cbcvebase.
CVE-2025-38692
published 2025-09-04

CVE-2025-38692: In the Linux kernel, the following vulnerability has been resolved: exfat: add cluster chain loop check for dir An infinite loop may occur if the following…

PriorityP421medium5.5CVSS 3.1
AVLACLPRLUINSUCNINAH
EPSS
0.14%
4.3th percentile
In the Linux kernel, the following vulnerability has been resolved: exfat: add cluster chain loop check for dir An infinite loop may occur if the following conditions occur due to file system corruption. (1) Condition for exfat_count_dir_entries() to loop infinitely. - The cluster chain includes a loop. - There is no UNUSED entry in the cluster chain. (2) Condition for exfat_create_upcase_table() to loop infinitely. - The cluster chain of the root directory includes a loop. - There are no UNUSED entry and up-case table entry in the cluster chain of the root directory. (3) Condition for exfat_load_bitmap() to loop infinitely. - The cluster chain of the root directory includes a loop. - There are no UNUSED entry and bitmap entry in the cluster chain of the root directory. (4) Condition for exfat_find_dir_entry() to loop infinitely. - The cluster chain includes a loop. - The unused directory entries were exhausted by some operation. (5) Condition for exfat_check_dir_empty() to loop infinitely. - The cluster chain includes a loop. - The unused directory entries were exhausted by some operation. - All files and sub-directories under the directory are deleted. This commit adds checks to break the above infinite loop.

Affected

25 ranges
VendorProductVersion rangeFixed in
debianlinux< linux 6.16.3-1 (forky)linux 6.16.3-1 (forky)
linuxlinux
linuxlinux>= 1acf1a564b6034b5af1e7fb23cb98cb3bb4f6003 < 868f23286c1a13162330fa6c614fe350f78e3f82868f23286c1a13162330fa6c614fe350f78e3f82
linuxlinux>= 1acf1a564b6034b5af1e7fb23cb98cb3bb4f6003 < aa8fe7b7b73d4c9a41bb96cb3fb3092f794ecb33aa8fe7b7b73d4c9a41bb96cb3fb3092f794ecb33
linuxlinux>= 1acf1a564b6034b5af1e7fb23cb98cb3bb4f6003 < e2066ca3ef49a30920d8536fa366b2a183a808eee2066ca3ef49a30920d8536fa366b2a183a808ee
linuxlinux>= 1acf1a564b6034b5af1e7fb23cb98cb3bb4f6003 < 4c3cda20c4cf1871e27868d08fda06b79bc7d5684c3cda20c4cf1871e27868d08fda06b79bc7d568
linuxlinux>= 1acf1a564b6034b5af1e7fb23cb98cb3bb4f6003 < 99f9a97dce39ad413c39b92c90393bbd6778f3fd99f9a97dce39ad413c39b92c90393bbd6778f3fd
linuxlinux_kernel>= 0 < 6.12.43-16.12.43-1
linuxlinux_kernel>= 0 < 6.16.3-16.16.3-1
linuxlinux_kernel>= 0 < 6.8.0-100.1006.8.0-100.100
linuxlinux_kernel>= 5.7 < 6.6.1036.6.103
linuxlinux_kernel>= 6.13 < 6.15.116.15.11
linuxlinux_kernel>= 6.16 < 6.16.26.16.2
linuxlinux_kernel>= 6.7 < 6.12.436.12.43
msrcazl3_kernel_6.6.96.2-1_on_azure_linux_3.0
msrccbl2_kernel_5.15.186.1-1_on_cbl_mariner_2.0
ubuntulinux-aws
ubuntulinux-aws-6.8
ubuntulinux-gkeop
ubuntulinux-nvidia
ubuntulinux-nvidia-6.8
ubuntulinux-oracle
ubuntulinux-oracle-6.8
ubuntulinux-raspi-realtime
ubuntulinux-realtime

CVSS provenance

nvdv3.15.5MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
osv5.5MEDIUM
vendor_msrc7.0HIGH
vendor_debian5.5MEDIUM
vendor_redhat5.5MEDIUM
vendor_ubuntu3.2LOW
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