CVSS: -EPSS: 0%CPEs: 7EXPL: 0CVE-2024-42076 – net: can: j1939: Initialize unused data in j1939_send_one()
https://notcve.org/view.php?id=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 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/slub.c:3804 [inline] slab_alloc_node mm/slub.c:3845 [inline] kmem_cache_alloc_node+0x613/0xc50 mm/slub.c:3888 kmalloc_reserve+0x13d/0x4a0 net/core/skbuff.c:577 __alloc_skb+0x35b/0x7a0 net/core/skbuff.c:668 alloc_skb include/linux/skbuff.h:1313 [inline] alloc_skb_with_frags+0xc8/0xbf0 net/core/skbuff.c:6504 sock_alloc_send_pskb+0xa81/0xbf0 net/core/sock.c:2795 sock_alloc_send_skb include/net/sock.h:1842 [inline] j1939_sk_alloc_skb net/can/j1939/socket.c:878 [inline] j1939_sk_send_loop net/can/j1939/socket.c:1142 [inline] j1939_sk_sendmsg+0xc0a/0x2730 net/can/j1939/socket.c:1277 sock_sendmsg_nosec net/socket.c:730 [inline] __sock_sendmsg+0x30f/0x380 net/socket.c:745 ____sys_sendmsg+0x877/0xb60 net/socket.c:2584 ___sys_sendmsg+0x28d/0x3c0 net/socket.c:2638 __sys_sendmsg net/socket.c:2667 [inline] __do_sys_sendmsg net/socket.c:2676 [inline] __se_sys_sendmsg net/socket.c:2674 [inline] __x64_sys_sendmsg+0x307/0x4a0 net/socket.c:2674 x64_sys_call+0xc4b/0x3b50 arch/x86/include/generated/asm/syscalls_64.h:47 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 Bytes 12-15 of 16 are uninitialized Memory access of size 16 starts at ffff888120969690 Data copied to user address 00000000200017c0 CPU: 1 PID: 5050 Comm: syz-executor198 Not tainted 6.9.0-rc5-syzkaller-00031-g71b1543c83d6 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024 • https://git.kernel.org/stable/c/9d71dd0c70099914fcd063135da3c580865e924c https://git.kernel.org/stable/c/5e4ed38eb17eaca42de57d500cc0f9668d2b6abf https://git.kernel.org/stable/c/a2a0ebff7fdeb2f66e29335adf64b9e457300dd4 https://git.kernel.org/stable/c/4c5dc3927e17489c1cae6f48c0d5e4acb4cae01f https://git.kernel.org/stable/c/f97cbce633923588307049c4aef9feb2987e371b https://git.kernel.org/stable/c/ab2a683938ba4416d389c2f5651cbbb2c41b779f https://git.kernel.org/stable/c/ba7e5ae8208ac07d8e1eace0951a34c169a2d298 https://git.kernel.org/stable/c/b7cdf1dd5d2a2d8200efd98d1893684db •
CVSS: -EPSS: 0%CPEs: 4EXPL: 0CVE-2024-42073 – mlxsw: spectrum_buffers: Fix memory corruptions on Spectrum-4 systems
https://notcve.org/view.php?id=CVE-2024-42073
In the Linux kernel, the following vulnerability has been resolved: mlxsw: spectrum_buffers: Fix memory corruptions on Spectrum-4 systems The following two shared buffer operations make use of the Shared Buffer Status Register (SBSR): # devlink sb occupancy snapshot pci/0000:01:00.0 # devlink sb occupancy clearmax pci/0000:01:00.0 The register has two masks of 256 bits to denote on which ingress / egress ports the register should operate on. Spectrum-4 has more than 256 ports, so the register was extended by cited commit with a new 'port_page' field. However, when filling the register's payload, the driver specifies the ports as absolute numbers and not relative to the first port of the port page, resulting in memory corruptions [1]. Fix by specifying the ports relative to the first port of the port page. [1] BUG: KASAN: slab-use-after-free in mlxsw_sp_sb_occ_snapshot+0xb6d/0xbc0 Read of size 1 at addr ffff8881068cb00f by task devlink/1566 [...] Call Trace: <TASK> dump_stack_lvl+0xc6/0x120 print_report+0xce/0x670 kasan_report+0xd7/0x110 mlxsw_sp_sb_occ_snapshot+0xb6d/0xbc0 mlxsw_devlink_sb_occ_snapshot+0x75/0xb0 devlink_nl_sb_occ_snapshot_doit+0x1f9/0x2a0 genl_family_rcv_msg_doit+0x20c/0x300 genl_rcv_msg+0x567/0x800 netlink_rcv_skb+0x170/0x450 genl_rcv+0x2d/0x40 netlink_unicast+0x547/0x830 netlink_sendmsg+0x8d4/0xdb0 __sys_sendto+0x49b/0x510 __x64_sys_sendto+0xe5/0x1c0 do_syscall_64+0xc1/0x1d0 entry_SYSCALL_64_after_hwframe+0x77/0x7f [...] Allocated by task 1: kasan_save_stack+0x33/0x60 kasan_save_track+0x14/0x30 __kasan_kmalloc+0x8f/0xa0 copy_verifier_state+0xbc2/0xfb0 do_check_common+0x2c51/0xc7e0 bpf_check+0x5107/0x9960 bpf_prog_load+0xf0e/0x2690 __sys_bpf+0x1a61/0x49d0 __x64_sys_bpf+0x7d/0xc0 do_syscall_64+0xc1/0x1d0 entry_SYSCALL_64_after_hwframe+0x77/0x7f Freed by task 1: kasan_save_stack+0x33/0x60 kasan_save_track+0x14/0x30 kasan_save_free_info+0x3b/0x60 poison_slab_object+0x109/0x170 __kasan_slab_free+0x14/0x30 kfree+0xca/0x2b0 free_verifier_state+0xce/0x270 do_check_common+0x4828/0xc7e0 bpf_check+0x5107/0x9960 bpf_prog_load+0xf0e/0x2690 __sys_bpf+0x1a61/0x49d0 __x64_sys_bpf+0x7d/0xc0 do_syscall_64+0xc1/0x1d0 entry_SYSCALL_64_after_hwframe+0x77/0x7f • https://git.kernel.org/stable/c/f8538aec88b46642553a9ba9efa0952f5958dbed https://git.kernel.org/stable/c/bfa86a96912faa0b6142a918db88cc0c738a769e https://git.kernel.org/stable/c/942901e0fc74ad4b7992ef7ca9336e68d5fd6d36 https://git.kernel.org/stable/c/bf8781ede7bd9a37c0fcabca78976e61300b5a1a https://git.kernel.org/stable/c/c28947de2bed40217cf256c5d0d16880054fcf13 •
CVSS: 5.5EPSS: 0%CPEs: 8EXPL: 0CVE-2024-42070 – netfilter: nf_tables: fully validate NFT_DATA_VALUE on store to data registers
https://notcve.org/view.php?id=CVE-2024-42070
In the Linux kernel, the following vulnerability has been resolved: netfilter: nf_tables: fully validate NFT_DATA_VALUE on store to data registers register store validation for NFT_DATA_VALUE is conditional, however, the datatype is always either NFT_DATA_VALUE or NFT_DATA_VERDICT. This only requires a new helper function to infer the register type from the set datatype so this conditional check can be removed. Otherwise, pointer to chain object can be leaked through the registers. • https://git.kernel.org/stable/c/96518518cc417bb0a8c80b9fb736202e28acdf96 https://git.kernel.org/stable/c/40188a25a9847dbeb7ec67517174a835a677752f https://git.kernel.org/stable/c/23752737c6a618e994f9a310ec2568881a6b49c4 https://git.kernel.org/stable/c/5d43d789b57943720dca4181a05f6477362b94cf https://git.kernel.org/stable/c/461302e07f49687ffe7d105fa0a330c07c7646d8 https://git.kernel.org/stable/c/efb27ad05949403848f487823b597ed67060e007 https://git.kernel.org/stable/c/952bf8df222599baadbd4f838a49c4fef81d2564 https://git.kernel.org/stable/c/41a6375d48deaf7f730304b5153848bfa • CWE-200: Exposure of Sensitive Information to an Unauthorized Actor •
CVSS: -EPSS: 0%CPEs: 6EXPL: 0CVE-2024-42068 – bpf: Take return from set_memory_ro() into account with bpf_prog_lock_ro()
https://notcve.org/view.php?id=CVE-2024-42068
In the Linux kernel, the following vulnerability has been resolved: bpf: Take return from set_memory_ro() into account with bpf_prog_lock_ro() set_memory_ro() can fail, leaving memory unprotected. Check its return and take it into account as an error. • https://git.kernel.org/stable/c/a359696856ca9409fb97655c5a8ef0f549cb6e03 https://git.kernel.org/stable/c/e4f602e3ff749ba770bf8ff10196e18358de6720 https://git.kernel.org/stable/c/fdd411af8178edc6b7bf260f8fa4fba1bedd0a6d https://git.kernel.org/stable/c/e3540e5a7054d6daaf9a1415a48aacb092112a89 https://git.kernel.org/stable/c/05412471beba313ecded95aa17b25fe84bb2551a https://git.kernel.org/stable/c/7d2cc63eca0c993c99d18893214abf8f85d566d8 •
CVSS: -EPSS: 0%CPEs: 4EXPL: 0CVE-2024-42067 – bpf: Take return from set_memory_rox() into account with bpf_jit_binary_lock_ro()
https://notcve.org/view.php?id=CVE-2024-42067
In the Linux kernel, the following vulnerability has been resolved: bpf: Take return from set_memory_rox() into account with bpf_jit_binary_lock_ro() set_memory_rox() can fail, leaving memory unprotected. Check return and bail out when bpf_jit_binary_lock_ro() returns an error. • https://git.kernel.org/stable/c/08f6c05feb1db21653e98ca84ea04ca032d014c7 https://git.kernel.org/stable/c/9fef36cad60d4226f9d06953cd56d1d2f9119730 https://git.kernel.org/stable/c/044da7ae7afd4ef60806d73654a2e6a79aa4ed7a https://git.kernel.org/stable/c/e60adf513275c3a38e5cb67f7fd12387e43a3ff5 •