CVE - CVE-2025-38312

CVE-ID
CVE-2025-38312	Learn more at National Vulnerability Database (NVD) • CVSS Severity Rating • Fix Information • Vulnerable Software Versions • SCAP Mappings • CPE Information
Description
In the Linux kernel, the following vulnerability has been resolved: fbdev: core: fbcvt: avoid division by 0 in fb_cvt_hperiod() In fb_find_mode_cvt(), iff mode->refresh somehow happens to be 0x80000000, cvt.f_refresh will become 0 when multiplying it by 2 due to overflow. It's then passed to fb_cvt_hperiod(), where it's used as a divider -- division by 0 will result in kernel oops. Add a sanity check for cvt.f_refresh to avoid such overflow... Found by Linux Verification Center (linuxtesting.org) with the Svace static analysis tool.
References
Note: References are provided for the convenience of the reader to help distinguish between vulnerabilities. The list is not intended to be complete.
MISC:https://git.kernel.org/stable/c/2d63433e8eaa3c91b2948190e395bc67009db0d9 URL:https://git.kernel.org/stable/c/2d63433e8eaa3c91b2948190e395bc67009db0d9 MISC:https://git.kernel.org/stable/c/3f6dae09fc8c306eb70fdfef70726e1f154e173a URL:https://git.kernel.org/stable/c/3f6dae09fc8c306eb70fdfef70726e1f154e173a MISC:https://git.kernel.org/stable/c/53784073cbad18f75583fd3da9ffdfc4d1f05405 URL:https://git.kernel.org/stable/c/53784073cbad18f75583fd3da9ffdfc4d1f05405 MISC:https://git.kernel.org/stable/c/54947530663edcbaaee1314c01fdd8c72861b124 URL:https://git.kernel.org/stable/c/54947530663edcbaaee1314c01fdd8c72861b124 MISC:https://git.kernel.org/stable/c/610f247f2772e4f92b63442125a1b7ade79898d8 URL:https://git.kernel.org/stable/c/610f247f2772e4f92b63442125a1b7ade79898d8 MISC:https://git.kernel.org/stable/c/9027ce4c037b566b658b8939a76326b7125e3627 URL:https://git.kernel.org/stable/c/9027ce4c037b566b658b8939a76326b7125e3627 MISC:https://git.kernel.org/stable/c/ab91647acdf43b984824776559a452212eaeb21a URL:https://git.kernel.org/stable/c/ab91647acdf43b984824776559a452212eaeb21a MISC:https://git.kernel.org/stable/c/b235393b9f43ff86a38ca2bde6372312ea215dc5 URL:https://git.kernel.org/stable/c/b235393b9f43ff86a38ca2bde6372312ea215dc5
Assigning CNA
kernel.org
Date Record Created
20250416	Disclaimer: The record creation date may reflect when the CVE ID was allocated or reserved, and does not necessarily indicate when this vulnerability was discovered, shared with the affected vendor, publicly disclosed, or updated in CVE.
Phase (Legacy)
Assigned (20250416)
Votes (Legacy)

Comments (Legacy)

Proposed (Legacy)
N/A
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