DEBIAN-CVE-2023-53296

See a problem?
Please try reporting it to the source first.
Source
https://security-tracker.debian.org/tracker/CVE-2023-53296
Import Source
https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2023-53296.json
JSON Data
https://api.osv.dev/v1/vulns/DEBIAN-CVE-2023-53296
Upstream
Published
2025-09-16T08:15:38Z
Modified
2025-09-30T05:16:22.825787Z
Summary
[none]
Details

In the Linux kernel, the following vulnerability has been resolved: sctp: check send stream number after waitforsndbuf This patch fixes a corner case where the asoc out stream count may change after waitforsndbuf. When the main thread in the client starts a connection, if its out stream count is set to N while the in stream count in the server is set to N - 2, another thread in the client keeps sending the msgs with stream number N - 1, and waits for sndbuf before processing INITACK. However, after processing INITACK, the out stream count in the client is shrunk to N - 2, the same to the in stream count in the server. The crash occurs when the thread waiting for sndbuf is awake and sends the msg in a non-existing stream(N - 1), the call trace is as below: KASAN: null-ptr-deref in range [0x0000000000000038-0x000000000000003f] Call Trace: <TASK> sctpcmdsendmsg net/sctp/smsideeffect.c:1114 [inline] sctpcmdinterpreter net/sctp/smsideeffect.c:1777 [inline] sctpsideeffects net/sctp/smsideeffect.c:1199 [inline] sctpdosm+0x197d/0x5310 net/sctp/smsideeffect.c:1170 sctpprimitiveSEND+0x9f/0xc0 net/sctp/primitive.c:163 sctpsendmsgtoasoc+0x10eb/0x1a30 net/sctp/socket.c:1868 sctpsendmsg+0x8d4/0x1d90 net/sctp/socket.c:2026 inetsendmsg+0x9d/0xe0 net/ipv4/afinet.c:825 socksendmsgnosec net/socket.c:722 [inline] socksendmsg+0xde/0x190 net/socket.c:745 The fix is to add an unlikely check for the send stream number after the thread wakes up from the waitforsndbuf.

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
6.1.25-1

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
6.1.25-1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Debian:14 / 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
6.1.25-1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}