Informazioni sul CVE-2024-41041
udp: Set SOCK_RCU_FREE earlier in udp_lib_get_port().
CWE ID: N/A
Base Score (CVSS): N/A
CVE: CVE-2024-41041
Descrizione: The provided snippet is a trace of a system call, specifically `ksys_write` on the x86 system. Let’s break down what it signifies: **What the Trace Represents:** This trace shows a system call being initiated by the kernel (ksys_write) to write data to a file descriptor. The trace details the sequence of instructions that lead up to this call. **Key Components:** * **`ksys_write`:** This is a kernel system call that allows the kernel to write data to a file descriptor. It’s a fundamental operation for managing data storage. * **`ip_rcv_finish_core.constprop.0+0xbdd/0xd20`:** This is the *start* of the trace. It’s the beginning of the system call’s execution. It’s a pointer to the beginning of the system call’s code. * **`net/ipv4/ip_input.c:349`:** This is the *first instruction* in the system call. It’s a call to the `ip_rcv_finish` function, which is responsible for receiving the input data for the system call. * **`net/ipv4/ip_input.c:447`:** The `ip_rcv_finish` function receives the data from the network interface. * **`NF_HOOK include/linux/netfilter.h:314 [inline]`:** This is a standard header file that contains the rules for how the kernel handles system calls. * **`NF_HOOK include/linux/netfilter.h:308 [inline]`:** Another header file, likely related to the network filter. * **`netif_receive_skb_one_core+0xb3/0xe0`:** This is a critical instruction. It’s the *first* instruction in the system call’s execution that actually *starts* the data transfer. It’s a function call to `netif_receive_skb_one_core`. * **`__netif_receive_skb_one_core+0xb3/0xe0`:** This function receives the data from the network interface. * **`__netif_receive_skb+0x21/0xd0`:** This is the *second* instruction. It’s a function call to `netif_receive_skb`, which is responsible for receiving the data from the network interface. * **`tun_rx_batched drivers/net/tun.c:1549 [inline]`:** This is a call to the `tun_rx_batched` driver, which handles the receiving of data for the TUN (Tunneling) interface. * **`tun_get_user+0x24db/0x2c50`:** This is a function call to `tun_get_user`, which is responsible for receiving the data for the TUN interface. * **`tun_chr_write_iter+0x107/0x1a0`:** This is a function call to `tun_chr_write_iter`, which is responsible for receiving the data for the TUN interface. * **`new_sync_write fs/read_write.c:497 [inline]`:** This is a function call to `new_sync_write`, which is responsible for synchronizing the write operation. * **`vfs_write+0x76f/0x8d0`:** This is a function call to `vfs_write`, which is responsible for writing the data to the file descriptor. * **`ksys_write`:** The system call itself. * **`do_syscall_x64 arch/x86/entry/common.c:52`:** This is the *last* instruction in the trace. It’s the *return* from the system call. **In Summary:** This trace shows the process of a system call being initiated to write data to a file descriptor. It’s a standard sequence of instructions that the kernel uses to manage data storage and network communication. The `ksys_write` call is a fundamental operation for the kernel. **Why this is important:** * **Debugging:** Understanding the trace can help in debugging kernel issues, especially related to network or file system operations. * **Security:** System calls are critical for security. Tracing them helps understand how the kernel handles sensitive data. * **Kernel Development:** This trace is part of the kernel’s tracing mechanism, allowing developers to monitor and analyze system calls. Let me know if you’d like me to elaborate on any specific part of this trace!
Vettore di attacco
Punteggio CVSS
Il CVSS è un sistema di valutazione che misura la gravità di una vulnerabilità informatica considerando fattori come l’impatto potenziale, la probabilità di attacco e la facilità di esecuzione.
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Dettaglio del Vettore
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Riferimenti esterni
- https://git.kernel.org/stable/c/7a67c4e47626e6daccda62888f8b096abb5d3940
- https://git.kernel.org/stable/c/9f965684c57c3117cfd2f754dd3270383c529fba
- https://git.kernel.org/stable/c/ddf516e50bf8a7bc9b3bd8a9831f9c7a8131a32a
- https://git.kernel.org/stable/c/a6db0d3ea6536e7120871e5448b3032570152ec6
- https://git.kernel.org/stable/c/c5fd77ca13d657c6e99bf04f0917445e6a80231e
- https://git.kernel.org/stable/c/20ceae10623c3b29fdf7609690849475bcdebdb0
- https://git.kernel.org/stable/c/5c0b485a8c6116516f33925b9ce5b6104a6eadfd
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