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CVE-2019-25160— netlabel: fix out-of-bounds memory accesses

Quick assessment

Affected
Linux Linux
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

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，该漏洞源于数组cipso_v4_map_lvl_valid和netlbl_bitmap_walk 存在越界内存访问漏洞。

CVSS 9.1 · Critical EPSS 0.75% · P54

Possible ATT&CK Techniques 1 AI

T1203 · Exploitation for Client Execution

Affected Version Matrix 18

VendorProduct Version RangeStatus
Linux Linux 446fda4f26822b2d42ab3396aafcedf38a9ff2b6< 97bc3683c24999ee621d847c9348c75d2fe86272 affected
446fda4f26822b2d42ab3396aafcedf38a9ff2b6< c61d01faa5550e06794dcf86125ccd325bfad950 affected
446fda4f26822b2d42ab3396aafcedf38a9ff2b6< dc18101f95fa6e815f426316b8b9a5cee28a334e affected
446fda4f26822b2d42ab3396aafcedf38a9ff2b6< 1c973f9c7cc2b3caae93192fdc8ecb3f0b4ac000 affected
446fda4f26822b2d42ab3396aafcedf38a9ff2b6< fcfe700acdc1c72eab231300e82b962bac2b2b2c affected
446fda4f26822b2d42ab3396aafcedf38a9ff2b6< e3713abc4248aa6bcc11173d754c418b02a62cbb affected
446fda4f26822b2d42ab3396aafcedf38a9ff2b6< fbf9578919d6c91100ec63acf2cba641383f6c78 affected
446fda4f26822b2d42ab3396aafcedf38a9ff2b6< 5578de4834fe0f2a34fedc7374be691443396d1f affected
… +10 more rows
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I. Basic Information for CVE-2019-25160

Vulnerability Information
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Vulnerability Title
netlabel: fix out-of-bounds memory accesses
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: netlabel: fix out-of-bounds memory accesses There are two array out-of-bounds memory accesses, one in cipso_v4_map_lvl_valid(), the other in netlbl_bitmap_walk(). Both errors are embarassingly simple, and the fixes are straightforward. As a FYI for anyone backporting this patch to kernels prior to v4.8, you'll want to apply the netlbl_bitmap_walk() patch to cipso_v4_bitmap_walk() as netlbl_bitmap_walk() doesn't exist before Linux v4.8.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Vulnerability Title
Linux kernel 安全漏洞
Source: CNNVD (China National Vulnerability Database)
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，该漏洞源于数组cipso_v4_map_lvl_valid和netlbl_bitmap_walk 存在越界内存访问漏洞。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Linux Linux 446fda4f26822b2d42ab3396aafcedf38a9ff2b6 ~ 97bc3683c24999ee621d847c9348c75d2fe86272 -
Linux Linux 2.6.19 -

II. Public POCs for CVE-2019-25160

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III. Intelligence Information for CVE-2019-25160

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Other References for CVE-2019-25160 (7)

Same Patch Batch · Linux · 2024-02-26 · 6 CVEs total

CVE-2019-25162 7.8 HIGH i2c: Fix a potential use after free
CVE-2023-52474 7.8 HIGH IB/hfi1: Fix bugs with non-PAGE_SIZE-end multi-iovec user SDMA requests
CVE-2024-26606 binder: signal epoll threads of self-work
CVE-2020-36775 f2fs: fix to avoid potential deadlock
CVE-2021-46906 HID: usbhid: fix info leak in hid_submit_ctrl

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2019-25160

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