CVE-2021-47295
- Source
- https://cve.org/CVERecord?id=CVE-2021-47295
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-47295.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2021-47295
- Downstream
- Related
- Published
- 2024-05-21T15:15:17.400Z
- Modified
- 2026-03-10T23:52:20.627417Z
- Severity
-
- 7.5 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
- Summary
- [none]
- Details
-
In the Linux kernel, the following vulnerability has been resolved:
net: sched: fix memory leak in tcindexpartialdestroy_work
Syzbot reported memory leak in tcindexsetparms(). The problem was in non-freed perfect hash in tcindexpartialdestroy_work().
In tcindexsetparms() new tcindexdata is allocated and some fields from old one are copied to new one, but not the perfect hash. Since tcindexpartialdestroywork() is the destroy function for old tcindex_data, we need to free perfect hash to avoid memory leak.
- References
-
- https://git.kernel.org/stable/c/01d0d2b8b4e3cf2110baba9371c0c3d04ad5c77b
- https://git.kernel.org/stable/c/18c3fa7a7fdbb4d21dafc8a7710ae2c1680930f6
- https://git.kernel.org/stable/c/372ae77cf11d11fb118cbe2d37def9dd5f826abd
- https://git.kernel.org/stable/c/7a6fb69bbcb21e9ce13bdf18c008c268874f0480
- https://git.kernel.org/stable/c/3abebc503a5148072052c229c6b04b329a420ecd
- https://git.kernel.org/stable/c/53af9c793f644d5841d84d8e0ad83bd7ab47f3e0
- https://git.kernel.org/stable/c/7c183dc0af472dec33d2c0786a5e356baa8cad19
- https://git.kernel.org/stable/c/8e9662fde6d63c78eb1350f6167f64c9d71a865b
- https://git.kernel.org/stable/c/cac71d27745f92ee13f0ecc668ffe151a4a9c9b1
- https://git.kernel.org/stable/c/8d7924ce85bae64e7a67c366c7c50840f49f3a62
- https://git.kernel.org/stable/c/f5051bcece50140abd1a11a2d36dc3ec5484fc32
Affected packages
Git /
Database specific
source
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-47295.json"
unresolved_ranges
[
{
"events": [
{
"introduced": "3.18"
},
{
"fixed": "5.4.136"
}
]
},
{
"events": [
{
"introduced": "5.5"
},
{
"fixed": "5.10.54"
}
]
},
{
"events": [
{
"introduced": "5.11"
},
{
"fixed": "5.13.6"
}
]
},
{
"events": [
{
"introduced": "0"
},
{
"last_affected": "5.14-rc1"
}
]
},
{
"events": [
{
"introduced": "0"
},
{
"last_affected": "5.14-rc2"
}
]
}
]