CVE-2024-50222
highpriority · track · 31EPSS 0.002 · 14 %ileDEEURUUSEPSS · scored 2026-10-27
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
Technical severity, 0–10. One row per scoring source.
base score 0–10 · higher = more severe · hover a vector to decode
ssvc
A stakeholder decision — act, attend, or track — from exploitation and impact.
weaknesses
The CWE weakness classes this flaw belongs to.
affected products (36)
Products and version ranges known to be affected.
advisories (1)
Vendor and ecosystem advisories describing this.
- WID-SEC-W-2024-3397Linux Kernel: Mehrere Schwachstellen ermöglichen nicht spezifizierten AngriffDeutsch2024-11-10csaf · cert_bundDE
Ein lokaler Angreifer kann mehrere Schwachstellen im Linux Kernel ausnutzen, um einen nicht näher spezifizierten Angriff durchzuführen.
also known as (4)
Other names and identifiers for this entity.
sources
Which sources assert this record, and when.
references (9)
External citations — patches, advisories, analysis.
- https://git.kernel.org/stable/c/3a303409f271dfe0987b8f79595138340497a32dcnnvd
- https://git.kernel.org/stable/c/4f7ffa83fa79dd52efbaef366c850aaaae06a469cnnvd
- https://git.kernel.org/stable/c/c749d9b7ebbc5716af7a95f7768634b30d9446eccnnvd
- https://git.kernel.org/stable/c/3a303409f271dfe0987b8f79595138340497a32denisa_euvd
- https://git.kernel.org/stable/c/4f7ffa83fa79dd52efbaef366c850aaaae06a469enisa_euvd
- https://git.kernel.org/stable/c/c749d9b7ebbc5716af7a95f7768634b30d9446ecenisa_euvd
- https://git.kernel.org/stable/c/3a303409f271dfe0987b8f79595138340497a32dPatchnvd
- https://git.kernel.org/stable/c/4f7ffa83fa79dd52efbaef366c850aaaae06a469Patchnvd
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