Description
The hso_get_count function in drivers/net/usb/hso.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 TIOCGICOUNT 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.
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 6 | perf +14 | 2.6.32-71.14.1.el6 | RHSA-2011:0007 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | kernel-source | 4.8.13-1.1 | openSUSE-SU-2024:10128-1 |
Advisories 2
- RHSA-2011:0007 Red Hat Security Advisory: kernel security and bug fix update Red Hat Security Advisories (RHSA) · Jun 28, 2026
- openSUSE-SU-2024:10128-1 kernel-debug-4.8.13-1.1 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
References
- http://www.kernel.org/pub/linux/kernel/v2.6/testing/ChangeLog-2.6.36-rc5
- http://git.kernel.org/?p=linux/kernel/git/davem/net-2.6.git%3Ba=commit%3Bh=7011e660938fc44ed86319c18a5954e95a82ab3e
- [oss-security] 20100914 Re: CVE request: kernel: numerous infoleaks mailing-list
- [oss-security] 20100914 CVE request: kernel: numerous infoleaks mailing-list
- USN-1041-1 vendor-advisory
- RHSA-2011:0007 vendor-advisory
- SUSE-SA:2011:007 vendor-advisory
- [linux-kernel] 20100911 [PATCH] drivers/net/usb/hso.c: prevent reading uninitialized memory mailing-list
- ADV-2011-0298 vdb-entry
- SUSE-SA:2010:050 vendor-advisory
- 42758 third-party-advisory
- 42890 third-party-advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=633140
- 43226 vdb-entry
- ADV-2011-0070 vdb-entry
- 41440 third-party-advisory