| From bippy-5f407fcff5a0 Mon Sep 17 00:00:00 2001 |
| From: Greg Kroah-Hartman <gregkh@linuxfoundation.org> |
| To: <linux-cve-announce@vger.kernel.org> |
| Reply-to: <cve@kernel.org>, <linux-kernel@vger.kernel.org> |
| Subject: CVE-2022-48911: netfilter: nf_queue: fix possible use-after-free |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| netfilter: nf_queue: fix possible use-after-free |
| |
| Eric Dumazet says: |
| The sock_hold() side seems suspect, because there is no guarantee |
| that sk_refcnt is not already 0. |
| |
| On failure, we cannot queue the packet and need to indicate an |
| error. The packet will be dropped by the caller. |
| |
| v2: split skb prefetch hunk into separate change |
| |
| The Linux kernel CVE team has assigned CVE-2022-48911 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Issue introduced in 2.6.29 with commit 271b72c7fa82c2c7a795bc16896149933110672d and fixed in 4.9.305 with commit 21b27b2baa27423286e9b8d3f0b194d587083d95 |
| Issue introduced in 2.6.29 with commit 271b72c7fa82c2c7a795bc16896149933110672d and fixed in 4.14.270 with commit ef97921ccdc243170fcef857ba2a17cf697aece5 |
| Issue introduced in 2.6.29 with commit 271b72c7fa82c2c7a795bc16896149933110672d and fixed in 4.19.233 with commit 34dc4a6a7f261736ef7183868a5bddad31c7f9e3 |
| Issue introduced in 2.6.29 with commit 271b72c7fa82c2c7a795bc16896149933110672d and fixed in 5.4.183 with commit 43c25da41e3091b31a906651a43e80a2719aa1ff |
| Issue introduced in 2.6.29 with commit 271b72c7fa82c2c7a795bc16896149933110672d and fixed in 5.10.104 with commit 4d05239203fa38ea8a6f31e228460da4cb17a71a |
| Issue introduced in 2.6.29 with commit 271b72c7fa82c2c7a795bc16896149933110672d and fixed in 5.15.27 with commit dd648bd1b33a828f62befa696b206c688da0ec43 |
| Issue introduced in 2.6.29 with commit 271b72c7fa82c2c7a795bc16896149933110672d and fixed in 5.16.13 with commit dcc3cb920bf7ba66ac5e9272293a9ba5f80917ee |
| Issue introduced in 2.6.29 with commit 271b72c7fa82c2c7a795bc16896149933110672d and fixed in 5.17 with commit c3873070247d9e3c7a6b0cf9bf9b45e8018427b1 |
| |
| 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-2022-48911 |
| 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: |
| include/net/netfilter/nf_queue.h |
| net/netfilter/nf_queue.c |
| net/netfilter/nfnetlink_queue.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/21b27b2baa27423286e9b8d3f0b194d587083d95 |
| https://git.kernel.org/stable/c/ef97921ccdc243170fcef857ba2a17cf697aece5 |
| https://git.kernel.org/stable/c/34dc4a6a7f261736ef7183868a5bddad31c7f9e3 |
| https://git.kernel.org/stable/c/43c25da41e3091b31a906651a43e80a2719aa1ff |
| https://git.kernel.org/stable/c/4d05239203fa38ea8a6f31e228460da4cb17a71a |
| https://git.kernel.org/stable/c/dd648bd1b33a828f62befa696b206c688da0ec43 |
| https://git.kernel.org/stable/c/dcc3cb920bf7ba66ac5e9272293a9ba5f80917ee |
| https://git.kernel.org/stable/c/c3873070247d9e3c7a6b0cf9bf9b45e8018427b1 |
