Vulnerability Details : CVE-2021-28964
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.
Vulnerability category: Denial of service
Exploit prediction scoring system (EPSS) score for CVE-2021-28964
Probability of exploitation activity in the next 30 days: 0.05%
Percentile, the proportion of vulnerabilities that are scored at or less: ~ 12 % EPSS Score History EPSS FAQ
CVSS scores for CVE-2021-28964
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|
|
1.9
|
LOW | AV:L/AC:M/Au:N/C:N/I:N/A:P |
3.4
|
2.9
|
nvd@nist.gov |
|
4.7
|
MEDIUM | CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H |
1.0
|
3.6
|
nvd@nist.gov |
CWE ids for CVE-2021-28964
-
The product contains a code sequence that can run concurrently with other code, and the code sequence requires temporary, exclusive access to a shared resource, but a timing window exists in which the shared resource can be modified by another code sequence that is operating concurrently.Assigned by: nvd@nist.gov (Primary)
References for CVE-2021-28964
-
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=dbcc7d57bffc0c8cac9dac11bec548597d59a6a5
kernel/git/torvalds/linux.git - Linux kernel source treeMailing List;Vendor Advisory
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https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/T2S3I4SLRNRUQDOFYUS6IUAZMQNMPNLG/
[SECURITY] Fedora 32 Update: kernel-5.11.10-100.fc32 - package-announce - Fedora Mailing-ListsMailing List;Third Party Advisory
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https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/PTRNPQTZ4GVS46SZ4OBXY5YDOGVPSTGQ/
[SECURITY] Fedora 34 Update: kernel-5.11.9-300.fc34 - package-announce - Fedora Mailing-ListsMailing List;Third Party Advisory
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https://lists.debian.org/debian-lts-announce/2021/06/msg00019.html
[SECURITY] [DLA 2690-1] linux-4.19 security updateMailing List;Third Party Advisory
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https://lists.debian.org/debian-lts-announce/2021/06/msg00020.html
[SECURITY] [DLA 2689-1] linux security updateMailing List;Third Party Advisory
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https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/4VCKIOXCOZGXBEZMO5LGGV5MWCHO6FT3/
[SECURITY] Fedora 33 Update: kernel-5.11.9-200.fc33 - package-announce - Fedora Mailing-ListsMailing List;Third Party Advisory
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https://security.netapp.com/advisory/ntap-20210430-0003/
March 2021 Linux Kernel 5.11.8 Vulnerabilities in NetApp Products | NetApp Product SecurityThird Party Advisory
Products affected by CVE-2021-28964
- cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
- cpe:2.3:o:fedoraproject:fedora:32:*:*:*:*:*:*:*
- cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:*
- cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:*
- cpe:2.3:a:netapp:cloud_backup:-:*:*:*:*:*:*:*
- cpe:2.3:o:netapp:aff_a250_firmware:-:*:*:*:*:*:*:*
- cpe:2.3:o:netapp:solidfire_baseboard_management_controller_firmware:-:*:*:*:*:*:*:*
- cpe:2.3:o:netapp:fas_500f_firmware:-:*:*:*:*:*:*:*