CVE-2022-49395
CVE.org · Published
- Record status
- Published
- Identifier year (not publication year)
- 2022
- Source publication
- Source updated
- Imported by cveboard
- Source snapshot
- cve_2026-10-24_midnight_baseline ·
CNA source text (English)
um: Fix out-of-bounds read in LDT setup
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' ==================================================================
Scoped product and version facts
Fix information unknown; no fixed version is derived here. Missing information does not prove that no fix exists.
Exploitation unknown; this catalogue does not assess exploitation.
Linux
- Vendor
- Linux
- Product
- Linux
- Platforms
- Unknown
- Default status
unaffected
| Version (version) | Status (status) | Version scheme (versionType) | Exclusive end (lessThan) | Inclusive end (lessThanOrEqual) | Status changes (at → status) |
|---|---|---|---|---|---|
| 858259cf7d1c443c836a2022b78cb281f0a9b95e | affected | git | 668ca34a428d6ffc0f99a1a6a9b661a288d4183b | Unavailable | None listed |
| 858259cf7d1c443c836a2022b78cb281f0a9b95e | affected | git | ef1dc929a1e5fa1b2d842256db9fb8710d3be910 | Unavailable | None listed |
| 858259cf7d1c443c836a2022b78cb281f0a9b95e | affected | git | 3549ab4b962cf619e8c55484a0d870a34b3f845f | Unavailable | None listed |
| 858259cf7d1c443c836a2022b78cb281f0a9b95e | affected | git | 9caad70819aef3431abaf73ba5163b55b161aba0 | Unavailable | None listed |
| 858259cf7d1c443c836a2022b78cb281f0a9b95e | affected | git | cf0dabc37446c5ee538ae7b4c467ab0e53fa5463 | Unavailable | None listed |
| 858259cf7d1c443c836a2022b78cb281f0a9b95e | affected | git | 10995a382271254bd276627ec74136da4a23c4a6 | Unavailable | None listed |
| 858259cf7d1c443c836a2022b78cb281f0a9b95e | affected | git | 24ca648bf5f72ed8878cf09b5d4431935779681e | Unavailable | None listed |
| 858259cf7d1c443c836a2022b78cb281f0a9b95e | affected | git | 91e5ba2af2d729d5126aefd5aa3eadc69b8426e5 | Unavailable | None listed |
| 858259cf7d1c443c836a2022b78cb281f0a9b95e | affected | git | 2a4a62a14be1947fa945c5c11ebf67326381a568 | Unavailable | None listed |
Linux
- Vendor
- Linux
- Product
- Linux
- Platforms
- Unknown
- Default status
affected
| Version (version) | Status (status) | Version scheme (versionType) | Exclusive end (lessThan) | Inclusive end (lessThanOrEqual) | Status changes (at → status) |
|---|---|---|---|---|---|
| 2.6.15 | affected | Unavailable | Unavailable | Unavailable | None listed |
| 0 | unaffected | semver | 2.6.15 | Unavailable | None listed |
| 4.9.318 | unaffected | semver | Unavailable | 4.9.* | None listed |
| 4.14.283 | unaffected | semver | Unavailable | 4.14.* | None listed |
| 4.19.247 | unaffected | semver | Unavailable | 4.19.* | None listed |
| 5.4.198 | unaffected | semver | Unavailable | 5.4.* | None listed |
| 5.10.121 | unaffected | semver | Unavailable | 5.10.* | None listed |
| 5.15.46 | unaffected | semver | Unavailable | 5.15.* | None listed |
| 5.17.14 | unaffected | semver | Unavailable | 5.17.* | None listed |
| 5.18.3 | unaffected | semver | Unavailable | 5.18.* | None listed |
| 5.19 | unaffected | original_commit_for_fix | Unavailable | * | None listed |