cbcvebase.
CVE-2024-50222
published 2024-11-09

CVE-2024-50222: 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…

PriorityP337high7.8CVSS 3.1
AVLACLPRLUINSUCHIHAH
EPSS
0.24%
15.5th percentile
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?

Affected

14 ranges
VendorProductVersion rangeFixed in
debianlinux< linux 6.11.7-1 (forky)linux 6.11.7-1 (forky)
linuxlinux
linuxlinux>= 908a1ad89466c1febf20bfe0037b84fc66f8a3f8 < 4f7ffa83fa79dd52efbaef366c850aaaae06a4694f7ffa83fa79dd52efbaef366c850aaaae06a469
linuxlinux>= 908a1ad89466c1febf20bfe0037b84fc66f8a3f8 < 3a303409f271dfe0987b8f79595138340497a32d3a303409f271dfe0987b8f79595138340497a32d
linuxlinux>= 908a1ad89466c1febf20bfe0037b84fc66f8a3f8 < c749d9b7ebbc5716af7a95f7768634b30d9446ecc749d9b7ebbc5716af7a95f7768634b30d9446ec
linuxlinux_kernel
linuxlinux_kernel>= 0 < 6.11.7-16.11.7-1
linuxlinux_kernel>= 0 < 6.11.7-16.11.7-1
linuxlinux_kernel>= 0 < 6.8.0-58.606.8.0-58.60
linuxlinux_kernel>= 0 < 6.11.0-18.186.11.0-18.18
linuxlinux_kernel>= 6.6 < 6.6.606.6.60
linuxlinux_kernel>= 6.7 < 6.11.76.11.7
msrcazl3_kernel_6.6.57.1-7_on_azure_linux_3.0
msrcazl3_kernel_6.6.64.2-1_on_azure_linux_3.0

CVSS provenance

nvdv3.17.8HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
osv8.8HIGH
vendor_ubuntu8.8HIGH
vendor_debian7.8LOW
vendor_msrc7.8HIGH
vendor_redhat7.8HIGH
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