CVE-2022-49395
um: Fix out-of-bounds read in LDT setup
En bref
- Source
- NVD
- EPSS
- EPSS 0.29 % · centile 21 ()
- État
- PUBLISHED
- Publiée
- Mise à jour
- Attribuée par
- Linux
- Statut NVD
- Modified
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' ==================================================================
Faiblesses (CWE)
- CWE-125 — Lecture hors limites
Références
- https://git.kernel.org/stable/c/668ca34a428d6ffc0f99a1a6a9b661a288d4183b
- https://git.kernel.org/stable/c/ef1dc929a1e5fa1b2d842256db9fb8710d3be910
- https://git.kernel.org/stable/c/3549ab4b962cf619e8c55484a0d870a34b3f845f
- https://git.kernel.org/stable/c/9caad70819aef3431abaf73ba5163b55b161aba0
- https://git.kernel.org/stable/c/cf0dabc37446c5ee538ae7b4c467ab0e53fa5463
- https://git.kernel.org/stable/c/10995a382271254bd276627ec74136da4a23c4a6
- https://git.kernel.org/stable/c/24ca648bf5f72ed8878cf09b5d4431935779681e
- https://git.kernel.org/stable/c/91e5ba2af2d729d5126aefd5aa3eadc69b8426e5
- https://git.kernel.org/stable/c/2a4a62a14be1947fa945c5c11ebf67326381a568
Scores
| Version | Score | Vecteur | Évalué par |
|---|---|---|---|
| CVSS 3.1 | HIGH 7.1 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H | CISA-ADP |
| CVSS 3.1 | HIGH 7.1 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H | NVD · nvd@nist.gov (Primary) |
| CVSS 3.1 | HIGH 7.1 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H | NVD · 134c704f-9b21-4f2e-91b3-4a467353bcc0 (Secondary) |
Références européennes
- ENISA EUVD · EUVD-2022-54834
- GCVE · GCVE-0-2022-49395
Avis du CERT-FR
- CERTFR-2025-AVI-0669 — Multiples vulnérabilités dans le noyau Linux de Red Hat · cert.ssi.gouv.fr
- CERTFR-2025-AVI-0667 — Multiples vulnérabilités dans Juniper Secure Analytics · cert.ssi.gouv.fr
- CERTFR-2025-AVI-0626 — Multiples vulnérabilités dans le noyau Linux de Red Hat · cert.ssi.gouv.fr
- CERTFR-2025-AVI-0608 — Multiples vulnérabilités dans les produits IBM · cert.ssi.gouv.fr
- CERTFR-2025-AVI-0606 — Multiples vulnérabilités dans le noyau Linux de Red Hat · cert.ssi.gouv.fr
- CERTFR-2025-AVI-0588 — Multiples vulnérabilités dans le noyau Linux de Red Hat · cert.ssi.gouv.fr
- CERTFR-2025-AVI-0561 — Multiples vulnérabilités dans le noyau Linux de Red Hat · cert.ssi.gouv.fr
- CERTFR-2025-AVI-0510 — Multiples vulnérabilités dans le noyau Linux de Red Hat · cert.ssi.gouv.fr
- CERTFR-2025-AVI-0336 — Multiples vulnérabilités dans le noyau Linux de SUSE · cert.ssi.gouv.fr
Configurations affectées (CPE NVD)
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*≥ 2.6.15 < 4.9.318cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*≥ 4.10 < 4.14.283cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*≥ 4.15 < 4.19.247cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*≥ 4.20 < 5.4.198cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*≥ 5.5 < 5.10.121cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*≥ 5.11 < 5.15.46cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*≥ 5.16 < 5.17.14cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*≥ 5.18 < 5.18.3
Produits affectés
| Produit | Versions |
|---|---|
| Linux · Linux | affected 858259cf7d1c443c836a2022b78cb281f0a9b95e < 668ca34a428d6ffc0f99a1a6a9b661a288d4183b ; affected 858259cf7d1c443c836a2022b78cb281f0a9b95e < ef1dc929a1e5fa1b2d842256db9fb8710d3be910 ; affected 858259cf7d1c443c836a2022b78cb281f0a9b95e < 3549ab4b962cf619e8c55484a0d870a34b3f845f ; affected 858259cf7d1c443c836a2022b78cb281f0a9b95e < 9caad70819aef3431abaf73ba5163b55b161aba0 ; affected 858259cf7d1c443c836a2022b78cb281f0a9b95e < cf0dabc37446c5ee538ae7b4c467ab0e53fa5463 ; affected 858259cf7d1c443c836a2022b78cb281f0a9b95e < 10995a382271254bd276627ec74136da4a23c4a6 |
| Linux · Linux | affected 2.6.15 ; unaffected 0 < 2.6.15 ; unaffected 4.9.318 ≤ 4.9.* ; unaffected 4.14.283 ≤ 4.14.* ; unaffected 4.19.247 ≤ 4.19.* ; unaffected 5.4.198 ≤ 5.4.* |
Sources
| Source | Licence |
|---|---|
| CVE List (CVEProject cvelistV5) | CVE Program Terms of Use |
| EPSS (FIRST.org) | FIRST — attribution requested |
| ENISA EUVD | ENISA — reproduction authorised, source acknowledged |
| CERT-FR (ANSSI) | Licence Ouverte / Etalab 2.0 |
| NVD (NIST) via fkie-cad/nvd-json-data-feeds | Public domain — this product uses data from the NVD API but is not endorsed or certified by the NVD |