{ "schema_version": "1.6.1", "id": "RPI-CVE-2024-46785", "modified": "2026-10-07T17:22:01Z", "upstream": [ "CVE-2024-46785" ], "published": "2024-09-18T07:17:19Z", "summary": "eventfs: Use list_del_rcu() for SRCU protected list variable", "details": "In the Linux kernel, the following vulnerability has been resolved:\n\neventfs: Use list_del_rcu() for SRCU protected list variable\n\nChi Zhiling reported:\n\n We found a null pointer accessing in tracefs[1], the reason is that the\n variable 'ei_child' is set to LIST_POISON1, that means the list was\n removed in eventfs_remove_rec. so when access the ei_child->is_freed, the\n panic triggered.\n\n by the way, the following script can reproduce this panic\n\n loop1 (){\n while true\n do\n echo \"p:kp submit_bio\" > /sys/kernel/debug/tracing/kprobe_events\n echo \"\" > /sys/kernel/debug/tracing/kprobe_events\n done\n }\n loop2 (){\n while true\n do\n tree /sys/kernel/debug/tracing/events/kprobes/\n done\n }\n loop1 &\n loop2\n\n [1]:\n [ 1147.959632][T17331] Unable to handle kernel paging request at virtual address dead000000000150\n [ 1147.968239][T17331] Mem abort info:\n [ 1147.971739][T17331] ESR = 0x0000000096000004\n [ 1147.976172][T17331] EC = 0x25: DABT (current EL), IL = 32 bits\n [ 1147.982171][T17331] SET = 0, FnV = 0\n [ 1147.985906][T17331] EA = 0, S1PTW = 0\n [ 1147.989734][T17331] FSC = 0x04: level 0 translation fault\n [ 1147.995292][T17331] Data abort info:\n [ 1147.998858][T17331] ISV = 0, ISS = 0x00000004, ISS2 = 0x00000000\n [ 1148.005023][T17331] CM = 0, WnR = 0, TnD = 0, TagAccess = 0\n [ 1148.010759][T17331] GCS = 0, Overlay = 0, DirtyBit = 0, Xs = 0\n [ 1148.016752][T17331] [dead000000000150] address between user and kernel address ranges\n [ 1148.024571][T17331] Internal error: Oops: 0000000096000004 [#1] SMP\n [ 1148.030825][T17331] Modules linked in: team_mode_loadbalance team nlmon act_gact cls_flower sch_ingress bonding tls macvlan dummy ib_core bridge stp llc veth amdgpu amdxcp mfd_core gpu_sched drm_exec drm_buddy radeon crct10dif_ce video drm_suballoc_helper ghash_ce drm_ttm_helper sha2_ce ttm sha256_arm64 i2c_algo_bit sha1_ce sbsa_gwdt cp210x drm_display_helper cec sr_mod cdrom drm_kms_helper binfmt_misc sg loop fuse drm dm_mod nfnetlink ip_tables autofs4 [last unloaded: tls]\n [ 1148.072808][T17331] CPU: 3 PID: 17331 Comm: ls Tainted: G W ------- ---- 6.6.43 #2\n [ 1148.081751][T17331] Source Version: 21b3b386e948bedd29369af66f3e98ab01b1c650\n [ 1148.088783][T17331] Hardware name: Greatwall GW-001M1A-FTF/GW-001M1A-FTF, BIOS KunLun BIOS V4.0 07/16/2020\n [ 1148.098419][T17331] pstate: 20000005 (nzCv daif -PAN -UAO -TCO -DIT -SSBS BTYPE=--)\n [ 1148.106060][T17331] pc : eventfs_iterate+0x2c0/0x398\n [ 1148.111017][T17331] lr : eventfs_iterate+0x2fc/0x398\n [ 1148.115969][T17331] sp : ffff80008d56bbd0\n [ 1148.119964][T17331] x29: ffff80008d56bbf0 x28: ffff001ff5be2600 x27: 0000000000000000\n [ 1148.127781][T17331] x26: ffff001ff52ca4e0 x25: 0000000000009977 x24: dead000000000100\n [ 1148.135598][T17331] x23: 0000000000000000 x22: 000000000000000b x21: ffff800082645f10\n [ 1148.143415][T17331] x20: ffff001fddf87c70 x19: ffff80008d56bc90 x18: 0000000000000000\n [ 1148.151231][T17331] x17: 0000000000000000 x16: 0000000000000000 x15: ffff001ff52ca4e0\n [ 1148.159048][T17331] x14: 0000000000000000 x13: 0000000000000000 x12: 0000000000000000\n [ 1148.166864][T17331] x11: 0000000000000000 x10: 0000000000000000 x9 : ffff8000804391d0\n [ 1148.174680][T17331] x8 : 0000000180000000 x7 : 0000000000000018 x6 : 0000aaab04b92862\n [ 1148.182498][T17331] x5 : 0000aaab04b92862 x4 : 0000000080000000 x3 : 0000000000000068\n [ 1148.190314][T17331] x2 : 000000000000000f x1 : 0000000000007ea8 x0 : 0000000000000001\n [ 1148.198131][T17331] Call trace:\n [ 1148.201259][T17331] eventfs_iterate+0x2c0/0x398\n [ 1148.205864][T17331] iterate_dir+0x98/0x188\n [ 1148.210036][T17331] __arm64_sys_getdents64+0x78/0x160\n [ 1148.215161][T17331] invoke_syscall+0x78/0x108\n [ 1148.219593][T17331] el0_svc_common.constprop.0+0x48/0xf0\n [ 1148.224977][T17331] do_el0_svc+0x24/0x38\n [ 1148.228974][T17331] el0_svc+0x40/0x168\n [ 1148.232798][T17\n---truncated---", "affected": [ { "package": { "ecosystem": "Raspberry Pi OS:12", "name": "linux" }, "versions": [ "1:6.6.20-1+rpt1", "1:6.6.28-1+rpt1", "1:6.6.31-1+rpt1", "1:6.6.47-1+rpt1" ], "ecosystem_specific": { "binaries": [ { "binary_name": "linux-image-6.6.20+rpt-rpi-2712", "binary_version": "1:6.6.20-1+rpt1" }, { "binary_name": "linux-image-6.6.20+rpt-rpi-v6", "binary_version": "1:6.6.20-1+rpt1" }, { "binary_name": "linux-image-6.6.20+rpt-rpi-v7", "binary_version": "1:6.6.20-1+rpt1" }, { "binary_name": "linux-image-6.6.20+rpt-rpi-v7l", "binary_version": "1:6.6.20-1+rpt1" }, { "binary_name": "linux-image-6.6.20+rpt-rpi-v8", "binary_version": "1:6.6.20-1+rpt1" }, { "binary_name": "linux-image-6.6.28+rpt-rpi-2712", "binary_version": "1:6.6.28-1+rpt1" }, { "binary_name": "linux-image-6.6.28+rpt-rpi-v6", "binary_version": "1:6.6.28-1+rpt1" }, { "binary_name": "linux-image-6.6.28+rpt-rpi-v7", "binary_version": "1:6.6.28-1+rpt1" }, { "binary_name": "linux-image-6.6.28+rpt-rpi-v7l", "binary_version": "1:6.6.28-1+rpt1" }, { "binary_name": "linux-image-6.6.28+rpt-rpi-v8", "binary_version": "1:6.6.28-1+rpt1" }, { "binary_name": "linux-image-6.6.31+rpt-rpi-2712", "binary_version": "1:6.6.31-1+rpt1" }, { "binary_name": "linux-image-6.6.31+rpt-rpi-v6", "binary_version": "1:6.6.31-1+rpt1" }, { "binary_name": "linux-image-6.6.31+rpt-rpi-v7", "binary_version": "1:6.6.31-1+rpt1" }, { "binary_name": "linux-image-6.6.31+rpt-rpi-v7l", "binary_version": "1:6.6.31-1+rpt1" }, { "binary_name": "linux-image-6.6.31+rpt-rpi-v8", "binary_version": "1:6.6.31-1+rpt1" }, { "binary_name": "linux-image-6.6.47+rpt-rpi-2712", "binary_version": "1:6.6.47-1+rpt1" }, { "binary_name": "linux-image-6.6.47+rpt-rpi-v6", "binary_version": "1:6.6.47-1+rpt1" }, { "binary_name": "linux-image-6.6.47+rpt-rpi-v7", "binary_version": "1:6.6.47-1+rpt1" }, { "binary_name": "linux-image-6.6.47+rpt-rpi-v7l", "binary_version": "1:6.6.47-1+rpt1" }, { "binary_name": "linux-image-6.6.47+rpt-rpi-v8", "binary_version": "1:6.6.47-1+rpt1" } ] }, "database_specific": { "per_version": { "1:6.6.20-1+rpt1": { "linux_commit": "6f16847710cc0502450788b9f12f0a14d3429668", "upstream_version": "6.6.20", "assessment": "commit ancestry (strak rule)", "upstream_fixed": "6.6.51" }, "1:6.6.28-1+rpt1": { "linux_commit": "0c341f47adc3578cd5f817aa20ee2b7f9ae6b23e", "upstream_version": "6.6.28", "assessment": "commit ancestry (strak rule)", "upstream_fixed": "6.6.51" }, "1:6.6.31-1+rpt1": { "linux_commit": "c1432b4bae5b6582f4d32ba381459f33c34d1424", "upstream_version": "6.6.31", "assessment": "commit ancestry (strak rule)", "upstream_fixed": "6.6.51" }, "1:6.6.47-1+rpt1": { "linux_commit": "cf64a1dfecc2dc418efdd61701c1a4b185ab4761", "upstream_version": "6.6.47", "assessment": "commit ancestry (strak rule)", "upstream_fixed": "6.6.51" } } } } ], "references": [ { "type": "ADVISORY", "url": "https://www.cve.org/CVERecord?id=CVE-2024-46785" }, { "type": "FIX", "url": "https://git.kernel.org/stable/c/05e08297c3c298d8ec28e5a5adb55840312dd87e" }, { "type": "FIX", "url": "https://git.kernel.org/stable/c/f579d17a86448779f9642ad8baca6e3036a8e2d6" }, { "type": "FIX", "url": "https://git.kernel.org/stable/c/d2603279c7d645bf0d11fa253b23f1ab48fc8d3c" } ], "database_specific": { "source": "https://git.kernel.org/pub/scm/linux/security/vulns.git", "upstream_modified": "2026-05-24T06:48:58Z" } }