CVE-2022-49062

{"id": "CVE-2022-49062", "cveTags": [], "metrics": {"cvssMetricV31": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 7.8, "attackVector": "LOCAL", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "HIGH"}, "impactScore": 5.9, "exploitabilityScore": 1.8}]}, "published": "2025-02-26T07:00:43.450", "references": [{"url": "https://git.kernel.org/stable/c/09a5df1b88c8f126c8ff9938edf160edd4e92f42", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/7b2f6c306601240635c72caa61f682e74d4591b2", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "CWE-787"}]}], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ncachefiles: Fix KASAN slab-out-of-bounds in cachefiles_set_volume_xattr\n\nUse the actual length of volume coherency data when setting the\nxattr to avoid the following KASAN report.\n\n BUG: KASAN: slab-out-of-bounds in cachefiles_set_volume_xattr+0xa0/0x350 [cachefiles]\n Write of size 4 at addr ffff888101e02af4 by task kworker/6:0/1347\n\n CPU: 6 PID: 1347 Comm: kworker/6:0 Kdump: loaded Not tainted 5.18.0-rc1-nfs-fscache-netfs+ #13\n Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.14.0-4.fc34 04/01/2014\n Workqueue: events fscache_create_volume_work [fscache]\n Call Trace:\n <TASK>\n dump_stack_lvl+0x45/0x5a\n print_report.cold+0x5e/0x5db\n ? __lock_text_start+0x8/0x8\n ? cachefiles_set_volume_xattr+0xa0/0x350 [cachefiles]\n kasan_report+0xab/0x120\n ? cachefiles_set_volume_xattr+0xa0/0x350 [cachefiles]\n kasan_check_range+0xf5/0x1d0\n memcpy+0x39/0x60\n cachefiles_set_volume_xattr+0xa0/0x350 [cachefiles]\n cachefiles_acquire_volume+0x2be/0x500 [cachefiles]\n ? __cachefiles_free_volume+0x90/0x90 [cachefiles]\n fscache_create_volume_work+0x68/0x160 [fscache]\n process_one_work+0x3b7/0x6a0\n worker_thread+0x2c4/0x650\n ? process_one_work+0x6a0/0x6a0\n kthread+0x16c/0x1a0\n ? kthread_complete_and_exit+0x20/0x20\n ret_from_fork+0x22/0x30\n </TASK>\n\n Allocated by task 1347:\n kasan_save_stack+0x1e/0x40\n __kasan_kmalloc+0x81/0xa0\n cachefiles_set_volume_xattr+0x76/0x350 [cachefiles]\n cachefiles_acquire_volume+0x2be/0x500 [cachefiles]\n fscache_create_volume_work+0x68/0x160 [fscache]\n process_one_work+0x3b7/0x6a0\n worker_thread+0x2c4/0x650\n kthread+0x16c/0x1a0\n ret_from_fork+0x22/0x30\n\n The buggy address belongs to the object at ffff888101e02af0\n which belongs to the cache kmalloc-8 of size 8\n The buggy address is located 4 bytes inside of\n 8-byte region [ffff888101e02af0, ffff888101e02af8)\n\n The buggy address belongs to the physical page:\n page:00000000a2292d70 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x101e02\n flags: 0x17ffffc0000200(slab|node=0|zone=2|lastcpupid=0x1fffff)\n raw: 0017ffffc0000200 0000000000000000 dead000000000001 ffff888100042280\n raw: 0000000000000000 0000000080660066 00000001ffffffff 0000000000000000\n page dumped because: kasan: bad access detected\n\n Memory state around the buggy address:\n ffff888101e02980: fc 00 fc fc fc fc 00 fc fc fc fc 00 fc fc fc fc\n ffff888101e02a00: 00 fc fc fc fc 00 fc fc fc fc 00 fc fc fc fc 00\n >ffff888101e02a80: fc fc fc fc 00 fc fc fc fc 00 fc fc fc fc 04 fc\n ^\n ffff888101e02b00: fc fc fc 00 fc fc fc fc 00 fc fc fc fc 00 fc fc\n ffff888101e02b80: fc fc 00 fc fc fc fc 00 fc fc fc fc 00 fc fc fc\n =================================================================="}, {"lang": "es", "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: cachefiles: corrige el error KASAN slab-out-of-bounds en cachefiles_set_volume_xattr. Usa la longitud real de los datos de coherencia del volumen al configurar xattr para evitar el siguiente informe KASAN. ERROR: KASAN: slab-out-of-bounds en cachefiles_set_volume_xattr+0xa0/0x350 [cachefiles] Escritura de tama\u00f1o 4 en la direcci\u00f3n ffff888101e02af4 por la tarea kworker/6:0/1347 CPU: 6 PID: 1347 Comm: kworker/6:0 Kdump: cargado No contaminado 5.18.0-rc1-nfs-fscache-netfs+ #13 Nombre del hardware: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.14.0-4.fc34 04/01/2014 Cola de trabajo: eventos fscache_create_volume_work [fscache] Seguimiento de llamadas: dump_stack_lvl+0x45/0x5a print_report.cold+0x5e/0x5db ? __lock_text_start+0x8/0x8 ? cachefiles_set_volume_xattr+0xa0/0x350 [cachefiles] kasan_report+0xab/0x120 ? cachefiles_set_volume_xattr+0xa0/0x350 [cachefiles] kasan_check_range+0xf5/0x1d0 memcpy+0x39/0x60 cachefiles_set_volume_xattr+0xa0/0x350 [cachefiles] cachefiles_acquire_volume+0x2be/0x500 [cachefiles] ? __cachefiles_free_volume+0x90/0x90 [cachefiles] fscache_create_volume_work+0x68/0x160 [fscache] process_one_work+0x3b7/0x6a0 worker_thread+0x2c4/0x650 ? process_one_work+0x6a0/0x6a0 kthread+0x16c/0x1a0 ? kthread_complete_and_exit+0x20/0x20 ret_from_fork+0x22/0x30 Asignado por la tarea 1347: kasan_save_stack+0x1e/0x40 __kasan_kmalloc+0x81/0xa0 cachefiles_set_volume_xattr+0x76/0x350 [archivos de cach\u00e9] cachefiles_acquire_volume+0x2be/0x500 [archivos de cach\u00e9] fscache_create_volume_work+0x68/0x160 [fscache] process_one_work+0x3b7/0x6a0 worker_thread+0x2c4/0x650 kthread+0x16c/0x1a0 ret_from_fork+0x22/0x30 La direcci\u00f3n con errores pertenece a el objeto en ffff888101e02af0 que pertenece al cach\u00e9 kmalloc-8 de tama\u00f1o 8 La direcci\u00f3n con errores se encuentra 4 bytes dentro de la regi\u00f3n de 8 bytes [ffff888101e02af0, ffff888101e02af8) La direcci\u00f3n con errores pertenece a la p\u00e1gina f\u00edsica: page:00000000a2292d70 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x101e02 flags: 0x17ffffc0000200(slab|node=0|zone=2|lastcpupid=0x1fffff) raw: 0017ffffc0000200 0000000000000000 dead000000000001 ffff888100042280 raw: 0000000000000000 0000000080660066 00000001ffffffff 00000000000000000 p\u00e1gina volcada porque: kasan: se detect\u00f3 mal acceso Estado de la memoria alrededor de la direcci\u00f3n con errores: ffff888101e02980: FC 00 FC FC FC FC 00 FC FC FC FC 00 FC FC FC FC ffff888101e02a00: 00 FC FC FC FC 00 FC FC FC FC 00 FC FC FC FC 00 &gt;ffff888101e02a80: FC FC FC FC 00 FC FC fc fc 00 fc fc fc fc 04 fc ^ ffff888101e02b00: fc fc fc 00 fc fc fc fc 00 fc fc fc fc 00 fc fc ffff888101e02b80: fc fc 00 fc fc fc fc 00 fc fc fc fc 00 fc fc fc ====================================================================="}], "lastModified": "2025-03-18T18:32:22.413", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "62D8CC4C-A7BD-4651-8B8B-B5D5AABB585E", "versionEndExcluding": "5.17.4", "versionStartIncluding": "5.17"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:5.18:rc1:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "6AD94161-84BB-42E6-9882-4FC0C42E9FC1"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:5.18:rc2:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "7AB06DDF-3C2B-416D-B448-E990D8FF67A9"}], "operator": "OR"}]}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}