| 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-2022-49344: af_unix: Fix a data-race in unix_dgram_peer_wake_me(). |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| af_unix: Fix a data-race in unix_dgram_peer_wake_me(). |
| |
| unix_dgram_poll() calls unix_dgram_peer_wake_me() without `other`'s |
| lock held and check if its receive queue is full. Here we need to |
| use unix_recvq_full_lockless() instead of unix_recvq_full(), otherwise |
| KCSAN will report a data-race. |
| |
| The Linux kernel CVE team has assigned CVE-2022-49344 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Issue introduced in 4.4 with commit 7d267278a9ece963d77eefec61630223fce08c6c and fixed in 4.19.247 with commit 95f0ba806277733bf6024e23e27e1be773701cca |
| Issue introduced in 4.4 with commit 7d267278a9ece963d77eefec61630223fce08c6c and fixed in 5.4.198 with commit 556720013c36c193d9cbfb06e7b33e51f0c39fbf |
| Issue introduced in 4.4 with commit 7d267278a9ece963d77eefec61630223fce08c6c and fixed in 5.10.122 with commit c61848500a3fd6867dfa4834b8c7f97133eceb9f |
| Issue introduced in 4.4 with commit 7d267278a9ece963d77eefec61630223fce08c6c and fixed in 5.15.47 with commit c926ae58f24f7bd55aa2ea4add9f952032507913 |
| Issue introduced in 4.4 with commit 7d267278a9ece963d77eefec61630223fce08c6c and fixed in 5.17.15 with commit 71e8bfc7f838cabc60cba24e09ca84c4f8321ab2 |
| Issue introduced in 4.4 with commit 7d267278a9ece963d77eefec61630223fce08c6c and fixed in 5.18.4 with commit 8801eb3ccd2e4e3b1a01449383e3321ae6dbd9d6 |
| Issue introduced in 4.4 with commit 7d267278a9ece963d77eefec61630223fce08c6c and fixed in 5.19 with commit 662a80946ce13633ae90a55379f1346c10f0c432 |
| Issue introduced in 2.6.32.70 with commit 60bc010667ef06e0fb08d5ec599c0977adc2ac72 |
| Issue introduced in 3.2.75 with commit a3b0f6e8a21ef02f69a15abac440572d8cde8c2a |
| Issue introduced in 3.4.111 with commit ec54d5ae9d298abf01c273233de9f2bc25d80475 |
| Issue introduced in 3.10.95 with commit da8db0830a2ce63f628150307a01a315f5081202 |
| Issue introduced in 3.12.52 with commit 9964b4c4ee925b2910723e509abd7241cff1ef84 |
| Issue introduced in 3.14.59 with commit 9d054f57adc981a5f503d5eb9b259aa450b90dc5 |
| Issue introduced in 3.18.26 with commit 72032798034d921ed565e3bf8dfdc3098f6473e2 |
| Issue introduced in 4.1.15 with commit 5c77e26862ce604edea05b3442ed765e9756fe0f |
| Issue introduced in 4.2.8 with commit bad967fdd8ecbdd171f5f243657be033d2d081a7 |
| Issue introduced in 4.3.3 with commit 58a6a46a036ce81a2a8ecaa6fc1537c894349e3f |
| |
| 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-2022-49344 |
| 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/unix/af_unix.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/95f0ba806277733bf6024e23e27e1be773701cca |
| https://git.kernel.org/stable/c/556720013c36c193d9cbfb06e7b33e51f0c39fbf |
| https://git.kernel.org/stable/c/c61848500a3fd6867dfa4834b8c7f97133eceb9f |
| https://git.kernel.org/stable/c/c926ae58f24f7bd55aa2ea4add9f952032507913 |
| https://git.kernel.org/stable/c/71e8bfc7f838cabc60cba24e09ca84c4f8321ab2 |
| https://git.kernel.org/stable/c/8801eb3ccd2e4e3b1a01449383e3321ae6dbd9d6 |
| https://git.kernel.org/stable/c/662a80946ce13633ae90a55379f1346c10f0c432 |
