samba: DoS (smbd crash) due memory leak in management of fds for socket connections
Published Jan 30, 2012
5.0
MEDIUMCVSS 2.0
EPSS 3.47%
Description
Memory leak in smbd in Samba 3.6.x before 3.6.3 allows remote attackers to cause a denial of service (memory and CPU consumption) by making many connection requests.
Affected products
No data.
No data.
Red Hat Enterprise Linux 4
samba
Not affected
Red Hat Enterprise Linux 5
samba
Not affected
Red Hat Enterprise Linux 5
samba3x
Not affected
Red Hat Enterprise Linux 6
samba
Not affected
Red Hat Enterprise Linux 6
samba4
Not affected
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 4 | samba | Not affected | n/a |
| Red Hat Enterprise Linux 5 | samba | Not affected | n/a |
| Red Hat Enterprise Linux 5 | samba3x | Not affected | n/a |
| Red Hat Enterprise Linux 6 | samba | Not affected | n/a |
| Red Hat Enterprise Linux 6 | samba4 | Not affected | n/a |
No package ranges for this CVE.
Remediation
Red Hat statement
Not vulnerable. This issue did not affect the versions of samba as shipped with Red Hat Enterprise Linux 4, 5, and 6. This issue did not affect the version of samba3x as shipped with Red Hat Enterprise Linux 5. This issue did not affect the version of samba4 as shipped with Red Hat Enterprise Linux 6.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
No CVSS v3.0 score for this CVE.
AV:N/AC:L/Au:N/C:N/I:N/A:P
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
Score over time
2022–2026- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (10 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 3.47% (0.03470) | 88.68th | v5 (v2026.06.15) |
| Jun 15, 2026 | 3.50% (0.03503) | 87.62th | v5 (v2026.06.15) |
| Oct 19, 2025 | 7.46% (0.07461) | 91.32th | v4 (v2025.03.14) |
| Mar 17, 2025 | 3.30% (0.03298) | 86.37th | v4 (v2025.03.14) |
| Dec 12, 2024 | 3.39% (0.03391) | 91.77th | v3 (v2023.03.01) |
| Mar 7, 2023 | 3.39% (0.03391) | 89.92th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.32% (0.01319) | 71.27th | v2 (v2022.01.01) |
| Feb 23, 2023 | 1.32% (0.01319) | 71.23th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.32% (0.01319) | 69.22th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.32% (0.01319) | 44.98th | v2 (v2022.01.01) |
References (11)
- http://lists.fedoraproject.org/pipermail/package-announce/2012-February/072930.html vendor-advisoryx_refsource_FEDORA
- http://lists.opensuse.org/opensuse-security-announce/2012-04/msg00008.html vendor-advisoryx_refsource_SUSE
- http://lists.opensuse.org/opensuse-security-announce/2012-04/msg00014.html vendor-advisoryx_refsource_SUSE
- http://secunia.com/advisories/47763 third-party-advisoryx_refsource_SECUNIAVendor Advisory
- http://secunia.com/advisories/48879 third-party-advisoryx_refsource_SECUNIA
- http://www.samba.org/samba/history/samba-3.6.3.html x_refsource_CONFIRM
- http://www.samba.org/samba/security/CVE-2012-0817 x_refsource_CONFIRMPatchVendor Advisory
- https://access.redhat.com/security/cve/CVE-2012-0817 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=785746 Issue Tracking
- https://nvd.nist.gov/vuln/detail/CVE-2012-0817
- https://www.cve.org/CVERecord?id=CVE-2012-0817
| Link | Providers | Tags |
|---|---|---|
| http://lists.fedoraproject.org/pipermail/package-announce/2012-February/072930.html | vendor-advisoryx_refsource_FEDORA | |
| http://lists.opensuse.org/opensuse-security-announce/2012-04/msg00008.html | vendor-advisoryx_refsource_SUSE | |
| http://lists.opensuse.org/opensuse-security-announce/2012-04/msg00014.html | vendor-advisoryx_refsource_SUSE | |
| http://secunia.com/advisories/47763 | third-party-advisoryx_refsource_SECUNIAVendor Advisory | |
| http://secunia.com/advisories/48879 | third-party-advisoryx_refsource_SECUNIA | |
| http://www.samba.org/samba/history/samba-3.6.3.html | x_refsource_CONFIRM | |
| http://www.samba.org/samba/security/CVE-2012-0817 | x_refsource_CONFIRMPatchVendor Advisory | |
| https://access.redhat.com/security/cve/CVE-2012-0817 | Vendor Advisory | |
| https://bugzilla.redhat.com/show_bug.cgi?id=785746 | Issue Tracking | |
| https://nvd.nist.gov/vuln/detail/CVE-2012-0817 | ||
| https://www.cve.org/CVERecord?id=CVE-2012-0817 |
Change history (0)
No recorded changes yet.