CVE-2021-47432

Description

In the Linux kernel, the following vulnerability has been resolved: lib/generic-radix-tree.c: Don't overflow in peek() When we started spreading new inode numbers throughout most of the 64 bit inode space, that triggered some corner case bugs, in particular some integer overflows related to the radix tree code. Oops.

CVSS Metrics

• v3.1•MEDIUM•Score: 5.5CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

EPSS Trends

Current EPSS score: 0.01%• Percentile: 1%

Techniques & Countermeasures

• CWE-190•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.

Affected Systems

• linux•linux

  ≥ ba20ba2e3743bac786dff777954c11930256075e, < 784d01f9bbc282abb0c5ade5beb98a87f50343ac | ≥ ba20ba2e3743bac786dff777954c11930256075e, < ec298b958cb0c40d70c68079da933c8f31c5134c | ≥ ba20ba2e3743bac786dff777954c11930256075e, < aa7f1827953100cdde0795289a80c6c077bfe437 | ≥ ba20ba2e3743bac786dff777954c11930256075e, < 9492261ff2460252cf2d8de89cdf854c7e2b28a0 | 5.1

• linux•linux_kernel

  < 6.1.64 | ≥ 6.2, < 6.5.13 | ≥ 6.6, < 6.6.3

References (4)

• https://git.kernel.org/stable/c/784d01f9bbc282abb0c5ade5beb98a87f50343ac
• https://git.kernel.org/stable/c/ec298b958cb0c40d70c68079da933c8f31c5134c
• https://git.kernel.org/stable/c/aa7f1827953100cdde0795289a80c6c077bfe437
• https://git.kernel.org/stable/c/9492261ff2460252cf2d8de89cdf854c7e2b28a0