CVE-2023-52992

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Source
https://nvd.nist.gov/vuln/detail/CVE-2023-52992
Import Source
https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2023-52992.json
JSON Data
https://api.test.osv.dev/v1/vulns/CVE-2023-52992
Related
Published
2025-03-27T17:15:46Z
Modified
2025-03-28T18:50:37.428122Z
Downstream
Summary
[none]
Details

In the Linux kernel, the following vulnerability has been resolved:

bpf: Skip task with pid=1 in sendsignalcommon()

The following kernel panic can be triggered when a task with pid=1 attaches a prog that attempts to send killing signal to itself, also see [1] for more details:

Kernel panic - not syncing: Attempted to kill init! exitcode=0x0000000b CPU: 3 PID: 1 Comm: systemd Not tainted 6.1.0-09652-g59fe41b5255f #148 Call Trace: <TASK> _dumpstack lib/dumpstack.c:88 [inline] dumpstacklvl+0x100/0x178 lib/dumpstack.c:106 panic+0x2c4/0x60f kernel/panic.c:275 doexit.cold+0x63/0xe4 kernel/exit.c:789 dogroupexit+0xd4/0x2a0 kernel/exit.c:950 getsignal+0x2460/0x2600 kernel/signal.c:2858 archdosignalorrestart+0x78/0x5d0 arch/x86/kernel/signal.c:306 exittousermodeloop kernel/entry/common.c:168 [inline] exittousermodeprepare+0x15f/0x250 kernel/entry/common.c:203 _syscallexittousermodework kernel/entry/common.c:285 [inline] syscallexittousermode+0x1d/0x50 kernel/entry/common.c:296 dosyscall64+0x44/0xb0 arch/x86/entry/common.c:86 entrySYSCALL64afterhwframe+0x63/0xcd

So skip task with pid=1 in bpfsendsignal_common() to avoid the panic.

[1] https://lore.kernel.org/bpf/20221222043507.33037-1-sunhao.th@gmail.com

References

Affected packages

Debian:11 / linux

Package

Name
linux
Purl
pkg:deb/debian/linux?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
5.10.178-1

Affected versions

5.*

5.10.46-4
5.10.46-5
5.10.70-1~bpo10+1
5.10.70-1
5.10.84-1
5.10.92-1~bpo10+1
5.10.92-1
5.10.92-2
5.10.103-1~bpo10+1
5.10.103-1
5.10.106-1
5.10.113-1
5.10.120-1~bpo10+1
5.10.120-1
5.10.127-1
5.10.127-2~bpo10+1
5.10.127-2
5.10.136-1
5.10.140-1
5.10.148-1
5.10.149-1
5.10.149-2
5.10.158-1
5.10.158-2
5.10.162-1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Debian:12 / linux

Package

Name
linux
Purl
pkg:deb/debian/linux?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
6.1.11-1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Debian:13 / linux

Package

Name
linux
Purl
pkg:deb/debian/linux?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
6.1.11-1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}