Vulnerability Details : CVE-2021-47295
In the Linux kernel, the following vulnerability has been resolved:
net: sched: fix memory leak in tcindex_partial_destroy_work
Syzbot reported memory leak in tcindex_set_parms(). The problem was in
non-freed perfect hash in tcindex_partial_destroy_work().
In tcindex_set_parms() new tcindex_data is allocated and some fields from
old one are copied to new one, but not the perfect hash. Since
tcindex_partial_destroy_work() is the destroy function for old
tcindex_data, we need to free perfect hash to avoid memory leak.
Products affected by CVE-2021-47295
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Exploit prediction scoring system (EPSS) score for CVE-2021-47295
0.05%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 15 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2021-47295
Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
---|---|---|---|---|---|---|
7.5
|
HIGH | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
3.9
|
3.6
|
134c704f-9b21-4f2e-91b3-4a467353bcc0 | 2024-07-03 |
CWE ids for CVE-2021-47295
-
The product does not properly control the allocation and maintenance of a limited resource, thereby enabling an actor to influence the amount of resources consumed, eventually leading to the exhaustion of available resources.Assigned by: 134c704f-9b21-4f2e-91b3-4a467353bcc0 (Secondary)
References for CVE-2021-47295
-
https://git.kernel.org/stable/c/cac71d27745f92ee13f0ecc668ffe151a4a9c9b1
net: sched: fix memory leak in tcindex_partial_destroy_work - kernel/git/stable/linux.git - Linux kernel stable tree
-
https://git.kernel.org/stable/c/8e9662fde6d63c78eb1350f6167f64c9d71a865b
net: sched: fix memory leak in tcindex_partial_destroy_work - kernel/git/stable/linux.git - Linux kernel stable tree
-
https://git.kernel.org/stable/c/f5051bcece50140abd1a11a2d36dc3ec5484fc32
net: sched: fix memory leak in tcindex_partial_destroy_work - kernel/git/stable/linux.git - Linux kernel stable tree
-
https://git.kernel.org/stable/c/8d7924ce85bae64e7a67c366c7c50840f49f3a62
net: sched: fix memory leak in tcindex_partial_destroy_work - kernel/git/stable/linux.git - Linux kernel stable tree
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