rtc: pl031: fix rtc features null pointer dereference (Linux Linux)

CVE-2022-49273
MEDIUM 5.5

At a glance

Source
NVD
EPSS
EPSS 0.26 % · percentile 18 ()
State
PUBLISHED
Published
Updated
Assigner
Linux
NVD status
Modified

Description

In the Linux kernel, the following vulnerability has been resolved: rtc: pl031: fix rtc features null pointer dereference When there is no interrupt line, rtc alarm feature is disabled. The clearing of the alarm feature bit was being done prior to allocations of ldata->rtc device, resulting in a null pointer dereference. Clear RTC_FEATURE_ALARM after the rtc device is allocated.

Weaknesses (CWE)

  • CWE-476 — NULL Pointer Dereference

References

Scores

VersionScoreVectorScored by
CVSS 3.1MEDIUM 5.5CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:HCISA-ADP
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)
CVSS 3.1MEDIUM 5.5CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:HNVD · 134c704f-9b21-4f2e-91b3-4a467353bcc0 (Secondary)

European references

CERT-FR advisories

Affected configurations (NVD CPE)

Affected products

ProductVersions
Linux · Linuxaffected d9b0dd54a1943f47a381a474f8ea2c94466110c0 < cd2722e411e8ab7e5ae41102f6925fa13dffdac5 ; affected d9b0dd54a1943f47a381a474f8ea2c94466110c0 < d274ce4a3dfd0b9a292667535578359b865765cb ; affected d9b0dd54a1943f47a381a474f8ea2c94466110c0 < 1b915703964f7e636961df04c540261dc55c6c70 ; affected d9b0dd54a1943f47a381a474f8ea2c94466110c0 < ea6af39f3da50c86367a71eb3cc674ade3ed244c
Linux · Linuxaffected 5.12 ; unaffected 0 < 5.12 ; unaffected 5.15.33 ≤ 5.15.* ; unaffected 5.16.19 ≤ 5.16.* ; unaffected 5.17.2 ≤ 5.17.* ; unaffected 5.18 ≤ *

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