| 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-2024-42252: closures: Change BUG_ON() to WARN_ON() |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| closures: Change BUG_ON() to WARN_ON() |
| |
| If a BUG_ON() can be hit in the wild, it shouldn't be a BUG_ON() |
| |
| For reference, this has popped up once in the CI, and we'll need more |
| info to debug it: |
| |
| 03240 ------------[ cut here ]------------ |
| 03240 kernel BUG at lib/closure.c:21! |
| 03240 kernel BUG at lib/closure.c:21! |
| 03240 Internal error: Oops - BUG: 00000000f2000800 [#1] SMP |
| 03240 Modules linked in: |
| 03240 CPU: 15 PID: 40534 Comm: kworker/u80:1 Not tainted 6.10.0-rc4-ktest-ga56da69799bd #25570 |
| 03240 Hardware name: linux,dummy-virt (DT) |
| 03240 Workqueue: btree_update btree_interior_update_work |
| 03240 pstate: 00001005 (nzcv daif -PAN -UAO -TCO -DIT +SSBS BTYPE=--) |
| 03240 pc : closure_put+0x224/0x2a0 |
| 03240 lr : closure_put+0x24/0x2a0 |
| 03240 sp : ffff0000d12071c0 |
| 03240 x29: ffff0000d12071c0 x28: dfff800000000000 x27: ffff0000d1207360 |
| 03240 x26: 0000000000000040 x25: 0000000000000040 x24: 0000000000000040 |
| 03240 x23: ffff0000c1f20180 x22: 0000000000000000 x21: ffff0000c1f20168 |
| 03240 x20: 0000000040000000 x19: ffff0000c1f20140 x18: 0000000000000001 |
| 03240 x17: 0000000000003aa0 x16: 0000000000003ad0 x15: 1fffe0001c326974 |
| 03240 x14: 0000000000000a1e x13: 0000000000000000 x12: 1fffe000183e402d |
| 03240 x11: ffff6000183e402d x10: dfff800000000000 x9 : ffff6000183e402e |
| 03240 x8 : 0000000000000001 x7 : 00009fffe7c1bfd3 x6 : ffff0000c1f2016b |
| 03240 x5 : ffff0000c1f20168 x4 : ffff6000183e402e x3 : ffff800081391954 |
| 03240 x2 : 0000000000000001 x1 : 0000000000000000 x0 : 00000000a8000000 |
| 03240 Call trace: |
| 03240 closure_put+0x224/0x2a0 |
| 03240 bch2_check_for_deadlock+0x910/0x1028 |
| 03240 bch2_six_check_for_deadlock+0x1c/0x30 |
| 03240 six_lock_slowpath.isra.0+0x29c/0xed0 |
| 03240 six_lock_ip_waiter+0xa8/0xf8 |
| 03240 __bch2_btree_node_lock_write+0x14c/0x298 |
| 03240 bch2_trans_lock_write+0x6d4/0xb10 |
| 03240 __bch2_trans_commit+0x135c/0x5520 |
| 03240 btree_interior_update_work+0x1248/0x1c10 |
| 03240 process_scheduled_works+0x53c/0xd90 |
| 03240 worker_thread+0x370/0x8c8 |
| 03240 kthread+0x258/0x2e8 |
| 03240 ret_from_fork+0x10/0x20 |
| 03240 Code: aa1303e0 d63f0020 a94363f7 17ffff8c (d4210000) |
| 03240 ---[ end trace 0000000000000000 ]--- |
| 03240 Kernel panic - not syncing: Oops - BUG: Fatal exception |
| 03240 SMP: stopping secondary CPUs |
| 03241 SMP: failed to stop secondary CPUs 13,15 |
| 03241 Kernel Offset: disabled |
| 03241 CPU features: 0x00,00000003,80000008,4240500b |
| 03241 Memory Limit: none |
| 03241 ---[ end Kernel panic - not syncing: Oops - BUG: Fatal exception ]--- |
| 03246 ========= FAILED TIMEOUT copygc_torture_no_checksum in 7200s |
| |
| The Linux kernel CVE team has assigned CVE-2024-42252 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Fixed in 6.1.120 with commit c894a74756478bb7aec894bcc513add3d554c0cf |
| Fixed in 6.6.64 with commit ecb4aaa658da760fb83afd79cc5fd4360aa60635 |
| Fixed in 6.9.11 with commit 5d85f2ab79d5918a66539ebf046c099f7448db8d |
| Fixed in 6.10 with commit 339b84ab6b1d66900c27bd999271cb2ae40ce812 |
| |
| 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-2024-42252 |
| 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: |
| lib/closure.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/c894a74756478bb7aec894bcc513add3d554c0cf |
| https://git.kernel.org/stable/c/ecb4aaa658da760fb83afd79cc5fd4360aa60635 |
| https://git.kernel.org/stable/c/5d85f2ab79d5918a66539ebf046c099f7448db8d |
| https://git.kernel.org/stable/c/339b84ab6b1d66900c27bd999271cb2ae40ce812 |
