CVE-2021-44879
MEDIUM
5.5
CVSS Score
Published: February 13, 2022 at 12:00 AM UTC
Updated: October 14, 2026 at 12:17 PM UTC
1 product affected across 1 vendorLinux Kernel
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Severity
MEDIUM5.5
Exploit prediction
EPSS 1%
Description
In gc_data_segment in fs/f2fs/gc.c in the Linux kernel before 5.16.3, special files are not considered, leading to a move_data_page NULL pointer dereference.
Affected
Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.
v < 5.16.3
Affected range stops below 5.16.3, so it looks safe — our inference, not a vendor statement
Remediation
No guide yetNo remediation guidance has been written for this CVE yet. What the record does show:
References (10)
ExploitIssue TrackingVendor Advisory
Source: [email protected]
https://bugzilla.kernel.org/show_bug.cgi?id=215231Mailing ListVendor Advisory
Source: [email protected]
https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.16.3Mailing ListPatchVendor Advisory
Source: [email protected]
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=9056d6489f5a41cfbb67f719d2c0ce61ead72d9fSource: 0b142b55-0307-4c5a-b3c9-f314f3fb7c5e
https://cert-portal.siemens.com/productcert/html/ssa-398330.htmlSource: 0b142b55-0307-4c5a-b3c9-f314f3fb7c5e
https://cert-portal.siemens.com/productcert/html/ssa-613116.htmlCVSS
- Attack Vector
- LOCAL
- Complexity
- LOW
- Privileges
- NONE
- User Interaction
- REQUIRED
- Scope
- UNCHANGED
- Confidentiality
- NONE
- Integrity
- NONE
- Availability
- HIGH
Vector?
Quick Info
StatusMODIFIED
CWE
CWE-476
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