Orta CVSS 5.5

CVE-2024-41006: Linux Kernel: güvenlik açığı

Yayın: 12 Temmuz 2024 16:15 · Güncelleme: 6 Kasım 2026 09:47

Açıklama (NVD)

In the Linux kernel, the following vulnerability has been resolved: netrom: Fix a memory leak in nr_heartbeat_expiry() syzbot reported a memory leak in nr_create() [0]. Commit 409db27e3a2e ("netrom: Fix use-after-free of a listening socket.") added sock_hold() to the nr_heartbeat_expiry() function, where a) a socket has a SOCK_DESTROY flag or b) a listening socket has a SOCK_DEAD flag. But in the case "a," when the SOCK_DESTROY flag is set, the file descriptor has already been closed and the nr_release() function has been called. So it makes no sense to hold the reference count because no one will call another nr_destroy_socket() and put it as in the case "b." nr_connect nr_establish_data_link nr_start_heartbeat nr_release switch (nr->state) case NR_STATE_3 nr->state = NR_STATE_2 sock_set_flag(sk, SOCK_DESTROY); nr_rx_frame nr_process_rx_frame switch (nr->state) case NR_STATE_2 nr_state2_machine() nr_disconnect() nr_sk(sk)->state = NR_STATE_0 sock_set_flag(sk, SOCK_DEAD) nr_heartbeat_expiry switch (nr->state) case NR_STATE_0 if (sock_flag(sk, SOCK_DESTROY) || (sk->sk_state == TCP_LISTEN && sock_flag(sk, SOCK_DEAD))) sock_hold() // ( !!! ) nr_destroy_socket() To fix the memory leak, let's call sock_hold() only for a listening socket. Found by InfoTeCS on behalf of Linux Verification Center (linuxtesting.org) with Syzkaller. [0]: https://syzkaller.appspot.com/bug?extid=d327a1f3b12e1e206c16

Özet bilgiler

Ürün: Linux Linux Kernel
CVSS v3.1: 5.5 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
EPSS: %0,24 (yüzdelik 16)
CWE: CWE-401
Yama: Mevcut

Etkilenen sürümler

Ürün	Başlangıç	Bitiş	Düzeltildi
linux-linux-kernel	4.19.272	—	4.19.317
linux-linux-kernel	5.4.231	—	5.4.279
linux-linux-kernel	5.10.166	—	5.10.221
linux-linux-kernel	5.15.91	—	5.15.162
linux-linux-kernel	6.1.9	—	6.1.96
linux-linux-kernel	6.2	—	6.6.36
linux-linux-kernel	6.7	—	6.9.7
linux-linux-kernel	6.10	6.10	—
linux-linux-kernel	6.10	6.10	—
linux-linux-kernel	6.10	6.10	—
linux-linux-kernel	6.10	6.10	—

Kaynaklar

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