CVE-2024-50128
Severity CVSS v4.0:
Pending analysis
Type:
CWE-125
Out-of-bounds Read
Publication date:
05/11/2024
Last modified:
08/11/2024
Description
In the Linux kernel, the following vulnerability has been resolved:<br />
<br />
net: wwan: fix global oob in wwan_rtnl_policy<br />
<br />
The variable wwan_rtnl_link_ops assign a *bigger* maxtype which leads to<br />
a global out-of-bounds read when parsing the netlink attributes. Exactly<br />
same bug cause as the oob fixed in commit b33fb5b801c6 ("net: qualcomm:<br />
rmnet: fix global oob in rmnet_policy").<br />
<br />
==================================================================<br />
BUG: KASAN: global-out-of-bounds in validate_nla lib/nlattr.c:388 [inline]<br />
BUG: KASAN: global-out-of-bounds in __nla_validate_parse+0x19d7/0x29a0 lib/nlattr.c:603<br />
Read of size 1 at addr ffffffff8b09cb60 by task syz.1.66276/323862<br />
<br />
CPU: 0 PID: 323862 Comm: syz.1.66276 Not tainted 6.1.70 #1<br />
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.13.0-1ubuntu1.1 04/01/2014<br />
Call Trace:<br />
<br />
__dump_stack lib/dump_stack.c:88 [inline]<br />
dump_stack_lvl+0x177/0x231 lib/dump_stack.c:106<br />
print_address_description mm/kasan/report.c:284 [inline]<br />
print_report+0x14f/0x750 mm/kasan/report.c:395<br />
kasan_report+0x139/0x170 mm/kasan/report.c:495<br />
validate_nla lib/nlattr.c:388 [inline]<br />
__nla_validate_parse+0x19d7/0x29a0 lib/nlattr.c:603<br />
__nla_parse+0x3c/0x50 lib/nlattr.c:700<br />
nla_parse_nested_deprecated include/net/netlink.h:1269 [inline]<br />
__rtnl_newlink net/core/rtnetlink.c:3514 [inline]<br />
rtnl_newlink+0x7bc/0x1fd0 net/core/rtnetlink.c:3623<br />
rtnetlink_rcv_msg+0x794/0xef0 net/core/rtnetlink.c:6122<br />
netlink_rcv_skb+0x1de/0x420 net/netlink/af_netlink.c:2508<br />
netlink_unicast_kernel net/netlink/af_netlink.c:1326 [inline]<br />
netlink_unicast+0x74b/0x8c0 net/netlink/af_netlink.c:1352<br />
netlink_sendmsg+0x882/0xb90 net/netlink/af_netlink.c:1874<br />
sock_sendmsg_nosec net/socket.c:716 [inline]<br />
__sock_sendmsg net/socket.c:728 [inline]<br />
____sys_sendmsg+0x5cc/0x8f0 net/socket.c:2499<br />
___sys_sendmsg+0x21c/0x290 net/socket.c:2553<br />
__sys_sendmsg net/socket.c:2582 [inline]<br />
__do_sys_sendmsg net/socket.c:2591 [inline]<br />
__se_sys_sendmsg+0x19e/0x270 net/socket.c:2589<br />
do_syscall_x64 arch/x86/entry/common.c:51 [inline]<br />
do_syscall_64+0x45/0x90 arch/x86/entry/common.c:81<br />
entry_SYSCALL_64_after_hwframe+0x63/0xcd<br />
RIP: 0033:0x7f67b19a24ad<br />
RSP: 002b:00007f67b17febb8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e<br />
RAX: ffffffffffffffda RBX: 00007f67b1b45f80 RCX: 00007f67b19a24ad<br />
RDX: 0000000000000000 RSI: 0000000020005e40 RDI: 0000000000000004<br />
RBP: 00007f67b1a1e01d R08: 0000000000000000 R09: 0000000000000000<br />
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000<br />
R13: 00007ffd2513764f R14: 00007ffd251376e0 R15: 00007f67b17fed40<br />
<br />
<br />
The buggy address belongs to the variable:<br />
wwan_rtnl_policy+0x20/0x40<br />
<br />
The buggy address belongs to the physical page:<br />
page:ffffea00002c2700 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0xb09c<br />
flags: 0xfff00000001000(reserved|node=0|zone=1|lastcpupid=0x7ff)<br />
raw: 00fff00000001000 ffffea00002c2708 ffffea00002c2708 0000000000000000<br />
raw: 0000000000000000 0000000000000000 00000001ffffffff 0000000000000000<br />
page dumped because: kasan: bad access detected<br />
page_owner info is not present (never set?)<br />
<br />
Memory state around the buggy address:<br />
ffffffff8b09ca00: 05 f9 f9 f9 05 f9 f9 f9 00 01 f9 f9 00 01 f9 f9<br />
ffffffff8b09ca80: 00 00 00 05 f9 f9 f9 f9 00 00 03 f9 f9 f9 f9 f9<br />
>ffffffff8b09cb00: 00 00 00 00 05 f9 f9 f9 00 00 00 00 f9 f9 f9 f9<br />
^<br />
ffffffff8b09cb80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00<br />
==================================================================<br />
<br />
According to the comment of `nla_parse_nested_deprecated`, use correct size<br />
`IFLA_WWAN_MAX` here to fix this issue.
Impact
Base Score 3.x
7.10
Severity 3.x
HIGH
Vulnerable products and versions
CPE | From | Up to |
---|---|---|
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | 5.14 (including) | 5.15.170 (excluding) |
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | 5.16 (including) | 6.1.115 (excluding) |
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | 6.2 (including) | 6.6.59 (excluding) |
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | 6.7 (including) | 6.11.6 (excluding) |
cpe:2.3:o:linux:linux_kernel:6.12:rc1:*:*:*:*:*:* | ||
cpe:2.3:o:linux:linux_kernel:6.12:rc2:*:*:*:*:*:* | ||
cpe:2.3:o:linux:linux_kernel:6.12:rc3:*:*:*:*:*:* | ||
cpe:2.3:o:linux:linux_kernel:6.12:rc4:*:*:*:*:*:* |
To consult the complete list of CPE names with products and versions, see this page
References to Advisories, Solutions, and Tools
- https://git.kernel.org/stable/c/47dd5447cab8ce30a847a0337d5341ae4c7476a7
- https://git.kernel.org/stable/c/69076f8435c1c5dae5f814eaf4c361d1f00b22a3
- https://git.kernel.org/stable/c/9683804e36668f6093fb06e202eed2f188ba437e
- https://git.kernel.org/stable/c/a3ffce63dcc0c208edd4d196e17baed22ebcb643
- https://git.kernel.org/stable/c/c9a0aed51977198df005d0a623090e38e2d77d7b