kernel: sctp: fix to calc the INIT/INIT-ACK chunk length correctly to set
Published Feb 2, 2012
5.9
MEDIUMCVSS 3.1
EPSS 2.67%
Description
net/sctp/sm_make_chunk.c in the Linux kernel before 2.6.34, when addip_enable and auth_enable are used, does not consider the amount of zero padding during calculation of chunk lengths for (1) INIT and (2) INIT ACK chunks, which allows remote attackers to cause a denial of service (OOPS) via crafted packet data.
Affected products
No data.
- < 2.6.34
No data.
Red Hat Enterprise Linux 5
kernel-0:2.6.18-238.19.1.el5
Fixed · RHSA-2011:0927
Red Hat Enterprise Linux 6
kernel-0:2.6.32-71.29.1.el6
Fixed · RHSA-2011:0498
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 5 | kernel-0:2.6.18-238.19.1.el5 | Fixed | RHSA-2011:0927 |
| Red Hat Enterprise Linux 6 | kernel-0:2.6.32-71.29.1.el6 | Fixed | RHSA-2011:0498 |
No package ranges for this CVE.
Remediation
Red Hat statement
This issue did not affect the version of Linux kernel as shipped with Red Hat Enterprise Linux 4 as it did not support SCTP authentication and extended parameters. It did not affect the version of Linux kernel as shipped with Red Hat Enterprise MRG as it has backported the upstream commit a8170c35 that addressed this. This has been addressed in Red Hat Enterprise Linux 5 and 6 via https://rhn.redhat.com/errata/RHSA-2011-0927.html and https://rhn.redhat.com/errata/RHSA-2011-0498.html.
Metrics
No CVSS v4.0 score for this CVE.
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
No CVSS v3.0 score for this CVE.
AV:N/AC:M/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 (11 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 2.67% (0.02668) | 85.22th | v5 (v2026.06.15) |
| Jun 15, 2026 | 2.78% (0.02778) | 84.45th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.86% (0.00856) | 73.37th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.97% (0.00975) | 84.06th | v3 (v2023.03.01) |
| Feb 21, 2024 | 0.97% (0.00975) | 82.92th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.96% (0.00960) | 80.90th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.32% (0.01319) | 71.27th | v2 (v2022.01.01) |
| Feb 13, 2023 | 1.32% (0.01319) | 70.74th | v2 (v2022.01.01) |
| Feb 3, 2023 | 1.97% (0.01974) | 78.39th | 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 (9)
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=a8170c35e738d62e9919ce5b109cf4ed66e95bde x_refsource_CONFIRM
- http://mirror.anl.gov/pub/linux/kernel/v2.6/ChangeLog-2.6.34 x_refsource_CONFIRMBroken Link
- http://openwall.com/lists/oss-security/2011/04/11/12 mailing-listx_refsource_MLISTMailing ListPatchThird Party Advisory
- http://openwall.com/lists/oss-security/2011/04/11/4 mailing-listx_refsource_MLISTMailing ListPatchThird Party Advisory
- http://rhn.redhat.com/errata/RHSA-2011-0927.html vendor-advisoryx_refsource_REDHATThird Party Advisory
- https://access.redhat.com/security/cve/CVE-2011-1573 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=695383 x_refsource_CONFIRMExploitIssue TrackingPatchThird Party Advisory
- https://nvd.nist.gov/vuln/detail/CVE-2011-1573
- https://www.cve.org/CVERecord?id=CVE-2011-1573
| Link | Providers | Tags |
|---|---|---|
| http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=a8170c35e738d62e9919ce5b109cf4ed66e95bde | x_refsource_CONFIRM | |
| http://mirror.anl.gov/pub/linux/kernel/v2.6/ChangeLog-2.6.34 | x_refsource_CONFIRMBroken Link | |
| http://openwall.com/lists/oss-security/2011/04/11/12 | mailing-listx_refsource_MLISTMailing ListPatchThird Party Advisory | |
| http://openwall.com/lists/oss-security/2011/04/11/4 | mailing-listx_refsource_MLISTMailing ListPatchThird Party Advisory | |
| http://rhn.redhat.com/errata/RHSA-2011-0927.html | vendor-advisoryx_refsource_REDHATThird Party Advisory | |
| https://access.redhat.com/security/cve/CVE-2011-1573 | Vendor Advisory | |
| https://bugzilla.redhat.com/show_bug.cgi?id=695383 | x_refsource_CONFIRMExploitIssue TrackingPatchThird Party Advisory | |
| https://nvd.nist.gov/vuln/detail/CVE-2011-1573 | ||
| https://www.cve.org/CVERecord?id=CVE-2011-1573 |
Change history (0)
No recorded changes yet.