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CVE-2025-39998

scsi: target: target_core_configfs: Add length check to avoid buffer overflow

HIGH 7.1

At a glance

Source
NVD
EPSS
EPSS 0.17 % · percentile 7 ()
State
PUBLISHED
Published
Updated
Assigner
Linux
NVD status
Deferred

Description

In the Linux kernel, the following vulnerability has been resolved: scsi: target: target_core_configfs: Add length check to avoid buffer overflow A buffer overflow arises from the usage of snprintf to write into the buffer "buf" in target_lu_gp_members_show function located in /drivers/target/target_core_configfs.c. This buffer is allocated with size LU_GROUP_NAME_BUF (256 bytes). snprintf(...) formats multiple strings into buf with the HBA name (hba->hba_group.cg_item), a slash character, a devicename (dev-> dev_group.cg_item) and a newline character, the total formatted string length may exceed the buffer size of 256 bytes. Since snprintf() returns the total number of bytes that would have been written (the length of %s/%sn ), this value may exceed the buffer length (256 bytes) passed to memcpy(), this will ultimately cause function memcpy reporting a buffer overflow error. An additional check of the return value of snprintf() can avoid this buffer overflow.

References

Scores

VersionScoreVectorScored by
CVSS 3.1HIGH 7.1CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:HLinux
CVSS 3.1HIGH 7.1CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:HNVD · 416baaa9-dc9f-4396-8d5f-8c081fb06d67 (Secondary)

European references

CERT-FR advisories

Affected products

ProductVersions
Linux · Linuxaffected c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5 < e6eeee5dc0d9221ff96d1b229b1d0222c8871b84 ; affected c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5 < 764a91e2fc9639e07aac93bc70e387e6b1e33084 ; affected c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5 < ddc79fba132b807ff775467acceaf48b456e008b ; affected c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5 < e73fe0eefac3e15bf88fb5b4afae4c76215ee4d4 ; affected c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5 < f03aa5e39da7d045615b3951d2a6ca1d7132f881 ; affected c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5 < 53c6351597e6a17ec6619f6f060d54128cb9a187
Linux · Linuxaffected 2.6.38 ; unaffected 0 < 2.6.38 ; unaffected 5.4.301 ≤ 5.4.* ; unaffected 5.10.246 ≤ 5.10.* ; unaffected 5.15.195 ≤ 5.15.* ; unaffected 6.1.156 ≤ 6.1.*

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