linux — security advisory
In the Linux kernel, the following vulnerability has been resolved: SUNRPC: Fix the svc_deferred_event trace class Fix a NULL deref crash that occurs when an svc_rqst is deferred while the sunrpc tracing subsystem is enabled. svc_revisit() sets dr->xprt to NULL, so it can't be relied upon in the tracepoint to provide the remote's address. Unfortunately we can't revert the "svc_deferred_class" hunk in commit ece200ddd54b ("sunrpc: Save remote presentation address in svc_xprt for trace events") because there is now a specific check of event format specifiers for unsafe dereferences. The warning that check emits is: event svc_defer_recv has unsafe dereference of argument 1 A "%pISpc" format specifier with a "struct sockaddr *" is indeed flagged by this check. Instead, take the brute-force approach used by the svcrdma_qp_error tracepoint. Convert the dr::addr field into a presentation address in the TP_fast_assign() arm of the trace event, and store that as a string. This fix can be backported to -stable kernels. In the meantime, commit c6ced22997ad ("tracing: Update print fmt check to handle new __get_sockaddr() macro") is now in v5.18, so this wonky fix can be replaced with __sockaddr() and friends properly during the v5.19 merge window.
- Products
- linux
- Affected versions
- Not specified
- Fixed versions
- 5.17.6-1
- CVEs
- CVE-2022-49065
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 30 Oct 2026, 15:05 UTC · Revision 1
Source evidence
In the Linux kernel, the following vulnerability has been resolved: SUNRPC: Fix the svc_deferred_event trace class Fix a NULL deref crash that occurs when an svc_rqst is deferred while the sunrpc tracing subsystem is enabled. svc_revisit() sets dr->xprt to NULL, so it can't be relied upon in the tracepoint to provide the remote's address. Unfortunately we can't revert the "svc_deferred_class" hunk in commit ece200ddd54b ("sunrpc: Save remote presentation address in svc_xprt for trace events") because there is now a specific check of event format specifiers for unsafe dereferences. The warning that check emits is: event svc_defer_recv has unsafe dereference of argument 1 A "%pISpc" format specifier with a "struct sockaddr *" is indeed flagged by this check. Instead, take the brute-force approach used by the svcrdma_qp_error tracepoint. Convert the dr::addr field into a presentation address in the TP_fast_assign() arm of the trace event, and store that as a string. This fix can be backported to -stable kernels. In the meantime, commit c6ced22997ad ("tracing: Update print fmt check to handle new __get_sockaddr() macro") is now in v5.18, so this wonky fix can be replaced with __sockaddr() and friends properly during the v5.19 merge window.
osv:DEBIAN-CVE-2022-49065
linux
Fixed versions: 5.17.6-1
linux
Fixed versions: 5.17.6-1
linux
Fixed versions: 5.17.6-1
Complete source record
{
"id": "45177e1704f69d94e3c40d604dfc21444c9afcc353f8b77681fb9a1c4630dcce",
"url": "https://osv.dev/vulnerability/DEBIAN-CVE-2022-49065",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "DEBIAN-CVE-2022-49065",
"summary": "In the Linux kernel, the following vulnerability has been resolved: SUNRPC: Fix the svc_deferred_event trace class Fix a NULL deref crash that occurs when an svc_rqst is deferred while the sunrpc tracing subsystem is enabled. svc_revisit() sets dr->xprt to NULL, so it can't be relied upon in the tracepoint to provide the remote's address. Unfortunately we can't revert the \"svc_deferred_class\" hunk in commit ece200ddd54b (\"sunrpc: Save remote presentation address in svc_xprt for trace events\") because there is now a specific check of event format specifiers for unsafe dereferences. The warning that check emits is: event svc_defer_recv has unsafe dereference of argument 1 A \"%pISpc\" format specifier with a \"struct sockaddr *\" is indeed flagged by this check. Instead, take the brute-force approach used by the svcrdma_qp_error tracepoint. Convert the dr::addr field into a presentation address in the TP_fast_assign() arm of the trace event, and store that as a string. This fix can be backported to -stable kernels. In the meantime, commit c6ced22997ad (\"tracing: Update print fmt check to handle new __get_sockaddr() macro\") is now in v5.18, so this wonky fix can be replaced with __sockaddr() and friends properly during the v5.19 merge window.",
"evidence": "osv:DEBIAN-CVE-2022-49065",
"products": [
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"severity": "medium",
"structured": {
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"aliases": [
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"metrics": [
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"affected": [
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"ecosystem": "Debian:12"
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"database_specific": {
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"package": {
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"package": {
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"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2022-49065.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
}
],
"modified": "2026-10-15T08:02:49.172386756Z",
"provider": "osv",
"upstream": [
"CVE-2022-49065"
],
"references": [
"https://security-tracker.debian.org/tracker/CVE-2022-49065"
]
},
"related_cves": [
{
"value": "CVE-2022-49065",
"evidence": "/upstream"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 324310,
"published_at": "2025-02-26T07:00:43.723+00:00"
}