Description
fs/cifs/cifssmb.c in the CIFS implementation in the Linux kernel before 2.6.34-rc4 allows remote attackers to cause a denial of service (panic) via an SMB response packet with an invalid CountHigh value, as demonstrated by a response from an OS/2 server, related to the CIFSSMBWrite and CIFSSMBWrite2 functions.
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 | 2.6.26-24lenny1 | DSA-2094-1 |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 5 | kernel +12 | 2.6.18-194.11.1.el5 | RHSA-2010:0610 |
| RHEL 4 | kernel +10 | 2.6.9-89.0.28.EL | RHSA-2010:0606 |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Red Hat MRG 1 | kernel-rt +10 | 2.6.24.7-161.el5rt | RHSA-2010:0631 |
Advisories 4
- RHSA-2010:0631 Red Hat Security Advisory: kernel-rt security and bug fix update Red Hat Security Advisories (RHSA) · Jun 28, 2026
- RHSA-2010:0610 Red Hat Security Advisory: kernel security and bug fix update Red Hat Security Advisories (RHSA) · Jun 26, 2026
- RHSA-2010:0606 Red Hat Security Advisory: kernel security and bug fix update Red Hat Security Advisories (RHSA) · Jun 26, 2026
- DSA-2094-1 linux-2.6 - several issues Debian Security (DSA / DLA) · Mar 9, 2026
References
- RHSA-2010:0610 vendor-advisory
- USN-1000-1 vendor-advisory
- [oss-security] 20100628 CVE request - kernel: cifs: Fix a kernel BUG with remote OS/2 server mailing-list
- RHSA-2010:0606 vendor-advisory
- http://www.kernel.org/pub/linux/kernel/v2.6/testing/v2.6.34/ChangeLog-2.6.34-rc4
- MDVSA-2010:198 vendor-advisory
- 42242 vdb-entry
- SUSE-SA:2010:060 vendor-advisory
- [oss-security] 20100628 Re: CVE request - kernel: cifs: Fix a kernel BUG with remote OS/2 server mailing-list
- MDVSA-2011:051 vendor-advisory
- 43315 third-party-advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=608583
- DSA-2094 vendor-advisory
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=6513a81e9325d712f1bfb9a1d7b750134e49ff18
- http://www.vmware.com/security/advisories/VMSA-2011-0003.html
- 1024285 vdb-entry
- 20110211 VMSA-2011-0003 Third party component updates for VMware vCenter Server, vCenter Update Manager, ESXi and ESX mailing-list