What’s Vulnerable › Vulnerabilities

CVE-2018-5873

• Severity: high (CVSS 7.0 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.5% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2018-07-06 · updated 2026-06-17
• Weakness: CWE-362

Description

An issue was discovered in the __ns_get_path function in fs/nsfs.c in the Linux kernel before 4.11. Due to a race condition when accessing files, a Use After Free condition can occur. This also affects all Android releases from CAF using the Linux kernel (Android for MSM, Firefox OS for MSM, QRD Android) before security patch level 2018-07-05.

Affected products

• Android: all versions
• Linux kernel: from 3.19 before 4.1.50; from 4.2 before 4.4.116; from 4.5 before 4.9.82; from 4.10 before 4.11 — fixed in 4.1.50, 4.11, 4.4.116, 4.9.82

How to fix

Upgrade to a fixed version: Linux kernel 4.1.50, 4.11, 4.4.116, 4.9.82. Check the vendor advisory for mitigations.

References

• http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=073c516ff73557a8f7315066856c04b50383ac34
• https://github.com/torvalds/linux/commit/073c516ff73557a8f7315066856c04b50383ac34
• https://source.android.com/security/bulletin/2018-07-01
• https://source.codeaurora.org/quic/la/kernel/msm-4.9/commit/?id=34742aaf7cb16c95edba4a7afed6d2c4fa7e434b
• https://www.codeaurora.org/security-bulletin/2018/07/02/july-2018-code-aurora-security-bulletin
• http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=073c516ff73557a8f7315066856c04b50383ac34
• https://github.com/torvalds/linux/commit/073c516ff73557a8f7315066856c04b50383ac34
• https://source.android.com/security/bulletin/2018-07-01
• https://source.codeaurora.org/quic/la/kernel/msm-4.9/commit/?id=34742aaf7cb16c95edba4a7afed6d2c4fa7e434b
• https://www.codeaurora.org/security-bulletin/2018/07/02/july-2018-code-aurora-security-bulletin

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