Use-after-free in Linux kernel's net/sched: cls_u32 component
A use-after-free vulnerability in the Linux kernel's net/sched: cls_u32 component can be exploited to achieve local privilege escalation. If tcf_change_indev() fails, u32_set_parms() will immediately return an error after incrementing or decrementing the reference counter in tcf_bind_filter(). If an attacker can control the reference counter and set it to zero, they can cause the reference to be freed, leading to a use-after-free vulnerability. We recommend upgrading past commit 04c55383fa5689357bcdd2c8036725a55ed632bc.
CVE-2023-3609
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: cve:CVE-2023-3609
Kernel
Source reference: /containers/cna/affected/0/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"cpes": [
"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*"
],
"repo": "https://git.kernel.org",
"vendor": "Linux",
"product": "Kernel",
"versions": [
{
"status": "affected",
"version": "4.14.0",
"lessThan": "4.14.322",
"versionType": "semver"
},
{
"status": "affected",
"version": "4.15.0",
"lessThan": "4.19.291",
"versionType": "semver"
},
{
"status": "affected",
"version": "4.20.0",
"lessThan": "5.4.248",
"versionType": "semver"
},
{
"status": "affected",
"version": "5.5.0",
"lessThan": "5.10.185",
"versionType": "semver"
},
{
"status": "affected",
"version": "5.11.0",
"lessThan": "5.15.118",
"versionType": "semver"
},
{
"status": "affected",
"version": "5.16.0",
"lessThan": "6.1.35",
"versionType": "semver"
},
{
"status": "affected",
"version": "6.2.0",
"lessThan": "6.3.9",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "6.4.0",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "04c55383fa5689357bcdd2c8036725a55ed632bc",
"versionType": "git"
}
],
"platforms": [
"Linux"
],
"packageName": "kernel",
"defaultStatus": "unaffected"
}
]- Related CVEs
- CVE-2023-3609
Source reference:
/cveMetadata/cveId
Publisher severity
high
Source reference: /containers/cna/metrics
- Event
- #23224 · Revision 1
- Added to Heist Feed
- Publisher date