High 7.8Published Oct 21, 2024

CVE-2024-50001net/mlx5: Fix error path in multi-packet WQE transmit

Updated under an hour ago (Oct 27, 2026, 8:30 AM ET)

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No exploitation reported and no EPSS estimate yet.

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Exploited in the last 30 days

In the Linux kernel, the following vulnerability has been resolved: net/mlx5: Fix error path in multi-packet WQE transmit Remove the erroneous unmap in case no DMA mapping was established The multi-packet WQE transmit code attempts to obtain a DMA mapping for the skb. This could fail, e.g. under memory pressure, when the IOMMU driver just can't allocate more memory for page tables. While the code tries to handle this in the path below the err_unmap label it erroneously unmaps one entry from the sq's FIFO list of active mappings. Since the current map attempt failed this unmap is removing some random DMA mapping that might still be required. If the PCI function now presents that IOVA, the IOMMU may assumes a rogue DMA access and e.g. on s390 puts the PCI function in error state. The erroneous behavior was seen in a stress-test environment that created memory pressure.

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 5af75c747e2a868abbf8611494b50ed5e076fca7 before ca36d6c1a49b6965c86dd528a73f38bc62d9c625; from 5af75c747e2a868abbf8611494b50ed5e076fca7 before ce828b347cf1b3c1b12b091d02463c35ce5097f5; from 5af75c747e2a868abbf8611494b50ed5e076fca7 before fc357e78176945ca7bcacf92ab794b9ccd41b4f4; from 5af75c747e2a868abbf8611494b50ed5e076fca7 before 26fad69b34fcba80d5c7d9e651f628e6ac927754; from 5af75c747e2a868abbf8611494b50ed5e076fca7 before ecf310aaf256acbc8182189fe0aa1021c3ddef72; from 5af75c747e2a868abbf8611494b50ed5e076fca7 before 8bb8c12fb5e2b1f03d603d493c92941676f109b5; 5af75c747e2a868abbf8611494b50ed5e076fca7 builds before 2bcae12c795f32ddfbf8c80d1b5f1d3286341c32	CNA record
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
Siemens RUGGEDCOM RST2428P siemens:ruggedcom_rst2428p (from the name)	before V3.2	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)	before V3.2	CISA ADP
Siemens SCALANCE XCM-/XRM-/XCH-/XRH-300 family siemens:scalance_xcm_xrm_xch_xrh_300_family (from the name)	before V3.2	CISA ADP
linux linux_kernel linux:linux_kernel	from 5.10 before 5.10.227; from 5.11 before 5.15.168; from 5.16 before 6.1.113; from 6.2 before 6.6.55; from 6.7 before 6.10.14; from 6.11 before 6.11.3; 6.12	NVD

References

References

https://git.kernel.org/stable/c/ca36d6c1a49b6965c86dd528a73f38bc62d9c625	patch
https://git.kernel.org/stable/c/ce828b347cf1b3c1b12b091d02463c35ce5097f5	patch
https://git.kernel.org/stable/c/fc357e78176945ca7bcacf92ab794b9ccd41b4f4	patch
https://git.kernel.org/stable/c/26fad69b34fcba80d5c7d9e651f628e6ac927754	patch
https://git.kernel.org/stable/c/ecf310aaf256acbc8182189fe0aa1021c3ddef72	patch
https://git.kernel.org/stable/c/8bb8c12fb5e2b1f03d603d493c92941676f109b5	patch
https://git.kernel.org/stable/c/2bcae12c795f32ddfbf8c80d1b5f1d3286341c32	patch
https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html
https://lists.debian.org/debian-lts-announce/2025/03/msg00002.html
https://cert-portal.siemens.com/productcert/html/ssa-265688.html
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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.