CVE-2024-46789

一、漏洞信息
 漏洞编号：[CVE-2024-46789](https://nvd.nist.gov/vuln/detail/CVE-2024-46789)
 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：0.0 None
  Vector：CVSS：3.0/
 漏洞简述：
  In the Linux kernel, the following vulnerability has been resolved:mm/slub: add check for s->flags in the alloc_tagging_slab_free_hookWhen enable CONFIG_MEMCG & CONFIG_KFENCE & CONFIG_KMEMLEAK, the followingwarning always occurs,This is because the following call stack occurred:mem_pool_alloc    kmem_cache_alloc_noprof        slab_alloc_node            kfence_allocOnce the kfence allocation is successful,slab->obj_exts will not be empty,because it has already been assigned a value in kfence_init_pool.Since in the prepare_slab_obj_exts_hook function,we perform a check fors->flags & (SLAB_NO_OBJ_EXT | SLAB_NOLEAKTRACE),the alloc_tag_add functionwill not be called as a result.Therefore,ref->ct remains NULL.However,when we call mem_pool_free,since obj_ext is not empty, iteventually leads to the alloc_tag_sub scenario being invoked.  This iswhere the warning occurs.So we should add corresponding checks in the alloc_tagging_slab_free_hook.For __GFP_NO_OBJ_EXT case,I didn t see the specific case where it s usingkfence,so I won t add the corresponding check inalloc_tagging_slab_free_hook for now.[    3.734349] ------------[ cut here ]------------[    3.734807] alloc_tag was not set[    3.735129] WARNING: CPU: 4 PID: 40 at ./include/linux/alloc_tag.h:130 kmem_cache_free+0x444/0x574[    3.735866] Modules linked in: autofs4[    3.736211] CPU: 4 UID: 0 PID: 40 Comm: ksoftirqd/4 Tainted: G        W          6.11.0-rc3-dirty #1[    3.736969] Tainted: [W]=WARN[    3.737258] Hardware name: QEMU KVM Virtual Machine, BIOS unknown 2/2/2022[    3.737875] pstate: 60400005 (nZCv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--)[    3.738501] pc : kmem_cache_free+0x444/0x574[    3.738951] lr : kmem_cache_free+0x444/0x574[    3.739361] sp : ffff80008357bb60[    3.739693] x29: ffff80008357bb70 x28: 0000000000000000 x27: 0000000000000000[    3.740338] x26: ffff80008207f000 x25: ffff000b2eb2fd60 x24: ffff0000c0005700[    3.740982] x23: ffff8000804229e4 x22: ffff800082080000 x21: ffff800081756000[    3.741630] x20: fffffd7ff8253360 x19: 00000000000000a8 x18: ffffffffffffffff[    3.742274] x17: ffff800ab327f000 x16: ffff800083398000 x15: ffff800081756df0[    3.742919] x14: 0000000000000000 x13: 205d344320202020 x12: 5b5d373038343337[    3.743560] x11: ffff80008357b650 x10: 000000000000005d x9 : 00000000ffffffd0[    3.744231] x8 : 7f7f7f7f7f7f7f7f x7 : ffff80008237bad0 x6 : c0000000ffff7fff[    3.744907] x5 : ffff80008237ba78 x4 : ffff8000820bbad0 x3 : 0000000000000001[    3.745580] x2 : 68d66547c09f7800 x1 : 68d66547c09f7800 x0 : 0000000000000000[    3.746255] Call trace:[    3.746530]  kmem_cache_free+0x444/0x574[    3.746931]  mem_pool_free+0x44/0xf4[    3.747306]  free_object_rcu+0xc8/0xdc[    3.747693]  rcu_do_batch+0x234/0x8a4[    3.748075]  rcu_core+0x230/0x3e4[    3.748424]  rcu_core_si+0x14/0x1c[    3.748780]  handle_softirqs+0x134/0x378[    3.749189]  run_ksoftirqd+0x70/0x9c[    3.749560]  smpboot_thread_fn+0x148/0x22c[    3.749978]  kthread+0x10c/0x118[    3.750323]  ret_from_fork+0x10/0x20[    3.750696] ---[ end trace 0000000000000000 ]---
 漏洞公开时间：2024-09-18 16:15:05
 漏洞创建时间：2024-09-18 17:18:48
 漏洞详情参考链接：
  https://nvd.nist.gov/vuln/detail/CVE-2024-46789
<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/2d476c86ba4745fcbc912ce4627df4fa80caa9ad |  |
| 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | https://git.kernel.org/stable/c/ab7ca09520e9c41c219a4427fe0dae24024bfe7f |  |
| suse_bugzilla | http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2024-46789 | https://bugzilla.suse.com/show_bug.cgi?id=1230816 |
| suse_bugzilla | https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2024/CVE-2024-46789.mbox | https://bugzilla.suse.com/show_bug.cgi?id=1230816 |
| suse_bugzilla | https://git.kernel.org/stable/c/2d476c86ba4745fcbc912ce4627df4fa80caa9ad | https://bugzilla.suse.com/show_bug.cgi?id=1230816 |
| suse_bugzilla | https://git.kernel.org/stable/c/ab7ca09520e9c41c219a4427fe0dae24024bfe7f | https://bugzilla.suse.com/show_bug.cgi?id=1230816 |
| suse_bugzilla | https://www.cve.org/CVERecord?id=CVE-2024-46789 | https://bugzilla.suse.com/show_bug.cgi?id=1230816 |
| suse_bugzilla | https://bugzilla.redhat.com/show_bug.cgi?id=2313137 | https://bugzilla.suse.com/show_bug.cgi?id=1230816 |
| debian |  | https://security-tracker.debian.org/tracker/CVE-2024-46789 |
| anolis |  | https://anas.openanolis.cn/cves/detail/CVE-2024-46789 |
| amazon_linux_explore | https://access.redhat.com/security/cve/CVE-2024-46789 | https://explore.alas.aws.amazon.com/CVE-2024-46789.html |
| amazon_linux_explore | https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2024-46789 | https://explore.alas.aws.amazon.com/CVE-2024-46789.html |

</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>

无
</details>

二、漏洞分析结构反馈
 影响性分析说明：
  Reserved.
 openEuler评分：
  3.9
 Vector：CVSS：3.0/AV:L/AC:H/PR:H/UI:N/S:U/C:L/I:L/A:L
 受影响版本排查(受影响/不受影响)：
  1.openEuler-20.03-LTS-SP4(4.19.90):不受影响
2.openEuler-22.03-LTS-SP1(5.10.0):不受影响
3.openEuler-22.03-LTS-SP3(5.10.0):不受影响
4.openEuler-22.03-LTS-SP4(5.10.0):不受影响
5.master(6.6.0):不受影响
6.openEuler-24.03-LTS(6.6.0):不受影响
7.openEuler-24.03-LTS-Next(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(6.6.0):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

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