CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
AI Score
Confidence
Low
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.
git.kernel.org/linus/f5051bcece50140abd1a11a2d36dc3ec5484fc32
git.kernel.org/stable/c/8d7924ce85bae64e7a67c366c7c50840f49f3a62
git.kernel.org/stable/c/8e9662fde6d63c78eb1350f6167f64c9d71a865b
git.kernel.org/stable/c/cac71d27745f92ee13f0ecc668ffe151a4a9c9b1
git.kernel.org/stable/c/f5051bcece50140abd1a11a2d36dc3ec5484fc32
ubuntu.com/security/CVE-2021-47295
www.cve.org/CVERecord?id=CVE-2021-47295