Vulnerability Details : CVE-2021-47116
In the Linux kernel, the following vulnerability has been resolved:
ext4: fix memory leak in ext4_mb_init_backend on error path.
Fix a memory leak discovered by syzbot when a file system is corrupted
with an illegally large s_log_groups_per_flex.
Products affected by CVE-2021-47116
- cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:5.13:rc1:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:5.13:rc2:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:5.13:rc3:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:5.13:rc4:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2021-47116
0.04%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 9 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2021-47116
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
5.5
|
MEDIUM | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
1.8
|
3.6
|
NIST | 2025-01-07 |
CWE ids for CVE-2021-47116
-
The product does not sufficiently track and release allocated memory after it has been used, which slowly consumes remaining memory.Assigned by: nvd@nist.gov (Primary)
References for CVE-2021-47116
-
https://git.kernel.org/stable/c/a8867f4e3809050571c98de7a2d465aff5e4daf5
ext4: fix memory leak in ext4_mb_init_backend on error path. - kernel/git/stable/linux.git - Linux kernel stable treePatch
-
https://git.kernel.org/stable/c/2050c6e5b161e5e25ce3c420fef58b24fa388a49
ext4: fix memory leak in ext4_mb_init_backend on error path. - kernel/git/stable/linux.git - Linux kernel stable treePatch
-
https://git.kernel.org/stable/c/04fb2baa0b147f51db065a1b13a11954abe592d0
ext4: fix memory leak in ext4_mb_init_backend on error path. - kernel/git/stable/linux.git - Linux kernel stable treePatch
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