| 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-2023-53141: ila: do not generate empty messages in ila_xlat_nl_cmd_get_mapping() |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| ila: do not generate empty messages in ila_xlat_nl_cmd_get_mapping() |
| |
| ila_xlat_nl_cmd_get_mapping() generates an empty skb, |
| triggerring a recent sanity check [1]. |
| |
| Instead, return an error code, so that user space |
| can get it. |
| |
| [1] |
| skb_assert_len |
| WARNING: CPU: 0 PID: 5923 at include/linux/skbuff.h:2527 skb_assert_len include/linux/skbuff.h:2527 [inline] |
| WARNING: CPU: 0 PID: 5923 at include/linux/skbuff.h:2527 __dev_queue_xmit+0x1bc0/0x3488 net/core/dev.c:4156 |
| Modules linked in: |
| CPU: 0 PID: 5923 Comm: syz-executor269 Not tainted 6.2.0-syzkaller-18300-g2ebd1fbb946d #0 |
| Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/21/2023 |
| pstate: 60400005 (nZCv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) |
| pc : skb_assert_len include/linux/skbuff.h:2527 [inline] |
| pc : __dev_queue_xmit+0x1bc0/0x3488 net/core/dev.c:4156 |
| lr : skb_assert_len include/linux/skbuff.h:2527 [inline] |
| lr : __dev_queue_xmit+0x1bc0/0x3488 net/core/dev.c:4156 |
| sp : ffff80001e0d6c40 |
| x29: ffff80001e0d6e60 x28: dfff800000000000 x27: ffff0000c86328c0 |
| x26: dfff800000000000 x25: ffff0000c8632990 x24: ffff0000c8632a00 |
| x23: 0000000000000000 x22: 1fffe000190c6542 x21: ffff0000c8632a10 |
| x20: ffff0000c8632a00 x19: ffff80001856e000 x18: ffff80001e0d5fc0 |
| x17: 0000000000000000 x16: ffff80001235d16c x15: 0000000000000000 |
| x14: 0000000000000000 x13: 0000000000000001 x12: 0000000000000001 |
| x11: ff80800008353a30 x10: 0000000000000000 x9 : 21567eaf25bfb600 |
| x8 : 21567eaf25bfb600 x7 : 0000000000000001 x6 : 0000000000000001 |
| x5 : ffff80001e0d6558 x4 : ffff800015c74760 x3 : ffff800008596744 |
| x2 : 0000000000000001 x1 : 0000000100000000 x0 : 000000000000000e |
| Call trace: |
| skb_assert_len include/linux/skbuff.h:2527 [inline] |
| __dev_queue_xmit+0x1bc0/0x3488 net/core/dev.c:4156 |
| dev_queue_xmit include/linux/netdevice.h:3033 [inline] |
| __netlink_deliver_tap_skb net/netlink/af_netlink.c:307 [inline] |
| __netlink_deliver_tap+0x45c/0x6f8 net/netlink/af_netlink.c:325 |
| netlink_deliver_tap+0xf4/0x174 net/netlink/af_netlink.c:338 |
| __netlink_sendskb net/netlink/af_netlink.c:1283 [inline] |
| netlink_sendskb+0x6c/0x154 net/netlink/af_netlink.c:1292 |
| netlink_unicast+0x334/0x8d4 net/netlink/af_netlink.c:1380 |
| nlmsg_unicast include/net/netlink.h:1099 [inline] |
| genlmsg_unicast include/net/genetlink.h:433 [inline] |
| genlmsg_reply include/net/genetlink.h:443 [inline] |
| ila_xlat_nl_cmd_get_mapping+0x620/0x7d0 net/ipv6/ila/ila_xlat.c:493 |
| genl_family_rcv_msg_doit net/netlink/genetlink.c:968 [inline] |
| genl_family_rcv_msg net/netlink/genetlink.c:1048 [inline] |
| genl_rcv_msg+0x938/0xc1c net/netlink/genetlink.c:1065 |
| netlink_rcv_skb+0x214/0x3c4 net/netlink/af_netlink.c:2574 |
| genl_rcv+0x38/0x50 net/netlink/genetlink.c:1076 |
| netlink_unicast_kernel net/netlink/af_netlink.c:1339 [inline] |
| netlink_unicast+0x660/0x8d4 net/netlink/af_netlink.c:1365 |
| netlink_sendmsg+0x800/0xae0 net/netlink/af_netlink.c:1942 |
| sock_sendmsg_nosec net/socket.c:714 [inline] |
| sock_sendmsg net/socket.c:734 [inline] |
| ____sys_sendmsg+0x558/0x844 net/socket.c:2479 |
| ___sys_sendmsg net/socket.c:2533 [inline] |
| __sys_sendmsg+0x26c/0x33c net/socket.c:2562 |
| __do_sys_sendmsg net/socket.c:2571 [inline] |
| __se_sys_sendmsg net/socket.c:2569 [inline] |
| __arm64_sys_sendmsg+0x80/0x94 net/socket.c:2569 |
| __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] |
| invoke_syscall+0x98/0x2c0 arch/arm64/kernel/syscall.c:52 |
| el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142 |
| do_el0_svc+0x64/0x198 arch/arm64/kernel/syscall.c:193 |
| el0_svc+0x58/0x168 arch/arm64/kernel/entry-common.c:637 |
| el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655 |
| el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:591 |
| irq event stamp: 136484 |
| hardirqs last enabled at (136483): [<ffff800008350244>] __up_console_sem+0x60/0xb4 kernel/printk/printk.c:345 |
| hardirqs last disabled at (136484): [<ffff800012358d60>] el1_dbg+0x24/0x80 arch/arm64/kernel/entry-common.c:405 |
| softirqs last enabled at (136418): [<ffff800008020ea8>] softirq_handle_end kernel/softirq.c:414 [inline] |
| softirqs last enabled at (136418): [<ffff800008020ea8>] __do_softirq+0xd4c/0xfa4 kernel/softirq.c:600 |
| softirqs last disabled at (136371): [<ffff80000802b4a4>] ____do_softirq+0x14/0x20 arch/arm64/kernel/irq.c:80 |
| ---[ end trace 0000000000000000 ]--- |
| skb len=0 headroom=0 headlen=0 tailroom=192 |
| mac=(0,0) net=(0,-1) trans=-1 |
| shinfo(txflags=0 nr_frags=0 gso(size=0 type=0 segs=0)) |
| csum(0x0 ip_summed=0 complete_sw=0 valid=0 level=0) |
| hash(0x0 sw=0 l4=0) proto=0x0010 pkttype=6 iif=0 |
| dev name=nlmon0 feat=0x0000000000005861 |
| |
| The Linux kernel CVE team has assigned CVE-2023-53141 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Issue introduced in 4.5 with commit 7f00feaf107645d95a6d87e99b4d141ac0a08efd and fixed in 4.14.310 with commit b26bc5861505f04dea933ca3e522772b20fa086f |
| Issue introduced in 4.5 with commit 7f00feaf107645d95a6d87e99b4d141ac0a08efd and fixed in 4.19.278 with commit c631e52aea0fc8d4deea06e439f5810a8b40ad0f |
| Issue introduced in 4.5 with commit 7f00feaf107645d95a6d87e99b4d141ac0a08efd and fixed in 5.4.237 with commit 783f218940b3c7b872e4111d0145000f26ecbdf6 |
| Issue introduced in 4.5 with commit 7f00feaf107645d95a6d87e99b4d141ac0a08efd and fixed in 5.10.175 with commit 42d9ed4e5dc5f87fbd67c232e2e4a9b88ceeb47f |
| Issue introduced in 4.5 with commit 7f00feaf107645d95a6d87e99b4d141ac0a08efd and fixed in 5.15.103 with commit 91aceb3844d4aec555c7f423f9fd843eff5835e9 |
| Issue introduced in 4.5 with commit 7f00feaf107645d95a6d87e99b4d141ac0a08efd and fixed in 6.1.20 with commit 25b54f247ea060aeb85ec88a82c75060fca03521 |
| Issue introduced in 4.5 with commit 7f00feaf107645d95a6d87e99b4d141ac0a08efd and fixed in 6.2.7 with commit 60fe7cb483c8c5dcadaeeac867251d6e59c7badc |
| Issue introduced in 4.5 with commit 7f00feaf107645d95a6d87e99b4d141ac0a08efd and fixed in 6.3 with commit 693aa2c0d9b6d5b1f2745d31b6e70d09dbbaf06e |
| |
| 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-2023-53141 |
| 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: |
| net/ipv6/ila/ila_xlat.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/b26bc5861505f04dea933ca3e522772b20fa086f |
| https://git.kernel.org/stable/c/c631e52aea0fc8d4deea06e439f5810a8b40ad0f |
| https://git.kernel.org/stable/c/783f218940b3c7b872e4111d0145000f26ecbdf6 |
| https://git.kernel.org/stable/c/42d9ed4e5dc5f87fbd67c232e2e4a9b88ceeb47f |
| https://git.kernel.org/stable/c/91aceb3844d4aec555c7f423f9fd843eff5835e9 |
| https://git.kernel.org/stable/c/25b54f247ea060aeb85ec88a82c75060fca03521 |
| https://git.kernel.org/stable/c/60fe7cb483c8c5dcadaeeac867251d6e59c7badc |
| https://git.kernel.org/stable/c/693aa2c0d9b6d5b1f2745d31b6e70d09dbbaf06e |
