cbcvebase.
CVE-2021-46956
published 2024-02-27

CVE-2021-46956: In the Linux kernel, the following vulnerability has been resolved: virtiofs: fix memory leak in virtio_fs_probe() When accidentally passing twice the same tag…

PriorityP418medium5.5CVSS 3.1
AVLACLPRLUINSUCNINAH
EPSS
0.23%
14.1th percentile
In the Linux kernel, the following vulnerability has been resolved: virtiofs: fix memory leak in virtio_fs_probe() When accidentally passing twice the same tag to qemu, kmemleak ended up reporting a memory leak in virtiofs. Also, looking at the log I saw the following error (that's when I realised the duplicated tag): virtiofs: probe of virtio5 failed with error -17 Here's the kmemleak log for reference: unreferenced object 0xffff888103d47800 (size 1024): comm "systemd-udevd", pid 118, jiffies 4294893780 (age 18.340s) hex dump (first 32 bytes): 00 00 00 00 ad 4e ad de ff ff ff ff 00 00 00 00 .....N.......... ff ff ff ff ff ff ff ff 80 90 02 a0 ff ff ff ff ................ backtrace: [] virtio_fs_probe+0x171/0x7ae [virtiofs] [] virtio_dev_probe+0x15f/0x210 [] really_probe+0xea/0x430 [] device_driver_attach+0xa8/0xb0 [] __driver_attach+0x98/0x140 [] bus_for_each_dev+0x7b/0xc0 [] bus_add_driver+0x11b/0x1f0 [] driver_register+0x8f/0xe0 [] 0xffffffffa002c013 [] do_one_initcall+0x64/0x2e0 [] do_init_module+0x5c/0x260 [] __do_sys_finit_module+0xb5/0x120 [] do_syscall_64+0x33/0x40 [] entry_SYSCALL_64_after_hwframe+0x44/0xae

Affected

15 ranges
VendorProductVersion rangeFixed in
debianlinux< linux 5.10.38-1 (bookworm)linux 5.10.38-1 (bookworm)
linuxlinux——
linuxlinux>= a62a8ef9d97da23762a588592c8b8eb50a8deb6a < 310efc95c72c13faf855c692d19cd4d054d827c8310efc95c72c13faf855c692d19cd4d054d827c8
linuxlinux>= a62a8ef9d97da23762a588592c8b8eb50a8deb6a < d19555ff225d0896a33246a49279e6d578095f15d19555ff225d0896a33246a49279e6d578095f15
linuxlinux>= a62a8ef9d97da23762a588592c8b8eb50a8deb6a < 9b9d60c0eb8ada99cce2a9ab5c15dffc523b01ae9b9d60c0eb8ada99cce2a9ab5c15dffc523b01ae
linuxlinux>= a62a8ef9d97da23762a588592c8b8eb50a8deb6a < 5116e79fc6e6725b8acdad8b7e928a83ab7b47e65116e79fc6e6725b8acdad8b7e928a83ab7b47e6
linuxlinux>= a62a8ef9d97da23762a588592c8b8eb50a8deb6a < c79c5e0178922a9e092ec8fed026750f39dcaef4c79c5e0178922a9e092ec8fed026750f39dcaef4
linuxlinux_kernel>= 0 < 5.10.38-15.10.38-1
linuxlinux_kernel>= 0 < 5.10.38-15.10.38-1
linuxlinux_kernel>= 0 < 5.10.38-15.10.38-1
linuxlinux_kernel>= 0 < 5.10.38-15.10.38-1
linuxlinux_kernel>= 5.11 < 5.11.205.11.20
linuxlinux_kernel>= 5.12 < 5.12.35.12.3
linuxlinux_kernel>= 5.4 < 5.4.1185.4.118
linuxlinux_kernel>= 5.5 < 5.10.365.10.36

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_debian5.5MEDIUM
vendor_redhat5.5MEDIUM
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