High 7.8Published May 20, 2024

CVE-2024-35958net: ena: Fix incorrect descriptor free behavior

Updated under an hour ago (Oct 26, 2026, 7:10 PM ET)

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Exploited in the last 30 days

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: 7.8 HIGH (v3.1, CNA)CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Weakness (CWE): Not given
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: Linux
NVD analysis: Modified
Record last updated: Oct 14, 2026
First seen by InfoSec Signals: Oct 14, 2026

Affected products

Affected products

Linux Linux linux:linux (from the name)	from 548c4940b9f1f527f81509468dd60b61418880b6 before b26aa765f7437e1bbe8db4c1641b12bd5dd378f0; from 548c4940b9f1f527f81509468dd60b61418880b6 before fdfbf54d128ab6ab255db138488f9650485795a2; 548c4940b9f1f527f81509468dd60b61418880b6 builds before 19ff8fed3338898b70b2aad831386c78564912e1; 548c4940b9f1f527f81509468dd60b61418880b6 builds before 5c7f2240d9835a7823d87f7460d8eae9f4e504c7; from 548c4940b9f1f527f81509468dd60b61418880b6 before c31baa07f01307b7ae05f3ce32b89d8e2ba0cc1d; from 548c4940b9f1f527f81509468dd60b61418880b6 before bf02d9fe00632d22fa91d34749c7aacf397b6cde	CNA record
Siemens RUGGEDCOM RST2428P siemens:ruggedcom_rst2428p (from the name)	before V3.1	CISA ADP
Siemens SCALANCE XC-300/XR-300/XC-400/XR-500WG/XR-500 family siemens:scalance_xc_300_xr_300_xc_400_xr_500wg_xr_500_family (from the name)	all versions not affected	CISA ADP
Siemens SCALANCE XCM-/XRM-/XCH-/XRH-300 family siemens:scalance_xcm_xrm_xch_xrh_300_family (from the name)	before V3.1	CISA ADP
Siemens SIMATIC S7-1500 TM MFP - GNU/Linux subsystem siemens:simatic_s7_1500_tm_mfp_gnu_linux_subsystem (from the name)	before V1.1.1	CISA ADP
linux linux_kernel linux:linux_kernel	from 5.6 before 5.10.216; from 5.11 before 5.15.156; from 5.16 before 6.1.87; from 6.2 before 6.6.28; from 6.7 before 6.8.7; 6.9; 6.9; 6.9	NVD
debian debian_linux debian:debian_linux	10.0	NVD

References

References

https://git.kernel.org/stable/c/b26aa765f7437e1bbe8db4c1641b12bd5dd378f0	patch
https://git.kernel.org/stable/c/fdfbf54d128ab6ab255db138488f9650485795a2	patch
https://git.kernel.org/stable/c/19ff8fed3338898b70b2aad831386c78564912e1	patch
https://git.kernel.org/stable/c/5c7f2240d9835a7823d87f7460d8eae9f4e504c7	patch
https://git.kernel.org/stable/c/c31baa07f01307b7ae05f3ce32b89d8e2ba0cc1d	patch
https://git.kernel.org/stable/c/bf02d9fe00632d22fa91d34749c7aacf397b6cde	patch
https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html	mailing-list, third-party-advisory
https://cert-portal.siemens.com/productcert/html/ssa-265688.html
https://cert-portal.siemens.com/productcert/html/ssa-613116.html

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.