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CVE-2024-53198

Vulnérabilité élevée dans Linux (Linux)

CVSS 7.8 · Élevée
EPSS 0.2%
Linux•Linux•Versions : 6.13, <=6.1.*, <=6.12.*, <3fc0996d2fefe61219375fd650601724b8cf2d30, <=6.11.*, 0, 6.1.120, 5.10.231, <217bdce88b104269b73603b84d0ab4dd04f481bc, 5.15.174, 6.12.2, 6.6.64, 2.6.23, <2f977a4c82d35d063f5fe198bbc501c4b1c5ea0e, <=5.10.*, <=6.6.*, <87106169b4ce26f85561f953d13d1fd86d99b612, <afc545da381ba0c651b2658966ac737032676f01, <2.6.23, <=5.4.*, <804b96f8d0a02fa10b92f28b2e042f9128ed3ffc, 6.11.11, <e8823e6ff313465910edea07581627d85e68d9fd, 4bac07c993d03434ea902d3d4290d9e45944b66c, <=*, <=5.15.*, 5.4.287, <0aa9e30b5b4af5dd504801689d6d84c584290a45

Description

In the Linux kernel, the following vulnerability has been resolved: xen: Fix the issue of resource not being properly released in xenbus_dev_probe() This patch fixes an issue in the function xenbus_dev_probe(). In the xenbus_dev_probe() function, within the if (err) branch at line 313, the program incorrectly returns err directly without releasing the resources allocated by err = drv->probe(dev, id). As the return value is non-zero, the upper layers assume the processing logic has failed. However, the probe operation was performed earlier without a corresponding remove operation. Since the probe actually allocates resources, failing to perform the remove operation could lead to problems. To fix this issue, we followed the resource release logic of the xenbus_dev_remove() function by adding a new block fail_remove before the fail_put block. After entering the branch if (err) at line 313, the function will use a goto statement to jump to the fail_remove block, ensuring that the previously acquired resources are correctly released, thus preventing the reference count leak. This bug was identified by an experimental static analysis tool developed by our team. The tool specializes in analyzing reference count operations and detecting potential issues where resources are not properly managed. In this case, the tool flagged the missing release operation as a potential problem, which led to the development of this patch.

Gravité et risque d'exploitation

CVE-2024-53198 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 0.24 %, ce qui la place devant 14.6 % des CVE référencées.

Que faire ?

  • Vérifiez si Linux (versions 6.13, <=6.1.*, <=6.12.*, <3fc0996d2fefe61219375fd650601724b8cf2d30, <=6.11.*, 0, 6.1.120, 5.10.231, <217bdce88b104269b73603b84d0ab4dd04f481bc, 5.15.174, 6.12.2, 6.6.64, 2.6.23, <2f977a4c82d35d063f5fe198bbc501c4b1c5ea0e, <=5.10.*, <=6.6.*, <87106169b4ce26f85561f953d13d1fd86d99b612, <afc545da381ba0c651b2658966ac737032676f01, <2.6.23, <=5.4.*, <804b96f8d0a02fa10b92f28b2e042f9128ed3ffc, 6.11.11, <e8823e6ff313465910edea07581627d85e68d9fd, 4bac07c993d03434ea902d3d4290d9e45944b66c, <=*, <=5.15.*, 5.4.287, <0aa9e30b5b4af5dd504801689d6d84c584290a45) 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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