thermal: intel_powerclamp: Use get_cpu() instead of smp_processor_id() to avoid crash (Linux Linux)

CVE-2022-50494
MEDIUM 5.5

En bref

Source
NVD
EPSS
EPSS 0.16 % · centile 6 ()
État
PUBLISHED
Publiée
Mise à jour
Attribuée par
Linux
Statut NVD
Analyzed

Description

In the Linux kernel, the following vulnerability has been resolved: thermal: intel_powerclamp: Use get_cpu() instead of smp_processor_id() to avoid crash When CPU 0 is offline and intel_powerclamp is used to inject idle, it generates kernel BUG: BUG: using smp_processor_id() in preemptible [00000000] code: bash/15687 caller is debug_smp_processor_id+0x17/0x20 CPU: 4 PID: 15687 Comm: bash Not tainted 5.19.0-rc7+ #57 Call Trace: <TASK> dump_stack_lvl+0x49/0x63 dump_stack+0x10/0x16 check_preemption_disabled+0xdd/0xe0 debug_smp_processor_id+0x17/0x20 powerclamp_set_cur_state+0x7f/0xf9 [intel_powerclamp] ... ... Here CPU 0 is the control CPU by default and changed to the current CPU, if CPU 0 offlined. This check has to be performed under cpus_read_lock(), hence the above warning. Use get_cpu() instead of smp_processor_id() to avoid this BUG. [ rjw: Subject edits ]

Références

Scores

VersionScoreVecteurÉvalué par
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)

Références européennes

Avis du CERT-FR

Configurations affectées (CPE NVD)

Produits affectés

ProduitVersions
Linux · Linuxaffected d6d71ee4a14ae602db343ec48c491851d7ec5267 < 3e799e815097febbcb81b472285be824f5d089f9 ; affected d6d71ee4a14ae602db343ec48c491851d7ec5267 < 0f91f66c568b316b19cb042cf50584467b3bdff4 ; affected d6d71ee4a14ae602db343ec48c491851d7ec5267 < 6904727db0eb62fb0c2dce1cf331c341d97ee4b7 ; affected d6d71ee4a14ae602db343ec48c491851d7ec5267 < 5a646c38f648185ee2c62f2a19da3c6f04e27612 ; affected d6d71ee4a14ae602db343ec48c491851d7ec5267 < 513943bf879d45005213e6f5cfb7d9e9943f589f ; affected d6d71ee4a14ae602db343ec48c491851d7ec5267 < 5614908434451aafbf9b24cb5247cf1d21269f76
Linux · Linuxaffected 3.9 ; unaffected 0 < 3.9 ; 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