linux — security advisory
In the Linux kernel, the following vulnerability has been resolved: bpf: Guard against accessing NULL pt_regs in bpf_get_task_stack() task_pt_regs() can return NULL on powerpc for kernel threads. This is then used in __bpf_get_stack() to check for user mode, resulting in a kernel oops. Guard against this by checking return value of task_pt_regs() before trying to obtain the call chain.
- Products
- linux
- Affected versions
- Not specified
- Fixed versions
- 5.16.7-1
- CVEs
- CVE-2022-48770
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 30 Oct 2026, 15:24 UTC · Revision 1
Source evidence
In the Linux kernel, the following vulnerability has been resolved: bpf: Guard against accessing NULL pt_regs in bpf_get_task_stack() task_pt_regs() can return NULL on powerpc for kernel threads. This is then used in __bpf_get_stack() to check for user mode, resulting in a kernel oops. Guard against this by checking return value of task_pt_regs() before trying to obtain the call chain.
osv:DEBIAN-CVE-2022-48770
linux
Fixed versions: 5.16.7-1
linux
Fixed versions: 5.16.7-1
linux
Fixed versions: 5.16.7-1
Complete source record
{
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"url": "https://osv.dev/vulnerability/DEBIAN-CVE-2022-48770",
"method": "structured",
"payload": {
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"title": "DEBIAN-CVE-2022-48770",
"summary": "In the Linux kernel, the following vulnerability has been resolved: bpf: Guard against accessing NULL pt_regs in bpf_get_task_stack() task_pt_regs() can return NULL on powerpc for kernel threads. This is then used in __bpf_get_stack() to check for user mode, resulting in a kernel oops. Guard against this by checking return value of task_pt_regs() before trying to obtain the call chain.",
"evidence": "osv:DEBIAN-CVE-2022-48770",
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},
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],
"modified": "2026-10-15T08:02:56.299862620Z",
"provider": "osv",
"upstream": [
"CVE-2022-48770"
],
"references": [
"https://security-tracker.debian.org/tracker/CVE-2022-48770"
]
},
"related_cves": [
{
"value": "CVE-2022-48770",
"evidence": "/upstream"
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],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 324668,
"published_at": "2024-06-20T12:15:14.953+00:00"
}