| 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-2023-53030: octeontx2-pf: Avoid use of GFP_KERNEL in atomic context |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| octeontx2-pf: Avoid use of GFP_KERNEL in atomic context |
| |
| Using GFP_KERNEL in preemption disable context, causing below warning |
| when CONFIG_DEBUG_ATOMIC_SLEEP is enabled. |
| |
| [ 32.542271] BUG: sleeping function called from invalid context at include/linux/sched/mm.h:274 |
| [ 32.550883] in_atomic(): 1, irqs_disabled(): 0, non_block: 0, pid: 1, name: swapper/0 |
| [ 32.558707] preempt_count: 1, expected: 0 |
| [ 32.562710] RCU nest depth: 0, expected: 0 |
| [ 32.566800] CPU: 3 PID: 1 Comm: swapper/0 Tainted: G W 6.2.0-rc2-00269-gae9dcb91c606 #7 |
| [ 32.576188] Hardware name: Marvell CN106XX board (DT) |
| [ 32.581232] Call trace: |
| [ 32.583670] dump_backtrace.part.0+0xe0/0xf0 |
| [ 32.587937] show_stack+0x18/0x30 |
| [ 32.591245] dump_stack_lvl+0x68/0x84 |
| [ 32.594900] dump_stack+0x18/0x34 |
| [ 32.598206] __might_resched+0x12c/0x160 |
| [ 32.602122] __might_sleep+0x48/0xa0 |
| [ 32.605689] __kmem_cache_alloc_node+0x2b8/0x2e0 |
| [ 32.610301] __kmalloc+0x58/0x190 |
| [ 32.613610] otx2_sq_aura_pool_init+0x1a8/0x314 |
| [ 32.618134] otx2_open+0x1d4/0x9d0 |
| |
| To avoid use of GFP_ATOMIC for memory allocation, disable preemption |
| after all memory allocation is done. |
| |
| The Linux kernel CVE team has assigned CVE-2023-53030 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Issue introduced in 5.15.87 with commit 6ea5273c71dd2d07c0a2459594eb34bc087939f7 and fixed in 5.15.91 with commit 2827c4eb429db64befdca11362e2b1c5f524f6ba |
| Issue introduced in 6.1.5 with commit 667ce030bdfb62a86266444b2c3fd6ab98b9df9b and fixed in 6.1.8 with commit 1eb57b87f106c90cee6b2a56a10f2e29c7a25f3e |
| Issue introduced in 6.0.19 with commit b754dc7c933dd9464223f64b10d33d68ab086cc6 |
| |
| 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-2023-53030 |
| 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/net/ethernet/marvell/octeontx2/nic/otx2_common.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/2827c4eb429db64befdca11362e2b1c5f524f6ba |
| https://git.kernel.org/stable/c/1eb57b87f106c90cee6b2a56a10f2e29c7a25f3e |
| https://git.kernel.org/stable/c/87b93b678e95c7d93fe6a55b0e0fbda26d8c7760 |
