7.8

CVE-2023-53194

In the Linux kernel, the following vulnerability has been resolved:

fs/ntfs3: Add length check in indx_get_root

This adds a length check to guarantee the retrieved index root is legit.

[  162.459513] BUG: KASAN: use-after-free in hdr_find_e.isra.0+0x10c/0x320
[  162.460176] Read of size 2 at addr ffff8880037bca99 by task mount/243
[  162.460851]
[  162.461252] CPU: 0 PID: 243 Comm: mount Not tainted 6.0.0-rc7 #42
[  162.461744] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014
[  162.462609] Call Trace:
[  162.462954]  <TASK>
[  162.463276]  dump_stack_lvl+0x49/0x63
[  162.463822]  print_report.cold+0xf5/0x689
[  162.464608]  ? unwind_get_return_address+0x3a/0x60
[  162.465766]  ? hdr_find_e.isra.0+0x10c/0x320
[  162.466975]  kasan_report+0xa7/0x130
[  162.467506]  ? _raw_spin_lock_irq+0xc0/0xf0
[  162.467998]  ? hdr_find_e.isra.0+0x10c/0x320
[  162.468536]  __asan_load2+0x68/0x90
[  162.468923]  hdr_find_e.isra.0+0x10c/0x320
[  162.469282]  ? cmp_uints+0xe0/0xe0
[  162.469557]  ? cmp_sdh+0x90/0x90
[  162.469864]  ? ni_find_attr+0x214/0x300
[  162.470217]  ? ni_load_mi+0x80/0x80
[  162.470479]  ? entry_SYSCALL_64_after_hwframe+0x63/0xcd
[  162.470931]  ? ntfs_bread_run+0x190/0x190
[  162.471307]  ? indx_get_root+0xe4/0x190
[  162.471556]  ? indx_get_root+0x140/0x190
[  162.471833]  ? indx_init+0x1e0/0x1e0
[  162.472069]  ? fnd_clear+0x115/0x140
[  162.472363]  ? _raw_spin_lock_irqsave+0x100/0x100
[  162.472731]  indx_find+0x184/0x470
[  162.473461]  ? sysvec_apic_timer_interrupt+0x57/0xc0
[  162.474429]  ? indx_find_buffer+0x2d0/0x2d0
[  162.474704]  ? do_syscall_64+0x3b/0x90
[  162.474962]  dir_search_u+0x196/0x2f0
[  162.475381]  ? ntfs_nls_to_utf16+0x450/0x450
[  162.475661]  ? ntfs_security_init+0x3d6/0x440
[  162.475906]  ? is_sd_valid+0x180/0x180
[  162.476191]  ntfs_extend_init+0x13f/0x2c0
[  162.476496]  ? ntfs_fix_post_read+0x130/0x130
[  162.476861]  ? iput.part.0+0x286/0x320
[  162.477325]  ntfs_fill_super+0x11e0/0x1b50
[  162.477709]  ? put_ntfs+0x1d0/0x1d0
[  162.477970]  ? vsprintf+0x20/0x20
[  162.478258]  ? set_blocksize+0x95/0x150
[  162.478538]  get_tree_bdev+0x232/0x370
[  162.478789]  ? put_ntfs+0x1d0/0x1d0
[  162.479038]  ntfs_fs_get_tree+0x15/0x20
[  162.479374]  vfs_get_tree+0x4c/0x130
[  162.479729]  path_mount+0x654/0xfe0
[  162.480124]  ? putname+0x80/0xa0
[  162.480484]  ? finish_automount+0x2e0/0x2e0
[  162.480894]  ? putname+0x80/0xa0
[  162.481467]  ? kmem_cache_free+0x1c4/0x440
[  162.482280]  ? putname+0x80/0xa0
[  162.482714]  do_mount+0xd6/0xf0
[  162.483264]  ? path_mount+0xfe0/0xfe0
[  162.484782]  ? __kasan_check_write+0x14/0x20
[  162.485593]  __x64_sys_mount+0xca/0x110
[  162.486024]  do_syscall_64+0x3b/0x90
[  162.486543]  entry_SYSCALL_64_after_hwframe+0x63/0xcd
[  162.487141] RIP: 0033:0x7f9d374e948a
[  162.488324] 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
[  162.489728] RSP: 002b:00007ffe30e73d18 EFLAGS: 00000206 ORIG_RAX: 00000000000000a5
[  162.490971] RAX: ffffffffffffffda RBX: 0000561cdb43a060 RCX: 00007f9d374e948a
[  162.491669] RDX: 0000561cdb43a260 RSI: 0000561cdb43a2e0 RDI: 0000561cdb442af0
[  162.492050] RBP: 0000000000000000 R08: 0000561cdb43a280 R09: 0000000000000020
[  162.492459] R10: 00000000c0ed0000 R11: 0000000000000206 R12: 0000561cdb442af0
[  162.493183] R13: 0000561cdb43a260 R14: 0000000000000000 R15: 00000000ffffffff
[  162.493644]  </TASK>
[  162.493908]
[  162.494214] The buggy address belongs to the physical page:
[  162.494761] page:000000003e38a3d5 refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x37bc
[  162.496064] flags: 0xfffffc0000000(node=0|zone=1|lastcpupid=0x1fffff)
[  162.497278] raw: 000fffffc0000000 ffffea00000df1c8 ffffea00000df008 0000000000000000
[  162.498928] raw: 0000000000000000 0000000000240000 00000000ffffffff 0000000000000000
[  162.500542] page dumped becau
---truncated---
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Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Linux ≫ Linux Kernel Version >= 5.15 < 5.15.113
Linux ≫ Linux Kernel Version >= 5.16 < 6.1.81
Linux ≫ Linux Kernel Version >= 6.2 < 6.3.4
Zu dieser CVE wurde keine CISA KEV oder CERT.AT-Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.02% 0.036
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
nvd@nist.gov 7.8 1.8 5.9
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CWE-416 Use After Free

The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.