CyberSecBulletin
CVE-2022-25656NVD status: Modified

Snapdragon Auto, Snapdragon Compute…: Integer Overflow or Wraparound

Published Updated By the CyberSecBulletin desk

CVE-2022-25656 is a high-severity integer overflow or wraparound vulnerability in Snapdragon Auto, Snapdragon Compute, Snapdragon Connectivity, Snapdragon Industrial IOT, Snapdragon Mobile, Snapdragon Wearables from Qualcomm, with a CVSS 3.1 base score of 7.8 out of 10. It can be exploited with local access to the system by an attacker with a low-privileged account, without any action from a user. There is no confirmed exploitation so far. EPSS estimates a 0.13% chance of exploitation within 30 days, which is low compared with other CVEs.

Next patch cycle

High severity with no evidence of exploitation so far.

What to do

  1. Check which version of Snapdragon Auto, Snapdragon Compute, Snapdragon Connectivity, Snapdragon Industrial IOT, Snapdragon Mobile, Snapdragon Wearables you run against the affected versions below, and install the vendor's latest release.
  2. Read the advisory on qualcomm.com for workarounds and exact fixed builds.

Affected products and versions

VendorProductAffected versionsFixed in
QualcommSnapdragon Auto, Snapdragon Compute, Snapdragon Connectivity, Snapdragon Industrial IOT, Snapdragon Mobile, Snapdragon WearablesNot specified in the recordNot stated
QualcommAr8035 FirmwareNot specified in the recordNot stated
QualcommQca6174a FirmwareNot specified in the recordNot stated
QualcommQca6390 FirmwareNot specified in the recordNot stated
QualcommQca6391 FirmwareNot specified in the recordNot stated
QualcommQca6426 FirmwareNot specified in the recordNot stated
QualcommQca6436 FirmwareNot specified in the recordNot stated
QualcommQca6574 FirmwareNot specified in the recordNot stated
QualcommQca6574a FirmwareNot specified in the recordNot stated
QualcommQca6574au FirmwareNot specified in the recordNot stated
QualcommQca6595au FirmwareNot specified in the recordNot stated
QualcommQca6696 FirmwareNot specified in the recordNot stated
QualcommQca8081 FirmwareNot specified in the recordNot stated
QualcommQca8337 FirmwareNot specified in the recordNot stated
QualcommQca9377 FirmwareNot specified in the recordNot stated
QualcommQcm6490 FirmwareNot specified in the recordNot stated
QualcommQcs6490 FirmwareNot specified in the recordNot stated
QualcommSa6155p FirmwareNot specified in the recordNot stated
QualcommSa8155p FirmwareNot specified in the recordNot stated
QualcommSa8195p FirmwareNot specified in the recordNot stated
QualcommSd 8 Gen1 5g FirmwareNot specified in the recordNot stated
QualcommSd460 FirmwareNot specified in the recordNot stated
QualcommSd480 FirmwareNot specified in the recordNot stated
QualcommSd695 FirmwareNot specified in the recordNot stated
QualcommSd778g FirmwareNot specified in the recordNot stated

Version data comes from the organisation that assigned the CVE; 35 further products are omitted here. Confirm against the vendor advisory before deciding you are unaffected.

How the severity score breaks down

Attack vector
LocalThe attacker needs local access or must trick a user into running something.
Attack complexity
LowNo special conditions are needed; the attack works reliably.
Privileges required
LowA basic user account is enough.
User interaction
NoneNo action by a victim is required.
Scope
UnchangedImpact stays within the vulnerable component.
Confidentiality
HighAll data handled by the component can be read.
Integrity
HighData or code can be modified at will.
Availability
HighThe component can be taken down completely.

Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H. Scored by NVD.

Scoring systemScoreSeverityScored by
CVSS 3.18.4HighCNA (qualcomm.com)
CVSS 3.17.8HighNVD

Official description

Possible integer overflow and memory corruption due to improper validation of buffer size sent to write to console when computing the payload size in Snapdragon Auto, Snapdragon Compute, Snapdragon Connectivity, Snapdragon Industrial IOT, Snapdragon Mobile, Snapdragon Wearables

Source: the CVE record as published by its numbering authority, via NVD and CVE.org.

The underlying weakness: Integer Overflow or Wraparound

The product performs a calculation that can produce an integer overflow or wraparound when the logic assumes that the resulting value will always be larger than the original value. This occurs when an integer value is incremented to a value that is too large to store in the associated representation. When this occurs, the value may become a very small or negative number.

How developers prevent this class of flaw

  • Ensure that all protocols are strictly defined, such that all out-of-bounds behavior can be identified simply, and require strict conformance to the protocol.
  • Use a language that does not allow this weakness to occur or provides constructs that make this weakness easier to avoid. If possible, choose a language or compiler that performs automatic bounds checking.
  • Use a vetted library or framework that does not allow this weakness to occur or provides constructs that make this weakness easier to avoid. Use libraries or frameworks that make it easier to handle numbers without unexpected consequences. Examples include safe integer handling packages such as SafeInt (C++) or IntegerLib (C or C++).

More Integer Overflow or Wraparound vulnerabilities (CWE-190)

Timeline

  1. CVE record published.
  2. Record last changed materially (score, affected products, status or references).

References

Other vulnerabilities in Snapdragon Auto, Snapdragon Compute, Snapdragon Connectivity, Snapdragon Industrial IOT, Snapdragon Mobile, Snapdragon Wearables

All Snapdragon Auto, Snapdragon Compute, Snapdragon Connectivity, Snapdragon Industrial IOT, Snapdragon Mobile, Snapdragon Wearables vulnerabilities

Recent Integer Overflow or Wraparound vulnerabilities

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