CVE - CVE-2022-49350

CVE-ID
CVE-2022-49350	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: net: mdio: unexport __init-annotated mdio_bus_init() EXPORT_SYMBOL and __init is a bad combination because the .init.text section is freed up after the initialization. Hence, modules cannot use symbols annotated __init. The access to a freed symbol may end up with kernel panic. modpost used to detect it, but it has been broken for a decade. Recently, I fixed modpost so it started to warn it again, then this showed up in linux-next builds. There are two ways to fix it: - Remove __init - Remove EXPORT_SYMBOL I chose the latter for this case because the only in-tree call-site, drivers/net/phy/phy_device.c is never compiled as modular. (CONFIG_PHYLIB is boolean)
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/35b42dce619701f1300fb8498dae82c9bb1f0263 URL:https://git.kernel.org/stable/c/35b42dce619701f1300fb8498dae82c9bb1f0263 MISC:https://git.kernel.org/stable/c/5534bcd7c40299862237c4a8fd9c5031b3db1538 URL:https://git.kernel.org/stable/c/5534bcd7c40299862237c4a8fd9c5031b3db1538 MISC:https://git.kernel.org/stable/c/59fa94cddf9eef8d8dae587373eed8b8f4eb11d7 URL:https://git.kernel.org/stable/c/59fa94cddf9eef8d8dae587373eed8b8f4eb11d7 MISC:https://git.kernel.org/stable/c/6a90a44d53428a3bf01bd80df9ba78b19959270c URL:https://git.kernel.org/stable/c/6a90a44d53428a3bf01bd80df9ba78b19959270c MISC:https://git.kernel.org/stable/c/7759c3222815b945a94b212bc0c6cdec475cfec2 URL:https://git.kernel.org/stable/c/7759c3222815b945a94b212bc0c6cdec475cfec2 MISC:https://git.kernel.org/stable/c/ab64ec2c75683f30ccde9eaaf0761002f901aa12 URL:https://git.kernel.org/stable/c/ab64ec2c75683f30ccde9eaaf0761002f901aa12 MISC:https://git.kernel.org/stable/c/f2f0f8c18b60ca64ff50892ed899cf1c77864755 URL:https://git.kernel.org/stable/c/f2f0f8c18b60ca64ff50892ed899cf1c77864755 MISC:https://git.kernel.org/stable/c/f5c68137f1191ba3fcf6260ec71b30be2e2bf4c3 URL:https://git.kernel.org/stable/c/f5c68137f1191ba3fcf6260ec71b30be2e2bf4c3
Assigning CNA
kernel.org
Date Record Created
20250226	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 (20250226)
Votes (Legacy)

Comments (Legacy)

Proposed (Legacy)
N/A
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