CVE-2024-50222

HIGH EPSS 15.2%
Published Nov 9, 20241y ago · Modified Jun 17, 20261w ago
7.8 CVSS 3.1
High
Find Similar
Published Nov 9, 2024 1y ago
Last Modified Jun 17, 2026 1w ago

Description

In the Linux kernel, the following vulnerability has been resolved: iov_iter: fix copy_page_from_iter_atomic() if KMAP_LOCAL_FORCE_MAP generic/077 on x86_32 CONFIG_DEBUG_KMAP_LOCAL_FORCE_MAP=y with highmem, on huge=always tmpfs, issues a warning and then hangs (interruptibly): WARNING: CPU: 5 PID: 3517 at mm/highmem.c:622 kunmap_local_indexed+0x62/0xc9 CPU: 5 UID: 0 PID: 3517 Comm: cp Not tainted 6.12.0-rc4 #2 ... copy_page_from_iter_atomic+0xa6/0x5ec generic_perform_write+0xf6/0x1b4 shmem_file_write_iter+0x54/0x67 Fix copy_page_from_iter_atomic() by limiting it in that case (include/linux/skbuff.h skb_frag_must_loop() does similar). But going forward, perhaps CONFIG_DEBUG_KMAP_LOCAL_FORCE_MAP is too surprising, has outlived its usefulness, and should just be removed?

CVSS Details

Base Score
7.8
Exploitability
1.8
Impact
5.9
Vector string
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack Vector Local
Attack Complexity Low
Privileges Required Low
User Interaction None
Scope Unchanged
Confidentiality High
Integrity High
Availability High

Threat Intelligence

EPSS Exploit Probability
15.2% percentile
Exploit & Patch Status
No Known Exploit
Patch Available

Affected Products 7

VendorProductVersionRange
linuxlinux_kernel*≥6.6  –  <6.6.60
linuxlinux_kernel*≥6.7  –  <6.11.7
linuxlinux_kernel6.12any
linuxlinux_kernel6.12any
linuxlinux_kernel6.12any
linuxlinux_kernel6.12any
linuxlinux_kernel6.12any

References 3

  • git.kernel.org https://git.kernel.org/stable/c/3a303409f271dfe0987b8f79595138340497a32d
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/4f7ffa83fa79dd52efbaef366c850aaaae06a469
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/c749d9b7ebbc5716af7a95f7768634b30d9446ec
    Patch

Remediation

  • git.kernel.org https://git.kernel.org/stable/c/3a303409f271dfe0987b8f79595138340497a32d
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/4f7ffa83fa79dd52efbaef366c850aaaae06a469
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/c749d9b7ebbc5716af7a95f7768634b30d9446ec
    Patch