cbcvebase.
CVE-2024-42315
published 2024-08-17

CVE-2024-42315: In the Linux kernel, the following vulnerability has been resolved: exfat: fix potential deadlock on __exfat_get_dentry_set When accessing a file with more…

PriorityP418medium5.5CVSS 3.1
AVLACLPRLUINSUCNINAH
EPSS
0.17%
6.3th percentile
In the Linux kernel, the following vulnerability has been resolved: exfat: fix potential deadlock on __exfat_get_dentry_set When accessing a file with more entries than ES_MAX_ENTRY_NUM, the bh-array is allocated in __exfat_get_entry_set. The problem is that the bh-array is allocated with GFP_KERNEL. It does not make sense. In the following cases, a deadlock for sbi->s_lock between the two processes may occur. CPU0 CPU1 ---- ---- kswapd balance_pgdat lock(fs_reclaim) exfat_iterate lock(&sbi->s_lock) exfat_readdir exfat_get_uniname_from_ext_entry exfat_get_dentry_set __exfat_get_dentry_set kmalloc_array ... lock(fs_reclaim) ... evict exfat_evict_inode lock(&sbi->s_lock) To fix this, let's allocate bh-array with GFP_NOFS.

Affected

23 ranges
VendorProductVersion rangeFixed in
debianlinux< linux 6.1.123-1 (bookworm)linux 6.1.123-1 (bookworm)
debianlinux-6.1< linux 6.1.123-1 (bookworm)linux 6.1.123-1 (bookworm)
linuxlinux
linuxlinux>= 5.10.190 < 5.10.2325.10.232
linuxlinux>= 5.15.150 < 5.15.1755.15.175
linuxlinux>= 92dcd7d6c6068bf4fd35a6f64d606e27d634807e < c052f775ee6ccacd3c97e4cf41a2a657e63d4259c052f775ee6ccacd3c97e4cf41a2a657e63d4259
linuxlinux>= a3ff29a95fde16906304455aa8c0bd84eb770258 < a7ac198f8dba791e3144c4da48a5a9b95773ee4ba7ac198f8dba791e3144c4da48a5a9b95773ee4b
linuxlinux>= a3ff29a95fde16906304455aa8c0bd84eb770258 < 1d1970493c289e3f44b9ec847ed26a5dbdf56a621d1970493c289e3f44b9ec847ed26a5dbdf56a62
linuxlinux>= a3ff29a95fde16906304455aa8c0bd84eb770258 < 89fc548767a2155231128cb98726d6d2ea1256c989fc548767a2155231128cb98726d6d2ea1256c9
linuxlinux>= bd3bdb9e0d656f760b11d0c638d35d7f7068144d < 632fb232b6bbf8277edcbe9ecd4b4d98ecb122eb632fb232b6bbf8277edcbe9ecd4b4d98ecb122eb
linuxlinux>= d8fe01ad2d8ab33aaf8f2efad9e8f1dae11c4b0c < cd1c7858641384191ff7033fb1fc65dfcd559c6fcd1c7858641384191ff7033fb1fc65dfcd559c6f
linuxlinux_kernel>= 0 < 5.10.234-15.10.234-1
linuxlinux_kernel>= 0 < 6.1.123-16.1.123-1
linuxlinux_kernel>= 0 < 6.10.3-16.10.3-1
linuxlinux_kernel>= 0 < 6.10.3-16.10.3-1
linuxlinux_kernel>= 0 < 5.15.0-135.1465.15.0-135.146
linuxlinux_kernel>= 0 < 6.8.0-50.516.8.0-50.51
linuxlinux_kernel>= 6.2 < 6.6.446.6.44
linuxlinux_kernel>= 6.7 < 6.10.36.10.3
msrcazl3_kernel_6.6.43.1-7_on_azure_linux_3.0
msrcazl3_kernel_6.6.47.1-1_on_azure_linux_3.0
msrcazure_linux_3.0_arm
msrcazure_linux_3.0_x64

CVSS provenance

nvdv3.15.5MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
osv7.8HIGH
vendor_ubuntu7.8HIGH
vendor_debian5.5MEDIUM
vendor_msrc5.5MEDIUM
vendor_redhat5.5MEDIUM
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