CVSS: -EPSS: 0%CPEs: 6EXPL: 0CVE-2024-43828 – ext4: fix infinite loop when replaying fast_commit
https://notcve.org/view.php?id=CVE-2024-43828
In the Linux kernel, the following vulnerability has been resolved: ext4: fix infinite loop when replaying fast_commit When doing fast_commit replay an infinite loop may occur due to an uninitialized extent_status struct. ext4_ext_determine_insert_hole() does not detect the replay and calls ext4_es_find_extent_range(), which will return immediately without initializing the 'es' variable. Because 'es' contains garbage, an integer overflow may happen causing an infinite loop in this function, easily reproducible using fstest generic/039. This commit fixes this issue by unconditionally initializing the structure in function ext4_es_find_extent_range(). Thanks to Zhang Yi, for figuring out the real problem! • https://git.kernel.org/stable/c/8016e29f4362e285f0f7e38fadc61a5b7bdfdfa2 https://git.kernel.org/stable/c/5ed0496e383cb6de120e56991385dce70bbb87c1 https://git.kernel.org/stable/c/0619f7750f2b178a1309808832ab20d85e0ad121 https://git.kernel.org/stable/c/181e63cd595c688194e07332f9944b3a63193de2 https://git.kernel.org/stable/c/c6e67df64783e99a657ef2b8c834ba2bf54c539c https://git.kernel.org/stable/c/81f819c537d29932e4b9267f02411cbc8b355178 https://git.kernel.org/stable/c/907c3fe532253a6ef4eb9c4d67efb71fab58c706 •
CVSS: -EPSS: 0%CPEs: 2EXPL: 0CVE-2024-43824 – PCI: endpoint: pci-epf-test: Make use of cached 'epc_features' in pci_epf_test_core_init()
https://notcve.org/view.php?id=CVE-2024-43824
In the Linux kernel, the following vulnerability has been resolved: PCI: endpoint: pci-epf-test: Make use of cached 'epc_features' in pci_epf_test_core_init() Instead of getting the epc_features from pci_epc_get_features() API, use the cached pci_epf_test::epc_features value to avoid the NULL check. Since the NULL check is already performed in pci_epf_test_bind(), having one more check in pci_epf_test_core_init() is redundant and it is not possible to hit the NULL pointer dereference. Also with commit a01e7214bef9 ("PCI: endpoint: Remove "core_init_notifier" flag"), 'epc_features' got dereferenced without the NULL check, leading to the following false positive Smatch warning: drivers/pci/endpoint/functions/pci-epf-test.c:784 pci_epf_test_core_init() error: we previously assumed 'epc_features' could be null (see line 747) Thus, remove the redundant NULL check and also use the epc_features:: {msix_capable/msi_capable} flags directly to avoid local variables. [kwilczynski: commit log] • https://git.kernel.org/stable/c/5e50ee27d4a52a817ab152128c48690ec7c5cdf1 https://git.kernel.org/stable/c/af4ad016abb1632ff7ee598a6037952b495e5b80 https://git.kernel.org/stable/c/5a5095a8bd1bd349cce1c879e5e44407a34dda8a •
CVSS: -EPSS: 0%CPEs: 4EXPL: 0CVE-2024-43823 – PCI: keystone: Fix NULL pointer dereference in case of DT error in ks_pcie_setup_rc_app_regs()
https://notcve.org/view.php?id=CVE-2024-43823
In the Linux kernel, the following vulnerability has been resolved: PCI: keystone: Fix NULL pointer dereference in case of DT error in ks_pcie_setup_rc_app_regs() If IORESOURCE_MEM is not provided in Device Tree due to any error, resource_list_first_type() will return NULL and pci_parse_request_of_pci_ranges() will just emit a warning. This will cause a NULL pointer dereference. Fix this bug by adding NULL return check. Found by Linux Verification Center (linuxtesting.org) with SVACE. • https://git.kernel.org/stable/c/0f71c60ffd26943fa9646aa73ad7889ace116ce2 https://git.kernel.org/stable/c/bbba48ad67c53feea05936ea1e029dcca8057506 https://git.kernel.org/stable/c/0a6f1b5fe8ef8268aaa069035639968ceeea0a23 https://git.kernel.org/stable/c/dbcdd1863ba2ec9b76ec131df25d797709e05597 https://git.kernel.org/stable/c/a231707a91f323af1e5d9f1722055ec2fc1c7775 •
CVSS: -EPSS: 0%CPEs: 2EXPL: 0CVE-2024-43819 – kvm: s390: Reject memory region operations for ucontrol VMs
https://notcve.org/view.php?id=CVE-2024-43819
In the Linux kernel, the following vulnerability has been resolved: kvm: s390: Reject memory region operations for ucontrol VMs This change rejects the KVM_SET_USER_MEMORY_REGION and KVM_SET_USER_MEMORY_REGION2 ioctls when called on a ucontrol VM. This is necessary since ucontrol VMs have kvm->arch.gmap set to 0 and would thus result in a null pointer dereference further in. Memory management needs to be performed in userspace and using the ioctls KVM_S390_UCAS_MAP and KVM_S390_UCAS_UNMAP. Also improve s390 specific documentation for KVM_SET_USER_MEMORY_REGION and KVM_SET_USER_MEMORY_REGION2. [frankja@linux.ibm.com: commit message spelling fix, subject prefix fix] • https://git.kernel.org/stable/c/27e0393f15fc8bc855c6a888387ff5ffd2181089 https://git.kernel.org/stable/c/49c9945c054df4c22008e2bf87ca74d3e2507aa6 https://git.kernel.org/stable/c/7816e58967d0e6cadce05c8540b47ed027dc2499 •
CVSS: -EPSS: 0%CPEs: 9EXPL: 0CVE-2024-43817 – net: missing check virtio
https://notcve.org/view.php?id=CVE-2024-43817
In the Linux kernel, the following vulnerability has been resolved: net: missing check virtio Two missing check in virtio_net_hdr_to_skb() allowed syzbot to crash kernels again 1. After the skb_segment function the buffer may become non-linear (nr_frags != 0), but since the SKBTX_SHARED_FRAG flag is not set anywhere the __skb_linearize function will not be executed, then the buffer will remain non-linear. Then the condition (offset >= skb_headlen(skb)) becomes true, which causes WARN_ON_ONCE in skb_checksum_help. 2. The struct sk_buff and struct virtio_net_hdr members must be mathematically related. (gso_size) must be greater than (needed) otherwise WARN_ON_ONCE. (remainder) must be greater than (needed) otherwise WARN_ON_ONCE. (remainder) may be 0 if division is without remainder. offset+2 (4191) > skb_headlen() (1116) WARNING: CPU: 1 PID: 5084 at net/core/dev.c:3303 skb_checksum_help+0x5e2/0x740 net/core/dev.c:3303 Modules linked in: CPU: 1 PID: 5084 Comm: syz-executor336 Not tainted 6.7.0-rc3-syzkaller-00014-gdf60cee26a2e #0 Hardware name: Google Compute Engine/Google Compute Engine, BIOS Google 11/10/2023 RIP: 0010:skb_checksum_help+0x5e2/0x740 net/core/dev.c:3303 Code: 89 e8 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85 52 01 00 00 44 89 e2 2b 53 74 4c 89 ee 48 c7 c7 40 57 e9 8b e8 af 8f dd f8 90 <0f> 0b 90 90 e9 87 fe ff ff e8 40 0f 6e f9 e9 4b fa ff ff 48 89 ef RSP: 0018:ffffc90003a9f338 EFLAGS: 00010286 RAX: 0000000000000000 RBX: ffff888025125780 RCX: ffffffff814db209 RDX: ffff888015393b80 RSI: ffffffff814db216 RDI: 0000000000000001 RBP: ffff8880251257f4 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000001 R12: 000000000000045c R13: 000000000000105f R14: ffff8880251257f0 R15: 000000000000105d FS: 0000555555c24380(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000002000f000 CR3: 0000000023151000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: <TASK> ip_do_fragment+0xa1b/0x18b0 net/ipv4/ip_output.c:777 ip_fragment.constprop.0+0x161/0x230 net/ipv4/ip_output.c:584 ip_finish_output_gso net/ipv4/ip_output.c:286 [inline] __ip_finish_output net/ipv4/ip_output.c:308 [inline] __ip_finish_output+0x49c/0x650 net/ipv4/ip_output.c:295 ip_finish_output+0x31/0x310 net/ipv4/ip_output.c:323 NF_HOOK_COND include/linux/netfilter.h:303 [inline] ip_output+0x13b/0x2a0 net/ipv4/ip_output.c:433 dst_output include/net/dst.h:451 [inline] ip_local_out+0xaf/0x1a0 net/ipv4/ip_output.c:129 iptunnel_xmit+0x5b4/0x9b0 net/ipv4/ip_tunnel_core.c:82 ipip6_tunnel_xmit net/ipv6/sit.c:1034 [inline] sit_tunnel_xmit+0xed2/0x28f0 net/ipv6/sit.c:1076 __netdev_start_xmit include/linux/netdevice.h:4940 [inline] netdev_start_xmit include/linux/netdevice.h:4954 [inline] xmit_one net/core/dev.c:3545 [inline] dev_hard_start_xmit+0x13d/0x6d0 net/core/dev.c:3561 __dev_queue_xmit+0x7c1/0x3d60 net/core/dev.c:4346 dev_queue_xmit include/linux/netdevice.h:3134 [inline] packet_xmit+0x257/0x380 net/packet/af_packet.c:276 packet_snd net/packet/af_packet.c:3087 [inline] packet_sendmsg+0x24ca/0x5240 net/packet/af_packet.c:3119 sock_sendmsg_nosec net/socket.c:730 [inline] __sock_sendmsg+0xd5/0x180 net/socket.c:745 __sys_sendto+0x255/0x340 net/socket.c:2190 __do_sys_sendto net/socket.c:2202 [inline] __se_sys_sendto net/socket.c:2198 [inline] __x64_sys_sendto+0xe0/0x1b0 net/socket.c:2198 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x40/0x110 arch/x86/entry/common.c:82 entry_SYSCALL_64_after_hwframe+0x63/0x6b Found by Linux Verification Center (linuxtesting.org) with Syzkaller • https://git.kernel.org/stable/c/0f6925b3e8da0dbbb52447ca8a8b42b371aac7db https://git.kernel.org/stable/c/2789bc090f4a2caef0cceb3f108867de608bb23a https://git.kernel.org/stable/c/16851e34b621bc7e652c508bb28c47948fb86958 https://git.kernel.org/stable/c/a05fb4ac72fb2ddbdcb135c87b0087ac59fa4de4 https://git.kernel.org/stable/c/a36703d08c83b1488a2f2922f0dc4263125ccd2d https://git.kernel.org/stable/c/27874ca77bd2b05a3779c7b3a5c75d8dd7f0b40f https://git.kernel.org/stable/c/5b1997487a3f3373b0f580c8a20b56c1b64b0775 https://git.kernel.org/stable/c/90d41ebe0cd4635f6410471efc1dd71b3 •