cbcvebase.
CVE-2024-42076
published 2024-07-29

CVE-2024-42076: In the Linux kernel, the following vulnerability has been resolved: net: can: j1939: Initialize unused data in j1939_send_one() syzbot reported kernel-infoleak…

PriorityP421medium5.5CVSS 3.1
AVLACLPRLUINSUCNINAH
EPSS
0.22%
13.3th percentile
In the Linux kernel, the following vulnerability has been resolved: net: can: j1939: Initialize unused data in j1939_send_one() syzbot reported kernel-infoleak in raw_recvmsg() [1]. j1939_send_one() creates full frame including unused data, but it doesn't initialize it. This causes the kernel-infoleak issue. Fix this by initializing unused data. [1] BUG: KMSAN: kernel-infoleak in instrument_copy_to_user include/linux/instrumented.h:114 [inline] BUG: KMSAN: kernel-infoleak in copy_to_user_iter lib/iov_iter.c:24 [inline] BUG: KMSAN: kernel-infoleak in iterate_ubuf include/linux/iov_iter.h:29 [inline] BUG: KMSAN: kernel-infoleak in iterate_and_advance2 include/linux/iov_iter.h:245 [inline] BUG: KMSAN: kernel-infoleak in iterate_and_advance include/linux/iov_iter.h:271 [inline] BUG: KMSAN: kernel-infoleak in _copy_to_iter+0x366/0x2520 lib/iov_iter.c:185 instrument_copy_to_user include/linux/instrumented.h:114 [inline] copy_to_user_iter lib/iov_iter.c:24 [inline] iterate_ubuf include/linux/iov_iter.h:29 [inline] iterate_and_advance2 include/linux/iov_iter.h:245 [inline] iterate_and_advance include/linux/iov_iter.h:271 [inline] _copy_to_iter+0x366/0x2520 lib/iov_iter.c:185 copy_to_iter include/linux/uio.h:196 [inline] memcpy_to_msg include/linux/skbuff.h:4113 [inline] raw_recvmsg+0x2b8/0x9e0 net/can/raw.c:1008 sock_recvmsg_nosec net/socket.c:1046 [inline] sock_recvmsg+0x2c4/0x340 net/socket.c:1068 ____sys_recvmsg+0x18a/0x620 net/socket.c:2803 ___sys_recvmsg+0x223/0x840 net/socket.c:2845 do_recvmmsg+0x4fc/0xfd0 net/socket.c:2939 __sys_recvmmsg net/socket.c:3018 [inline] __do_sys_recvmmsg net/socket.c:3041 [inline] __se_sys_recvmmsg net/socket.c:3034 [inline] __x64_sys_recvmmsg+0x397/0x490 net/socket.c:3034 x64_sys_call+0xf6c/0x3b50 arch/x86/include/generated/asm/syscalls_64.h:300 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xcf/0x1e0 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f Uninit was created at: slab_post_alloc_hook mm/s

Affected

28 ranges· showing 25
VendorProductVersion rangeFixed in
debianlinux< linux 6.1.98-1 (bookworm)linux 6.1.98-1 (bookworm)
debianlinux-6.1< linux 6.1.98-1 (bookworm)linux 6.1.98-1 (bookworm)
linuxlinux
linuxlinux>= 9d71dd0c70099914fcd063135da3c580865e924c < 5e4ed38eb17eaca42de57d500cc0f9668d2b6abf5e4ed38eb17eaca42de57d500cc0f9668d2b6abf
linuxlinux>= 9d71dd0c70099914fcd063135da3c580865e924c < a2a0ebff7fdeb2f66e29335adf64b9e457300dd4a2a0ebff7fdeb2f66e29335adf64b9e457300dd4
linuxlinux>= 9d71dd0c70099914fcd063135da3c580865e924c < 4c5dc3927e17489c1cae6f48c0d5e4acb4cae01f4c5dc3927e17489c1cae6f48c0d5e4acb4cae01f
linuxlinux>= 9d71dd0c70099914fcd063135da3c580865e924c < f97cbce633923588307049c4aef9feb2987e371bf97cbce633923588307049c4aef9feb2987e371b
linuxlinux>= 9d71dd0c70099914fcd063135da3c580865e924c < ab2a683938ba4416d389c2f5651cbbb2c41b779fab2a683938ba4416d389c2f5651cbbb2c41b779f
linuxlinux>= 9d71dd0c70099914fcd063135da3c580865e924c < ba7e5ae8208ac07d8e1eace0951a34c169a2d298ba7e5ae8208ac07d8e1eace0951a34c169a2d298
linuxlinux>= 9d71dd0c70099914fcd063135da3c580865e924c < b7cdf1dd5d2a2d8200efd98d1893684db48fe134b7cdf1dd5d2a2d8200efd98d1893684db48fe134
linuxlinux_kernel< 5.45.4
linuxlinux_kernel>= 0 < 5.10.221-15.10.221-1
linuxlinux_kernel>= 0 < 6.1.98-16.1.98-1
linuxlinux_kernel>= 0 < 6.9.8-16.9.8-1
linuxlinux_kernel>= 0 < 6.9.8-16.9.8-1
linuxlinux_kernel>= 0 < 5.4.0-195.2155.4.0-195.215
linuxlinux_kernel>= 0 < 5.15.0-121.1315.15.0-121.131
linuxlinux_kernel>= 0 < 6.8.0-48.486.8.0-48.48
linuxlinux_kernel>= 5.11 < 5.15.1625.15.162
linuxlinux_kernel>= 5.16 < 6.1.976.1.97
linuxlinux_kernel>= 5.4.1 < 5.4.2795.4.279
linuxlinux_kernel>= 5.5 < 5.10.2215.10.221
linuxlinux_kernel>= 6.2 < 6.6.376.6.37
linuxlinux_kernel>= 6.7 < 6.9.86.9.8
msrcazl3_kernel_6.6.35.1-5_on_azure_linux_3.0

CVSS provenance

nvdv3.15.5MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
osv7.8HIGH
vendor_ubuntu7.8HIGH
vendor_debian5.5MEDIUM
vendor_msrc5.5MEDIUM
vendor_redhat5.5MEDIUM
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