Description
The nft_flush_table function in net/netfilter/nf_tables_api.c in the Linux kernel before 3.18.5 mishandles the interaction between cross-chain jumps and ruleset flushes, which allows local users to cause a denial of service (panic) by leveraging the CAP_NET_ADMIN capability.
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 7 | kernel-kdump +4 | 3.10.0-229.7.2.el7 | RHSA-2015:1137 |
| RHEL 7 | kernel-rt +7 | 3.10.0-229.7.2.rt56.141.6.el7_1 | RHSA-2015:1139 |
| RHEL 7 | perf +13 | 3.10.0-229.7.2.ael7b | RHSA-2015:1137 |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Red Hat MRG 2 | kernel-rt +10 | 1:3.10.0-229.rt56.153.el6rt | RHSA-2015:1138 |
Oracle Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Oracle Linux 7 | perf +11 | 3.10.0-229.7.2.el7 | ELSA-2015-1137 |
Advisories 4
- RHSA-2015:1138 Red Hat Security Advisory: kernel-rt security, bug fix, and enhancement update Red Hat Security Advisories (RHSA) · Jun 29, 2026
- RHSA-2015:1139 Red Hat Security Advisory: kernel-rt security, bug fix, and enhancement update Red Hat Security Advisories (RHSA) · Jun 29, 2026
- RHSA-2015:1137 Red Hat Security Advisory: kernel security and bug fix update Red Hat Security Advisories (RHSA) · Jun 29, 2026
- ELSA-2015-1137 Important: kernel security and bug fix update (Oracle Linux 7) Oracle Linux Security Advisories (ELSA) · Jun 23, 2015
References
- https://bugzilla.redhat.com/show_bug.cgi?id=1190966
- https://github.com/torvalds/linux/commit/a2f18db0c68fec96631c10cad9384c196e9008ac
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=a2f18db0c68fec96631c10cad9384c196e9008ac
- RHSA-2015:1138 vendor-advisory
- http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.18.5
- 72552 vdb-entry
- [oss-security] 20150210 Re: CVE-Request -- Linux kernel - panic on nftables rule flush mailing-list
- RHSA-2015:1137 vendor-advisory