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CVE-2024-39475— fbdev: savage: Handle err return when savagefb_check_var failed

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，该漏洞源于出现除以零的错误。

AI Predicted 4.3 Difficulty: Moderate EPSS 0.23% · P13

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application

Affected Version Matrix 26

VendorProduct Version RangeStatus
Linux Linux 224453de8505aede1890f007be973925a3edf6a1< be754cbd77eaf2932408a4e18532e4945274a5c7 affected
84dce0f6a4cc5b7bfd7242ef9290db8ac1dd77ff< 86435f39c18967cdd937d7a49ba539cdea7fb547 affected
512ee6d6041e007ef5bf200c6e388e172a2c5b24< 32f92b0078ebf79dbe4827288e0acb50d89d3d5b affected
8c54acf33e5adaad6374bf3ec1e3aff0591cc8e1< 4b2c67e30b4e1d2ae19dba8b8e8f3b5fd3cf8089 affected
070398d32c5f3ab0e890374904ad94551c76aec4< edaa57480b876e8203b51df7c3d14a51ea6b09e3 affected
bc3c2e58d73b28b9a8789fca84778ee165a72d13< b8385ff814ca4cb7e63789841e6ec2a14c73e1e8 affected
04e5eac8f3ab2ff52fa191c187a46d4fdbc1e288< 5f446859bfa46df0ffb34149499f48a2c2d8cd95 affected
04e5eac8f3ab2ff52fa191c187a46d4fdbc1e288< 6ad959b6703e2c4c5d7af03b4cfd5ff608036339 affected
… +18 more rows
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I. Basic Information for CVE-2024-39475

Vulnerability Information
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Vulnerability Title
fbdev: savage: Handle err return when savagefb_check_var failed
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: fbdev: savage: Handle err return when savagefb_check_var failed The commit 04e5eac8f3ab("fbdev: savage: Error out if pixclock equals zero") checks the value of pixclock to avoid divide-by-zero error. However the function savagefb_probe doesn't handle the error return of savagefb_check_var. When pixclock is 0, it will cause divide-by-zero error.
Source: CVE Program / CVE List V5
CVSS Information
N/A
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，该漏洞源于出现除以零的错误。
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 224453de8505aede1890f007be973925a3edf6a1 ~ be754cbd77eaf2932408a4e18532e4945274a5c7 -
Linux Linux 6.8 -

II. Public POCs for CVE-2024-39475

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III. Intelligence Information for CVE-2024-39475

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Other References for CVE-2024-39475 (8)

Same Patch Batch · Linux · 2024-07-05 · 14 CVEs total

CVE-2024-39480 8.4 HIGH kdb: Fix buffer overflow during tab-complete
CVE-2024-39482 7.8 HIGH bcache: fix variable length array abuse in btree_iter
CVE-2024-39481 7.8 HIGH media: mc: Fix graph walk in media_pipeline_start
CVE-2024-39479 7.8 HIGH drm/i915/hwmon: Get rid of devm
CVE-2024-39478 7.8 HIGH crypto: starfive - Do not free stack buffer
CVE-2024-39477 7.8 HIGH mm/hugetlb: do not call vma_add_reservation upon ENOMEM
CVE-2024-39472 7.3 HIGH xfs: fix log recovery buffer allocation for the legacy h_size fixup
CVE-2024-39483 7.1 HIGH KVM: SVM: WARN on vNMI + NMI window iff NMIs are outright masked
CVE-2024-39485 media: v4l: async: Properly re-initialise notifier entry in unregister
CVE-2024-39484 mmc: davinci: Don't strip remove function when driver is builtin
CVE-2024-39476 md/raid5: fix deadlock that raid5d() wait for itself to clear MD_SB_CHANGE_PENDING
CVE-2024-39474 mm/vmalloc: fix vmalloc which may return null if called with __GFP_NOFAIL
CVE-2024-39473 ASoC: SOF: ipc4-topology: Fix input format query of process modules without base extension

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2024-39475

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