Description
Multiple integer signedness errors in the TIPC implementation in the Linux kernel before 2.6.36.2 allow local users to gain privileges via a crafted sendmsg call that triggers a heap-based buffer overflow, related to the tipc_msg_build function in net/tipc/msg.c and the verify_iovec function in net/core/iovec.c.
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 5.0 | linux-2.6 | 2.6.26-26lenny1 | DSA-2126-1 |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 5 | kernel +12 | 2.6.18-194.32.1.el5 | RHSA-2011:0004 |
| RHEL 4 | kernel +10 | 2.6.9-89.35.1.EL | RHSA-2011:0162 |
Advisories 3
- RHSA-2011:0004 Red Hat Security Advisory: kernel security, bug fix, and enhancement update Red Hat Security Advisories (RHSA) · Jun 28, 2026
- RHSA-2011:0162 Red Hat Security Advisory: kernel security and bug fix update Red Hat Security Advisories (RHSA) · Jun 26, 2026
- DSA-2126-1 linux-2.6 - several issues Debian Security (DSA / DLA) · Mar 9, 2026
References
- 42789 third-party-advisory
- ADV-2011-0024 vdb-entry
- RHSA-2011:0004 vendor-advisory
- [netdev] 20101021 TIPC security issues mailing-list
- [netdev] 20101027 [PATCH 4/4] tipc: Fix bugs in sending of large amounts of byte-stream data mailing-list
- 20111013 VMSA-2011-0012 VMware ESXi and ESX updates to third party libraries and ESX Service Console mailing-list
- 46397 third-party-advisory
- [netdev] 20101027 [PATCH 1/4] tipc: Fix bugs in tipc_msg_calc_data_size() mailing-list
- https://bugzilla.redhat.com/show_bug.cgi?id=645867
- [netdev] 20101027 [PATCH 0/4] RFC: tipc int vs size_t fixes mailing-list
- [netdev] 20101028 Re: [PATCH 2/4] tipc: Fix bugs in tipc_msg_build() mailing-list
- http://www.kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.36.2
- [oss-security] 20101022 CVE request: kernel: heap overflow in TIPC mailing-list
- 42963 third-party-advisory
- 44354 vdb-entry
- [netdev] 20101027 [PATCH 3/4] tipc: Update arguments to use size_t for iovec array sizes mailing-list
- http://www.vmware.com/security/advisories/VMSA-2011-0012.html
- RHSA-2011:0162 vendor-advisory
- [netdev] 20101027 [PATCH 2/4] tipc: Fix bugs in tipc_msg_build() mailing-list
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=8acfe468b0384e834a303f08ebc4953d72fb690a
- ADV-2011-0168 vdb-entry
- MDVSA-2011:029 vendor-advisory
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=253eacc070b114c2ec1f81b067d2fed7305467b0
- [netdev] 20101027 Re: [PATCH 1/4] tipc: Fix bugs in tipc_msg_calc_data_size() mailing-list
- [oss-security] 20101022 Re: CVE request: kernel: heap overflow in TIPC mailing-list
- DSA-2126 vendor-advisory