CVE - CVE-2022-50226

CVE-ID
CVE-2022-50226	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: crypto: ccp - Use kzalloc for sev ioctl interfaces to prevent kernel memory leak For some sev ioctl interfaces, input may be passed that is less than or equal to SEV_FW_BLOB_MAX_SIZE, but larger than the data that PSP firmware returns. In this case, kmalloc will allocate memory that is the size of the input rather than the size of the data. Since PSP firmware doesn't fully overwrite the buffer, the sev ioctl interfaces with the issue may return uninitialized slab memory. Currently, all of the ioctl interfaces in the ccp driver are safe, but to prevent future problems, change all ioctl interfaces that allocate memory with kmalloc to use kzalloc and memset the data buffer to zero in sev_ioctl_do_platform_status.
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/13dc15a3f5fd7f884e4bfa8c011a0ae868df12ae URL:https://git.kernel.org/stable/c/13dc15a3f5fd7f884e4bfa8c011a0ae868df12ae MISC:https://git.kernel.org/stable/c/4c5300f6f5e18b11c02a92f136e69b98fddba15e URL:https://git.kernel.org/stable/c/4c5300f6f5e18b11c02a92f136e69b98fddba15e MISC:https://git.kernel.org/stable/c/caa395aa16e7c9193fd7fa6cde462dd8229d4953 URL:https://git.kernel.org/stable/c/caa395aa16e7c9193fd7fa6cde462dd8229d4953 MISC:https://git.kernel.org/stable/c/e11fb0a3a39bb42da35fa662c46ce7391f277436 URL:https://git.kernel.org/stable/c/e11fb0a3a39bb42da35fa662c46ce7391f277436 MISC:https://git.kernel.org/stable/c/f2a920daa780956b987c14b9f23de7c3c8915bf2 URL:https://git.kernel.org/stable/c/f2a920daa780956b987c14b9f23de7c3c8915bf2
Assigning CNA
kernel.org
Date Record Created
20250618	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 (20250618)
Votes (Legacy)

Comments (Legacy)

Proposed (Legacy)
N/A
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