| From bippy-1.1.0 Mon Sep 17 00:00:00 2001 |
| From: Greg Kroah-Hartman <gregkh@kernel.org> |
| To: <linux-cve-announce@vger.kernel.org> |
| Reply-to: <cve@kernel.org>, <linux-kernel@vger.kernel.org> |
| Subject: CVE-2022-49847: net: ethernet: ti: am65-cpsw: Fix segmentation fault at module unload |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| net: ethernet: ti: am65-cpsw: Fix segmentation fault at module unload |
| |
| Move am65_cpsw_nuss_phylink_cleanup() call to after |
| am65_cpsw_nuss_cleanup_ndev() so phylink is still valid |
| to prevent the below Segmentation fault on module remove when |
| first slave link is up. |
| |
| [ 31.652944] Unable to handle kernel paging request at virtual address 00040008000005f4 |
| [ 31.684627] Mem abort info: |
| [ 31.687446] ESR = 0x0000000096000004 |
| [ 31.704614] EC = 0x25: DABT (current EL), IL = 32 bits |
| [ 31.720663] SET = 0, FnV = 0 |
| [ 31.723729] EA = 0, S1PTW = 0 |
| [ 31.740617] FSC = 0x04: level 0 translation fault |
| [ 31.756624] Data abort info: |
| [ 31.759508] ISV = 0, ISS = 0x00000004 |
| [ 31.776705] CM = 0, WnR = 0 |
| [ 31.779695] [00040008000005f4] address between user and kernel address ranges |
| [ 31.808644] Internal error: Oops: 0000000096000004 [#1] PREEMPT SMP |
| [ 31.814928] Modules linked in: wlcore_sdio wl18xx wlcore mac80211 libarc4 cfg80211 rfkill crct10dif_ce phy_gmii_sel ti_am65_cpsw_nuss(-) sch_fq_codel ipv6 |
| [ 31.828776] CPU: 0 PID: 1026 Comm: modprobe Not tainted 6.1.0-rc2-00012-gfabfcf7dafdb-dirty #160 |
| [ 31.837547] Hardware name: Texas Instruments AM625 (DT) |
| [ 31.842760] pstate: 40000005 (nZcv daif -PAN -UAO -TCO -DIT -SSBS BTYPE=--) |
| [ 31.849709] pc : phy_stop+0x18/0xf8 |
| [ 31.853202] lr : phylink_stop+0x38/0xf8 |
| [ 31.857031] sp : ffff80000a0839f0 |
| [ 31.860335] x29: ffff80000a0839f0 x28: ffff000000de1c80 x27: 0000000000000000 |
| [ 31.867462] x26: 0000000000000000 x25: 0000000000000000 x24: ffff80000a083b98 |
| [ 31.874589] x23: 0000000000000800 x22: 0000000000000001 x21: ffff000001bfba90 |
| [ 31.881715] x20: ffff0000015ee000 x19: 0004000800000200 x18: 0000000000000000 |
| [ 31.888842] x17: ffff800076c45000 x16: ffff800008004000 x15: 000058e39660b106 |
| [ 31.895969] x14: 0000000000000144 x13: 0000000000000144 x12: 0000000000000000 |
| [ 31.903095] x11: 000000000000275f x10: 00000000000009e0 x9 : ffff80000a0837d0 |
| [ 31.910222] x8 : ffff000000de26c0 x7 : ffff00007fbd6540 x6 : ffff00007fbd64c0 |
| [ 31.917349] x5 : ffff00007fbd0b10 x4 : ffff00007fbd0b10 x3 : ffff00007fbd3920 |
| [ 31.924476] x2 : d0a07fcff8b8d500 x1 : 0000000000000000 x0 : 0004000800000200 |
| [ 31.931603] Call trace: |
| [ 31.934042] phy_stop+0x18/0xf8 |
| [ 31.937177] phylink_stop+0x38/0xf8 |
| [ 31.940657] am65_cpsw_nuss_ndo_slave_stop+0x28/0x1e0 [ti_am65_cpsw_nuss] |
| [ 31.947452] __dev_close_many+0xa4/0x140 |
| [ 31.951371] dev_close_many+0x84/0x128 |
| [ 31.955115] unregister_netdevice_many+0x130/0x6d0 |
| [ 31.959897] unregister_netdevice_queue+0x94/0xd8 |
| [ 31.964591] unregister_netdev+0x24/0x38 |
| [ 31.968504] am65_cpsw_nuss_cleanup_ndev.isra.0+0x48/0x70 [ti_am65_cpsw_nuss] |
| [ 31.975637] am65_cpsw_nuss_remove+0x58/0xf8 [ti_am65_cpsw_nuss] |
| |
| The Linux kernel CVE team has assigned CVE-2022-49847 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Issue introduced in 5.18 with commit e8609e69470f369509b44d5f2619f94541fe9df6 and fixed in 6.0.9 with commit 442fd1bfe599bc54d118775e9e1a4fe913e4b369 |
| Issue introduced in 5.18 with commit e8609e69470f369509b44d5f2619f94541fe9df6 and fixed in 6.1 with commit 1a0c016a4831ea29be09bbc8162d4a2a0690b4b8 |
| |
| 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-2022-49847 |
| 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/ti/am65-cpsw-nuss.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/442fd1bfe599bc54d118775e9e1a4fe913e4b369 |
| https://git.kernel.org/stable/c/1a0c016a4831ea29be09bbc8162d4a2a0690b4b8 |
