CVE-2024-39487

CVE Details

Release Date:

2024-07-09

Description

In the Linux kernel, the following vulnerability has been resolved:\nbonding: Fix out-of-bounds read in bond_option_arp_ip_targets_set()\nIn function bond_option_arp_ip_targets_set(), if newval->string is an\nempty string, newval->string+1 will point to the byte after the\nstring, causing an out-of-bound read.\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\n__dump_stack lib/dump_stack.c:88 [inline]\ndump_stack_lvl+0xd9/0x150 lib/dump_stack.c:106\nprint_address_description mm/kasan/report.c:364 [inline]\nprint_report+0xc1/0x5e0 mm/kasan/report.c:475\nkasan_report+0xbe/0xf0 mm/kasan/report.c:588\nstrlen+0x7d/0xa0 lib/string.c:418\n__fortify_strlen include/linux/fortify-string.h:210 [inline]\nin4_pton+0xa3/0x3f0 net/core/utils.c:130\nbond_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\nbond_opt_tryset_rtnl+0xda/0x160 drivers/net/bonding/bond_options.c:817\nbonding_sysfs_store_option+0xa1/0x120 drivers/net/bonding/bond_sysfs.c:156\ndev_attr_store+0x54/0x80 drivers/base/core.c:2366\nsysfs_kf_write+0x114/0x170 fs/sysfs/file.c:136\nkernfs_fop_write_iter+0x337/0x500 fs/kernfs/file.c:334\ncall_write_iter include/linux/fs.h:2020 [inline]\nnew_sync_write fs/read_write.c:491 [inline]\nvfs_write+0x96a/0xd80 fs/read_write.c:584\nksys_write+0x122/0x250 fs/read_write.c:637\ndo_syscall_x64 arch/x86/entry/common.c:52 [inline]\ndo_syscall_64+0x40/0x110 arch/x86/entry/common.c:83\nentry_SYSCALL_64_after_hwframe+0x63/0x6b\n---[ end trace ]---\nFix it by adding a check of string length before using it.

See more information about CVE-2024-39487 from MITRE CVE dictionary and NIST NVD

CVSS Scoring

NOTE: The following CVSS v3.1 metrics and score provided are preliminary and subject to review.

Base Score:	5.5	CVSS Vector:	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Attack Vector:	Local network	Attack Complexity:	Low
Privileges Required:	Low	User Interaction:	None
Scope:	Unchanged	Confidentiality Impact:	None
Integrity Impact:	None	Availability Impact:	High

Errata information

Platform	Errata	Release Date
Oracle Linux version 7 (kernel-uek)	ELSA-2024-12610	2024-09-10
Oracle Linux version 7 (kernel-uek)	ELSA-2024-12779	2024-10-11
Oracle Linux version 7 (kernel-uek-container)	ELSA-2024-12612	2024-09-11
Oracle Linux version 8 (kernel)	ELSA-2024-5101	2024-08-08
Oracle Linux version 8 (kernel-uek)	ELSA-2024-12610	2024-09-10
Oracle Linux version 8 (kernel-uek)	ELSA-2024-12618	2024-09-12
Oracle Linux version 8 (kernel-uek-container)	ELSA-2024-12612	2024-09-11
Oracle Linux version 9 (kernel)	ELSA-2024-5363	2024-08-14
Oracle Linux version 9 (kernel-uek)	ELSA-2024-12618	2024-09-12