability has been resolved:\n\npowerpc/pseries: Whitelist dtl slub object for copying to userspace\n\nReading the dispatch trace log from /sys/kernel/debug/powerpc/dtl/cpu-*\nresults in a BUG() when the config CONFIG_HARDENED_USERCOPY is enabled as\nshown below.\n\n    kernel BUG at mm/usercopy.c:102!\n    Oops: Exception in kernel mode, sig: 5 [#1]\n    LE PAGE_SIZE=64K MMU=Radix SMP NR_CPUS=2048 NUMA pSeries\n    Modules linked in: xfs libcrc32c dm_service_time sd_mod t10_pi sg ibmvfc\n    scsi_transport_fc ibmveth pseries_wdt dm_multipath dm_mirror dm_region_hash dm_log dm_mod fuse\n    CPU: 27 PID: 1815 Comm: python3 Not tainted 6.10.0-rc3 #85\n    Hardware name: IBM,9040-MRX POWER10 (raw) 0x800200 0xf000006 of:IBM,FW1060.00 (NM1060_042) hv:phyp pSeries\n    NIP:  c0000000005d23d4 LR: c0000000005d23d0 CTR: 00000000006ee6f8\n    REGS: c000000120c078c0 TRAP: 0700   Not tainted  (6.10.0-rc3)\n    MSR:  8000000000029033 <SF,EE,ME,IR,DR,RI,LE>  CR: 2828220f  XER: 0000000e\n    CFAR: c0000000001fdc80 IRQMASK: 0\n    [ ... GPRs omitted ... ]\n    NIP [c0000000005d23d4] usercopy_abort+0x78/0xb0\n    LR [c0000000005d23d0] usercopy_abort+0x74/0xb0\n    Call Trace:\n     usercopy_abort+0x74/0xb0 (unreliable)\n     __check_heap_object+0xf8/0x120\n     check_heap_object+0x218/0x240\n     __check_object_size+0x84/0x1a4\n     dtl_file_read+0x17c/0x2c4\n     full_proxy_read+0x8c/0x110\n     vfs_read+0xdc/0x3a0\n     ksys_read+0x84/0x144\n     system_call_exception+0x124/0x330\n     system_call_vectored_common+0x15c/0x2ec\n    --- interrupt: 3000 at 0x7fff81f3ab34\n\nCommit 6d07d1cd300f (\"usercopy: Restrict non-usercopy caches to size 0\")\nrequires that only whitelisted areas in slab/slub objects can be copied to\nuserspace when usercopy hardening is enabled using CONFIG_HARDENED_USERCOPY.\nDtl contains hypervisor dispatch events which are expected to be read by\nprivileged users. Hence mark this safe for user access.\nSpecify useroffset=0 and usersize=DISPATCH_LOG_BYTES to whitelist the\nentire object.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","score":5.5},"cwes":[],"references":["https://git.kernel.org/stable/c/0f5892212c27be31792ef1daa89c8dac1b3047e4","https://git.kernel.org/stable/c/1a14150e1656f7a332a943154fc486504db4d586","https://git.kernel.org/stable/c/1ee68686d1e2a5da35d5650be0be1ce06fe2ceb2","https://git.kernel.org/stable/c/6b16098148ea58a67430d90e20476be2377c3acd","https://git.kernel.org/stable/c/a7b952941ce07e1e7a2cafd08c64a98e14f553e6"],"products":["linux:linux_kernel"],"source":"nvd","synced_at":"2026-10-19T21:53:51.317825789+00:00"},"epss":{"cve":"CVE-2024-41065","score":0.00225,"percentile":0.13238,"date":"2026-10-31"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}