CVE-2024-38583
Vulnérabilité élevée dans Linux (Linux)
Description
In the Linux kernel, the following vulnerability has been resolved: nilfs2: fix use-after-free of timer for log writer thread Patch series "nilfs2: fix log writer related issues". This bug fix series covers three nilfs2 log writer-related issues, including a timer use-after-free issue and potential deadlock issue on unmount, and a potential freeze issue in event synchronization found during their analysis. Details are described in each commit log. This patch (of 3): A use-after-free issue has been reported regarding the timer sc_timer on the nilfs_sc_info structure. The problem is that even though it is used to wake up a sleeping log writer thread, sc_timer is not shut down until the nilfs_sc_info structure is about to be freed, and is used regardless of the thread's lifetime. Fix this issue by limiting the use of sc_timer only while the log writer thread is alive.
Gravité et risque d'exploitation
CVE-2024-38583 obtient un score CVSS de 7.8/10, soit une gravité élevée. Selon le modèle EPSS, la probabilité qu'elle soit exploitée dans les 30 prochains jours est de 0.26 %, ce qui la place devant 16.4 % des CVE référencées.
Que faire ?
- Vérifiez si Linux (versions <=6.1.*, 6.10, <f9186bba4ea282b07293c1c892441df3a5441cb0, 0, <67fa90d4a2ccd9ebb0e1e168c7d0b5d0cf3c7148, 6.1.94, <82933c84f188dcfe89eb26b0b48ab5d1ca99d164, <=5.10.*, <=6.6.*, fdce895ea5dd4e24edf1f4d693827349a4e5b3b4, 6.8.12, <=6.9.*, 5.10.219, <68e738be5c518fc3c4e9146b66f67c8fee0135fb, 4.19.316, <=5.4.*, 6.6.33, <=4.19.*, 5.4.278, <86a30d6302deddb9fb97ba6fc4b04d0e870b582a, <e65ccf3a4de4f0c763d94789615b83e11f204438, 5.15.161, <822ae5a8eac30478578a75f7e064f0584931bf2d, <2.6.35, <=6.8.*, <f5d4e04634c9cf68bdf23de08ada0bb92e8befe7, <=*, <=5.15.*, <2f12b2c03c5dae1a0de0a9e5853177e3d6eee3c6, 6.9.3, 2.6.35) 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
- https://git.kernel.org/stable/c/822ae5a8eac30478578a75f7e064f0584931bf2d
- https://git.kernel.org/stable/c/82933c84f188dcfe89eb26b0b48ab5d1ca99d164
- https://git.kernel.org/stable/c/67fa90d4a2ccd9ebb0e1e168c7d0b5d0cf3c7148
- https://git.kernel.org/stable/c/e65ccf3a4de4f0c763d94789615b83e11f204438
- https://git.kernel.org/stable/c/86a30d6302deddb9fb97ba6fc4b04d0e870b582a
- https://git.kernel.org/stable/c/f9186bba4ea282b07293c1c892441df3a5441cb0
- https://git.kernel.org/stable/c/2f12b2c03c5dae1a0de0a9e5853177e3d6eee3c6
- https://git.kernel.org/stable/c/68e738be5c518fc3c4e9146b66f67c8fee0135fb
- https://git.kernel.org/stable/c/f5d4e04634c9cf68bdf23de08ada0bb92e8befe7