DEBIAN-CVE-2023-52767

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Source
https://security-tracker.debian.org/tracker/DEBIAN-CVE-2023-52767
Import Source
https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2023-52767.json
JSON Data
https://api.osv.dev/v1/vulns/DEBIAN-CVE-2023-52767
Upstream
Published
2024-05-21T16:15:15Z
Modified
2025-09-25T03:42:22.710956Z
Summary
[none]
Details

In the Linux kernel, the following vulnerability has been resolved: tls: fix NULL deref on tlsswspliceeof() with empty record syzkaller discovered that if tlsswspliceeof() is executed as part of sendfile() when the plaintext/ciphertext skmsg are empty, the send path gets confused because the empty ciphertext buffer does not have enough space for the encryption overhead. This causes tlspushrecord() to go on the split = true path (which is only supposed to be used when interacting with an attached BPF program), and then get further confused and hit the tlsmergeopenrecord() path, which then assumes that there must be at least one populated buffer element, leading to a NULL deref. It is possible to have empty plaintext/ciphertext buffers if we previously bailed from tlsswsendmsglocked() via the tlstrimbothmsgs() path. tlsswpushpendingrecord() already handles this case correctly; let's do the same check in tlsswsplice_eof().

References

Affected packages

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
6.1.82-1

Affected versions

6.*

6.1.27-1
6.1.37-1
6.1.38-1
6.1.38-2~bpo11+1
6.1.38-2
6.1.38-3
6.1.38-4~bpo11+1
6.1.38-4
6.1.52-1
6.1.55-1~bpo11+1
6.1.55-1
6.1.64-1
6.1.66-1
6.1.67-1
6.1.69-1~bpo11+1
6.1.69-1
6.1.76-1~bpo11+1
6.1.76-1

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
6.6.8-1

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
6.6.8-1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}