EDAC/thunderx: Fix possible out-of-bounds string access (Linux Linux)

CVE-2023-52464
HIGH 7.8

At a glance

Source
NVD
EPSS
EPSS 0.27 % · percentile 19 ()
State
PUBLISHED
Published
Updated
Assigner
Linux
NVD status
Modified

Description

In the Linux kernel, the following vulnerability has been resolved: EDAC/thunderx: Fix possible out-of-bounds string access Enabling -Wstringop-overflow globally exposes a warning for a common bug in the usage of strncat(): drivers/edac/thunderx_edac.c: In function 'thunderx_ocx_com_threaded_isr': drivers/edac/thunderx_edac.c:1136:17: error: 'strncat' specified bound 1024 equals destination size [-Werror=stringop-overflow=] 1136 | strncat(msg, other, OCX_MESSAGE_SIZE); | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ... 1145 | strncat(msg, other, OCX_MESSAGE_SIZE); ... 1150 | strncat(msg, other, OCX_MESSAGE_SIZE); ... Apparently the author of this driver expected strncat() to behave the way that strlcat() does, which uses the size of the destination buffer as its third argument rather than the length of the source buffer. The result is that there is no check on the size of the allocated buffer. Change it to strlcat(). [ bp: Trim compiler output, fixup commit message. ]

Weaknesses (CWE)

  • CWE-119 — Improper Restriction of Operations within the Bounds of a Memory Buffer

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 41003396f932d7f027725c7acebb6a7caa41dc3e < 71c17ee02538802ceafc830f0736aa35b564e601 ; affected 41003396f932d7f027725c7acebb6a7caa41dc3e < 5da3b6e7196f0b4f3728e4e25eb20233a9ddfaf6 ; affected 41003396f932d7f027725c7acebb6a7caa41dc3e < 6aa7865ba7ff7f0ede0035180fb3b9400ceb405a ; affected 41003396f932d7f027725c7acebb6a7caa41dc3e < 700cf4bead80fac994dcc43ae1ca5d86d8959b21 ; affected 41003396f932d7f027725c7acebb6a7caa41dc3e < 9dbac9fdae6e3b411fc4c3fca3bf48f70609c398 ; affected 41003396f932d7f027725c7acebb6a7caa41dc3e < e1c86511241588efffaa49556196f09a498d5057
Linux · Linuxaffected 4.12 ; unaffected 0 < 4.12 ; unaffected 4.19.306 ≤ 4.19.* ; unaffected 5.4.268 ≤ 5.4.* ; unaffected 5.10.209 ≤ 5.10.* ; unaffected 5.15.148 ≤ 5.15.*

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