| From bippy-5f407fcff5a0 Mon Sep 17 00:00:00 2001 |
| From: Greg Kroah-Hartman <gregkh@linuxfoundation.org> |
| To: <linux-cve-announce@vger.kernel.org> |
| Reply-to: <cve@kernel.org>, <linux-kernel@vger.kernel.org> |
| Subject: CVE-2024-39487: bonding: Fix out-of-bounds read in bond_option_arp_ip_targets_set() |
| |
| Description |
| =========== |
| |
| 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: |
| <TASK> |
| __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. |
| |
| The Linux kernel CVE team has assigned CVE-2024-39487 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Issue introduced in 3.13 with commit f9de11a165943a55e0fbda714caf60eaeb276a42 and fixed in 4.19.318 with commit 6a8a4fd082c439e19fede027e80c79bc4c84bb8e |
| Issue introduced in 3.13 with commit f9de11a165943a55e0fbda714caf60eaeb276a42 and fixed in 5.4.280 with commit 6b21346b399fd1336fe59233a17eb5ce73041ee1 |
| Issue introduced in 3.13 with commit f9de11a165943a55e0fbda714caf60eaeb276a42 and fixed in 5.10.222 with commit 707c85ba3527ad6aa25552033576b0f1ff835d7b |
| Issue introduced in 3.13 with commit f9de11a165943a55e0fbda714caf60eaeb276a42 and fixed in 5.15.163 with commit bfd14e5915c2669f292a31d028e75dcd82f1e7e9 |
| Issue introduced in 3.13 with commit f9de11a165943a55e0fbda714caf60eaeb276a42 and fixed in 6.1.98 with commit c8eb8ab9a44ff0e73492d0a12a643c449f641a9f |
| Issue introduced in 3.13 with commit f9de11a165943a55e0fbda714caf60eaeb276a42 and fixed in 6.6.39 with commit b75e33eae8667084bd4a63e67657c6a5a0f8d1e8 |
| Issue introduced in 3.13 with commit f9de11a165943a55e0fbda714caf60eaeb276a42 and fixed in 6.9.9 with commit 9f835e48bd4c75fdf6a9cff3f0b806a7abde78da |
| Issue introduced in 3.13 with commit f9de11a165943a55e0fbda714caf60eaeb276a42 and fixed in 6.10 with commit e271ff53807e8f2c628758290f0e499dbe51cb3d |
| |
| Please see https://www.kernel.org for a full list of currently supported |
| kernel versions by the kernel community. |
| |
| Unaffected versions might change over time as fixes are backported to |
| older supported kernel versions. The official CVE entry at |
| https://cve.org/CVERecord/?id=CVE-2024-39487 |
| will be updated if fixes are backported, please check that for the most |
| up to date information about this issue. |
| |
| |
| Affected files |
| ============== |
| |
| The file(s) affected by this issue are: |
| drivers/net/bonding/bond_options.c |
| |
| |
| Mitigation |
| ========== |
| |
| The Linux kernel CVE team recommends that you update to the latest |
| stable kernel version for this, and many other bugfixes. Individual |
| changes are never tested alone, but rather are part of a larger kernel |
| release. Cherry-picking individual commits is not recommended or |
| supported by the Linux kernel community at all. If however, updating to |
| the latest release is impossible, the individual changes to resolve this |
| issue can be found at these commits: |
| https://git.kernel.org/stable/c/6a8a4fd082c439e19fede027e80c79bc4c84bb8e |
| https://git.kernel.org/stable/c/6b21346b399fd1336fe59233a17eb5ce73041ee1 |
| https://git.kernel.org/stable/c/707c85ba3527ad6aa25552033576b0f1ff835d7b |
| https://git.kernel.org/stable/c/bfd14e5915c2669f292a31d028e75dcd82f1e7e9 |
| https://git.kernel.org/stable/c/c8eb8ab9a44ff0e73492d0a12a643c449f641a9f |
| https://git.kernel.org/stable/c/b75e33eae8667084bd4a63e67657c6a5a0f8d1e8 |
| https://git.kernel.org/stable/c/9f835e48bd4c75fdf6a9cff3f0b806a7abde78da |
| https://git.kernel.org/stable/c/e271ff53807e8f2c628758290f0e499dbe51cb3d |
