iommu/omap: Fix buffer overflow in debugfs (Linux Linux)

CVE-2022-50301
HIGH 7.8

At a glance

Source
NVD
EPSS
EPSS 0.19 % · percentile 9 ()
State
PUBLISHED
Published
Updated
Assigner
Linux
NVD status
Analyzed

Description

In the Linux kernel, the following vulnerability has been resolved: iommu/omap: Fix buffer overflow in debugfs There are two issues here: 1) The "len" variable needs to be checked before the very first write. Otherwise if omap2_iommu_dump_ctx() with "bytes" less than 32 it is a buffer overflow. 2) The snprintf() function returns the number of bytes that *would* have been copied if there were enough space. But we want to know the number of bytes which were *actually* copied so use scnprintf() instead.

Weaknesses (CWE)

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:HNVD · nvd@nist.gov (Primary)

European references

CERT-FR advisories

Affected configurations (NVD CPE)

Affected products

ProductVersions
Linux · Linuxaffected bd4396f09a4a9e77423e92ec9448217ab46f6edf < 706e359cf046c142db290244c3f4938b20fbe805 ; affected bd4396f09a4a9e77423e92ec9448217ab46f6edf < ec53b99b6b9da8b501f001595a6260c03b42d5b7 ; affected bd4396f09a4a9e77423e92ec9448217ab46f6edf < 648472df221f2bbffb433b964bcb87baccc586d8 ; affected bd4396f09a4a9e77423e92ec9448217ab46f6edf < 4010a1afaae1c0fb9c2cac5de703bed29b1f1782 ; affected bd4396f09a4a9e77423e92ec9448217ab46f6edf < 2fee0dbfaeaaa4bda04279ce772c4572b1429d04 ; affected bd4396f09a4a9e77423e92ec9448217ab46f6edf < 0c7043a5b5c3b35f5dc8875757f71e7f491d64d4
Linux · Linuxaffected 3.19 ; unaffected 0 < 3.19 ; unaffected 4.9.331 ≤ 4.9.* ; unaffected 4.14.296 ≤ 4.14.* ; unaffected 4.19.262 ≤ 4.19.* ; unaffected 5.4.220 ≤ 5.4.*

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