| 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-2024-40907: ionic: fix kernel panic in XDP_TX action |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| ionic: fix kernel panic in XDP_TX action |
| |
| In the XDP_TX path, ionic driver sends a packet to the TX path with rx |
| page and corresponding dma address. |
| After tx is done, ionic_tx_clean() frees that page. |
| But RX ring buffer isn't reset to NULL. |
| So, it uses a freed page, which causes kernel panic. |
| |
| BUG: unable to handle page fault for address: ffff8881576c110c |
| PGD 773801067 P4D 773801067 PUD 87f086067 PMD 87efca067 PTE 800ffffea893e060 |
| Oops: Oops: 0000 [#1] PREEMPT SMP DEBUG_PAGEALLOC KASAN NOPTI |
| CPU: 1 PID: 25 Comm: ksoftirqd/1 Not tainted 6.9.0+ #11 |
| Hardware name: ASUS System Product Name/PRIME Z690-P D4, BIOS 0603 11/01/2021 |
| RIP: 0010:bpf_prog_f0b8caeac1068a55_balancer_ingress+0x3b/0x44f |
| Code: 00 53 41 55 41 56 41 57 b8 01 00 00 00 48 8b 5f 08 4c 8b 77 00 4c 89 f7 48 83 c7 0e 48 39 d8 |
| RSP: 0018:ffff888104e6fa28 EFLAGS: 00010283 |
| RAX: 0000000000000002 RBX: ffff8881576c1140 RCX: 0000000000000002 |
| RDX: ffffffffc0051f64 RSI: ffffc90002d33048 RDI: ffff8881576c110e |
| RBP: ffff888104e6fa88 R08: 0000000000000000 R09: ffffed1027a04a23 |
| R10: 0000000000000000 R11: 0000000000000000 R12: ffff8881b03a21a8 |
| R13: ffff8881589f800f R14: ffff8881576c1100 R15: 00000001576c1100 |
| FS: 0000000000000000(0000) GS:ffff88881ae00000(0000) knlGS:0000000000000000 |
| CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 |
| CR2: ffff8881576c110c CR3: 0000000767a90000 CR4: 00000000007506f0 |
| PKRU: 55555554 |
| Call Trace: |
| <TASK> |
| ? __die+0x20/0x70 |
| ? page_fault_oops+0x254/0x790 |
| ? __pfx_page_fault_oops+0x10/0x10 |
| ? __pfx_is_prefetch.constprop.0+0x10/0x10 |
| ? search_bpf_extables+0x165/0x260 |
| ? fixup_exception+0x4a/0x970 |
| ? exc_page_fault+0xcb/0xe0 |
| ? asm_exc_page_fault+0x22/0x30 |
| ? 0xffffffffc0051f64 |
| ? bpf_prog_f0b8caeac1068a55_balancer_ingress+0x3b/0x44f |
| ? do_raw_spin_unlock+0x54/0x220 |
| ionic_rx_service+0x11ab/0x3010 [ionic 9180c3001ab627d82bbc5f3ebe8a0decaf6bb864] |
| ? ionic_tx_clean+0x29b/0xc60 [ionic 9180c3001ab627d82bbc5f3ebe8a0decaf6bb864] |
| ? __pfx_ionic_tx_clean+0x10/0x10 [ionic 9180c3001ab627d82bbc5f3ebe8a0decaf6bb864] |
| ? __pfx_ionic_rx_service+0x10/0x10 [ionic 9180c3001ab627d82bbc5f3ebe8a0decaf6bb864] |
| ? ionic_tx_cq_service+0x25d/0xa00 [ionic 9180c3001ab627d82bbc5f3ebe8a0decaf6bb864] |
| ? __pfx_ionic_rx_service+0x10/0x10 [ionic 9180c3001ab627d82bbc5f3ebe8a0decaf6bb864] |
| ionic_cq_service+0x69/0x150 [ionic 9180c3001ab627d82bbc5f3ebe8a0decaf6bb864] |
| ionic_txrx_napi+0x11a/0x540 [ionic 9180c3001ab627d82bbc5f3ebe8a0decaf6bb864] |
| __napi_poll.constprop.0+0xa0/0x440 |
| net_rx_action+0x7e7/0xc30 |
| ? __pfx_net_rx_action+0x10/0x10 |
| |
| The Linux kernel CVE team has assigned CVE-2024-40907 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Issue introduced in 6.9 with commit 8eeed8373e1cca836799bf8e4a05cffa8e444908 and fixed in 6.9.6 with commit 8812aa35f3e930f61074b9c1ecea26f354992c21 |
| Issue introduced in 6.9 with commit 8eeed8373e1cca836799bf8e4a05cffa8e444908 and fixed in 6.10 with commit 491aee894a08bc9b8bb52e7363b9d4bc6403f363 |
| |
| 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-2024-40907 |
| 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/pensando/ionic/ionic_txrx.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/8812aa35f3e930f61074b9c1ecea26f354992c21 |
| https://git.kernel.org/stable/c/491aee894a08bc9b8bb52e7363b9d4bc6403f363 |
