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CVE-2024-26935— 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procfs主机目录存在安全漏洞。

AI 预测 3.7 利用难度: 极易 EPSS 0.24% · P14

影响版本矩阵 24

厂商产品 版本范围状态
Linux Linux 88c3d3bb6469cea929ac68fd326bdcbefcdfdd83< 0053f15d50d50c9312d8ab9c11e2e405812dfcac affected
68c665bb185037e7eb66fb792c61da9d7151e99c< 5c2386ba80e779a92ec3bb64ccadbedd88f779b1 affected
2a764d55e938743efa7c2cba7305633bcf227f09< cea234bb214b17d004dfdccce4491e6ff57c96ee affected
7e0ae8667fcdd99d1756922e1140cac75f5fa279< 3678cf67ff7136db1dd3bf63c361650db5d92889 affected
be03df3d4bfe7e8866d4aa43d62e648ffe884f5f< d4c34782b6d7b1e68d18d9549451b19433bd4c6c affected
be03df3d4bfe7e8866d4aa43d62e648ffe884f5f< e293c773c13b830cdc251f155df2254981abc320 affected
be03df3d4bfe7e8866d4aa43d62e648ffe884f5f< f4ff08fab66eb5c0b97e1a24edac052fb40bf5d7 affected
be03df3d4bfe7e8866d4aa43d62e648ffe884f5f< f23a4d6e07570826fe95023ca1aa96a011fa9f84 affected
… +16 条更多
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一、 漏洞 CVE-2024-26935 基础信息

漏洞信息
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Vulnerability Title
scsi: core: Fix unremoved procfs host directory regression
来源: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: scsi: core: Fix unremoved procfs host directory regression Commit fc663711b944 ("scsi: core: Remove the /proc/scsi/${proc_name} directory earlier") fixed a bug related to modules loading/unloading, by adding a call to scsi_proc_hostdir_rm() on scsi_remove_host(). But that led to a potential duplicate call to the hostdir_rm() routine, since it's also called from scsi_host_dev_release(). That triggered a regression report, which was then fixed by commit be03df3d4bfe ("scsi: core: Fix a procfs host directory removal regression"). The fix just dropped the hostdir_rm() call from dev_release(). But it happens that this proc directory is created on scsi_host_alloc(), and that function "pairs" with scsi_host_dev_release(), while scsi_remove_host() pairs with scsi_add_host(). In other words, it seems the reason for removing the proc directory on dev_release() was meant to cover cases in which a SCSI host structure was allocated, but the call to scsi_add_host() didn't happen. And that pattern happens to exist in some error paths, for example. Syzkaller causes that by using USB raw gadget device, error'ing on usb-storage driver, at usb_stor_probe2(). By checking that path, we can see that the BadDevice label leads to a scsi_host_put() after a SCSI host allocation, but there's no call to scsi_add_host() in such path. That leads to messages like this in dmesg (and a leak of the SCSI host proc structure): usb-storage 4-1:87.51: USB Mass Storage device detected proc_dir_entry 'scsi/usb-storage' already registered WARNING: CPU: 1 PID: 3519 at fs/proc/generic.c:377 proc_register+0x347/0x4e0 fs/proc/generic.c:376 The proper fix seems to still call scsi_proc_hostdir_rm() on dev_release(), but guard that with the state check for SHOST_CREATED; there is even a comment in scsi_host_dev_release() detailing that: such conditional is meant for cases where the SCSI host was allocated but there was no calls to {add,remove}_host(), like the usb-storage case. This is what we propose here and with that, the error path of usb-storage does not trigger the warning anymore.
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procfs主机目录存在安全漏洞。
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

厂商 产品 影响版本 CPE 订阅
Linux Linux 88c3d3bb6469cea929ac68fd326bdcbefcdfdd83 ~ 0053f15d50d50c9312d8ab9c11e2e405812dfcac -
Linux Linux 6.3 -

二、漏洞 CVE-2024-26935 的公开POC

# POC 描述 源链接 神龙链接
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三、漏洞 CVE-2024-26935 的情报信息

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CVE-2024-26935 邮件列表归档 (1)

CVE-2024-26935 其他参考 (8)

同批安全公告 · Linux · 2024-05-01 · 共 159 条

CVE-2024-27388 9.8 CRITICAL Linux kernel 安全漏洞
CVE-2024-26953 9.8 CRITICAL Linux kernel 安全漏洞
CVE-2024-26931 8.8 HIGH Linux kernel 安全漏洞
CVE-2024-26990 8.8 HIGH Linux kernel 安全漏洞
CVE-2024-27053 8.8 HIGH Linux kernel 安全漏洞
CVE-2024-26952 8.3 HIGH Linux kernel 安全漏洞
CVE-2024-26936 8.2 HIGH Linux kernel 安全漏洞
CVE-2024-27018 8.2 HIGH Linux kernel 安全漏洞
CVE-2024-26980 8.2 HIGH Linux kernel 安全漏洞
CVE-2024-26954 8.1 HIGH Linux kernel 安全漏洞
CVE-2024-26994 7.8 HIGH Linux kernel 安全漏洞
CVE-2024-26966 7.8 HIGH Linux kernel 安全漏洞
CVE-2024-26974 7.8 HIGH Linux kernel 安全漏洞
CVE-2024-26976 7.8 HIGH Linux kernel 安全漏洞
CVE-2024-27062 7.8 HIGH Linux kernel 安全漏洞
CVE-2024-27061 7.8 HIGH Linux kernel 安全漏洞
CVE-2024-26983 7.8 HIGH Linux kernel 安全漏洞
CVE-2024-27058 7.8 HIGH Linux kernel 安全漏洞
CVE-2024-27056 7.8 HIGH Linux kernel 安全漏洞
CVE-2024-27017 7.8 HIGH Linux kernel 安全漏洞

显示前 20 条，共 159 条。 查看全部 &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2024-26935

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