--- id: CVE-2024-39487 title: |- In the Linux kernel, the following vulnerability has been resolved: bonding: Fix out-of-bounds read in bond_option_arp_ip_targets_set() In function bond_option_arp_ip_targets_set(), if newval->string is an empty string, newval->string+… summary: |- In the Linux kernel, the following vulnerability has been resolved: bonding: Fix out-of-bounds read in bond_option_arp_ip_targets_set() In function bond_option_arp_ip_targets_set(), if newval->string is an empty string, newval->string+… severity: high cvss: 7.1 cvssVector: 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H' cwe: - CWE-125 vendor: linux product: linux_kernel affected: - 'linux_kernel >= 3.13, < 4.19.318' - 'linux_kernel >= 4.20, < 5.4.280' - 'linux_kernel >= 5.5, < 5.10.222' - 'linux_kernel >= 5.11, < 5.15.163' - 'linux_kernel >= 5.16, < 6.1.98' - 'linux_kernel >= 6.2, < 6.6.39' - 'linux_kernel >= 6.7, < 6.9.9' - linux_kernel = 6.10 patched: - linux_kernel 6.9.9 published: '2024-07-09' updated: '2026-10-15' sourceUpdated: '2026-10-15T01:18:34.027' source: NVD sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2024-39487' references: - url: 'https://git.kernel.org/stable/c/6a8a4fd082c439e19fede027e80c79bc4c84bb8e' label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67 - url: 'https://git.kernel.org/stable/c/6b21346b399fd1336fe59233a17eb5ce73041ee1' label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67 - url: 'https://git.kernel.org/stable/c/707c85ba3527ad6aa25552033576b0f1ff835d7b' label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67 - url: 'https://git.kernel.org/stable/c/9f835e48bd4c75fdf6a9cff3f0b806a7abde78da' label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67 - url: 'https://git.kernel.org/stable/c/b75e33eae8667084bd4a63e67657c6a5a0f8d1e8' label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67 - url: 'https://git.kernel.org/stable/c/bfd14e5915c2669f292a31d028e75dcd82f1e7e9' label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67 - url: 'https://git.kernel.org/stable/c/c8eb8ab9a44ff0e73492d0a12a643c449f641a9f' label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67 - url: 'https://git.kernel.org/stable/c/e271ff53807e8f2c628758290f0e499dbe51cb3d' label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67 - url: 'https://git.kernel.org/stable/c/6a8a4fd082c439e19fede027e80c79bc4c84bb8e' label: af854a3a-2127-422b-91ae-364da2661108 - url: 'https://git.kernel.org/stable/c/6b21346b399fd1336fe59233a17eb5ce73041ee1' label: af854a3a-2127-422b-91ae-364da2661108 - url: 'https://git.kernel.org/stable/c/707c85ba3527ad6aa25552033576b0f1ff835d7b' label: af854a3a-2127-422b-91ae-364da2661108 - url: 'https://git.kernel.org/stable/c/9f835e48bd4c75fdf6a9cff3f0b806a7abde78da' label: af854a3a-2127-422b-91ae-364da2661108 - url: 'https://git.kernel.org/stable/c/b75e33eae8667084bd4a63e67657c6a5a0f8d1e8' label: af854a3a-2127-422b-91ae-364da2661108 - url: 'https://git.kernel.org/stable/c/bfd14e5915c2669f292a31d028e75dcd82f1e7e9' label: af854a3a-2127-422b-91ae-364da2661108 - url: 'https://git.kernel.org/stable/c/c8eb8ab9a44ff0e73492d0a12a643c449f641a9f' label: af854a3a-2127-422b-91ae-364da2661108 - url: 'https://git.kernel.org/stable/c/e271ff53807e8f2c628758290f0e499dbe51cb3d' label: af854a3a-2127-422b-91ae-364da2661108 - url: 'https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html' label: af854a3a-2127-422b-91ae-364da2661108 - url: 'https://cert-portal.siemens.com/productcert/html/ssa-355557.html' label: 0b142b55-0307-4c5a-b3c9-f314f3fb7c5e - url: 'https://cert-portal.siemens.com/productcert/html/ssa-398330.html' label: 0b142b55-0307-4c5a-b3c9-f314f3fb7c5e - url: 'https://cert-portal.siemens.com/productcert/html/ssa-613116.html' label: 0b142b55-0307-4c5a-b3c9-f314f3fb7c5e tags: - nvd - cve.org epss: 0.00249 epssPercentile: 0.15278 ingestedAt: '2026-10-15T03:30:12.717Z' ssvc: exploitation: none automatable: 'no' technicalImpact: partial timestamp: '2024-07-23T14:04:37.191643Z' --- ## Overview In the Linux kernel, the following vulnerability has been resolved: bonding: Fix out-of-bounds read in bond_option_arp_ip_targets_set() In function bond_option_arp_ip_targets_set(), if newval->string is an empty string, newval->string+1 will point to the byte after the string, causing an out-of-bound read. BUG: KASAN: slab-out-of-bounds in strlen+0x7d/0xa0 lib/string.c:418 Read of size 1 at addr ffff8881119c4781 by task syz-executor665/8107 CPU: 1 PID: 8107 Comm: syz-executor665 Not tainted 6.7.0-rc7 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.15.0-1 04/01/2014 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0xd9/0x150 lib/dump_stack.c:106 print_address_description mm/kasan/report.c:364 [inline] 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 [inline] in4_pton+0xa3/0x3f0 net/core/utils.c:130 bond_option_arp_ip_targets_set+0xc2/0x910 drivers/net/bonding/bond_options.c:1201 __bond_opt_set+0x2a4/0x1030 drivers/net/bonding/bond_options.c:767 __bond_opt_set_notify+0x48/0x150 drivers/net/bonding/bond_options.c:792 bond_opt_tryset_rtnl+0xda/0x160 drivers/net/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 [inline] new_sync_write fs/read_write.c:491 [inline] 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 [inline] do_syscall_64+0x40/0x110 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x63/0x6b ---[ end trace ]--- Fix it by adding a check of string length before using it. ## Affected - `linux_kernel >= 3.13, < 4.19.318` - `linux_kernel >= 4.20, < 5.4.280` - `linux_kernel >= 5.5, < 5.10.222` - `linux_kernel >= 5.11, < 5.15.163` - `linux_kernel >= 5.16, < 6.1.98` - `linux_kernel >= 6.2, < 6.6.39` - `linux_kernel >= 6.7, < 6.9.9` - `linux_kernel = 6.10` ## Remediation Upgrade past the affected range: - `linux_kernel 6.9.9`