Kernel memory error in debug module due to improper check of user data length before copying into memory in Snapdragon Auto, Snapdragon Cons

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

• qualcomm apq8096au firmwareall versions
• qualcomm apq8098 firmwareall versions
• qualcomm msm8996au firmwareall versions
• qualcomm qcn7605 firmwareall versions
• qualcomm sdm439 firmwareall versions
• qualcomm sdx24 firmwareall versions
• qualcomm sm8150 firmwareall versions

Versions reported by the vendor

Affected version ranges reported by the assigning authority (qualcomm). Independent of NVD's CPE analysis and usually ahead of it.

• Qualcomm, Inc. Snapdragon Auto, Snapdragon Consumer Electronics Connectivity, Snapdragon Consumer IOT, Snapdragon Industrial IOT, Snapdragon Mobile

  • APQ8096AU, APQ8098, MSM8996AU, QCN7605, SDM439, SDX24, SM8150affected

Other highest-scoring records for the same primary product.

• CVE-2019-14045Possible buffer overflow while processing clientlog and serverlog due to lack of validation of data received in logs in Snapdragon Auto, Sna
  39Monitor
• CVE-2021-35117An Out of Bounds read may potentially occur while processing an IBSS beacon, in Snapdragon Auto, Snapdragon Compute, Snapdragon Connectivity
  36Monitor
• CVE-2020-11126Possible out of bound read while WLAN frame parsing due to lack of check for body and header length in Snapdragon Auto, Snapdragon Compute,
  36Monitor
• CVE-2022-33280Access of uninitialized pointer in Bluetooth HOST
  35Monitor
• CVE-2023-21654Improper Restriction of Operations within the Bounds of a Memory Buffer in Audio
  31Monitor
• CVE-2023-21649Buffer Copy Without Checking Size of Input (`Classic Buffer Overflow`) in WLAN
  31Monitor

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Root cause

When data is copied, the source length is not compared with the size of the destination buffer. Excess data overwrites adjacent memory.

A representative example of this vulnerability class. Not the vendor's source code; it shows the faulty pattern and its fix.

1char buf[256];2memcpy(buf, pkt->data, pkt->len);

1char buf[256];2if (pkt->len > sizeof(buf)) {3  return -EINVAL;4}5memcpy(buf, pkt->data, pkt->len);

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.