cve-2024-39487
Vulnerability from cvelistv5
Published
2024-07-09 09:52
Modified
2024-08-02 04:26
Severity
Summary
bonding: Fix out-of-bounds read in bond_option_arp_ip_targets_set()
Impacted products
VendorProduct
LinuxLinux
LinuxLinux
Show details on NVD website


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    "assignerShortName": "Linux",
    "cveId": "CVE-2024-39487",
    "datePublished": "2024-07-09T09:52:07.664Z",
    "dateReserved": "2024-06-25T14:23:23.747Z",
    "dateUpdated": "2024-08-02T04:26:15.432Z",
    "state": "PUBLISHED"
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    "nvd": "{\"cve\":{\"id\":\"CVE-2024-39487\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2024-07-09T10:15:04.597\",\"lastModified\":\"2024-08-21T17:18:01.117\",\"vulnStatus\":\"Analyzed\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nbonding: Fix out-of-bounds read in bond_option_arp_ip_targets_set()\\n\\nIn function bond_option_arp_ip_targets_set(), if newval-\u003estring is an\\nempty string, newval-\u003estring+1 will point to the byte after the\\nstring, causing an out-of-bound read.\\n\\nBUG: KASAN: slab-out-of-bounds in strlen+0x7d/0xa0 lib/string.c:418\\nRead of size 1 at addr ffff8881119c4781 by task syz-executor665/8107\\nCPU: 1 PID: 8107 Comm: syz-executor665 Not tainted 6.7.0-rc7 #1\\nHardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.15.0-1 04/01/2014\\nCall Trace:\\n \u003cTASK\u003e\\n __dump_stack lib/dump_stack.c:88 [inline]\\n dump_stack_lvl+0xd9/0x150 lib/dump_stack.c:106\\n print_address_description mm/kasan/report.c:364 [inline]\\n print_report+0xc1/0x5e0 mm/kasan/report.c:475\\n kasan_report+0xbe/0xf0 mm/kasan/report.c:588\\n strlen+0x7d/0xa0 lib/string.c:418\\n __fortify_strlen include/linux/fortify-string.h:210 [inline]\\n in4_pton+0xa3/0x3f0 net/core/utils.c:130\\n bond_option_arp_ip_targets_set+0xc2/0x910\\ndrivers/net/bonding/bond_options.c:1201\\n __bond_opt_set+0x2a4/0x1030 drivers/net/bonding/bond_options.c:767\\n __bond_opt_set_notify+0x48/0x150 drivers/net/bonding/bond_options.c:792\\n bond_opt_tryset_rtnl+0xda/0x160 drivers/net/bonding/bond_options.c:817\\n bonding_sysfs_store_option+0xa1/0x120 drivers/net/bonding/bond_sysfs.c:156\\n dev_attr_store+0x54/0x80 drivers/base/core.c:2366\\n sysfs_kf_write+0x114/0x170 fs/sysfs/file.c:136\\n kernfs_fop_write_iter+0x337/0x500 fs/kernfs/file.c:334\\n call_write_iter include/linux/fs.h:2020 [inline]\\n new_sync_write fs/read_write.c:491 [inline]\\n vfs_write+0x96a/0xd80 fs/read_write.c:584\\n ksys_write+0x122/0x250 fs/read_write.c:637\\n do_syscall_x64 arch/x86/entry/common.c:52 [inline]\\n do_syscall_64+0x40/0x110 arch/x86/entry/common.c:83\\n entry_SYSCALL_64_after_hwframe+0x63/0x6b\\n---[ end trace ]---\\n\\nFix it by adding a check of string length before using it.\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: bonding: corrige la lectura fuera de los l\u00edmites en bond_option_arp_ip_targets_set() En la funci\u00f3n bond_option_arp_ip_targets_set(), si newval-\u0026gt;string es una cadena vac\u00eda, newval-\u0026gt;string+1 apuntar\u00e1 a el byte despu\u00e9s de la cadena, lo que provoca una lectura fuera de los l\u00edmites. ERROR: KASAN: slab-out-of-bounds en strlen+0x7d/0xa0 lib/string.c:418 Lectura del tama\u00f1o 1 en la direcci\u00f3n ffff8881119c4781 por tarea syz-executor665/8107 CPU: 1 PID: 8107 Comm: syz-executor665 No tainted 6.7.0-rc7 #1 Nombre del hardware: PC est\u00e1ndar QEMU (i440FX + PIIX, 1996), BIOS 1.15.0-1 01/04/2014 Seguimiento de llamadas:  __dump_stack lib/dump_stack.c:88 [en l\u00ednea] dump_stack_lvl+0xd9/0x150 lib/dump_stack.c:106 print_address_description mm/kasan/report.c:364 [en l\u00ednea] print_report+0xc1/0x5e0 mm/kasan/report.c:475 kasan_report+0xbe/0xf0 mm/kasan/report. c:588 strlen+0x7d/0xa0 lib/string.c:418 __fortify_strlen include/linux/fortify-string.h:210 [en l\u00ednea] in4_pton+0xa3/0x3f0 net/core/utils.c:130 bond_option_arp_ip_targets_set+0xc2/0x910 controladores /net/bonding/bond_options.c:1201 __bond_opt_set+0x2a4/0x1030 controladores/net/bonding/bond_options.c: 767 __bond_opt_set_notify+0x48/0x150 Drivers/net/bonding/bond_options.c: 792 bond_pt_tryset neto /bonding/bond_options.c:817 bonding_sysfs_store_option+0xa1/0x120 drivers/net/bonding/bond_sysfs.c:156 dev_attr_store+0x54/0x80 drivers/base/core.c:2366 sysfs_kf_write+0x114/0x170 fs/sysfs/file.c :136 kernfs_fop_write_iter+0x337/0x500 fs/kernfs/file.c:334 call_write_iter include/linux/fs.h:2020 [en l\u00ednea] new_sync_write fs/read_write.c:491 [en l\u00ednea] vfs_write+0x96a/0xd80 fs/read_write.c :584 ksys_write+0x122/0x250 fs/read_write.c:637 do_syscall_x64 arch/x86/entry/common.c:52 [en l\u00ednea] do_syscall_64+0x40/0x110 arch/x86/entry/common.c:83 Entry_SYSCALL_64_after_hwframe+0x63/0x6 ---[rastreo final]--- Solucionelo agregando una verificaci\u00f3n de la longitud de la cadena antes de 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  }
}


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