net/sunrpc: fix reference count leaks in rpc_sysfs_xprt_state_change (Linux Linux)

CVE-2021-47624
HIGH 7.1

At a glance

Source
NVD
EPSS
EPSS 0.24 % · percentile 15 ()
State
PUBLISHED
Published
Updated
Assigner
Linux
NVD status
Modified

Description

In the Linux kernel, the following vulnerability has been resolved: net/sunrpc: fix reference count leaks in rpc_sysfs_xprt_state_change The refcount leak issues take place in an error handling path. When the 3rd argument buf doesn't match with "offline", "online" or "remove", the function simply returns -EINVAL and forgets to decrease the reference count of a rpc_xprt object and a rpc_xprt_switch object increased by rpc_sysfs_xprt_kobj_get_xprt() and rpc_sysfs_xprt_kobj_get_xprt_switch(), causing reference count leaks of both unused objects. Fix this issue by jumping to the error handling path labelled with out_put when buf matches none of "offline", "online" or "remove".

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:HNVD · nvd@nist.gov (Primary)

European references

CERT-FR advisories

Affected configurations (NVD CPE)

Affected products

ProductVersions
Linux · Linuxaffected 5b7eb78486cd9ac58bfbd6d84ea0fe2d9fead03b < 4b22aa42bd4d2d630ef1854c139275c3532937cb ; affected 5b7eb78486cd9ac58bfbd6d84ea0fe2d9fead03b < 5f6024c05a2c0fdd180b29395aaf686d25af3a0f ; affected 5b7eb78486cd9ac58bfbd6d84ea0fe2d9fead03b < 776d794f28c95051bc70405a7b1fa40115658a18
Linux · Linuxaffected 5.14 ; unaffected 0 < 5.14 ; unaffected 5.15.24 ≤ 5.15.* ; unaffected 5.16.10 ≤ 5.16.* ; unaffected 5.17 ≤ *

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