Description
The cxgb_extension_ioctl function in drivers/net/cxgb3/cxgb3_main.c in the Linux kernel before 2.6.36-rc5 does not properly initialize a certain structure member, which allows local users to obtain potentially sensitive information from kernel stack memory via a CHELSIO_GET_QSET_NUM ioctl call.
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 6 | perf +13 | 2.6.32-71.24.1.el6 | RHSA-2011:0421 |
| RHEL 5 | kernel +12 | 2.6.18-238.el5 | RHSA-2011:0017 |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Red Hat MRG 1 | perf +10 | 2.6.33.7-rt29.45.el5rt | RHSA-2010:0771 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | kernel-source | 4.8.13-1.1 | openSUSE-SU-2024:10128-1 |
Advisories 5
- RHSA-2011:0421 Red Hat Security Advisory: kernel security and bug fix update Red Hat Security Advisories (RHSA) · Jun 28, 2026
- RHSA-2011:0017 Red Hat Security Advisory: Red Hat Enterprise Linux 5.6 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
- openSUSE-SU-2024:10128-1 kernel-debug-4.8.13-1.1 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
- RHSA-2010:0771 Red Hat Security Advisory: kernel-rt security and bug fix update Red Hat Security Advisories (RHSA) · Jan 14, 2026
References
- http://www.kernel.org/pub/linux/kernel/v2.6/testing/ChangeLog-2.6.36-rc5
- 20111013 VMSA-2011-0012 VMware ESXi and ESX updates to third party libraries and ESX Service Console mailing-list
- RHSA-2011:0017 vendor-advisory
- 46397 third-party-advisory
- [oss-security] 20100914 Re: CVE request: kernel: numerous infoleaks mailing-list
- [oss-security] 20100914 CVE request: kernel: numerous infoleaks mailing-list
- [linux-kernel] 20100911 [PATCH] drivers/net/cxgb3/cxgb3_main.c: prevent reading uninitialized stack memory mailing-list
- http://git.kernel.org/?p=linux/kernel/git/davem/net-2.6.git%3Ba=commit%3Bh=49c37c0334a9b85d30ab3d6b5d1acb05ef2ef6de
- USN-1041-1 vendor-advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=633149
- SUSE-SA:2011:007 vendor-advisory
- ADV-2011-0298 vdb-entry
- SUSE-SA:2010:050 vendor-advisory
- http://www.vmware.com/security/advisories/VMSA-2011-0012.html
- 42758 third-party-advisory
- 42884 third-party-advisory
- ADV-2011-0070 vdb-entry
- SUSE-SA:2010:054 vendor-advisory
- 41440 third-party-advisory
- 43221 vdb-entry
- DSA-2126 vendor-advisory