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CVE-2023-53731

Vulnérabilité non évaluée dans Linux (Linux)

CVSS 0.0 · Non évaluée
EPSS 0.2%
Linux•Linux•Versions : <cde7b90e0539a3b11da377e463dfd2288a162dbf, 82b2ea5f904b3826934df4a00f3b8806272185f6, 1d482e666b8e74c7555dbdfbfb77205eeed3ff2d, <=6.1.*, 6.3.13, <4b9adb8d4a62ff7608d4a7d4eb42036a88f30980, <c09e8e3f7fd432984bf5422302b093d2371dfc48, <5.13, 5.4.251, <61ffe8b1ee084e5c82a4e4bbf9e7b68e0c06e464, 5.10.44, 0, <=6.3.*, <4.10, 76cc8e04f38c2bbfcba07f62864a011f142bd40c, 21df0c2e7d195de4a3c650de9361b3037fa6c59a, 1d6d43d4805da9b3fa0f5841e8b1083c89868f35, <4.14.322, 5.15.121, 5f155c4046200f067b1dc3140ea99ef56e4e0b74, <4.19.291, 6.5, a8e9111a8625dd11e70edd61f7a1ccd26c041442, 4.4.273, <=4.14.*, 4.14.322, <=5.10.*, <8d61f926d42045961e6b65191c09e3678d86a9cf, <8f6652ed2ad98fe6d13b903483d9257762ab2ec6, <1556ba034b95cfd4f75ea93c1a2679ae0444bba1, <4.5, <=5.4.*, 5.13, <=4.19.*, <a641240b7e071c5538dc0e7894ece833fce459dd, 59fba11d649854134c75ad88c8adafa9304ac419, 5.4.126, 5.12.11, 4.19.195, 4.9.273, 6.4.4, <=*, <=5.15.*, 4.19.291, <eb8e27c8fa9397b4a7b181c48fa58157dbe9902e, 5.10.188, <5.10.188, 4.14.237, <5.4.251, <=6.4.*, 6.1.39

Description

In the Linux kernel, the following vulnerability has been resolved: netlink: fix potential deadlock in netlink_set_err() syzbot reported a possible deadlock in netlink_set_err() [1] A similar issue was fixed in commit 1d482e666b8e ("netlink: disable IRQs for netlink_lock_table()") in netlink_lock_table() This patch adds IRQ safety to netlink_set_err() and __netlink_diag_dump() which were not covered by cited commit. [1] WARNING: possible irq lock inversion dependency detected 6.4.0-rc6-syzkaller-00240-g4e9f0ec38852 #0 Not tainted syz-executor.2/23011 just changed the state of lock: ffffffff8e1a7a58 (nl_table_lock){.+.?}-{2:2}, at: netlink_set_err+0x2e/0x3a0 net/netlink/af_netlink.c:1612 but this lock was taken by another, SOFTIRQ-safe lock in the past: (&local->queue_stop_reason_lock){..-.}-{2:2} and interrupts could create inverse lock ordering between them. other info that might help us debug this: Possible interrupt unsafe locking scenario: CPU0 CPU1 ---- ---- lock(nl_table_lock); local_irq_disable(); lock(&local->queue_stop_reason_lock); lock(nl_table_lock); <Interrupt> lock(&local->queue_stop_reason_lock); *** DEADLOCK ***

Gravité et risque d'exploitation

CVE-2023-53731 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 0.23 %, ce qui la place devant 13.1 % des CVE référencées.

Que faire ?

  • Vérifiez si Linux (versions <cde7b90e0539a3b11da377e463dfd2288a162dbf, 82b2ea5f904b3826934df4a00f3b8806272185f6, 1d482e666b8e74c7555dbdfbfb77205eeed3ff2d, <=6.1.*, 6.3.13, <4b9adb8d4a62ff7608d4a7d4eb42036a88f30980, <c09e8e3f7fd432984bf5422302b093d2371dfc48, <5.13, 5.4.251, <61ffe8b1ee084e5c82a4e4bbf9e7b68e0c06e464, 5.10.44, 0, <=6.3.*, <4.10, 76cc8e04f38c2bbfcba07f62864a011f142bd40c, 21df0c2e7d195de4a3c650de9361b3037fa6c59a, 1d6d43d4805da9b3fa0f5841e8b1083c89868f35, <4.14.322, 5.15.121, 5f155c4046200f067b1dc3140ea99ef56e4e0b74, <4.19.291, 6.5, a8e9111a8625dd11e70edd61f7a1ccd26c041442, 4.4.273, <=4.14.*, 4.14.322, <=5.10.*, <8d61f926d42045961e6b65191c09e3678d86a9cf, <8f6652ed2ad98fe6d13b903483d9257762ab2ec6, <1556ba034b95cfd4f75ea93c1a2679ae0444bba1, <4.5, <=5.4.*, 5.13, <=4.19.*, <a641240b7e071c5538dc0e7894ece833fce459dd, 59fba11d649854134c75ad88c8adafa9304ac419, 5.4.126, 5.12.11, 4.19.195, 4.9.273, 6.4.4, <=*, <=5.15.*, 4.19.291, <eb8e27c8fa9397b4a7b181c48fa58157dbe9902e, 5.10.188, <5.10.188, 4.14.237, <5.4.251, <=6.4.*, 6.1.39) 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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