NVD Vulnerability Detail

CVE-2024-50222

Summary	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?
Publication Date	Nov. 9, 2024, 8:15 p.m.
Registration Date	Nov. 10, 2024, 5:01 a.m.
Last Update	Nov. 14, 2024, 4:23 a.m.

Affected software configurations

Related information, measures and tools

No	URL	タグ
1	https://git.kernel.org/stable/c/4f7ffa83fa79dd52efbaef366c850aaaae06a469	Patch
2	https://git.kernel.org/stable/c/3a303409f271dfe0987b8f79595138340497a32d	Patch
3	https://git.kernel.org/stable/c/c749d9b7ebbc5716af7a95f7768634b30d9446ec	Patch

Common Vulnerabilities List

JVN Vulnerability Information

Linux の Linux Kernel における脆弱性

Title	Linux の Linux Kernel における脆弱性
Summary	Linux の Linux Kernel には、不特定の脆弱性が存在します。
Possible impacts	情報を取得される、情報を改ざんされる、およびサービス運用妨害 (DoS) 状態にされる可能性があります。
Solution	ベンダより正式な対策が公開されています。ベンダ情報を参照して適切な対策を実施してください。
Publication Date	Oct. 28, 2024, midnight
Registration Date	Nov. 14, 2024, 1:50 p.m.
Last Update	Nov. 14, 2024, 1:50 p.m.

Affected System

Linux

Linux Kernel 6.12

Linux Kernel 6.6 以上 6.6.60 未満

Linux Kernel 6.7 以上 6.11.7 未満

CVE (情報セキュリティ共通脆弱性識別子)

No	Name	URL
Common Vulnerabilities and Exposures (CVE)
1	CVE-2024-50222	https://www.cve.org/CVERecord?id=CVE-2024-50222
National Vulnerability Database (NVD)
2	CVE-2024-50222	https://nvd.nist.gov/vuln/detail/CVE-2024-50222

CWE (共通脆弱性タイプ一覧)

No	Name	URL
JVNDB
1	CWE-noinfo	https://www.ipa.go.jp/security/vuln/scap/cwe.html

ベンダー情報

No	Name	URL
Kernel.org git repositories
1	iov_iter: fix copy_page_from_iter_atomic() if KMAP_LOCAL_FORCE_MAP (3a30340)	https://git.kernel.org/stable/c/3a303409f271dfe0987b8f79595138340497a32d
2	iov_iter: fix copy_page_from_iter_atomic() if KMAP_LOCAL_FORCE_MAP (4f7ffa8)	https://git.kernel.org/stable/c/4f7ffa83fa79dd52efbaef366c850aaaae06a469
3	iov_iter: fix copy_page_from_iter_atomic() if KMAP_LOCAL_FORCE_MAP (c749d9b)	https://git.kernel.org/stable/c/c749d9b7ebbc5716af7a95f7768634b30d9446ec
Linux Kernel
4	Linux Kernel Archives	https://www.kernel.org

Change Log

No	Changed Details	Date of change
1	[2024年11月14日] 掲載	Nov. 14, 2024, 10:48 a.m.