cbcvebase.
CVE-2024-26947
published 2024-05-01

CVE-2024-26947: In the Linux kernel, the following vulnerability has been resolved: ARM: 9359/1: flush: check if the folio is reserved for no-mapping addresses Since commit…

PriorityP420medium5.5CVSS 3.1
AVLACLPRLUINSUCNINAH
EPSS
0.23%
13.9th percentile
In the Linux kernel, the following vulnerability has been resolved: ARM: 9359/1: flush: check if the folio is reserved for no-mapping addresses Since commit a4d5613c4dc6 ("arm: extend pfn_valid to take into account freed memory map alignment") changes the semantics of pfn_valid() to check presence of the memory map for a PFN. A valid page for an address which is reserved but not mapped by the kernel[1], the system crashed during some uio test with the following memory layout: node 0: [mem 0x00000000c0a00000-0x00000000cc8fffff] node 0: [mem 0x00000000d0000000-0x00000000da1fffff] the uio layout is:0xc0900000, 0x100000 the crash backtrace like: Unable to handle kernel paging request at virtual address bff00000 [...] CPU: 1 PID: 465 Comm: startapp.bin Tainted: G O 5.10.0 #1 Hardware name: Generic DT based system PC is at b15_flush_kern_dcache_area+0x24/0x3c LR is at __sync_icache_dcache+0x6c/0x98 [...] (b15_flush_kern_dcache_area) from (__sync_icache_dcache+0x6c/0x98) (__sync_icache_dcache) from (set_pte_at+0x28/0x54) (set_pte_at) from (remap_pfn_range+0x1a0/0x274) (remap_pfn_range) from (uio_mmap+0x184/0x1b8 [uio]) (uio_mmap [uio]) from (__mmap_region+0x264/0x5f4) (__mmap_region) from (__do_mmap_mm+0x3ec/0x440) (__do_mmap_mm) from (do_mmap+0x50/0x58) (do_mmap) from (vm_mmap_pgoff+0xfc/0x188) (vm_mmap_pgoff) from (ksys_mmap_pgoff+0xac/0xc4) (ksys_mmap_pgoff) from (ret_fast_syscall+0x0/0x5c) Code: e0801001 e2423001 e1c00003 f57ff04f (ee070f3e) ---[ end trace 09cf0734c3805d52 ]--- Kernel panic - not syncing: Fatal exception So check if PG_reserved was set to solve this issue. [1]: https://lore.kernel.org/lkml/[email protected]/

Affected

30 ranges· showing 25
VendorProductVersion rangeFixed in
debianlinux< linux 6.7.12-1 (forky)linux 6.7.12-1 (forky)
linuxlinux
linuxlinux
linuxlinux
linuxlinux>= 5.10.87 < 5.115.11
linuxlinux>= 5.4.167 < 5.55.5
linuxlinux>= a4d5613c4dc6d413e0733e37db9d116a2a36b9f3 < 0c027c2bad7f5111c51a358b5d392e1a695dabff0c027c2bad7f5111c51a358b5d392e1a695dabff
linuxlinux>= a4d5613c4dc6d413e0733e37db9d116a2a36b9f3 < 9f7ddc222cae8254e93d5c169a8ae11a49d912a79f7ddc222cae8254e93d5c169a8ae11a49d912a7
linuxlinux>= a4d5613c4dc6d413e0733e37db9d116a2a36b9f3 < fb3a122a978626b33de3367ee1762da934c0f512fb3a122a978626b33de3367ee1762da934c0f512
linuxlinux>= a4d5613c4dc6d413e0733e37db9d116a2a36b9f3 < 0c66c6f4e21cb22220cbd8821c5c73fc157d20dc0c66c6f4e21cb22220cbd8821c5c73fc157d20dc
linuxlinux_kernel>= 0 < 6.7.12-16.7.12-1
linuxlinux_kernel>= 0 < 6.7.12-16.7.12-1
linuxlinux_kernel>= 0 < 5.4.0-202.2225.4.0-202.222
linuxlinux_kernel>= 0 < 5.15.0-127.1375.15.0-127.137
linuxlinux_kernel>= 0 < 6.8.0-35.356.8.0-35.35
linuxlinux_kernel>= 5.10.87 < 5.115.11
linuxlinux_kernel>= 5.14 < 6.6.246.6.24
linuxlinux_kernel>= 5.4.167 < 5.55.5
linuxlinux_kernel>= 6.7 < 6.7.126.7.12
linuxlinux_kernel>= 6.8 < 6.8.36.8.3
msrcazl3_hyperv-daemons_6.6.22.1-2_on_azure_linux_3.0
msrcazl3_hyperv-daemons_6.6.35.1-1_on_azure_linux_3.0
msrcazure_linux_3.0_arm
msrcazure_linux_3.0_x64
msrccbl2_hyperv-daemons_5.15.180.1-1_on_cbl_mariner_2.0

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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