trace/fgraph: Fix the warning caused by missing unregister notifier
In the Linux kernel, the following vulnerability has been resolved: trace/fgraph: Fix the warning caused by missing unregister notifier This warning was triggered during testing on v6.16: notifier callback ftrace_suspend_notifier_call already registered WARNING: CPU: 2 PID: 86 at kernel/notifier.c:23 notifier_chain_register+0x44/0xb0 ... Call Trace: blocking_notifier_chain_register+0x34/0x60 register_ftrace_graph+0x330/0x410 ftrace_profile_write+0x1e9/0x340 vfs_write+0xf8/0x420 ? filp_flush+0x8a/0xa0 ? filp_close+0x1f/0x30 ? do_dup2+0xaf/0x160 ksys_write+0x65/0xe0 do_syscall_64+0xa4/0x260 entry_SYSCALL_64_after_hwframe+0x77/0x7f When writing to the function_profile_enabled interface, the notifier was not unregistered after start_graph_tracing failed, causing a warning the next time function_profile_enabled was written. Fixed by adding unregister_pm_notifier in the exception path.
CVE-2025-39829
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-2025-39829
Linux
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
Linux
Source reference: /containers/cna/affected/1/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.
[
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "4a2b8dda3f8705880ec7408135645602d5590f51",
"lessThan": "aa977309397fe2438801b1ca1ce7bc4106d8e985",
"versionType": "git"
},
{
"status": "affected",
"version": "4a2b8dda3f8705880ec7408135645602d5590f51",
"lessThan": "2a2deb9f8df70480050351ac27041f19bb9e718b",
"versionType": "git"
},
{
"status": "affected",
"version": "4a2b8dda3f8705880ec7408135645602d5590f51",
"lessThan": "000aa47a51233fd38a629b029478e0278e1e9fbe",
"versionType": "git"
},
{
"status": "affected",
"version": "4a2b8dda3f8705880ec7408135645602d5590f51",
"lessThan": "edede7a6dcd7435395cf757d053974aaab6ab1c2",
"versionType": "git"
}
],
"programFiles": [
"kernel/trace/fgraph.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "2.6.30"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "2.6.30",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "6.6.160",
"versionType": "semver",
"lessThanOrEqual": "6.6.*"
},
{
"status": "unaffected",
"version": "6.12.45",
"versionType": "semver",
"lessThanOrEqual": "6.12.*"
},
{
"status": "unaffected",
"version": "6.16.5",
"versionType": "semver",
"lessThanOrEqual": "6.16.*"
},
{
"status": "unaffected",
"version": "6.17",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"kernel/trace/fgraph.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2025-39829
Source reference:
/cveMetadata/cveId
Publisher severity
No explicit severity was provided.
- Event
- #46019 · Revision 1
- Added to Heist Feed
- Publisher date