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CVE-2024-36964— fs/9p: only translate RWX permissions for plain 9P2000

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 fs/9p 中存在安全问题。

CVSS 8.8 · High EPSS 0.50% · P42

Possible ATT&CK Techniques 1 AI

T1068 · Exploitation for Privilege Escalation

Affected Version Matrix 20

VendorProduct Version RangeStatus
Linux Linux 45089142b1497dab2327d60f6c71c40766fc3ea4< e90bc596a74bb905e0a45bf346038c3f9d1e868d affected
45089142b1497dab2327d60f6c71c40766fc3ea4< df1962a199783ecd66734d563caf0fedecf08f96 affected
45089142b1497dab2327d60f6c71c40766fc3ea4< 5a605930e19f451294bd838754f7d66c976a8a2c affected
45089142b1497dab2327d60f6c71c40766fc3ea4< ad4f65328661392de74e3608bb736fedf3b67e32 affected
45089142b1497dab2327d60f6c71c40766fc3ea4< ca9b5c81f0c918c63d73d962ed8a8e231f840bc8 affected
45089142b1497dab2327d60f6c71c40766fc3ea4< e55c601af3b1223a84f9f27f9cdbd2af5e203bf3 affected
45089142b1497dab2327d60f6c71c40766fc3ea4< 157d468e34fdd3cb1ddc07c2be32fb3b02826b02 affected
45089142b1497dab2327d60f6c71c40766fc3ea4< cd25e15e57e68a6b18dc9323047fe9c68b99290b affected
… +12 more rows
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I. Basic Information for CVE-2024-36964

Vulnerability Information
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Vulnerability Title
fs/9p: only translate RWX permissions for plain 9P2000
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: fs/9p: only translate RWX permissions for plain 9P2000 Garbage in plain 9P2000's perm bits is allowed through, which causes it to be able to set (among others) the suid bit. This was presumably not the intent since the unix extended bits are handled explicitly and conditionally on .u.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/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 fs/9p 中存在安全问题。
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 45089142b1497dab2327d60f6c71c40766fc3ea4 ~ e90bc596a74bb905e0a45bf346038c3f9d1e868d -
Linux Linux 3.1 -

II. Public POCs for CVE-2024-36964

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III. Intelligence Information for CVE-2024-36964

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Mailing List Discussions for CVE-2024-36964 (1)

Other References for CVE-2024-36964 (8)

Same Patch Batch · Linux · 2024-06-03 · 5 CVEs total

CVE-2024-36961 7.8 HIGH thermal/debugfs: Fix two locking issues with thermal zone debug
CVE-2024-36963 7.8 HIGH tracefs: Reset permissions on remount if permissions are options
CVE-2024-36962 7.5 HIGH net: ks8851: Queue RX packets in IRQ handler instead of disabling BHs
CVE-2024-36960 7.1 HIGH drm/vmwgfx: Fix invalid reads in fence signaled events

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2024-36964

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