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CVE-2023-53315

Vulnérabilité élevée dans Linux (Linux)

CVSS 8.8 · Élevée
EPSS 0.2%
Linux•Linux•Versions : <=6.1.*, 5.10.181, 0, <068fd06148fbf0af95bb08dc77cff34ee679fdbc, <=6.3.*, 6.4, <f9fff67d2d7ca6fa8066132003a3deef654c55b1, 6.3.4, 5.6, <=5.10.*, 6.1.30, <5.6, <67459491f78146bcf7d93596e5b709d063dff5d8, <=*, <=5.15.*, <3d3f8fe01a01d94a17fe1ae0d2e894049a972717, d5c65159f2895379e11ca13f62feabe93278985d, 5.15.113, <866921dc06b94df91acfcf9359b57da943ed99b3

Description

In the Linux kernel, the following vulnerability has been resolved: wifi: ath11k: Fix SKB corruption in REO destination ring While running traffics for a long time, randomly an RX descriptor filled with value "0" from REO destination ring is received. This descriptor which is invalid causes the wrong SKB (SKB stored in the IDR lookup with buffer id "0") to be fetched which in turn causes SKB memory corruption issue and the same leads to crash after some time. Changed the start id for idr allocation to "1" and the buffer id "0" is reserved for error validation. Introduced Sanity check to validate the descriptor, before processing the SKB. Crash Signature : Unable to handle kernel paging request at virtual address 3f004900 PC points to "b15_dma_inv_range+0x30/0x50" LR points to "dma_cache_maint_page+0x8c/0x128". The Backtrace obtained is as follows: [<8031716c>] (b15_dma_inv_range) from [<80313a4c>] (dma_cache_maint_page+0x8c/0x128) [<80313a4c>] (dma_cache_maint_page) from [<80313b90>] (__dma_page_dev_to_cpu+0x28/0xcc) [<80313b90>] (__dma_page_dev_to_cpu) from [<7fb5dd68>] (ath11k_dp_process_rx+0x1e8/0x4a4 [ath11k]) [<7fb5dd68>] (ath11k_dp_process_rx [ath11k]) from [<7fb53c20>] (ath11k_dp_service_srng+0xb0/0x2ac [ath11k]) [<7fb53c20>] (ath11k_dp_service_srng [ath11k]) from [<7f67bba4>] (ath11k_pci_ext_grp_napi_poll+0x1c/0x78 [ath11k_pci]) [<7f67bba4>] (ath11k_pci_ext_grp_napi_poll [ath11k_pci]) from [<807d5cf4>] (__napi_poll+0x28/0xb8) [<807d5cf4>] (__napi_poll) from [<807d5f28>] (net_rx_action+0xf0/0x280) [<807d5f28>] (net_rx_action) from [<80302148>] (__do_softirq+0xd0/0x280) [<80302148>] (__do_softirq) from [<80320408>] (irq_exit+0x74/0xd4) [<80320408>] (irq_exit) from [<803638a4>] (__handle_domain_irq+0x90/0xb4) [<803638a4>] (__handle_domain_irq) from [<805bedec>] (gic_handle_irq+0x58/0x90) [<805bedec>] (gic_handle_irq) from [<80301a78>] (__irq_svc+0x58/0x8c) Tested-on: IPQ8074 hw2.0 AHB WLAN.HK.2.7.0.1-01744-QCAHKSWPL_SILICONZ-1

Gravité et risque d'exploitation

CVE-2023-53315 obtient un score CVSS de 8.8/10, 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 13.7 % des CVE référencées.

Que faire ?

  • Vérifiez si Linux (versions <=6.1.*, 5.10.181, 0, <068fd06148fbf0af95bb08dc77cff34ee679fdbc, <=6.3.*, 6.4, <f9fff67d2d7ca6fa8066132003a3deef654c55b1, 6.3.4, 5.6, <=5.10.*, 6.1.30, <5.6, <67459491f78146bcf7d93596e5b709d063dff5d8, <=*, <=5.15.*, <3d3f8fe01a01d94a17fe1ae0d2e894049a972717, d5c65159f2895379e11ca13f62feabe93278985d, 5.15.113, <866921dc06b94df91acfcf9359b57da943ed99b3) 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

Rechercher une autre CVE