CVE-2021-28964
MEDIUMLinux Kernel < 5.11.8 - Denial of Service via Race Condition in Btrfs get_old_root
Title source: llmDescription
A race condition was discovered in get_old_root in fs/btrfs/ctree.c in the Linux kernel through 5.11.8. It allows attackers to cause a denial of service (BUG) because of a lack of locking on an extent buffer before a cloning operation, aka CID-dbcc7d57bffc.
References (7)
Core 7
Core References
Mailing List, Vendor Advisory x_refsource_misc
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=dbcc7d57bffc0c8cac9dac11bec548597d59a6a5
Mailing List, Third Party Advisory vendor-advisory
x_refsource_fedora
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/PTRNPQTZ4GVS46SZ4OBXY5YDOGVPSTGQ/
Mailing List, Third Party Advisory vendor-advisory
x_refsource_fedora
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/4VCKIOXCOZGXBEZMO5LGGV5MWCHO6FT3/
Mailing List, Third Party Advisory vendor-advisory
x_refsource_fedora
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/T2S3I4SLRNRUQDOFYUS6IUAZMQNMPNLG/
Third Party Advisory x_refsource_confirm
https://security.netapp.com/advisory/ntap-20210430-0003/
Mailing List, Third Party Advisory mailing-list
x_refsource_mlist
https://lists.debian.org/debian-lts-announce/2021/06/msg00020.html
Mailing List, Third Party Advisory mailing-list
x_refsource_mlist
https://lists.debian.org/debian-lts-announce/2021/06/msg00019.html
Scores
CVSS v3
4.7
EPSS
0.0009
EPSS Percentile
24.6%
Attack Vector
LOCAL
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H
Details
CWE
CWE-362
Status
published
Products (9)
debian/debian_linux
9.0
fedoraproject/fedora
32
fedoraproject/fedora
33
fedoraproject/fedora
34
linux/linux_kernel
< 5.11.8
netapp/aff_a250_firmware
netapp/cloud_backup
netapp/fas_500f_firmware
netapp/solidfire_baseboard_management_controller_firmware
Published
Mar 22, 2021
Tracked Since
Feb 18, 2026