cbcvebase.
CVE-2022-49395
published 2025-02-26

CVE-2022-49395: In the Linux kernel, the following vulnerability has been resolved: um: Fix out-of-bounds read in LDT setup syscall_stub_data() expects the data_count…

PriorityP431high7.1CVSS 3.1
AVLACLPRLUINSUCHINAH
EPSS
0.28%
19.9th percentile
In the Linux kernel, the following vulnerability has been resolved: um: Fix out-of-bounds read in LDT setup syscall_stub_data() expects the data_count parameter to be the number of longs, not bytes. BUG: KASAN: stack-out-of-bounds in syscall_stub_data+0x70/0xe0 Read of size 128 at addr 000000006411f6f0 by task swapper/1 CPU: 0 PID: 1 Comm: swapper Not tainted 5.18.0+ #18 Call Trace: show_stack.cold+0x166/0x2a7 __dump_stack+0x3a/0x43 dump_stack_lvl+0x1f/0x27 print_report.cold+0xdb/0xf81 kasan_report+0x119/0x1f0 kasan_check_range+0x3a3/0x440 memcpy+0x52/0x140 syscall_stub_data+0x70/0xe0 write_ldt_entry+0xac/0x190 init_new_ldt+0x515/0x960 init_new_context+0x2c4/0x4d0 mm_init.constprop.0+0x5ed/0x760 mm_alloc+0x118/0x170 0x60033f48 do_one_initcall+0x1d7/0x860 0x60003e7b kernel_init+0x6e/0x3d4 new_thread_handler+0x1e7/0x2c0 The buggy address belongs to stack of task swapper/1 and is located at offset 64 in frame: init_new_ldt+0x0/0x960 This frame has 2 objects: [32, 40) 'addr' [64, 80) 'desc'

Affected

23 ranges
VendorProductVersion rangeFixed in
debianlinux< linux 5.18.5-1 (bookworm)linux 5.18.5-1 (bookworm)
linuxlinux——
linuxlinux>= 858259cf7d1c443c836a2022b78cb281f0a9b95e < 668ca34a428d6ffc0f99a1a6a9b661a288d4183b668ca34a428d6ffc0f99a1a6a9b661a288d4183b
linuxlinux>= 858259cf7d1c443c836a2022b78cb281f0a9b95e < ef1dc929a1e5fa1b2d842256db9fb8710d3be910ef1dc929a1e5fa1b2d842256db9fb8710d3be910
linuxlinux>= 858259cf7d1c443c836a2022b78cb281f0a9b95e < 3549ab4b962cf619e8c55484a0d870a34b3f845f3549ab4b962cf619e8c55484a0d870a34b3f845f
linuxlinux>= 858259cf7d1c443c836a2022b78cb281f0a9b95e < 9caad70819aef3431abaf73ba5163b55b161aba09caad70819aef3431abaf73ba5163b55b161aba0
linuxlinux>= 858259cf7d1c443c836a2022b78cb281f0a9b95e < cf0dabc37446c5ee538ae7b4c467ab0e53fa5463cf0dabc37446c5ee538ae7b4c467ab0e53fa5463
linuxlinux>= 858259cf7d1c443c836a2022b78cb281f0a9b95e < 10995a382271254bd276627ec74136da4a23c4a610995a382271254bd276627ec74136da4a23c4a6
linuxlinux>= 858259cf7d1c443c836a2022b78cb281f0a9b95e < 24ca648bf5f72ed8878cf09b5d4431935779681e24ca648bf5f72ed8878cf09b5d4431935779681e
linuxlinux>= 858259cf7d1c443c836a2022b78cb281f0a9b95e < 91e5ba2af2d729d5126aefd5aa3eadc69b8426e591e5ba2af2d729d5126aefd5aa3eadc69b8426e5
linuxlinux>= 858259cf7d1c443c836a2022b78cb281f0a9b95e < 2a4a62a14be1947fa945c5c11ebf67326381a5682a4a62a14be1947fa945c5c11ebf67326381a568
linuxlinux_kernel>= 0 < 5.10.127-15.10.127-1
linuxlinux_kernel>= 0 < 5.18.5-15.18.5-1
linuxlinux_kernel>= 0 < 5.18.5-15.18.5-1
linuxlinux_kernel>= 0 < 5.18.5-15.18.5-1
linuxlinux_kernel>= 2.6.15 < 4.9.3184.9.318
linuxlinux_kernel>= 4.10 < 4.14.2834.14.283
linuxlinux_kernel>= 4.15 < 4.19.2474.19.247
linuxlinux_kernel>= 4.20 < 5.4.1985.4.198
linuxlinux_kernel>= 5.11 < 5.15.465.15.46
linuxlinux_kernel>= 5.16 < 5.17.145.17.14
linuxlinux_kernel>= 5.18 < 5.18.35.18.3
linuxlinux_kernel>= 5.5 < 5.10.1215.10.121

CVSS provenance

nvdv3.17.1HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
osv7.1HIGH
vendor_debian7.1HIGH
vendor_redhat7.1HIGH
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