cbcvebase.
CVE-2024-44965
published 2024-09-04

CVE-2024-44965: In the Linux kernel, the following vulnerability has been resolved: x86/mm: Fix pti_clone_pgtable() alignment assumption Guenter reported dodgy crashes on an…

PriorityP420medium5.5CVSS 3.1
AVLACLPRLUINSUCNINAH
EPSS
0.22%
13.2th percentile
In the Linux kernel, the following vulnerability has been resolved: x86/mm: Fix pti_clone_pgtable() alignment assumption Guenter reported dodgy crashes on an i386-nosmp build using GCC-11 that had the form of endless traps until entry stack exhaust and then #DF from the stack guard. It turned out that pti_clone_pgtable() had alignment assumptions on the start address, notably it hard assumes start is PMD aligned. This is true on x86_64, but very much not true on i386. These assumptions can cause the end condition to malfunction, leading to a 'short' clone. Guess what happens when the user mapping has a short copy of the entry text? Use the correct increment form for addr to avoid alignment assumptions.

Affected

30 ranges· showing 25
VendorProductVersion rangeFixed in
debianlinux< linux 6.1.106-1 (bookworm)linux 6.1.106-1 (bookworm)
debianlinux-6.1< linux 6.1.106-1 (bookworm)linux 6.1.106-1 (bookworm)
linuxlinux
linuxlinux>= 16a3fe634f6a568c6234b8747e5d50487fed3526 < 18da1b27ce16a14a9b636af9232acb4fb24f4c9e18da1b27ce16a14a9b636af9232acb4fb24f4c9e
linuxlinux>= 16a3fe634f6a568c6234b8747e5d50487fed3526 < 25a727233a40a9b33370eec9f0cad67d8fd312f825a727233a40a9b33370eec9f0cad67d8fd312f8
linuxlinux>= 16a3fe634f6a568c6234b8747e5d50487fed3526 < d00c9b4bbc442d99e1dafbdfdab848bc1ead73f6d00c9b4bbc442d99e1dafbdfdab848bc1ead73f6
linuxlinux>= 16a3fe634f6a568c6234b8747e5d50487fed3526 < 4d143ae782009b43b4f366402e5c37f59d4e43464d143ae782009b43b4f366402e5c37f59d4e4346
linuxlinux>= 16a3fe634f6a568c6234b8747e5d50487fed3526 < 5c580c1050bcbc15c3e78090859d798dcf8c97635c580c1050bcbc15c3e78090859d798dcf8c9763
linuxlinux>= 16a3fe634f6a568c6234b8747e5d50487fed3526 < ca07aab70dd3b5e7fddb62d7a6ecd7a7d6d0b2edca07aab70dd3b5e7fddb62d7a6ecd7a7d6d0b2ed
linuxlinux>= 16a3fe634f6a568c6234b8747e5d50487fed3526 < df3eecb5496f87263d171b254ca6e2758ab3c35cdf3eecb5496f87263d171b254ca6e2758ab3c35c
linuxlinux>= 16a3fe634f6a568c6234b8747e5d50487fed3526 < 41e71dbb0e0a0fe214545fe64af031303a08524c41e71dbb0e0a0fe214545fe64af031303a08524c
linuxlinux_kernel
linuxlinux_kernel>= 0 < 5.10.226-15.10.226-1
linuxlinux_kernel>= 0 < 6.1.106-16.1.106-1
linuxlinux_kernel>= 0 < 6.10.6-16.10.6-1
linuxlinux_kernel>= 0 < 6.10.6-16.10.6-1
linuxlinux_kernel>= 0 < 5.4.0-200.2205.4.0-200.220
linuxlinux_kernel>= 0 < 5.15.0-125.1355.15.0-125.135
linuxlinux_kernel>= 0 < 6.8.0-50.516.8.0-50.51
linuxlinux_kernel>= 4.19 < 4.19.3204.19.320
linuxlinux_kernel>= 4.20 < 5.4.2825.4.282
linuxlinux_kernel>= 5.11 < 5.15.1655.15.165
linuxlinux_kernel>= 5.16 < 6.1.1056.1.105
linuxlinux_kernel>= 5.5 < 5.10.2245.10.224
linuxlinux_kernel>= 6.2 < 6.6.466.6.46

CVSS provenance

nvdv3.15.5MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
osv8.8HIGH
vendor_ubuntu8.8HIGH
vendor_debian5.5MEDIUM
vendor_msrc5.5MEDIUM
vendor_redhat5.5MEDIUM
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