Bug 2425190 (CVE-2022-50762) - CVE-2022-50762 kernel: fs/ntfs3: Avoid UBSAN error on true_sectors_per_clst()
Summary: CVE-2022-50762 kernel: fs/ntfs3: Avoid UBSAN error on true_sectors_per_clst()
Keywords:
Status: NEW
Alias: CVE-2022-50762
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
unspecified
unspecified
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2025-12-24 14:09 UTC by OSIDB Bzimport
Modified: 2025-12-24 19:57 UTC (History)
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Fixed In Version:
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Description OSIDB Bzimport 2025-12-24 14:09:42 UTC 
In the Linux kernel, the following vulnerability has been resolved:

fs/ntfs3: Avoid UBSAN error on true_sectors_per_clst()

syzbot reported UBSAN error as below:

[   76.901829][ T6677] ================================================================================
[   76.903908][ T6677] UBSAN: shift-out-of-bounds in fs/ntfs3/super.c:675:13
[   76.905363][ T6677] shift exponent -247 is negative

This patch avoid this error.
Comment 1 Alexander B 2025-12-24 19:53:23 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2025122455-CVE-2022-50762-282c@gregkh/T
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