Bug 2271481 (CVE-2021-47141) - CVE-2021-47141 kernel: gve: Add NULL pointer checks when freeing irqs.
Summary: CVE-2021-47141 kernel: gve: Add NULL pointer checks when freeing irqs.
Keywords:
Status: NEW
Alias: CVE-2021-47141
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Product Security
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks: 2271565
TreeView+ depends on / blocked
 
Reported: 2024-03-25 17:51 UTC by Mauro Matteo Cascella
Modified: 2024-06-24 12:48 UTC (History)
49 users (show)

Fixed In Version: kernel 5.4.124, kernel 5.10.42, kernel 5.12.9, kernel 5.13
Doc Type: If docs needed, set a value
Doc Text:
A vulnerability was found in the Generic Virtual Ethernet (gve) driver in the Linux kernel. A NULL pointer dereference could occur during the freeing of notification blocks. This issue arises when attempting to index priv->msix_vectors without prior allocation, potentially leading to a crash if the driver is unloaded.
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Description Mauro Matteo Cascella 2024-03-25 17:51:12 UTC 
In the Linux kernel, the following vulnerability has been resolved:

gve: Add NULL pointer checks when freeing irqs.

The Linux kernel CVE team has assigned CVE-2021-47141 to this issue.

Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2024032557-CVE-2021-47141-ce47@gregkh/T
Comment 2 Alex 2024-06-09 15:12:07 UTC 
The result of automatic check (that is developed by Alexander Larkin) for this CVE-2021-47141 is: CHECK	Maybe valid. Check manually. with impact MODERATE (that is approximation based on flags REMOTE NULLPTR INIT SIMPLEFIX NETWORK  ; these flags parsed automatically based on patche data). Such automatic check happens only for Low/Moderates (and only when not from reporter, but parsing already existing CVE). Highs always checked manually (I check it myself and then we check it again in Remediation team). In rare cases some of the Moderates could be increased to High later.
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