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CVE-2024-56372— net: tun: fix tun_napi_alloc_frags()

EPSS 0.02% · P4
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I. Basic Information for CVE-2024-56372

Vulnerability Information
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Vulnerability Title
net: tun: fix tun_napi_alloc_frags()
Source: NVD (National Vulnerability Database)
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: net: tun: fix tun_napi_alloc_frags() syzbot reported the following crash [1] Issue came with the blamed commit. Instead of going through all the iov components, we keep using the first one and end up with a malformed skb. [1] kernel BUG at net/core/skbuff.c:2849 ! Oops: invalid opcode: 0000 [#1] PREEMPT SMP KASAN PTI CPU: 0 UID: 0 PID: 6230 Comm: syz-executor132 Not tainted 6.13.0-rc1-syzkaller-00407-g96b6fcc0ee41 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/25/2024 RIP: 0010:__pskb_pull_tail+0x1568/0x1570 net/core/skbuff.c:2848 Code: 38 c1 0f 8c 32 f1 ff ff 4c 89 f7 e8 92 96 74 f8 e9 25 f1 ff ff e8 e8 ae 09 f8 48 8b 5c 24 08 e9 eb fb ff ff e8 d9 ae 09 f8 90 <0f> 0b 66 0f 1f 44 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 RSP: 0018:ffffc90004cbef30 EFLAGS: 00010293 RAX: ffffffff8995c347 RBX: 00000000fffffff2 RCX: ffff88802cf45a00 RDX: 0000000000000000 RSI: 00000000fffffff2 RDI: 0000000000000000 RBP: ffff88807df0c06a R08: ffffffff8995b084 R09: 1ffff1100fbe185c R10: dffffc0000000000 R11: ffffed100fbe185d R12: ffff888076e85d50 R13: ffff888076e85c80 R14: ffff888076e85cf4 R15: ffff888076e85c80 FS: 00007f0dca6ea6c0(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f0dca6ead58 CR3: 00000000119da000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: <TASK> skb_cow_data+0x2da/0xcb0 net/core/skbuff.c:5284 tipc_aead_decrypt net/tipc/crypto.c:894 [inline] tipc_crypto_rcv+0x402/0x24e0 net/tipc/crypto.c:1844 tipc_rcv+0x57e/0x12a0 net/tipc/node.c:2109 tipc_l2_rcv_msg+0x2bd/0x450 net/tipc/bearer.c:668 __netif_receive_skb_list_ptype net/core/dev.c:5720 [inline] __netif_receive_skb_list_core+0x8b7/0x980 net/core/dev.c:5762 __netif_receive_skb_list net/core/dev.c:5814 [inline] netif_receive_skb_list_internal+0xa51/0xe30 net/core/dev.c:5905 gro_normal_list include/net/gro.h:515 [inline] napi_complete_done+0x2b5/0x870 net/core/dev.c:6256 napi_complete include/linux/netdevice.h:567 [inline] tun_get_user+0x2ea0/0x4890 drivers/net/tun.c:1982 tun_chr_write_iter+0x10d/0x1f0 drivers/net/tun.c:2057 do_iter_readv_writev+0x600/0x880 vfs_writev+0x376/0xba0 fs/read_write.c:1050 do_writev+0x1b6/0x360 fs/read_write.c:1096 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Title
Linux kernel 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Linux kernel是美国Linux基金会的开源操作系统Linux所使用的内核。 Linux kernel存在安全漏洞，该漏洞源于net: tun模块的tun_napi_alloc_frags函数可能导致内核崩溃。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

VendorProductAffected VersionsCPESubscribe
LinuxLinux de4f5fed3f231a8ff4790bf52975f847b95b85ea ~ efe74dd58a72bd987b158142c904b7ef2ad132e2 -
LinuxLinux 6.4 -

II. Public POCs for CVE-2024-56372

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III. Intelligence Information for CVE-2024-56372

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Same Patch Batch · Linux · 2025-01-11 · 67 CVEs total

CVE-2024-57793virt: tdx-guest: Just leak decrypted memory on unrecoverable errors
CVE-2024-57878arm64: ptrace: fix partial SETREGSET for NT_ARM_FPMR
CVE-2024-57877arm64: ptrace: fix partial SETREGSET for NT_ARM_POE
CVE-2024-57876drm/dp_mst: Fix resetting msg rx state after topology removal
CVE-2024-57806btrfs: fix transaction atomicity bug when enabling simple quotas
CVE-2024-57805ASoC: SOF: Intel: hda-dai: Do not release the link DMA on STOP
CVE-2024-57804scsi: mpi3mr: Fix corrupt config pages PHY state is switched in sysfs
CVE-2024-57800ALSA: memalloc: prefer dma_mapping_error() over explicit address checking
CVE-2024-57799phy: rockchip: samsung-hdptx: Set drvdata before enabling runtime PM
CVE-2024-57798drm/dp_mst: Ensure mst_primary pointer is valid in drm_dp_mst_handle_up_req()
CVE-2024-57807scsi: megaraid_sas: Fix for a potential deadlock
CVE-2024-57792power: supply: gpio-charger: Fix set charge current limits
CVE-2024-57791net/smc: check return value of sock_recvmsg when draining clc data
CVE-2024-56788net: ethernet: oa_tc6: fix tx skb race condition between reference pointers
CVE-2024-56369drm/modes: Avoid divide by zero harder in drm_mode_vrefresh()
CVE-2024-56368ring-buffer: Fix overflow in __rb_map_vma
CVE-2024-55916Drivers: hv: util: Avoid accessing a ringbuffer not initialized yet
CVE-2024-55881KVM: x86: Play nice with protected guests in complete_hypercall_exit()
CVE-2024-54193accel/ivpu: Fix WARN in ivpu_ipc_send_receive_internal()
CVE-2024-54455accel/ivpu: Fix general protection fault in ivpu_bo_list()

Showing top 20 of 67 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2024-56372

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