一、漏洞信息

漏洞编号：[CVE-2024-47716](https://nvd.nist.gov/vuln/detail/CVE-2024-47716)

漏洞归属组件：[kernel](https://gitee.com/src-openeuler/kernel)

漏洞归属的版本：6.6.0

CVSS V3.0分值：

漏洞简述：

漏洞公开时间：2024-10-21 20:15

漏洞创建时间：2024-10-31 22:11:01

漏洞详情参考链接：

https://nvd.nist.gov/vuln/detail/CVE-2024-47716

<details>

<summary>更多参考(点击展开)</summary>

无

</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:

其它

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：

openEuler评分：

受影响版本排查(受影响/不受影响)：

1.master(6.6.0):

2.openEuler-20.03-LTS-SP4(4.19.90):

3.openEuler-22.03-LTS-SP1(5.10.0):

4.openEuler-22.03-LTS-SP3(5.10.0):

5.openEuler-22.03-LTS-SP4(5.10.0):

6.openEuler-24.03-LTS(6.6.0):

7.openEuler-24.03-LTS-Next(6.6.0):

修复是否涉及abi变化(是/否)：

1.master(6.6.0):

2.openEuler-20.03-LTS-SP4(4.19.90):

3.openEuler-22.03-LTS-SP1(5.10.0):

4.openEuler-22.03-LTS-SP3(5.10.0):

5.openEuler-22.03-LTS-SP4(5.10.0):

6.openEuler-24.03-LTS(6.6.0):

7.openEuler-24.03-LTS-Next(6.6.0):

原因说明：

1.master(6.6.0):

2.openEuler-20.03-LTS-SP4(4.19.90):

3.openEuler-22.03-LTS-SP1(5.10.0):

4.openEuler-22.03-LTS-SP3(5.10.0):

5.openEuler-22.03-LTS-SP4(5.10.0):

6.openEuler-24.03-LTS(6.6.0):

7.openEuler-24.03-LTS-Next(6.6.0):

一、漏洞信息

漏洞编号：[CVE-2024-47716](https://nvd.nist.gov/vuln/detail/CVE-2024-47716)

漏洞归属组件：[kernel](https://gitee.com/src-openeuler/kernel)

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:ARM: 9410/1: vfp: Use asm volatile in fmrx/fmxr macrosFloating point instructions in userspace can crash some arm kernelsbuilt with clang/LLD 17.0.6: BUG: unsupported FP instruction in kernel mode FPEXC == 0xc0000780 Internal error: Oops - undefined instruction: 0 [#1] ARM CPU: 0 PID: 196 Comm: vfp-reproducer Not tainted 6.10.0 #1 Hardware name: BCM2835 PC is at vfp_support_entry+0xc8/0x2cc LR is at do_undefinstr+0xa8/0x250 pc : [<c0101d50>] lr : [<c010a80c>] psr: a0000013 sp : dc8d1f68 ip : 60000013 fp : bedea19c r10: ec532b17 r9 : 00000010 r8 : 0044766c r7 : c0000780 r6 : ec532b17 r5 : c1c13800 r4 : dc8d1fb0 r3 : c10072c4 r2 : c0101c88 r1 : ec532b17 r0 : 0044766c Flags: NzCv IRQs on FIQs on Mode SVC_32 ISA ARM Segment none Control: 00c5387d Table: 0251c008 DAC: 00000051 Register r0 information: non-paged memory Register r1 information: vmalloc memory Register r2 information: non-slab/vmalloc memory Register r3 information: non-slab/vmalloc memory Register r4 information: 2-page vmalloc region Register r5 information: slab kmalloc-cg-2k Register r6 information: vmalloc memory Register r7 information: non-slab/vmalloc memory Register r8 information: non-paged memory Register r9 information: zero-size pointer Register r10 information: vmalloc memory Register r11 information: non-paged memory Register r12 information: non-paged memory Process vfp-reproducer (pid: 196, stack limit = 0x61aaaf8b) Stack: (0xdc8d1f68 to 0xdc8d2000) 1f60: 0000081f b6f69300 0000000f c10073f4 c10072c4 dc8d1fb0 1f80: ec532b17 0c532b17 0044766c b6f9ccd8 00000000 c010a80c 00447670 60000010 1fa0: ffffffff c1c13800 00c5387d c0100f10 b6f68af8 00448fc0 00000000 bedea188 1fc0: bedea314 00000001 00448ebc b6f9d000 00447608 b6f9ccd8 00000000 bedea19c 1fe0: bede9198 bedea188 b6e1061c 0044766c 60000010 ffffffff 00000000 00000000 Call trace: [<c0101d50>] (vfp_support_entry) from [<c010a80c>] (do_undefinstr+0xa8/0x250) [<c010a80c>] (do_undefinstr) from [<c0100f10>] (__und_usr+0x70/0x80) Exception stack(0xdc8d1fb0 to 0xdc8d1ff8) 1fa0: b6f68af8 00448fc0 00000000 bedea188 1fc0: bedea314 00000001 00448ebc b6f9d000 00447608 b6f9ccd8 00000000 bedea19c 1fe0: bede9198 bedea188 b6e1061c 0044766c 60000010 ffffffff Code: 0a000061 e3877202 e594003c e3a09010 (eef16a10) ---[ end trace 0000000000000000 ]--- Kernel panic - not syncing: Fatal exception in interrupt ---[ end Kernel panic - not syncing: Fatal exception in interrupt ]---This is a minimal userspace reproducer on a Raspberry Pi Zero W: #include <stdio.h> #include <math.h> int main(void) { double v = 1.0; printf( %fn , NAN + *(volatile double *)&v); return 0; }Another way to consistently trigger the oops is: calvin@raspberry-pi-zero-w ~$ python -c import json The bug reproduces only when the kernel is built with DYNAMIC_DEBUG=n,because the pr_debug() calls act as barriers even when not activated.This is the output from the same kernel source built with the samecompiler and DYNAMIC_DEBUG=y, where the userspace reproducer works asexpected: VFP: bounce: trigger ec532b17 fpexc c0000780 VFP: emulate: INST=0xee377b06 SCR=0x00000000 VFP: bounce: trigger eef1fa10 fpexc c0000780 VFP: emulate: INST=0xeeb40b40 SCR=0x00000000 VFP: raising exceptions 30000000 calvin@raspberry-pi-zero-w ~$ ./vfp-reproducer nanCrudely grepping for vmsr/vmrs instructions in the otherwise nearlyidential text for vfp_support_entry() makes the problem obvious: vmlinux.llvm.good [0xc0101cb8] <+48>: vmrs r7, fpexc vmlinux.llvm.good [0xc0101cd8] <+80>: vmsr fpexc, r0 vmlinux.llvm.good [0xc0101d20---truncated---

漏洞创建时间：2024-10-31 22:11:01

漏洞详情参考链接：

https://nvd.nist.gov/vuln/detail/CVE-2024-47716

<details>

<summary>更多参考(点击展开)</summary>

一、漏洞信息

漏洞编号：[CVE-2024-47716](https://nvd.nist.gov/vuln/detail/CVE-2024-47716)

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:ARM: 9410/1: vfp: Use asm volatile in fmrx/fmxr macrosFloating point instructions in userspace can crash some arm kernelsbuilt with clang/LLD 17.0.6: BUG: unsupported FP instruction in kernel mode FPEXC == 0xc0000780 Internal error: Oops - undefined instruction: 0 [#1] ARM CPU: 0 PID: 196 Comm: vfp-reproducer Not tainted 6.10.0 #1 Hardware name: BCM2835 PC is at vfp_support_entry+0xc8/0x2cc LR is at do_undefinstr+0xa8/0x250 pc : [<c0101d50>] lr : [<c010a80c>] psr: a0000013 sp : dc8d1f68 ip : 60000013 fp : bedea19c r10: ec532b17 r9 : 00000010 r8 : 0044766c r7 : c0000780 r6 : ec532b17 r5 : c1c13800 r4 : dc8d1fb0 r3 : c10072c4 r2 : c0101c88 r1 : ec532b17 r0 : 0044766c Flags: NzCv IRQs on FIQs on Mode SVC_32 ISA ARM Segment none Control: 00c5387d Table: 0251c008 DAC: 00000051 Register r0 information: non-paged memory Register r1 information: vmalloc memory Register r2 information: non-slab/vmalloc memory Register r3 information: non-slab/vmalloc memory Register r4 information: 2-page vmalloc region Register r5 information: slab kmalloc-cg-2k Register r6 information: vmalloc memory Register r7 information: non-slab/vmalloc memory Register r8 information: non-paged memory Register r9 information: zero-size pointer Register r10 information: vmalloc memory Register r11 information: non-paged memory Register r12 information: non-paged memory Process vfp-reproducer (pid: 196, stack limit = 0x61aaaf8b) Stack: (0xdc8d1f68 to 0xdc8d2000) 1f60: 0000081f b6f69300 0000000f c10073f4 c10072c4 dc8d1fb0 1f80: ec532b17 0c532b17 0044766c b6f9ccd8 00000000 c010a80c 00447670 60000010 1fa0: ffffffff c1c13800 00c5387d c0100f10 b6f68af8 00448fc0 00000000 bedea188 1fc0: bedea314 00000001 00448ebc b6f9d000 00447608 b6f9ccd8 00000000 bedea19c 1fe0: bede9198 bedea188 b6e1061c 0044766c 60000010 ffffffff 00000000 00000000 Call trace: [<c0101d50>] (vfp_support_entry) from [<c010a80c>] (do_undefinstr+0xa8/0x250) [<c010a80c>] (do_undefinstr) from [<c0100f10>] (__und_usr+0x70/0x80) Exception stack(0xdc8d1fb0 to 0xdc8d1ff8) 1fa0: b6f68af8 00448fc0 00000000 bedea188 1fc0: bedea314 00000001 00448ebc b6f9d000 00447608 b6f9ccd8 00000000 bedea19c 1fe0: bede9198 bedea188 b6e1061c 0044766c 60000010 ffffffff Code: 0a000061 e3877202 e594003c e3a09010 (eef16a10) ---[ end trace 0000000000000000 ]--- Kernel panic - not syncing: Fatal exception in interrupt ---[ end Kernel panic - not syncing: Fatal exception in interrupt ]---This is a minimal userspace reproducer on a Raspberry Pi Zero W: #include <stdio.h> #include <math.h> int main(void) { double v = 1.0; printf( %fn , NAN + *(volatile double *)&v); return 0; }Another way to consistently trigger the oops is: calvin@raspberry-pi-zero-w ~$ python -c import json The bug reproduces only when the kernel is built with DYNAMIC_DEBUG=n,because the pr_debug() calls act as barriers even when not activated.This is the output from the same kernel source built with the samecompiler and DYNAMIC_DEBUG=y, where the userspace reproducer works asexpected: VFP: bounce: trigger ec532b17 fpexc c0000780 VFP: emulate: INST=0xee377b06 SCR=0x00000000 VFP: bounce: trigger eef1fa10 fpexc c0000780 VFP: emulate: INST=0xeeb40b40 SCR=0x00000000 VFP: raising exceptions 30000000 calvin@raspberry-pi-zero-w ~$ ./vfp-reproducer nanCrudely grepping for vmsr/vmrs instructions in the otherwise nearlyidential text for vfp_support_entry() makes the problem obvious: vmlinux.llvm.good [0xc0101cb8] <+48>: vmrs r7, fpexc vmlinux.llvm.good [0xc0101cd8] <+80>: vmsr fpexc, r0 vmlinux.llvm.good [0xc0101d20---truncated---

漏洞公开时间：2024-10-21 20:15:07

漏洞创建时间：2024-10-31 22:11:01

漏洞详情参考链接：

https://nvd.nist.gov/vuln/detail/CVE-2024-47716

<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/39caf610a63786b3b0ef3348ac015edc19827d6a | |

| 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | https://git.kernel.org/stable/c/89a906dfa8c3b21b3e5360f73c49234ac1eb885b | |

| 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | https://git.kernel.org/stable/c/9fc60f2bdd43e758bdf0305c0fc83221419ddb3f | |

| 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | https://git.kernel.org/stable/c/cd595d87e5fdd2fc09ea69359aa85e7f12f4b97b | |

| suse_bugzilla | http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2024-47716 | https://bugzilla.suse.com/show_bug.cgi?id=1232053 |

| suse_bugzilla | https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2024/CVE-2024-47716.mbox | https://bugzilla.suse.com/show_bug.cgi?id=1232053 |

| suse_bugzilla | https://git.kernel.org/stable/c/9fc60f2bdd43e758bdf0305c0fc83221419ddb3f | https://bugzilla.suse.com/show_bug.cgi?id=1232053 |

| suse_bugzilla | https://git.kernel.org/stable/c/cd595d87e5fdd2fc09ea69359aa85e7f12f4b97b | https://bugzilla.suse.com/show_bug.cgi?id=1232053 |

| suse_bugzilla | https://git.kernel.org/stable/c/39caf610a63786b3b0ef3348ac015edc19827d6a | https://bugzilla.suse.com/show_bug.cgi?id=1232053 |

| suse_bugzilla | https://git.kernel.org/stable/c/89a906dfa8c3b21b3e5360f73c49234ac1eb885b | https://bugzilla.suse.com/show_bug.cgi?id=1232053 |

| suse_bugzilla | https://www.cve.org/CVERecord?id=CVE-2024-47716 | https://bugzilla.suse.com/show_bug.cgi?id=1232053 |

| suse_bugzilla | https://bugzilla.redhat.com/show_bug.cgi?id=2320256 | https://bugzilla.suse.com/show_bug.cgi?id=1232053 |

| debian | | https://security-tracker.debian.org/tracker/CVE-2024-47716 |

| mageia | | http://advisories.mageia.org/MGASA-2024-0345.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:

其它

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/39caf610a63786b3b0ef3348ac015edc19827d6a | | nvd |

| | | https://git.kernel.org/stable/c/89a906dfa8c3b21b3e5360f73c49234ac1eb885b | | nvd |

| | | https://git.kernel.org/stable/c/9fc60f2bdd43e758bdf0305c0fc83221419ddb3f | | nvd |

| | | https://git.kernel.org/stable/c/cd595d87e5fdd2fc09ea69359aa85e7f12f4b97b | | nvd |

</details>

二、漏洞分析结构反馈

影响性分析说明：

openEuler评分：

受影响版本排查(受影响/不受影响)：

1.master(6.6.0):

2.openEuler-20.03-LTS-SP4(4.19.90):

3.openEuler-22.03-LTS-SP3(5.10.0):

4.openEuler-22.03-LTS-SP4(5.10.0):

5.openEuler-24.03-LTS(6.6.0):

6.openEuler-24.03-LTS-Next(6.6.0):

7.openEuler-24.03-LTS-SP1(6.6.0):