CVE-2024-58093
Vulnérabilité non évaluée dans Linux (Linux)
Description
In the Linux kernel, the following vulnerability has been resolved: PCI/ASPM: Fix link state exit during switch upstream function removal Before 456d8aa37d0f ("PCI/ASPM: Disable ASPM on MFD function removal to avoid use-after-free"), we would free the ASPM link only after the last function on the bus pertaining to the given link was removed. That was too late. If function 0 is removed before sibling function, link->downstream would point to free'd memory after. After above change, we freed the ASPM parent link state upon any function removal on the bus pertaining to a given link. That is too early. If the link is to a PCIe switch with MFD on the upstream port, then removing functions other than 0 first would free a link which still remains parent_link to the remaining downstream ports. The resulting GPFs are especially frequent during hot-unplug, because pciehp removes devices on the link bus in reverse order. On that switch, function 0 is the virtual P2P bridge to the internal bus. Free exactly when function 0 is removed -- before the parent link is obsolete, but after all subordinate links are gone. [kwilczynski: commit log]
Gravité et risque d'exploitation
CVE-2024-58093 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 6.3.13, <=6.1.*, <=6.12.*, <=6.14.*, <0a0f9aecf66b98959aab7fb5764b4b3e522f4f5b, 5.15.180, 4203722d51afe3d239e03f15cc73efdf023a7103, 5.4.251, <6.5, 456d8aa37d0f56fc9e985e812496e861dcd6f2f2, <4d96930239981f312821a4065db8cc0f8240a173, <6.1.134, <cbf937dcadfd571a434f8074d057b32cd14fbea5, 0, <f556b6ba0ac5f8353287ce6ed761228f0b4fafb7, 7badf4d6f49a358a01ab072bbff88d3ee886c33b, 9856c0de49052174ab474113f4ba40c02aaee086, 6.14.2, 5.15.121, 6.1.134, 6.5, <5.10.236, <=5.10.*, <=6.6.*, 6.6.87, <8b930ddc2044e36866c41423e89889e0258695a3, <6.4, 6.13.11, 6.12.23, 7aecdd47910c51707696e8b0e045b9f88bd4230f, d51d2eeae4ce54d542909c4d9d07bf371a78592c, <=5.4.*, <5.15.180, <ba4cdc14c0d4df00d3e99bff7fe545303db98183, <5.4.292, 6.15, 5.10.236, <e5cd58f61e9d8024ee11bd78c12c8916891d4077, 6.4.4, <62db339ecc3d58d8fd83a9e4d80061cd943bb6e2, <=*, <=5.15.*, 5.10.188, <cd4b07507794f7ad1a74e12eca75121d98187e66, 5.4.292, <=6.13.*, 666e7f9d60cee23077ea3e6331f6f8a19f7ea03f, 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
- https://git.kernel.org/stable/c/0a0f9aecf66b98959aab7fb5764b4b3e522f4f5b
- https://git.kernel.org/stable/c/62db339ecc3d58d8fd83a9e4d80061cd943bb6e2
- https://git.kernel.org/stable/c/e5cd58f61e9d8024ee11bd78c12c8916891d4077
- https://git.kernel.org/stable/c/cd4b07507794f7ad1a74e12eca75121d98187e66
- https://git.kernel.org/stable/c/8b930ddc2044e36866c41423e89889e0258695a3
- https://git.kernel.org/stable/c/f556b6ba0ac5f8353287ce6ed761228f0b4fafb7
- https://git.kernel.org/stable/c/ba4cdc14c0d4df00d3e99bff7fe545303db98183
- https://git.kernel.org/stable/c/4d96930239981f312821a4065db8cc0f8240a173
- https://git.kernel.org/stable/c/cbf937dcadfd571a434f8074d057b32cd14fbea5