net/mlx5: Fix error path in multi-packet WQE transmit (Linux Linux)

CVE-2024-50001
HIGH 7.8

At a glance

Source
NVD
EPSS
EPSS 0.33 % · percentile 26 ()
State
PUBLISHED
Published
Updated
Assigner
Linux
NVD status
Modified

Description

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.

Weaknesses (CWE)

  • CWE-755 — Improper Handling of Exceptional Conditions

References

Scores

VersionScoreVectorScored by
CVSS 3.1HIGH 7.8CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HLinux
CVSS 3.1HIGH 7.8CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HNVD · 416baaa9-dc9f-4396-8d5f-8c081fb06d67 (Secondary)
CVSS 3.1MEDIUM 5.5CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:HNVD · nvd@nist.gov (Primary)

European references

CERT-FR advisories

Affected configurations (NVD CPE)

Affected products

ProductVersions
Linux · Linuxaffected 5af75c747e2a868abbf8611494b50ed5e076fca7 < ca36d6c1a49b6965c86dd528a73f38bc62d9c625 ; affected 5af75c747e2a868abbf8611494b50ed5e076fca7 < ce828b347cf1b3c1b12b091d02463c35ce5097f5 ; affected 5af75c747e2a868abbf8611494b50ed5e076fca7 < fc357e78176945ca7bcacf92ab794b9ccd41b4f4 ; affected 5af75c747e2a868abbf8611494b50ed5e076fca7 < 26fad69b34fcba80d5c7d9e651f628e6ac927754 ; affected 5af75c747e2a868abbf8611494b50ed5e076fca7 < ecf310aaf256acbc8182189fe0aa1021c3ddef72 ; affected 5af75c747e2a868abbf8611494b50ed5e076fca7 < 8bb8c12fb5e2b1f03d603d493c92941676f109b5
Linux · Linuxaffected 5.10 ; unaffected 0 < 5.10 ; unaffected 5.10.227 ≤ 5.10.* ; unaffected 5.15.168 ≤ 5.15.* ; unaffected 6.1.113 ≤ 6.1.* ; unaffected 6.6.55 ≤ 6.6.*

Sources

SourceLicence
CVE List (CVEProject cvelistV5)CVE Program Terms of Use
EPSS (FIRST.org)FIRST — attribution requested
ENISA EUVDENISA — reproduction authorised, source acknowledged
CERT-FR (ANSSI)Licence Ouverte / Etalab 2.0
NVD (NIST) via fkie-cad/nvd-json-data-feedsPublic domain — this product uses data from the NVD API but is not endorsed or certified by the NVD