CVE

CVE-2024-35958

Date: (C)2024-05-20   (M)2024-05-23

In the Linux kernel, the following vulnerability has been resolved: net: ena: Fix incorrect descriptor free behavior ENA has two types of TX queues: - queues which only process TX packets arriving from the network stack - queues which only process TX packets forwarded to it by XDP_REDIRECT or XDP_TX instructions The ena_free_tx_bufs() cycles through all descriptors in a TX queue and unmaps + frees every descriptor that hasn't been acknowledged yet by the device (uncompleted TX transactions). The function assumes that the processed TX queue is necessarily from the first category listed above and ends up using napi_consume_skb() for descriptors belonging to an XDP specific queue. This patch solves a bug in which, in case of a VF reset, the descriptors aren't freed correctly, leading to crashes.

CVSS Score and Metrics +CVSS Score and Metrics -

CVSS V3 Severity:		CVSS V2 Severity:
CVSS Score : 5.5		CVSS Score :
Exploit Score:		Exploit Score:
Impact Score:		Impact Score:
CVSS V3 Metrics:		CVSS V2 Metrics:
Attack Vector:		Access Vector:
Attack Complexity:		Access Complexity:
Privileges Required:		Authentication:
User Interaction:		Confidentiality:
Scope:		Integrity:
Confidentiality:		Availability:
Integrity:
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Reference:

https://git.kernel.org/stable/c/19ff8fed3338898b70b2aad831386c78564912e1

https://git.kernel.org/stable/c/5c7f2240d9835a7823d87f7460d8eae9f4e504c7

https://git.kernel.org/stable/c/b26aa765f7437e1bbe8db4c1641b12bd5dd378f0

https://git.kernel.org/stable/c/bf02d9fe00632d22fa91d34749c7aacf397b6cde

https://git.kernel.org/stable/c/c31baa07f01307b7ae05f3ce32b89d8e2ba0cc1d

https://git.kernel.org/stable/c/fdfbf54d128ab6ab255db138488f9650485795a2