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CVE-2024-41006

Vulnérabilité non évaluée dans Linux (Linux)

CVSS 0.0 · Non évaluée
EPSS 0.2%
Linux•Linux•Versions : fe9b9e621cebe6b7e83f7e954c70f8bb430520e5, d2d3ab1b1de3302de2c85769121fd4f890e47ceb, <=6.1.*, 5.4.279, <5391f9db2cab5ef1cb411be1ab7dbec728078fba, 5.4.231, 6.10, <4.19.317, e666990abb2e42dd4ba979b4706280a3664cfae7, <5.10.221, <d377f5a28332954b19e373d36823e59830ab1712, 0, 4.19.272, <6.1.96, <=5.10.*, <=6.6.*, 5.10.166, 6.6.36, 6.1.9, <=6.9.*, 6.9.7, 5.15.162, <=5.4.*, 4.14.305, <=4.19.*, 5.10.221, <6.2, <5.15.162, <5.4.279, 6.1.96, 51e394c6f81adbfe7c34d15f58b3d4d44f144acf, <a02fd5d775cf9787ee7698c797e20f2fa13d2e2b, <=*, <=5.15.*, <280cf1173726a7059b628c610c71050d5c0b6937, 409db27e3a2eb5e8ef7226ca33be33361b3ed1c9, 4.19.317, <d616876256b38ecf9a1a1c7d674192c5346bc69c, <b6ebe4fed73eedeb73f4540f8edc4871945474c8, a31caf5779ace8fa98b0d454133808e082ee7a1b, <0b9130247f3b6a1122478471ff0e014ea96bb735, 5.15.91, <e07a9c2a850cdebf625e7a1b8171bd23a8554313, <4.15, 6.2, 7de16d75b20ab13b75a7291f449a1b00090edfea

Description

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

Gravité et risque d'exploitation

CVE-2024-41006 obtient un score CVSS de 0.0/10, soit une gravité non évaluée. Selon le modèle EPSS, la probabilité qu'elle soit exploitée dans les 30 prochains jours est de 0.24 %, ce qui la place devant 14.5 % des CVE référencées.

Que faire ?

  • Vérifiez si Linux (versions fe9b9e621cebe6b7e83f7e954c70f8bb430520e5, d2d3ab1b1de3302de2c85769121fd4f890e47ceb, <=6.1.*, 5.4.279, <5391f9db2cab5ef1cb411be1ab7dbec728078fba, 5.4.231, 6.10, <4.19.317, e666990abb2e42dd4ba979b4706280a3664cfae7, <5.10.221, <d377f5a28332954b19e373d36823e59830ab1712, 0, 4.19.272, <6.1.96, <=5.10.*, <=6.6.*, 5.10.166, 6.6.36, 6.1.9, <=6.9.*, 6.9.7, 5.15.162, <=5.4.*, 4.14.305, <=4.19.*, 5.10.221, <6.2, <5.15.162, <5.4.279, 6.1.96, 51e394c6f81adbfe7c34d15f58b3d4d44f144acf, <a02fd5d775cf9787ee7698c797e20f2fa13d2e2b, <=*, <=5.15.*, <280cf1173726a7059b628c610c71050d5c0b6937, 409db27e3a2eb5e8ef7226ca33be33361b3ed1c9, 4.19.317, <d616876256b38ecf9a1a1c7d674192c5346bc69c, <b6ebe4fed73eedeb73f4540f8edc4871945474c8, a31caf5779ace8fa98b0d454133808e082ee7a1b, <0b9130247f3b6a1122478471ff0e014ea96bb735, 5.15.91, <e07a9c2a850cdebf625e7a1b8171bd23a8554313, <4.15, 6.2, 7de16d75b20ab13b75a7291f449a1b00090edfea) est présent sur votre parc.
  • Appliquez le correctif ou la version corrigée indiqués dans les références de l'éditeur.
  • À défaut de correctif, limitez l'exposition (filtrage réseau, désactivation du composant).
  • Automatisez la détection : les agents CVE Heimdall (gratuits, open source) corrèlent l'inventaire de vos serveurs avec la base CVE.

Références

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