CVE-2024-26688— Linux kernel 安全漏洞
一分钟漏洞结论
影响对象
Linux Linux
利用判断
尚无明确在野利用证据，仍需结合暴露面评估
建议动作
优先检查厂商安全公告和参考链接中的修复版本；无法立即升级时，限制受影响服务暴露并加强监测。
Linux kernel是美国Linux基金会的开源操作系统Linux所使用的内核。 Linux kernel存在安全漏洞，该漏洞源于空指针取消引用。
可能的 ATT&CK 技术 1 AI
T1190 · Exploit Public-Facing Application影响版本矩阵 16
| 厂商 | 产品 | 版本范围 | 状态 |
|---|---|---|---|
| Linux | Linux | 32021982a324dce93b4ae00c06213bf45fb319c8< 1dde8ef4b7a749ae1bc73617c91775631d167557 |
affected |
32021982a324dce93b4ae00c06213bf45fb319c8< 80d852299987a8037be145a94f41874228f1a773 |
affected | ||
32021982a324dce93b4ae00c06213bf45fb319c8< 22850c9950a4e43a67299755d11498f3292d02ff |
affected | ||
32021982a324dce93b4ae00c06213bf45fb319c8< 2e2c07104b4904aed1389a59b25799b95a85b5b9 |
affected | ||
32021982a324dce93b4ae00c06213bf45fb319c8< 13c5a9fb07105557a1fa9efdb4f23d7ef30b7274 |
affected | ||
32021982a324dce93b4ae00c06213bf45fb319c8< ec78418801ef7b0c22cd6a30145ec480dd48db39 |
affected | ||
32021982a324dce93b4ae00c06213bf45fb319c8< 79d72c68c58784a3e1cd2378669d51bfd0cb7498 |
affected | ||
5.1 |
affected | ||
| … +8 条更多 | |||
获取后续新漏洞提醒
登录后订阅
一、 漏洞 CVE-2024-26688 基础信息
漏洞信息
对漏洞内容有疑问？看看神龙的深度分析是否有帮助！
查看神龙十问 ↗
尽管我们使用了先进的大模型技术，但其输出仍可能包含不准确或过时的信息。神龙努力确保数据的准确性，但请您根据实际情况进行核实和判断。
Vulnerability Title
fs,hugetlb: fix NULL pointer dereference in hugetlbs_fill_super
来源: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved:
fs,hugetlb: fix NULL pointer dereference in hugetlbs_fill_super
When configuring a hugetlb filesystem via the fsconfig() syscall, there is
a possible NULL dereference in hugetlbfs_fill_super() caused by assigning
NULL to ctx->hstate in hugetlbfs_parse_param() when the requested pagesize
is non valid.
E.g: Taking the following steps:
fd = fsopen("hugetlbfs", FSOPEN_CLOEXEC);
fsconfig(fd, FSCONFIG_SET_STRING, "pagesize", "1024", 0);
fsconfig(fd, FSCONFIG_CMD_CREATE, NULL, NULL, 0);
Given that the requested "pagesize" is invalid, ctxt->hstate will be replaced
with NULL, losing its previous value, and we will print an error:
...
...
case Opt_pagesize:
ps = memparse(param->string, &rest);
ctx->hstate = h;
if (!ctx->hstate) {
pr_err("Unsupported page size %lu MB\n", ps / SZ_1M);
return -EINVAL;
}
return 0;
...
...
This is a problem because later on, we will dereference ctxt->hstate in
hugetlbfs_fill_super()
...
...
sb->s_blocksize = huge_page_size(ctx->hstate);
...
...
Causing below Oops.
Fix this by replacing cxt->hstate value only when then pagesize is known
to be valid.
kernel: hugetlbfs: Unsupported page size 0 MB
kernel: BUG: kernel NULL pointer dereference, address: 0000000000000028
kernel: #PF: supervisor read access in kernel mode
kernel: #PF: error_code(0x0000) - not-present page
kernel: PGD 800000010f66c067 P4D 800000010f66c067 PUD 1b22f8067 PMD 0
kernel: Oops: 0000 [#1] PREEMPT SMP PTI
kernel: CPU: 4 PID: 5659 Comm: syscall Tainted: G E 6.8.0-rc2-default+ #22 5a47c3fef76212addcc6eb71344aabc35190ae8f
kernel: Hardware name: Intel Corp. GROVEPORT/GROVEPORT, BIOS GVPRCRB1.86B.0016.D04.1705030402 05/03/2017
kernel: RIP: 0010:hugetlbfs_fill_super+0xb4/0x1a0
kernel: Code: 48 8b 3b e8 3e c6 ed ff 48 85 c0 48 89 45 20 0f 84 d6 00 00 00 48 b8 ff ff ff ff ff ff ff 7f 4c 89 e7 49 89 44 24 20 48 8b 03 <8b> 48 28 b8 00 10 00 00 48 d3 e0 49 89 44 24 18 48 8b 03 8b 40 28
kernel: RSP: 0018:ffffbe9960fcbd48 EFLAGS: 00010246
kernel: RAX: 0000000000000000 RBX: ffff9af5272ae780 RCX: 0000000000372004
kernel: RDX: ffffffffffffffff RSI: ffffffffffffffff RDI: ffff9af555e9b000
kernel: RBP: ffff9af52ee66b00 R08: 0000000000000040 R09: 0000000000370004
kernel: R10: ffffbe9960fcbd48 R11: 0000000000000040 R12: ffff9af555e9b000
kernel: R13: ffffffffa66b86c0 R14: ffff9af507d2f400 R15: ffff9af507d2f400
kernel: FS: 00007ffbc0ba4740(0000) GS:ffff9b0bd7000000(0000) knlGS:0000000000000000
kernel: CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
kernel: CR2: 0000000000000028 CR3: 00000001b1ee0000 CR4: 00000000001506f0
kernel: Call Trace:
kernel: <TASK>
kernel: ? __die_body+0x1a/0x60
kernel: ? page_fault_oops+0x16f/0x4a0
kernel: ? search_bpf_extables+0x65/0x70
kernel: ? fixup_exception+0x22/0x310
kernel: ? exc_page_fault+0x69/0x150
kernel: ? asm_exc_page_fault+0x22/0x30
kernel: ? __pfx_hugetlbfs_fill_super+0x10/0x10
kernel: ? hugetlbfs_fill_super+0xb4/0x1a0
kernel: ? hugetlbfs_fill_super+0x28/0x1a0
kernel: ? __pfx_hugetlbfs_fill_super+0x10/0x10
kernel: vfs_get_super+0x40/0xa0
kernel: ? __pfx_bpf_lsm_capable+0x10/0x10
kernel: vfs_get_tree+0x25/0xd0
kernel: vfs_cmd_create+0x64/0xe0
kernel: __x64_sys_fsconfig+0x395/0x410
kernel: do_syscall_64+0x80/0x160
kernel: ? syscall_exit_to_user_mode+0x82/0x240
kernel: ? do_syscall_64+0x8d/0x160
kernel: ? syscall_exit_to_user_mode+0x82/0x240
kernel: ? do_syscall_64+0x8d/0x160
kernel: ? exc_page_fault+0x69/0x150
kernel: entry_SYSCALL_64_after_hwframe+0x6e/0x76
kernel: RIP: 0033:0x7ffbc0cb87c9
kernel: Code: 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 66 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 97 96 0d 00 f7 d8 64 89 01 48
kernel: RSP: 002b:00007ffc29d2f388 EFLAGS: 00000206 ORIG_RAX: 00000000000001af
kernel: RAX: fffffffffff
---truncated---
来源: CVE Program / CVE List V5
CVSS Information
N/A
来源: CVE Program / CVE List V5
Vulnerability Type
N/A
来源: CVE Program / CVE List V5
Vulnerability Title
Linux kernel 安全漏洞
来源: 中国国家信息安全漏洞库 CNNVD
Vulnerability Description
Linux kernel是美国Linux基金会的开源操作系统Linux所使用的内核。 Linux kernel存在安全漏洞，该漏洞源于空指针取消引用。
来源: 中国国家信息安全漏洞库 CNNVD
CVSS Information
N/A
来源: 中国国家信息安全漏洞库 CNNVD
Vulnerability Type
N/A
来源: 中国国家信息安全漏洞库 CNNVD
受影响产品
二、漏洞 CVE-2024-26688 的公开POC
| # | POC 描述 | 源链接 | 神龙链接 |
|---|
AI 生成 POC
高级
未找到公开 POC。
登录以生成 AI POC三、漏洞 CVE-2024-26688 的情报信息
请登录查看更多情报信息。
CVE-2024-26688 邮件列表归档 (1)
CVE-2024-26688 其他参考 (7)
同批安全公告 · Linux · 2024-04-03 · 共 94 条
| CVE-2024-26760 | 9.8 CRITICAL | Linux kernel 安全漏洞 |
| CVE-2024-26779 | 8.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2024-26689 | 8.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2024-26692 | 8.3 HIGH | Linux kernel 安全漏洞 |
| CVE-2024-26736 | 8.1 HIGH | Linux kernel 安全漏洞 |
| CVE-2024-26699 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2024-26739 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2024-26762 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2024-26766 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2024-26772 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2024-26773 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2024-26748 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2024-26697 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2024-26737 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2024-26718 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2024-26712 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2023-52637 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2024-26706 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2024-26728 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2024-26704 | 7.8 HIGH | Linux kernel 安全漏洞 |
显示前 20 条，共 94 条。 查看全部 → →
IV. Related Vulnerabilities
V. Comments for CVE-2024-26688
暂无评论