kernel: sctp: a race between ICMP protocol unreachable and connect()
Published Jan 11, 2011
7.1
HIGHCVSS 2.0
EPSS 2.52%
Description
Race condition in the sctp_icmp_proto_unreachable function in net/sctp/input.c in Linux kernel 2.6.11-rc2 through 2.6.33 allows remote attackers to cause a denial of service (panic) via an ICMP unreachable message to a socket that is already locked by a user, which causes the socket to be freed and triggers list corruption, related to the sctp_wait_for_connect function.
Affected products
No data.
Configuration 1
- ≥ 2.6.11.1 · ≤ 2.6.33
- 2.6.11
- 2.6.11
- 2.6.11
- 2.6.11
Configuration 2
- 1.0
No data.
Red Hat Enterprise Linux 5
kernel-0:2.6.18-238.1.1.el5
Fixed · RHSA-2011:0163
Red Hat Enterprise Linux 6
kernel-0:2.6.32-71.24.1.el6
Fixed · RHSA-2011:0421
Red Hat Enterprise MRG 2
kernel-rt-0:2.6.33.9-rt31.75.el6rt
Fixed · RHSA-2011:1253
Red Hat Enterprise MRG 1
kernel-rt
Affected
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 5 | kernel-0:2.6.18-238.1.1.el5 | Fixed | RHSA-2011:0163 |
| Red Hat Enterprise Linux 6 | kernel-0:2.6.32-71.24.1.el6 | Fixed | RHSA-2011:0421 |
| Red Hat Enterprise MRG 2 | kernel-rt-0:2.6.33.9-rt31.75.el6rt | Fixed | RHSA-2011:1253 |
| Red Hat Enterprise MRG 1 | kernel-rt | Affected | n/a |
No package ranges for this CVE.
Remediation
Red Hat statement
The Linux kernel as shipped with Red Hat Enterprise Linux 4 did not include upstream commit history:5aabd1fe268e850c2e93048a5ccc5eb6970ac49c, and therefore is not affected by this issue. This has been addressed in Red Hat Enterprise Linux 5, 6 and Red Hat Enterprise MRG via http://rhn.redhat.com/errata/RHSA-2011-0163.html, https://rhn.redhat.com/errata/RHSA-2011-0421.html and https://rhn.redhat.com/errata/RHSA-2011-1253.html.
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:M/Au:N/C:N/I:N/A:C
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 | 2.52% (0.02523) | 84.30th | v5 (v2026.06.15) |
| Jun 15, 2026 | 2.52% (0.02523) | 82.75th | v5 (v2026.06.15) |
| Mar 17, 2025 | 2.06% (0.02057) | 82.69th | v4 (v2025.03.14) |
| Dec 17, 2024 | 3.82% (0.03817) | 91.77th | v3 (v2023.03.01) |
| Mar 7, 2023 | 6.24% (0.06235) | 92.43th | v3 (v2023.03.01) |
| Mar 6, 2023 | 2.17% (0.02172) | 80.77th | v2 (v2022.01.01) |
| Feb 13, 2023 | 2.17% (0.02172) | 80.28th | v2 (v2022.01.01) |
| Feb 3, 2023 | 3.78% (0.03779) | 85.12th | v2 (v2022.01.01) |
| Apr 1, 2022 | 2.17% (0.02172) | 78.91th | v2 (v2022.01.01) |
| Feb 4, 2022 | 2.17% (0.02172) | 57.73th | v2 (v2022.01.01) |
References (16)
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commitdiff%3Bh=50b5d6ad63821cea324a5a7a19854d4de1a0a819 x_refsource_CONFIRM
- http://secunia.com/advisories/42964 third-party-advisoryx_refsource_SECUNIABroken Link
- http://secunia.com/advisories/46397 third-party-advisoryx_refsource_SECUNIABroken Link
- http://www.openwall.com/lists/oss-security/2011/01/04/13 mailing-listx_refsource_MLISTMailing ListPatchThird Party Advisory
- http://www.openwall.com/lists/oss-security/2011/01/04/3 mailing-listx_refsource_MLISTMailing ListPatchThird Party Advisory
- http://www.redhat.com/support/errata/RHSA-2011-0163.html vendor-advisoryx_refsource_REDHATBroken Link
- http://www.securityfocus.com/archive/1/520102/100/0/threaded mailing-listx_refsource_BUGTRAQThird Party AdvisoryVDB Entry
- http://www.securityfocus.com/bid/45661 vdb-entryx_refsource_BIDThird Party AdvisoryVDB Entry
- http://www.vmware.com/security/advisories/VMSA-2011-0012.html x_refsource_CONFIRMThird Party Advisory
- http://www.vupen.com/english/advisories/2011/0169 vdb-entryx_refsource_VUPENBroken Link
- https://access.redhat.com/security/cve/CVE-2010-4526 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=664914 Issue Tracking
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2010-4526 x_refsource_CONFIRMIssue TrackingPatchThird Party Advisory
- https://exchange.xforce.ibmcloud.com/vulnerabilities/64616 vdb-entryx_refsource_XFThird Party AdvisoryVDB Entry
- https://nvd.nist.gov/vuln/detail/CVE-2010-4526
- https://www.cve.org/CVERecord?id=CVE-2010-4526
Change history (0)
No recorded changes yet.