linux — security advisory
In the Linux kernel, the following vulnerability has been resolved: kprobes: Fix check for probe enabled in kill_kprobe() In kill_kprobe(), the check whether disarm_kprobe_ftrace() needs to be called always fails. This is because before that we set the KPROBE_FLAG_GONE flag for kprobe so that "!kprobe_disabled(p)" is always false. The disarm_kprobe_ftrace() call introduced by commit: 0cb2f1372baa ("kprobes: Fix NULL pointer dereference at kprobe_ftrace_handler") to fix the NULL pointer reference problem. When the probe is enabled, if we do not disarm it, this problem still exists. Fix it by putting the probe enabled check before setting the KPROBE_FLAG_GONE flag.
- Products
- linux
- Affected versions
- Not specified
- Fixed versions
- 6.1.4-1
- CVEs
- CVE-2022-50266
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 30 Oct 2026, 15:49 UTC · Revision 1
Source evidence
In the Linux kernel, the following vulnerability has been resolved: kprobes: Fix check for probe enabled in kill_kprobe() In kill_kprobe(), the check whether disarm_kprobe_ftrace() needs to be called always fails. This is because before that we set the KPROBE_FLAG_GONE flag for kprobe so that "!kprobe_disabled(p)" is always false. The disarm_kprobe_ftrace() call introduced by commit: 0cb2f1372baa ("kprobes: Fix NULL pointer dereference at kprobe_ftrace_handler") to fix the NULL pointer reference problem. When the probe is enabled, if we do not disarm it, this problem still exists. Fix it by putting the probe enabled check before setting the KPROBE_FLAG_GONE flag.
osv:DEBIAN-CVE-2022-50266
linux
Fixed versions: 6.1.4-1
linux
Fixed versions: 6.1.4-1
linux
Fixed versions: 6.1.4-1
Complete source record
{
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"url": "https://osv.dev/vulnerability/DEBIAN-CVE-2022-50266",
"method": "structured",
"payload": {
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"title": "DEBIAN-CVE-2022-50266",
"summary": "In the Linux kernel, the following vulnerability has been resolved: kprobes: Fix check for probe enabled in kill_kprobe() In kill_kprobe(), the check whether disarm_kprobe_ftrace() needs to be called always fails. This is because before that we set the KPROBE_FLAG_GONE flag for kprobe so that \"!kprobe_disabled(p)\" is always false. The disarm_kprobe_ftrace() call introduced by commit: 0cb2f1372baa (\"kprobes: Fix NULL pointer dereference at kprobe_ftrace_handler\") to fix the NULL pointer reference problem. When the probe is enabled, if we do not disarm it, this problem still exists. Fix it by putting the probe enabled check before setting the KPROBE_FLAG_GONE flag.",
"evidence": "osv:DEBIAN-CVE-2022-50266",
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],
"modified": "2026-10-15T08:03:18.069150755Z",
"provider": "osv",
"upstream": [
"CVE-2022-50266"
],
"references": [
"https://security-tracker.debian.org/tracker/CVE-2022-50266"
]
},
"related_cves": [
{
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"evidence": "/upstream"
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"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 326172,
"published_at": "2025-09-15T15:15:37.347+00:00"
}