nfs_lookup_reply in net/nfs.c in Das U-Boot through 2022.04 (and through 2022.07-rc2) has an unbounded memcpy with a failed length check, le

Affected versions

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

• denx u-bootup to 2022.04 inclusive
• denx u-boot2022.07
• fedoraproject fedora36

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

Other highest-scoring records for the same primary product.

• CVE-2022-34835In Das U-Boot through 2022.07-rc5, an integer signedness error and resultant stack-based buffer overflow in the "i2c md" command enables the
  40Plan
• CVE-2020-8432In Das U-Boot through 2020.01, a double free has been found in the cmd/gpt.c do_rename_gpt_parts() function.
  40Plan
• CVE-2019-14204An issue was discovered in Das U-Boot through 2019.07.
  40Plan

Published before and after this one in the same product

• ← EarlierCVE-2021-27097Feb 17, 2021 · The boot loader in Das U-Boot before 2021.04-rc2 mishandles a modified FIT.
  31Monitor
• ← EarlierCVE-2021-27138Feb 17, 2021 · The boot loader in Das U-Boot before 2021.04-rc2 mishandles use of unit addresses in a FIT.
  31Monitor
• Later →CVE-2022-30552Jun 8, 2022 · Das U-Boot 2022.01 has a Buffer Overflow.
  22Monitor

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.