| 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-2024-38544: RDMA/rxe: Fix seg fault in rxe_comp_queue_pkt |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| RDMA/rxe: Fix seg fault in rxe_comp_queue_pkt |
| |
| In rxe_comp_queue_pkt() an incoming response packet skb is enqueued to the |
| resp_pkts queue and then a decision is made whether to run the completer |
| task inline or schedule it. Finally the skb is dereferenced to bump a 'hw' |
| performance counter. This is wrong because if the completer task is |
| already running in a separate thread it may have already processed the skb |
| and freed it which can cause a seg fault. This has been observed |
| infrequently in testing at high scale. |
| |
| This patch fixes this by changing the order of enqueuing the packet until |
| after the counter is accessed. |
| |
| The Linux kernel CVE team has assigned CVE-2024-38544 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Issue introduced in 4.12 with commit 0b1e5b99a48b5b810e3e38f1d6e0d39306b99ec0 and fixed in 5.4.285 with commit c91fb72a2ca6480d8d77262eef52dc5b178463a3 |
| Issue introduced in 4.12 with commit 0b1e5b99a48b5b810e3e38f1d6e0d39306b99ec0 and fixed in 5.10.227 with commit de5a059e36657442b5637cc16df5163e435b9cb4 |
| Issue introduced in 4.12 with commit 0b1e5b99a48b5b810e3e38f1d6e0d39306b99ec0 and fixed in 5.15.168 with commit e0e14dd35d4242340c7346aac60c7ff8fbf87ffc |
| Issue introduced in 4.12 with commit 0b1e5b99a48b5b810e3e38f1d6e0d39306b99ec0 and fixed in 6.1.93 with commit faa8d0ecf6c9c7c2ace3ca3e552180ada6f75e19 |
| Issue introduced in 4.12 with commit 0b1e5b99a48b5b810e3e38f1d6e0d39306b99ec0 and fixed in 6.6.33 with commit 21b4c6d4d89030fd4657a8e7c8110fd941049794 |
| Issue introduced in 4.12 with commit 0b1e5b99a48b5b810e3e38f1d6e0d39306b99ec0 and fixed in 6.8.12 with commit bbad88f111a1829f366c189aa48e7e58e57553fc |
| Issue introduced in 4.12 with commit 0b1e5b99a48b5b810e3e38f1d6e0d39306b99ec0 and fixed in 6.9.3 with commit 30df4bef8b8e183333e9b6e9d4509d552c7da6eb |
| Issue introduced in 4.12 with commit 0b1e5b99a48b5b810e3e38f1d6e0d39306b99ec0 and fixed in 6.10 with commit 2b23b6097303ed0ba5f4bc036a1c07b6027af5c6 |
| |
| 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-2024-38544 |
| 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: |
| drivers/infiniband/sw/rxe/rxe_comp.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/c91fb72a2ca6480d8d77262eef52dc5b178463a3 |
| https://git.kernel.org/stable/c/de5a059e36657442b5637cc16df5163e435b9cb4 |
| https://git.kernel.org/stable/c/e0e14dd35d4242340c7346aac60c7ff8fbf87ffc |
| https://git.kernel.org/stable/c/faa8d0ecf6c9c7c2ace3ca3e552180ada6f75e19 |
| https://git.kernel.org/stable/c/21b4c6d4d89030fd4657a8e7c8110fd941049794 |
| https://git.kernel.org/stable/c/bbad88f111a1829f366c189aa48e7e58e57553fc |
| https://git.kernel.org/stable/c/30df4bef8b8e183333e9b6e9d4509d552c7da6eb |
| https://git.kernel.org/stable/c/2b23b6097303ed0ba5f4bc036a1c07b6027af5c6 |
