CVE-2024-42265

MEDIUM EPSS 19.9%
Published Aug 17, 20241y ago · Modified Jun 17, 20261w ago
5.5 CVSS 3.1
Medium
Find Similar
Published Aug 17, 2024 1y ago
Last Modified Jun 17, 2026 1w ago

Description

In the Linux kernel, the following vulnerability has been resolved: protect the fetch of ->fd[fd] in do_dup2() from mispredictions both callers have verified that fd is not greater than ->max_fds; however, misprediction might end up with tofree = fdt->fd[fd]; being speculatively executed. That's wrong for the same reasons why it's wrong in close_fd()/file_close_fd_locked(); the same solution applies - array_index_nospec(fd, fdt->max_fds) could differ from fd only in case of speculative execution on mispredicted path.

CVSS Details

Base Score
5.5
Exploitability
1.8
Impact
3.6
Vector string
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Attack Vector Local
Attack Complexity Low
Privileges Required Low
User Interaction None
Scope Unchanged
Confidentiality None
Integrity None
Availability High

Threat Intelligence

EPSS Exploit Probability
19.9% percentile
Exploit & Patch Status
No Known Exploit
Patch Available

Affected Products 8

VendorProductVersionRange
linuxlinux_kernel* <4.19.320
linuxlinux_kernel*≥4.20  –  <5.4.282
linuxlinux_kernel*≥5.5  –  <5.10.224
linuxlinux_kernel*≥5.11  –  <5.15.165
linuxlinux_kernel*≥5.16  –  <6.1.104
linuxlinux_kernel*≥6.2  –  <6.6.45
linuxlinux_kernel*≥6.7  –  <6.10.4
linuxlinux_kernel6.11any

References 11

  • cert-portal.siemens.com https://cert-portal.siemens.com/productcert/html/ssa-265688.html
  • git.kernel.org https://git.kernel.org/stable/c/08775b3d6ed117cf4518754ec7300ee42b6a5368
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/1171ceccabfd596ca370c5d2cbb47d110c3f2fe1
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/3f480493550b6a23d3a65d095d6569d4a7f56a0f
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/41a6c31df77bd8e050136b0a200b537da9e1084a
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/5db999fff545b924b24c9afd368ef5c17279b176
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/8aa37bde1a7b645816cda8b80df4753ecf172bf1
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/da72e783afd27d9f487836b2e6738146c0edd149
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/ed42e8ff509d2a61c6642d1825032072dab79f26
    Patch
  • lists.debian.org https://lists.debian.org/debian-lts-announce/2024/10/msg00003.html
  • lists.debian.org https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html

Remediation

  • git.kernel.org https://git.kernel.org/stable/c/08775b3d6ed117cf4518754ec7300ee42b6a5368
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/1171ceccabfd596ca370c5d2cbb47d110c3f2fe1
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/3f480493550b6a23d3a65d095d6569d4a7f56a0f
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/41a6c31df77bd8e050136b0a200b537da9e1084a
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/5db999fff545b924b24c9afd368ef5c17279b176
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/8aa37bde1a7b645816cda8b80df4753ecf172bf1
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/da72e783afd27d9f487836b2e6738146c0edd149
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/ed42e8ff509d2a61c6642d1825032072dab79f26
    Patch