CVE-2024-42076

一、漏洞信息
 漏洞编号：[CVE-2024-42076](https://nvd.nist.gov/vuln/detail/CVE-2024-42076)
 漏洞归属组件：[kernel](https://gitee.com/src-openeuler/kernel)
 漏洞归属的版本：4.19.140,4.19.194,4.19.90,5.10.0,6.1.0,6.1.14,6.1.19,6.1.5,6.1.6,6.1.8,6.4.0,6.6.0
 CVSS V3.0分值：
  BaseScore：5.5 Medium
  Vector：CVSS：3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
 漏洞简述：
  In the Linux kernel, the following vulnerability has been resolved:net: can: j1939: Initialize unused data in j1939_send_one()syzbot reported kernel-infoleak in raw_recvmsg() [1]. j1939_send_one()creates full frame including unused data, but it doesn t initializeit. This causes the kernel-infoleak issue. Fix this by initializingunused data.[1]BUG: KMSAN: kernel-infoleak in instrument_copy_to_user include/linux/instrumented.h:114 [inline]BUG: KMSAN: kernel-infoleak in copy_to_user_iter lib/iov_iter.c:24 [inline]BUG: KMSAN: kernel-infoleak in iterate_ubuf include/linux/iov_iter.h:29 [inline]BUG: KMSAN: kernel-infoleak in iterate_and_advance2 include/linux/iov_iter.h:245 [inline]BUG: KMSAN: kernel-infoleak in iterate_and_advance include/linux/iov_iter.h:271 [inline]BUG: KMSAN: kernel-infoleak in _copy_to_iter+0x366/0x2520 lib/iov_iter.c:185 instrument_copy_to_user include/linux/instrumented.h:114 [inline] copy_to_user_iter lib/iov_iter.c:24 [inline] iterate_ubuf include/linux/iov_iter.h:29 [inline] iterate_and_advance2 include/linux/iov_iter.h:245 [inline] iterate_and_advance include/linux/iov_iter.h:271 [inline] _copy_to_iter+0x366/0x2520 lib/iov_iter.c:185 copy_to_iter include/linux/uio.h:196 [inline] memcpy_to_msg include/linux/skbuff.h:4113 [inline] raw_recvmsg+0x2b8/0x9e0 net/can/raw.c:1008 sock_recvmsg_nosec net/socket.c:1046 [inline] sock_recvmsg+0x2c4/0x340 net/socket.c:1068 ____sys_recvmsg+0x18a/0x620 net/socket.c:2803 ___sys_recvmsg+0x223/0x840 net/socket.c:2845 do_recvmmsg+0x4fc/0xfd0 net/socket.c:2939 __sys_recvmmsg net/socket.c:3018 [inline] __do_sys_recvmmsg net/socket.c:3041 [inline] __se_sys_recvmmsg net/socket.c:3034 [inline] __x64_sys_recvmmsg+0x397/0x490 net/socket.c:3034 x64_sys_call+0xf6c/0x3b50 arch/x86/include/generated/asm/syscalls_64.h:300 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xcf/0x1e0 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7fUninit was created at: slab_post_alloc_hook mm/slub.c:3804 [inline] slab_alloc_node mm/slub.c:3845 [inline] kmem_cache_alloc_node+0x613/0xc50 mm/slub.c:3888 kmalloc_reserve+0x13d/0x4a0 net/core/skbuff.c:577 __alloc_skb+0x35b/0x7a0 net/core/skbuff.c:668 alloc_skb include/linux/skbuff.h:1313 [inline] alloc_skb_with_frags+0xc8/0xbf0 net/core/skbuff.c:6504 sock_alloc_send_pskb+0xa81/0xbf0 net/core/sock.c:2795 sock_alloc_send_skb include/net/sock.h:1842 [inline] j1939_sk_alloc_skb net/can/j1939/socket.c:878 [inline] j1939_sk_send_loop net/can/j1939/socket.c:1142 [inline] j1939_sk_sendmsg+0xc0a/0x2730 net/can/j1939/socket.c:1277 sock_sendmsg_nosec net/socket.c:730 [inline] __sock_sendmsg+0x30f/0x380 net/socket.c:745 ____sys_sendmsg+0x877/0xb60 net/socket.c:2584 ___sys_sendmsg+0x28d/0x3c0 net/socket.c:2638 __sys_sendmsg net/socket.c:2667 [inline] __do_sys_sendmsg net/socket.c:2676 [inline] __se_sys_sendmsg net/socket.c:2674 [inline] __x64_sys_sendmsg+0x307/0x4a0 net/socket.c:2674 x64_sys_call+0xc4b/0x3b50 arch/x86/include/generated/asm/syscalls_64.h:47 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xcf/0x1e0 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7fBytes 12-15 of 16 are uninitializedMemory access of size 16 starts at ffff888120969690Data copied to user address 00000000200017c0CPU: 1 PID: 5050 Comm: syz-executor198 Not tainted 6.9.0-rc5-syzkaller-00031-g71b1543c83d6 #0Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024
 漏洞公开时间：2024-07-30 00:15:06
 漏洞创建时间：2024-07-29 17:58:19
 漏洞详情参考链接：
  https://nvd.nist.gov/vuln/detail/CVE-2024-42076
<details>
<summary>更多参考(点击展开)</summary>

| 参考来源 | 参考链接 | 来源链接 |
| ------- | -------- | -------- |
| 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | https://git.kernel.org/stable/c/4c5dc3927e17489c1cae6f48c0d5e4acb4cae01f |  |
| 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | https://git.kernel.org/stable/c/5e4ed38eb17eaca42de57d500cc0f9668d2b6abf |  |
| 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | https://git.kernel.org/stable/c/a2a0ebff7fdeb2f66e29335adf64b9e457300dd4 |  |
| 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | https://git.kernel.org/stable/c/ab2a683938ba4416d389c2f5651cbbb2c41b779f |  |
| 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | https://git.kernel.org/stable/c/b7cdf1dd5d2a2d8200efd98d1893684db48fe134 |  |
| 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | https://git.kernel.org/stable/c/ba7e5ae8208ac07d8e1eace0951a34c169a2d298 |  |
| 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | https://git.kernel.org/stable/c/f97cbce633923588307049c4aef9feb2987e371b |  |
| suse_bugzilla | http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2024-42076 | https://bugzilla.suse.com/show_bug.cgi?id=1228484 |
| suse_bugzilla | https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2024/CVE-2024-42076.mbox | https://bugzilla.suse.com/show_bug.cgi?id=1228484 |
| suse_bugzilla | https://git.kernel.org/stable/c/5e4ed38eb17eaca42de57d500cc0f9668d2b6abf | https://bugzilla.suse.com/show_bug.cgi?id=1228484 |
| suse_bugzilla | https://git.kernel.org/stable/c/a2a0ebff7fdeb2f66e29335adf64b9e457300dd4 | https://bugzilla.suse.com/show_bug.cgi?id=1228484 |
| suse_bugzilla | https://git.kernel.org/stable/c/4c5dc3927e17489c1cae6f48c0d5e4acb4cae01f | https://bugzilla.suse.com/show_bug.cgi?id=1228484 |
| suse_bugzilla | https://git.kernel.org/stable/c/f97cbce633923588307049c4aef9feb2987e371b | https://bugzilla.suse.com/show_bug.cgi?id=1228484 |
| suse_bugzilla | https://git.kernel.org/stable/c/ab2a683938ba4416d389c2f5651cbbb2c41b779f | https://bugzilla.suse.com/show_bug.cgi?id=1228484 |
| suse_bugzilla | https://git.kernel.org/stable/c/ba7e5ae8208ac07d8e1eace0951a34c169a2d298 | https://bugzilla.suse.com/show_bug.cgi?id=1228484 |
| suse_bugzilla | https://git.kernel.org/stable/c/b7cdf1dd5d2a2d8200efd98d1893684db48fe134 | https://bugzilla.suse.com/show_bug.cgi?id=1228484 |
| suse_bugzilla | https://www.cve.org/CVERecord?id=CVE-2024-42076 | https://bugzilla.suse.com/show_bug.cgi?id=1228484 |
| redhat_bugzilla | https://lore.kernel.org/linux-cve-announce/2024072954-CVE-2024-42076-a9bd@gregkh/T | https://bugzilla.redhat.com/show_bug.cgi?id=2300514 |
| ubuntu | https://www.cve.org/CVERecord?id=CVE-2024-42076 | https://ubuntu.com/security/CVE-2024-42076 |
| ubuntu | https://git.kernel.org/linus/b7cdf1dd5d2a2d8200efd98d1893684db48fe134 (6.10-rc6) | https://ubuntu.com/security/CVE-2024-42076 |
| ubuntu | https://git.kernel.org/stable/c/5e4ed38eb17eaca42de57d500cc0f9668d2b6abf | https://ubuntu.com/security/CVE-2024-42076 |
| ubuntu | https://git.kernel.org/stable/c/a2a0ebff7fdeb2f66e29335adf64b9e457300dd4 | https://ubuntu.com/security/CVE-2024-42076 |
| ubuntu | https://git.kernel.org/stable/c/4c5dc3927e17489c1cae6f48c0d5e4acb4cae01f | https://ubuntu.com/security/CVE-2024-42076 |
| ubuntu | https://git.kernel.org/stable/c/f97cbce633923588307049c4aef9feb2987e371b | https://ubuntu.com/security/CVE-2024-42076 |
| ubuntu | https://git.kernel.org/stable/c/ab2a683938ba4416d389c2f5651cbbb2c41b779f | https://ubuntu.com/security/CVE-2024-42076 |
| ubuntu | https://git.kernel.org/stable/c/ba7e5ae8208ac07d8e1eace0951a34c169a2d298 | https://ubuntu.com/security/CVE-2024-42076 |
| ubuntu | https://git.kernel.org/stable/c/b7cdf1dd5d2a2d8200efd98d1893684db48fe134 | https://ubuntu.com/security/CVE-2024-42076 |
| ubuntu | https://ubuntu.com/security/notices/USN-7003-1 | https://ubuntu.com/security/CVE-2024-42076 |
| ubuntu | https://ubuntu.com/security/notices/USN-7003-2 | https://ubuntu.com/security/CVE-2024-42076 |
| ubuntu | https://ubuntu.com/security/notices/USN-7006-1 | https://ubuntu.com/security/CVE-2024-42076 |
| ubuntu | https://nvd.nist.gov/vuln/detail/CVE-2024-42076 | https://ubuntu.com/security/CVE-2024-42076 |
| ubuntu | https://launchpad.net/bugs/cve/CVE-2024-42076 | https://ubuntu.com/security/CVE-2024-42076 |
| ubuntu | https://security-tracker.debian.org/tracker/CVE-2024-42076 | https://ubuntu.com/security/CVE-2024-42076 |
| debian |  | https://security-tracker.debian.org/tracker/CVE-2024-42076 |
| anolis |  | https://anas.openanolis.cn/cves/detail/CVE-2024-42076 |

</details>

漏洞分析指导链接：
  https://gitee.com/openeuler/cve-manager/blob/master/cve-vulner-manager/doc/md/manual.md
 漏洞数据来源:
  openBrain开源漏洞感知系统
 漏洞补丁信息：
  <details>
<summary>详情(点击展开)</summary>

| 影响的包 | 修复版本 | 修复补丁 | 问题引入补丁 | 来源  |
| ------- | -------- | ------- | -------- | --------- |
|  |  | https://git.kernel.org/stable/c/4c5dc3927e17489c1cae6f48c0d5e4acb4cae01f |  | nvd |
|  |  | https://git.kernel.org/stable/c/5e4ed38eb17eaca42de57d500cc0f9668d2b6abf |  | nvd |
|  |  | https://git.kernel.org/stable/c/a2a0ebff7fdeb2f66e29335adf64b9e457300dd4 |  | nvd |
|  |  | https://git.kernel.org/stable/c/ab2a683938ba4416d389c2f5651cbbb2c41b779f |  | nvd |
|  |  | https://git.kernel.org/stable/c/b7cdf1dd5d2a2d8200efd98d1893684db48fe134 |  | nvd |
|  |  | https://git.kernel.org/stable/c/ba7e5ae8208ac07d8e1eace0951a34c169a2d298 |  | nvd |
|  |  | https://git.kernel.org/stable/c/f97cbce633923588307049c4aef9feb2987e371b |  | nvd |
| linux |  | https://git.kernel.org/linus/b7cdf1dd5d2a2d8200efd98d1893684db48fe134 | https://git.kernel.org/linus/9d71dd0c70099914fcd063135da3c580865e924c | ubuntu |

</details>

二、漏洞分析结构反馈
 影响性分析说明：
  Reserved.
 openEuler评分：
  5.5
 Vector：CVSS：3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
 受影响版本排查(受影响/不受影响)：
  1.openEuler-20.03-LTS-SP4(4.19.90):受影响
2.openEuler-22.03-LTS-SP3(5.10.0):受影响
3.openEuler-22.03-LTS-SP4(5.10.0):受影响
4.openEuler-24.03-LTS(6.6.0):受影响
5.master:不受影响
6.openEuler-24.03-LTS-Next(6.6.0):不受影响
7.openEuler-24.03-LTS-SP1(6.6.0):不受影响

修复是否涉及abi变化(是/否)：
  1.openEuler-20.03-LTS-SP4(4.19.90):否
2.openEuler-22.03-LTS-SP1(5.10.0):否
3.openEuler-22.03-LTS-SP3(5.10.0):否
4.master:否
5.openEuler-24.03-LTS(6.6.0):否
6.openEuler-24.03-LTS-Next(6.6.0):否
7.openEuler-22.03-LTS-SP4(5.10.0):否
8.openEuler-24.03-LTS-SP1(6.6.0):否

原因说明：
  1.openEuler-22.03-LTS-SP3(5.10.0):正常修复
2.openEuler-22.03-LTS-SP4(5.10.0):正常修复
3.openEuler-24.03-LTS(6.6.0):正常修复
4.openEuler-20.03-LTS-SP4(4.19.90):不修复-超出修复范围
5.master:不受影响-漏洞代码不能被攻击者触发
6.openEuler-24.03-LTS-Next(6.6.0):不受影响-漏洞代码不能被攻击者触发
7.openEuler-24.03-LTS-SP1(6.6.0):不受影响-漏洞代码不存在

三、漏洞修复
安全公告链接：https://www.openeuler.org/zh/security/safety-bulletin/detail/?id=openEuler-SA-2025-1078

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