CVE - CVE-2022-49395

CVE-ID
CVE-2022-49395	Learn more at National Vulnerability Database (NVD) • CVSS Severity Rating • Fix Information • Vulnerable Software Versions • SCAP Mappings • CPE Information
Description
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' ==================================================================
References
Note: References are provided for the convenience of the reader to help distinguish between vulnerabilities. The list is not intended to be complete.
MISC:https://git.kernel.org/stable/c/10995a382271254bd276627ec74136da4a23c4a6 URL:https://git.kernel.org/stable/c/10995a382271254bd276627ec74136da4a23c4a6 MISC:https://git.kernel.org/stable/c/24ca648bf5f72ed8878cf09b5d4431935779681e URL:https://git.kernel.org/stable/c/24ca648bf5f72ed8878cf09b5d4431935779681e MISC:https://git.kernel.org/stable/c/2a4a62a14be1947fa945c5c11ebf67326381a568 URL:https://git.kernel.org/stable/c/2a4a62a14be1947fa945c5c11ebf67326381a568 MISC:https://git.kernel.org/stable/c/3549ab4b962cf619e8c55484a0d870a34b3f845f URL:https://git.kernel.org/stable/c/3549ab4b962cf619e8c55484a0d870a34b3f845f MISC:https://git.kernel.org/stable/c/668ca34a428d6ffc0f99a1a6a9b661a288d4183b URL:https://git.kernel.org/stable/c/668ca34a428d6ffc0f99a1a6a9b661a288d4183b MISC:https://git.kernel.org/stable/c/91e5ba2af2d729d5126aefd5aa3eadc69b8426e5 URL:https://git.kernel.org/stable/c/91e5ba2af2d729d5126aefd5aa3eadc69b8426e5 MISC:https://git.kernel.org/stable/c/9caad70819aef3431abaf73ba5163b55b161aba0 URL:https://git.kernel.org/stable/c/9caad70819aef3431abaf73ba5163b55b161aba0 MISC:https://git.kernel.org/stable/c/cf0dabc37446c5ee538ae7b4c467ab0e53fa5463 URL:https://git.kernel.org/stable/c/cf0dabc37446c5ee538ae7b4c467ab0e53fa5463 MISC:https://git.kernel.org/stable/c/ef1dc929a1e5fa1b2d842256db9fb8710d3be910 URL:https://git.kernel.org/stable/c/ef1dc929a1e5fa1b2d842256db9fb8710d3be910
Assigning CNA
kernel.org
Date Record Created
20250226	Disclaimer: The record creation date may reflect when the CVE ID was allocated or reserved, and does not necessarily indicate when this vulnerability was discovered, shared with the affected vendor, publicly disclosed, or updated in CVE.
Phase (Legacy)
Assigned (20250226)
Votes (Legacy)

Comments (Legacy)

Proposed (Legacy)
N/A
This is an record on the CVE List, which provides common identifiers for publicly known cybersecurity vulnerabilities.
Search CVE Using Keywords: You can also search by reference using the CVE Reference Maps.
For More Information: CVE Request Web Form (select "Other" from dropdown)