In the Linux kernel, the following vulnerability has been resolved:
net/packet: fix slab-out-of-bounds access in packet_recvmsg()
syzbot found that when an AF_PACKET socket is using PACKET_COPY_THRESH
and mmap operations, tpacket_rcv() is queueing skbs with
garbage in skb->cb[], triggering a too big copy [1]
Presumably, users of af_packet using mmap() already gets correct
metadata from the mapped buffer, we can simply make sure
to clear 12 bytes that might be copied to user space later.
BUG: KASAN: stack-out-of-bounds in memcpy include/linux/fortify-string.h:225 [inline]
BUG: KASAN: stack-out-of-bounds in packet_recvmsg+0x56c/0x1150 net/packet/af_packet.c:3489
Write of size 165 at addr ffffc9000385fb78 by task syz-executor233/3631
CPU: 0 PID: 3631 Comm: syz-executor233 Not tainted 5.17.0-rc7-syzkaller-02396-g0b3660695e80 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
<TASK>
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0xcd/0x134 lib/dump_stack.c:106
print_address_description.constprop.0.cold+0xf/0x336 mm/kasan/report.c:255
__kasan_report mm/kasan/report.c:442 [inline]
kasan_report.cold+0x83/0xdf mm/kasan/report.c:459
check_region_inline mm/kasan/generic.c:183 [inline]
kasan_check_range+0x13d/0x180 mm/kasan/generic.c:189
memcpy+0x39/0x60 mm/kasan/shadow.c:66
memcpy include/linux/fortify-string.h:225 [inline]
packet_recvmsg+0x56c/0x1150 net/packet/af_packet.c:3489
sock_recvmsg_nosec net/socket.c:948 [inline]
sock_recvmsg net/socket.c:966 [inline]
sock_recvmsg net/socket.c:962 [inline]
____sys_recvmsg+0x2c4/0x600 net/socket.c:2632
___sys_recvmsg+0x127/0x200 net/socket.c:2674
__sys_recvmsg+0xe2/0x1a0 net/socket.c:2704
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x7fdfd5954c29
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 41 15 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 c0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffcf8e71e48 EFLAGS: 00000246 ORIG_RAX: 000000000000002f
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007fdfd5954c29
RDX: 0000000000000000 RSI: 0000000020000500 RDI: 0000000000000005
RBP: 0000000000000000 R08: 000000000000000d R09: 000000000000000d
R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffcf8e71e60
R13: 00000000000f4240 R14: 000000000000c1ff R15: 00007ffcf8e71e54
</TASK>
addr ffffc9000385fb78 is located in stack of task syz-executor233/3631 at offset 32 in frame:
____sys_recvmsg+0x0/0x600 include/linux/uio.h:246
this frame has 1 object:
[32, 160) 'addr'
Memory state around the buggy address:
ffffc9000385fa80: 00 04 f3 f3 f3 f3 f3 00 00 00 00 00 00 00 00 00
ffffc9000385fb00: 00 00 00 00 00 00 00 00 00 00 00 f1 f1 f1 f1 00
>ffffc9000385fb80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 f3
^
ffffc9000385fc00: f3 f3 f3 00 00 00 00 00 00 00 00 00 00 00 00 f1
ffffc9000385fc80: f1 f1 f1 00 f2 f2 f2 00 f2 f2 f2 00 00 00 00 00
==================================================================
References
Configurations
Configuration 1 (hide)
|
History
21 Nov 2024, 07:34
| Type | Values Removed | Values Added |
|---|---|---|
| References | () https://git.kernel.org/stable/c/268dcf1f7b3193bc446ec3d14e08a240e9561e4d - Mailing List, Patch | |
| References | () https://git.kernel.org/stable/c/70b7b3c055fd4a464da8da55ff4c1f84269f9b02 - Mailing List, Patch | |
| References | () https://git.kernel.org/stable/c/a055f5f2841f7522b44a2b1eccb1951b4b03d51a - Mailing List, Patch | |
| References | () https://git.kernel.org/stable/c/a33dd1e6693f80d805155b3f69c18c2f642915da - Mailing List, Patch | |
| References | () https://git.kernel.org/stable/c/b1e27cda1e3c12b705875bb7e247a97168580e33 - Mailing List, Patch | |
| References | () https://git.kernel.org/stable/c/b9d5772d60f8e7ef34e290f72fc20e3a4883e7d0 - Mailing List, Patch | |
| References | () https://git.kernel.org/stable/c/c700525fcc06b05adfea78039de02628af79e07a - Mailing List, Patch | |
| References | () https://git.kernel.org/stable/c/ef591b35176029fdefea38e8388ffa371e18f4b2 - Mailing List, Patch |
18 Jul 2024, 16:04
| Type | Values Removed | Values Added |
|---|---|---|
| CWE | CWE-125 | |
| References | () https://git.kernel.org/stable/c/268dcf1f7b3193bc446ec3d14e08a240e9561e4d - Mailing List, Patch | |
| References | () https://git.kernel.org/stable/c/70b7b3c055fd4a464da8da55ff4c1f84269f9b02 - Mailing List, Patch | |
| References | () https://git.kernel.org/stable/c/a055f5f2841f7522b44a2b1eccb1951b4b03d51a - Mailing List, Patch | |
| References | () https://git.kernel.org/stable/c/a33dd1e6693f80d805155b3f69c18c2f642915da - Mailing List, Patch | |
| References | () https://git.kernel.org/stable/c/b1e27cda1e3c12b705875bb7e247a97168580e33 - Mailing List, Patch | |
| References | () https://git.kernel.org/stable/c/b9d5772d60f8e7ef34e290f72fc20e3a4883e7d0 - Mailing List, Patch | |
| References | () https://git.kernel.org/stable/c/c700525fcc06b05adfea78039de02628af79e07a - Mailing List, Patch | |
| References | () https://git.kernel.org/stable/c/ef591b35176029fdefea38e8388ffa371e18f4b2 - Mailing List, Patch | |
| CVSS |
v2 : v3 : |
v2 : unknown
v3 : 5.5 |
| CPE | cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | |
| Summary |
|
|
| First Time |
Linux
Linux linux Kernel |
16 Jul 2024, 13:15
| Type | Values Removed | Values Added |
|---|---|---|
| New CVE |
Information
Published : 2024-07-16 13:15
Updated : 2024-11-21 07:34
NVD link : CVE-2022-48839
Mitre link : CVE-2022-48839
CVE.ORG link : CVE-2022-48839
JSON object : View
Products Affected
linux
- linux_kernel
CWE
CWE-125
Out-of-bounds Read