Ubuntu.comUB:CVE-2023-42752CVE-2023-42752
5.5 Medium
CVSS3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
1.7 Low
CVSS2
Access Vector
LOCAL
Access Complexity
LOW
Authentication
SINGLE
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
PARTIAL
AV:L/AC:L/Au:S/C:N/I:N/A:P
0.0004 Low
EPSS
Percentile
5.2%
An integer overflow flaw was found in the Linux kernel. This issue leads to
the kernel allocating skb_shared_info in the userspace, which is
exploitable in systems without SMAP protection since skb_shared_info
contains references to function pointers.
Bugs
- <https://bugzilla.redhat.com/show_bug.cgi?id=2239828>
- <https://bugzilla.suse.com/show_bug.cgi?id=1215146>
Notes
| Author | Note |
|---|---|
| Priority reason: By using unprivileged user namespaces, this can be exploited to achieve denial of service or code execution. |
| OS | Version | Architecture | Package | Version | Filename |
|---|---|---|---|---|---|
| ubuntu | 18.04 | noarch | linux | < 4.15.0-219.230) Available with Ubuntu Pro or Ubuntu Pro (Infra-only | UNKNOWN |
| ubuntu | 20.04 | noarch | linux | < 5.4.0-165.182 | UNKNOWN |
| ubuntu | 22.04 | noarch | linux | < 5.15.0-87.97 | UNKNOWN |
| ubuntu | 23.04 | noarch | linux | < 6.2.0-35.35 | UNKNOWN |
| ubuntu | 14.04 | noarch | linux | < 3.13.0-194.245) Available with Ubuntu Pro or Ubuntu Pro (Infra-only | UNKNOWN |
| ubuntu | 16.04 | noarch | linux | < 4.4.0-246.280) Available with Ubuntu Pro or Ubuntu Pro (Infra-only | UNKNOWN |
| ubuntu | 18.04 | noarch | linux-aws | < 4.15.0-1162.175) Available with Ubuntu Pro or Ubuntu Pro (Infra-only | UNKNOWN |
| ubuntu | 20.04 | noarch | linux-aws | < 5.4.0-1112.121 | UNKNOWN |
| ubuntu | 22.04 | noarch | linux-aws | < 5.15.0-1048.53 | UNKNOWN |
| ubuntu | 23.04 | noarch | linux-aws | < 6.2.0-1014.14 | UNKNOWN |
References
git.kernel.org/linus/915d975b2ffa58a14bfcf16fafe00c41315949ff (6.6-rc1)
git.kernel.org/linus/c3b704d4a4a265660e665df51b129e8425216ed1 (6.6-rc1)
launchpad.net/bugs/cve/CVE-2023-42752
nvd.nist.gov/vuln/detail/CVE-2023-42752
security-tracker.debian.org/tracker/CVE-2023-42752
ubuntu.com/security/notices/USN-6439-1
ubuntu.com/security/notices/USN-6439-2
ubuntu.com/security/notices/USN-6440-1
ubuntu.com/security/notices/USN-6440-2
ubuntu.com/security/notices/USN-6440-3
ubuntu.com/security/notices/USN-6441-1
ubuntu.com/security/notices/USN-6441-2
ubuntu.com/security/notices/USN-6441-3
ubuntu.com/security/notices/USN-6442-1
ubuntu.com/security/notices/USN-6443-1
ubuntu.com/security/notices/USN-6444-1
ubuntu.com/security/notices/USN-6444-2
ubuntu.com/security/notices/USN-6445-1
ubuntu.com/security/notices/USN-6445-2
ubuntu.com/security/notices/USN-6446-1
ubuntu.com/security/notices/USN-6446-2
ubuntu.com/security/notices/USN-6446-3
ubuntu.com/security/notices/USN-6460-1
ubuntu.com/security/notices/USN-6466-1
www.cve.org/CVERecord?id=CVE-2023-42752
www.openwall.com/lists/oss-security/2023/09/18/3
Related
5.5 Medium
CVSS3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
1.7 Low
CVSS2
Access Vector
LOCAL
Access Complexity
LOW
Authentication
SINGLE
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
PARTIAL
AV:L/AC:L/Au:S/C:N/I:N/A:P
0.0004 Low
EPSS
Percentile
5.2%