CVE-2024-47677

exfat: resolve memory leak from exfat_create_upcase_table()

MEDIUM
5.5
CVSS Score
Published: October 21, 2024 at 11:53 AM UTC
Updated: June 17, 2026 at 07:57 AM UTC
1 product affected across 1 vendorLinux Kernel

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Severity
MEDIUM5.5
Exploit prediction
EPSS 0.2%
SSVC
No known exploit

Description

In the Linux kernel, the following vulnerability has been resolved: exfat: resolve memory leak from exfat_create_upcase_table() If exfat_load_upcase_table reaches end and returns -EINVAL, allocated memory doesn't get freed and while exfat_load_default_upcase_table allocates more memory, leading to a memory leak. Here's link to syzkaller crash report illustrating this issue: https://syzkaller.appspot.com/text?tag=CrashReport&x=1406c201980000

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

6.11 ≤ v < 6.11.26.8 ≤ v < 6.10.136.8 ≤ v < 6.11.26.8 ≤ v < 6.126.8a13d1a4de3b0fe3c41d818697d691c886c5585fa
Vendor states this is fixed in 331ed2c739ce656a67865f6b3ee0a478349d78cb (fixed)
Vendor states this is fixed in c290fe508eee36df1640c3cb35dc8f89e073c8a8 (fixed)
Vendor states this is fixed in f9835aec49670c46ebe2973032caaa1043b3d4da (fixed)
Vendor states this is fixed in 6.10.13 (unaffected)
Vendor states this is fixed in 6.11.2 (unaffected)
Vendor states this is fixed in 6.12 (unaffected)
Vendor states this is fixed in 6.8 (unaffected)

References (3)

Patch
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/331ed2c739ce656a67865f6b3ee0a478349d78cb
Patch
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/c290fe508eee36df1640c3cb35dc8f89e073c8a8
Patch
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/f9835aec49670c46ebe2973032caaa1043b3d4da

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

Attack Vector
LOCAL
Complexity
LOW
Privileges
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Vector?

Quick Info

StatusANALYZED
CWE
CWE-401

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