| From bippy-1.1.0 Mon Sep 17 00:00:00 2001 |
| From: Greg Kroah-Hartman <gregkh@kernel.org> |
| To: <linux-cve-announce@vger.kernel.org> |
| Reply-to: <cve@kernel.org>, <linux-kernel@vger.kernel.org> |
| Subject: CVE-2022-49919: netfilter: nf_tables: release flow rule object from commit path |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| netfilter: nf_tables: release flow rule object from commit path |
| |
| No need to postpone this to the commit release path, since no packets |
| are walking over this object, this is accessed from control plane only. |
| This helped uncovered UAF triggered by races with the netlink notifier. |
| |
| The Linux kernel CVE team has assigned CVE-2022-49919 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Issue introduced in 5.4.198 with commit 5b8d63489c3b701eb2a76f848ec94d8cbc9373b9 and fixed in 5.4.224 with commit 74fd5839467054cd9c4d050614d3ee8788386171 |
| Issue introduced in 5.10.122 with commit 330c0c6cd2150a2d7f47af16aa590078b0d2f736 and fixed in 5.10.154 with commit b2d7a92aff0fbd93c29d2aa6451fb99f050e2c4e |
| Issue introduced in 5.15.47 with commit e33d9bd563e71f6c6528b96008d65524a459c4dc and fixed in 5.15.78 with commit 6044791b7be707fd0e709f26e961a446424e5051 |
| Issue introduced in 5.19 with commit 9dd732e0bdf538b1b76dc7c157e2b5e560ff30d3 and fixed in 6.0.8 with commit 4ab6f96444e936f5e4a936d5c0bc948144bcded3 |
| Issue introduced in 5.19 with commit 9dd732e0bdf538b1b76dc7c157e2b5e560ff30d3 and fixed in 6.1 with commit 26b5934ff4194e13196bedcba373cd4915071d0e |
| Issue introduced in 5.17.15 with commit 80de9ea1f5b808a6601e91111fae601df2b26369 |
| Issue introduced in 5.18.4 with commit ab9f34a30c23f656e76f4c5b83125a4e7b53c86e |
| |
| Please see https://www.kernel.org for a full list of currently supported |
| kernel versions by the kernel community. |
| |
| Unaffected versions might change over time as fixes are backported to |
| older supported kernel versions. The official CVE entry at |
| https://cve.org/CVERecord/?id=CVE-2022-49919 |
| will be updated if fixes are backported, please check that for the most |
| up to date information about this issue. |
| |
| |
| Affected files |
| ============== |
| |
| The file(s) affected by this issue are: |
| net/netfilter/nf_tables_api.c |
| |
| |
| Mitigation |
| ========== |
| |
| The Linux kernel CVE team recommends that you update to the latest |
| stable kernel version for this, and many other bugfixes. Individual |
| changes are never tested alone, but rather are part of a larger kernel |
| release. Cherry-picking individual commits is not recommended or |
| supported by the Linux kernel community at all. If however, updating to |
| the latest release is impossible, the individual changes to resolve this |
| issue can be found at these commits: |
| https://git.kernel.org/stable/c/74fd5839467054cd9c4d050614d3ee8788386171 |
| https://git.kernel.org/stable/c/b2d7a92aff0fbd93c29d2aa6451fb99f050e2c4e |
| https://git.kernel.org/stable/c/6044791b7be707fd0e709f26e961a446424e5051 |
| https://git.kernel.org/stable/c/4ab6f96444e936f5e4a936d5c0bc948144bcded3 |
| https://git.kernel.org/stable/c/26b5934ff4194e13196bedcba373cd4915071d0e |
