CVE-2024-35958

MEDIUM
Published May 20, 2024 Modified May 12, 2026

Description

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.

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CVSS v3.1 Score

5.5
MEDIUM
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Affected Products

Vendor Product
linux linux_kernel
linux linux_kernel
linux linux_kernel
linux linux_kernel
linux linux_kernel
linux linux_kernel
linux linux_kernel
linux linux_kernel
debian debian_linux

References

Advisories & Patches

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 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

Frequently Asked Questions

What is CVE-2024-35958? +
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. It has a CVSS v3.1 base score of 5.5 (MEDIUM).
How severe is CVE-2024-35958? +
CVE-2024-35958 has a CVSS v3.1 score of 5.5 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance.
What products are affected by CVE-2024-35958? +
CVE-2024-35958 affects products from debian, linux, specifically: debian_linux, linux_kernel. Check the affected products table above for specific version ranges.
How do I check if I'm vulnerable to CVE-2024-35958? +
You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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