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CVE-2024-42115— 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jffs2模块中在jffs2_free_inode中，由于内存测试期间设置为5a5a5a5a，导致未初始化的内存访问，可能触发非法地址访问。

CVSS 7.8 · High EPSS 0.26% · P17

影响版本矩阵 29

厂商产品 版本范围状态
Linux Linux e22c11da0a8683d22011bbce18da493c079d67b3< b6c8b3e31eb88c85094d848a0bd8b4bafe67e4d8 affected
4fdcfab5b5537c21891e22e65996d4d0dd8ab4ca< 0b3246052e01e61a55bb3a15b76acb006759fe67 affected
4fdcfab5b5537c21891e22e65996d4d0dd8ab4ca< 6d6d94287f6365282bbf41e9a5b5281985970789 affected
4fdcfab5b5537c21891e22e65996d4d0dd8ab4ca< 5ca26334fc8a3711fed14db7f9eb1c621be4df65 affected
4fdcfab5b5537c21891e22e65996d4d0dd8ab4ca< 751987a5d8ead0cc405fad96e83ebbaa51c82dbc affected
4fdcfab5b5537c21891e22e65996d4d0dd8ab4ca< d0bbbf31462a400bef4df33e22de91864f475455 affected
4fdcfab5b5537c21891e22e65996d4d0dd8ab4ca< 05fc1ef892f862c1197b11b288bc00f602d2df0c affected
4fdcfab5b5537c21891e22e65996d4d0dd8ab4ca< af9a8730ddb6a4b2edd779ccc0aceb994d616830 affected
… +21 条更多
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一、 漏洞 CVE-2024-42115 基础信息

漏洞信息
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Vulnerability Title
jffs2: Fix potential illegal address access in jffs2_free_inode
来源: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: jffs2: Fix potential illegal address access in jffs2_free_inode During the stress testing of the jffs2 file system,the following abnormal printouts were found: [ 2430.649000] Unable to handle kernel paging request at virtual address 0069696969696948 [ 2430.649622] Mem abort info: [ 2430.649829] ESR = 0x96000004 [ 2430.650115] EC = 0x25: DABT (current EL), IL = 32 bits [ 2430.650564] SET = 0, FnV = 0 [ 2430.650795] EA = 0, S1PTW = 0 [ 2430.651032] FSC = 0x04: level 0 translation fault [ 2430.651446] Data abort info: [ 2430.651683] ISV = 0, ISS = 0x00000004 [ 2430.652001] CM = 0, WnR = 0 [ 2430.652558] [0069696969696948] address between user and kernel address ranges [ 2430.653265] Internal error: Oops: 96000004 [#1] PREEMPT SMP [ 2430.654512] CPU: 2 PID: 20919 Comm: cat Not tainted 5.15.25-g512f31242bf6 #33 [ 2430.655008] Hardware name: linux,dummy-virt (DT) [ 2430.655517] pstate: 20000005 (nzCv daif -PAN -UAO -TCO -DIT -SSBS BTYPE=--) [ 2430.656142] pc : kfree+0x78/0x348 [ 2430.656630] lr : jffs2_free_inode+0x24/0x48 [ 2430.657051] sp : ffff800009eebd10 [ 2430.657355] x29: ffff800009eebd10 x28: 0000000000000001 x27: 0000000000000000 [ 2430.658327] x26: ffff000038f09d80 x25: 0080000000000000 x24: ffff800009d38000 [ 2430.658919] x23: 5a5a5a5a5a5a5a5a x22: ffff000038f09d80 x21: ffff8000084f0d14 [ 2430.659434] x20: ffff0000bf9a6ac0 x19: 0169696969696940 x18: 0000000000000000 [ 2430.659969] x17: ffff8000b6506000 x16: ffff800009eec000 x15: 0000000000004000 [ 2430.660637] x14: 0000000000000000 x13: 00000001000820a1 x12: 00000000000d1b19 [ 2430.661345] x11: 0004000800000000 x10: 0000000000000001 x9 : ffff8000084f0d14 [ 2430.662025] x8 : ffff0000bf9a6b40 x7 : ffff0000bf9a6b48 x6 : 0000000003470302 [ 2430.662695] x5 : ffff00002e41dcc0 x4 : ffff0000bf9aa3b0 x3 : 0000000003470342 [ 2430.663486] x2 : 0000000000000000 x1 : ffff8000084f0d14 x0 : fffffc0000000000 [ 2430.664217] Call trace: [ 2430.664528] kfree+0x78/0x348 [ 2430.664855] jffs2_free_inode+0x24/0x48 [ 2430.665233] i_callback+0x24/0x50 [ 2430.665528] rcu_do_batch+0x1ac/0x448 [ 2430.665892] rcu_core+0x28c/0x3c8 [ 2430.666151] rcu_core_si+0x18/0x28 [ 2430.666473] __do_softirq+0x138/0x3cc [ 2430.666781] irq_exit+0xf0/0x110 [ 2430.667065] handle_domain_irq+0x6c/0x98 [ 2430.667447] gic_handle_irq+0xac/0xe8 [ 2430.667739] call_on_irq_stack+0x28/0x54 The parameter passed to kfree was 5a5a5a5a, which corresponds to the target field of the jffs_inode_info structure. It was found that all variables in the jffs_inode_info structure were 5a5a5a5a, except for the first member sem. It is suspected that these variables are not initialized because they were set to 5a5a5a5a during memory testing, which is meant to detect uninitialized memory.The sem variable is initialized in the function jffs2_i_init_once, while other members are initialized in the function jffs2_init_inode_info. The function jffs2_init_inode_info is called after iget_locked, but in the iget_locked function, the destroy_inode process is triggered, which releases the inode and consequently, the target member of the inode is not initialized.In concurrent high pressure scenarios, iget_locked may enter the destroy_inode branch as described in the code. Since the destroy_inode functionality of jffs2 only releases the target, the fix method is to set target to NULL in jffs2_i_init_once.
来源: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
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jffs2模块中在jffs2_free_inode中，由于内存测试期间设置为5a5a5a5a，导致未初始化的内存访问，可能触发非法地址访问。
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 e22c11da0a8683d22011bbce18da493c079d67b3 ~ b6c8b3e31eb88c85094d848a0bd8b4bafe67e4d8 -
Linux Linux 5.1 -

二、漏洞 CVE-2024-42115 的公开POC

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三、漏洞 CVE-2024-42115 的情报信息

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CVE-2024-42115 其他参考 (8)

同批安全公告 · Linux · 2024-07-30 · 共 70 条

CVE-2024-42108 9.8 CRITICAL Linux kernel 安全漏洞
CVE-2024-42225 8.3 HIGH Linux kernel 安全漏洞
CVE-2024-42120 7.8 HIGH Linux kernel 安全漏洞
CVE-2024-42117 7.8 HIGH Linux kernel 安全漏洞
CVE-2024-42112 7.8 HIGH Linux kernel 安全漏洞
CVE-2024-42111 7.8 HIGH Linux kernel 安全漏洞
CVE-2024-42109 7.8 HIGH Linux kernel 安全漏洞
CVE-2024-42105 7.8 HIGH Linux kernel 安全漏洞
CVE-2024-42104 7.8 HIGH Linux kernel 安全漏洞
CVE-2024-42103 7.8 HIGH Linux kernel 安全漏洞
CVE-2024-42162 7.8 HIGH Linux kernel 安全漏洞
CVE-2024-42099 7.8 HIGH Linux kernel 安全漏洞
CVE-2024-42132 7.6 HIGH Linux kernel 安全漏洞
CVE-2024-42133 7.6 HIGH Linux kernel 安全漏洞
CVE-2024-42110 7.5 HIGH Linux kernel 安全漏洞
CVE-2024-42145 7.5 HIGH Linux kernel 安全漏洞
CVE-2024-42152 7.5 HIGH Linux kernel 安全漏洞
CVE-2024-42123 7.0 HIGH Linux kernel 安全漏洞
CVE-2024-42224 7.0 HIGH Linux kernel 安全漏洞
CVE-2024-42161 Linux kernel 安全漏洞

显示前 20 条，共 70 条。 查看全部 &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2024-42115

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