cbcvebase.
CVE-2024-26840
published 2024-04-17

CVE-2024-26840: In the Linux kernel, the following vulnerability has been resolved: cachefiles: fix memory leak in cachefiles_add_cache() The following memory leak was…

PriorityP418medium5.5CVSS 3.1
AVLACLPRLUINSUCNINAH
EPSS
0.28%
20.1th percentile
In the Linux kernel, the following vulnerability has been resolved: cachefiles: fix memory leak in cachefiles_add_cache() The following memory leak was reported after unbinding /dev/cachefiles: unreferenced object 0xffff9b674176e3c0 (size 192): comm "cachefilesd2", pid 680, jiffies 4294881224 hex dump (first 32 bytes): 01 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ backtrace (crc ea38a44b): [] kmem_cache_alloc+0x2d5/0x370 [] prepare_creds+0x26/0x2e0 [] cachefiles_determine_cache_security+0x1f/0x120 [] cachefiles_add_cache+0x13c/0x3a0 [] cachefiles_daemon_write+0x146/0x1c0 [] vfs_write+0xcb/0x520 [] ksys_write+0x69/0xf0 [] do_syscall_64+0x72/0x140 [] entry_SYSCALL_64_after_hwframe+0x6e/0x76 Put the reference count of cache_cred in cachefiles_daemon_unbind() to fix the problem. And also put cache_cred in cachefiles_add_cache() error branch to avoid memory leaks.

Affected

25 ranges
VendorProductVersion rangeFixed in
debianlinux< linux 6.1.82-1 (bookworm)linux 6.1.82-1 (bookworm)
linuxlinux
linuxlinux>= 9ae326a69004dea8af2dae4fde58de27db700a8d < cb5466783793e66272624cf71925ae1d1ba32083cb5466783793e66272624cf71925ae1d1ba32083
linuxlinux>= 9ae326a69004dea8af2dae4fde58de27db700a8d < 037d5a949b0455540ef9aab34c10ddf54b65d285037d5a949b0455540ef9aab34c10ddf54b65d285
linuxlinux>= 9ae326a69004dea8af2dae4fde58de27db700a8d < 43eccc5823732ba6daab2511ed32dfc545a666d843eccc5823732ba6daab2511ed32dfc545a666d8
linuxlinux>= 9ae326a69004dea8af2dae4fde58de27db700a8d < 94965be37add0983672e48ecb33cdbda92b6257994965be37add0983672e48ecb33cdbda92b62579
linuxlinux>= 9ae326a69004dea8af2dae4fde58de27db700a8d < 8b218e2f0a27a9f09428b1847b4580640b9d1e588b218e2f0a27a9f09428b1847b4580640b9d1e58
linuxlinux>= 9ae326a69004dea8af2dae4fde58de27db700a8d < 38e921616320d159336b0ffadb09e9fb4945c7c338e921616320d159336b0ffadb09e9fb4945c7c3
linuxlinux>= 9ae326a69004dea8af2dae4fde58de27db700a8d < 9cac69912052a4def571fedf1cb9bb4ec590e25a9cac69912052a4def571fedf1cb9bb4ec590e25a
linuxlinux>= 9ae326a69004dea8af2dae4fde58de27db700a8d < e21a2f17566cbd64926fb8f16323972f7a064444e21a2f17566cbd64926fb8f16323972f7a064444
linuxlinux_kernel
linuxlinux_kernel>= 0 < 5.10.216-15.10.216-1
linuxlinux_kernel>= 0 < 6.1.82-16.1.82-1
linuxlinux_kernel>= 0 < 6.7.7-16.7.7-1
linuxlinux_kernel>= 0 < 6.7.7-16.7.7-1
linuxlinux_kernel>= 0 < 5.4.0-186.2065.4.0-186.206
linuxlinux_kernel>= 0 < 5.15.0-112.1225.15.0-112.122
linuxlinux_kernel>= 0 < 4.4.0-257.2914.4.0-257.291
linuxlinux_kernel>= 2.6.30 < 4.19.3094.19.309
linuxlinux_kernel>= 4.20 < 5.4.2715.4.271
linuxlinux_kernel>= 5.11 < 5.15.1515.15.151
linuxlinux_kernel>= 5.16 < 6.1.806.1.80
linuxlinux_kernel>= 5.5 < 5.10.2125.10.212
linuxlinux_kernel>= 6.2 < 6.6.196.6.19
linuxlinux_kernel>= 6.7 < 6.7.76.7.7

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_redhat5.5MEDIUM
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