Description
net/ipv4/inet_diag.c in the Linux kernel before 2.6.37-rc2 does not properly audit INET_DIAG bytecode, which allows local users to cause a denial of service (kernel infinite loop) via crafted INET_DIAG_REQ_BYTECODE instructions in a netlink message that contains multiple attribute elements, as demonstrated by INET_DIAG_BC_JMP instructions.
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 +14 | 2.6.32-71.14.1.el6 | RHSA-2011:0007 |
| RHEL 5 | kernel +12 | 2.6.18-194.32.1.el5 | RHSA-2011:0004 |
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-rt29.47.el5rt | RHSA-2010:0958 |
Advisories 4
- RHSA-2011:0004 Red Hat Security Advisory: kernel security, bug fix, and enhancement update Red Hat Security Advisories (RHSA) · Jun 28, 2026
- RHSA-2011:0007 Red Hat Security Advisory: kernel security and bug fix update Red Hat Security Advisories (RHSA) · Jun 28, 2026
- RHSA-2010:0958 Red Hat Security Advisory: kernel-rt security and bug fix update Red Hat Security Advisories (RHSA) · Jun 28, 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
- 20111013 VMSA-2011-0012 VMware ESXi and ESX updates to third party libraries and ESX Service Console mailing-list
- 46397 third-party-advisory
- http://www.kernel.org/pub/linux/kernel/v2.6/testing/ChangeLog-2.6.37-rc2
- 44665 vdb-entry
- https://bugzilla.redhat.com/show_bug.cgi?id=651264
- RHSA-2011:0007 vendor-advisory
- RHSA-2010:0958 vendor-advisory
- http://www.vmware.com/security/advisories/VMSA-2011-0012.html
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=22e76c849d505d87c5ecf3d3e6742a65f0ff4860
- 42890 third-party-advisory
- [oss-security] 20101105 Re: CVE request: kernel: logic error in INET_DIAG bytecode auditing mailing-list
- 42126 third-party-advisory
- [netdev] 20101103 [PATCH 2/2] inet_diag: Make sure we actually run the same bytecode we audited. mailing-list
- [oss-security] 20101104 CVE request: kernel: logic error in INET_DIAG bytecode auditing mailing-list
- DSA-2126 vendor-advisory