CVE-2023-53486

Published Oct 1, 2025

Last updated 5 months ago

Overview

Description
In the Linux kernel, the following vulnerability has been resolved: fs/ntfs3: Enhance the attribute size check This combines the overflow and boundary check so that all attribute size will be properly examined while enumerating them. [ 169.181521] BUG: KASAN: slab-out-of-bounds in run_unpack+0x2e3/0x570 [ 169.183161] Read of size 1 at addr ffff8880094b6240 by task mount/247 [ 169.184046] [ 169.184925] CPU: 0 PID: 247 Comm: mount Not tainted 6.0.0-rc7+ #3 [ 169.185908] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014 [ 169.187066] Call Trace: [ 169.187492] <TASK> [ 169.188049] dump_stack_lvl+0x49/0x63 [ 169.188495] print_report.cold+0xf5/0x689 [ 169.188964] ? run_unpack+0x2e3/0x570 [ 169.189331] kasan_report+0xa7/0x130 [ 169.189714] ? run_unpack+0x2e3/0x570 [ 169.190079] __asan_load1+0x51/0x60 [ 169.190634] run_unpack+0x2e3/0x570 [ 169.191290] ? run_pack+0x840/0x840 [ 169.191569] ? run_lookup_entry+0xb3/0x1f0 [ 169.192443] ? mi_enum_attr+0x20a/0x230 [ 169.192886] run_unpack_ex+0xad/0x3e0 [ 169.193276] ? run_unpack+0x570/0x570 [ 169.193557] ? ni_load_mi+0x80/0x80 [ 169.193889] ? debug_smp_processor_id+0x17/0x20 [ 169.194236] ? mi_init+0x4a/0x70 [ 169.194496] attr_load_runs_vcn+0x166/0x1c0 [ 169.194851] ? attr_data_write_resident+0x250/0x250 [ 169.195188] mi_read+0x133/0x2c0 [ 169.195481] ntfs_iget5+0x277/0x1780 [ 169.196017] ? call_rcu+0x1c7/0x330 [ 169.196392] ? ntfs_get_block_bmap+0x70/0x70 [ 169.196708] ? evict+0x223/0x280 [ 169.197014] ? __kmalloc+0x33/0x540 [ 169.197305] ? wnd_init+0x15b/0x1b0 [ 169.197599] ntfs_fill_super+0x1026/0x1ba0 [ 169.197994] ? put_ntfs+0x1d0/0x1d0 [ 169.198299] ? vsprintf+0x20/0x20 [ 169.198583] ? mutex_unlock+0x81/0xd0 [ 169.198930] ? set_blocksize+0x95/0x150 [ 169.199269] get_tree_bdev+0x232/0x370 [ 169.199750] ? put_ntfs+0x1d0/0x1d0 [ 169.200094] ntfs_fs_get_tree+0x15/0x20 [ 169.200431] vfs_get_tree+0x4c/0x130 [ 169.200714] path_mount+0x654/0xfe0 [ 169.201067] ? putname+0x80/0xa0 [ 169.201358] ? finish_automount+0x2e0/0x2e0 [ 169.201965] ? putname+0x80/0xa0 [ 169.202445] ? kmem_cache_free+0x1c4/0x440 [ 169.203075] ? putname+0x80/0xa0 [ 169.203414] do_mount+0xd6/0xf0 [ 169.203719] ? path_mount+0xfe0/0xfe0 [ 169.203977] ? __kasan_check_write+0x14/0x20 [ 169.204382] __x64_sys_mount+0xca/0x110 [ 169.204711] do_syscall_64+0x3b/0x90 [ 169.205059] entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 169.205571] RIP: 0033:0x7f67a80e948a [ 169.206327] Code: 48 8b 0d 11 fa 2a 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 49 89 ca b8 a5 00 00 008 [ 169.208296] RSP: 002b:00007ffddf020f58 EFLAGS: 00000202 ORIG_RAX: 00000000000000a5 [ 169.209253] RAX: ffffffffffffffda RBX: 000055e2547a6060 RCX: 00007f67a80e948a [ 169.209777] RDX: 000055e2547a6260 RSI: 000055e2547a62e0 RDI: 000055e2547aeaf0 [ 169.210342] RBP: 0000000000000000 R08: 000055e2547a6280 R09: 0000000000000020 [ 169.210843] R10: 00000000c0ed0000 R11: 0000000000000202 R12: 000055e2547aeaf0 [ 169.211307] R13: 000055e2547a6260 R14: 0000000000000000 R15: 00000000ffffffff [ 169.211913] </TASK> [ 169.212304] [ 169.212680] Allocated by task 0: [ 169.212963] (stack is not available) [ 169.213200] [ 169.213472] The buggy address belongs to the object at ffff8880094b5e00 [ 169.213472] which belongs to the cache UDP of size 1152 [ 169.214095] The buggy address is located 1088 bytes inside of [ 169.214095] 1152-byte region [ffff8880094b5e00, ffff8880094b6280) [ 169.214639] [ 169.215004] The buggy address belongs to the physical page: [ 169.215766] page:000000002e324c8c refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x94b4 [ 169.218412] head:000000002e324c8c order:2 compound_mapcount:0 compound_pincount:0 [ 169.219078] flags: 0xfffffc0010200(slab|head|node=0|zone=1|lastcpupid=0x1fffff) [ 169.220272] raw: 000fffffc0010200 ---truncated---
Source
416baaa9-dc9f-4396-8d5f-8c081fb06d67
NVD status
Analyzed
Products
linux_kernel

Risk scores

CVSS 3.1

Type
Primary
Base score
7.1
Impact score
5.2
Exploitability score
1.8
Vector string
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
Severity
HIGH

Weaknesses

nvd@nist.gov
CWE-125

Social media

Hype score
Not currently trending

Configurations

  1. In the Linux kernel, the following vulnerability has been resolved: coresight: tmc-etr: Fix race condition between sysfs and perf mode When trying to run perf and sysfs mode simultaneously, the WARN_ON() in tmc_etr_enable_hw() is triggered sometimes: WARNING: CPU: 42 PID: 3911571 at drivers/hwtracing/coresight/coresight-tmc-etr.c:1060 tmc_etr_enable_hw+0xc0/0xd8 [coresight_tmc] [..snip..] Call trace: tmc_etr_enable_hw+0xc0/0xd8 [coresight_tmc] (P) tmc_enable_etr_sink+0x11c/0x250 [coresight_tmc] (L) tmc_enable_etr_sink+0x11c/0x250 [coresight_tmc] coresight_enable_path+0x1c8/0x218 [coresight] coresight_enable_sysfs+0xa4/0x228 [coresight] enable_source_store+0x58/0xa8 [coresight] dev_attr_store+0x20/0x40 sysfs_kf_write+0x4c/0x68 kernfs_fop_write_iter+0x120/0x1b8 vfs_write+0x2c8/0x388 ksys_write+0x74/0x108 __arm64_sys_write+0x24/0x38 el0_svc_common.constprop.0+0x64/0x148 do_el0_svc+0x24/0x38 el0_svc+0x3c/0x130 el0t_64_sync_handler+0xc8/0xd0 el0t_64_sync+0x1ac/0x1b0 ---[ end trace 0000000000000000 ]--- Since the enablement of sysfs mode is separeted into two critical regions, one for sysfs buffer allocation and another for hardware enablement, it's possible to race with the perf mode. Fix this by double check whether the perf mode's been used before enabling the hardware in sysfs mode. mode: [sysfs mode] [perf mode] tmc_etr_get_sysfs_buffer() spin_lock(&drvdata->spinlock) [sysfs buffer allocation] spin_unlock(&drvdata->spinlock) spin_lock(&drvdata->spinlock) tmc_etr_enable_hw() drvdata->etr_buf = etr_perf->etr_buf spin_unlock(&drvdata->spinlock) spin_lock(&drvdata->spinlock) tmc_etr_enable_hw() WARN_ON(drvdata->etr_buf) // WARN sicne etr_buf initialized at the perf side spin_unlock(&drvdata->spinlock) With this fix, we retain the check for CS_MODE_PERF in get_etr_sysfs_buf. This ensures we verify whether the perf mode's already running before we actually allocate the buffer. Then we can save the time of allocating/freeing the sysfs buffer if race with the perf mode.CVE-2026-46272