Stack Leak Risk in Linux Kernel USB MDC800 Driver (kmalloc)
CVE-2026-90034 Published on September 16, 2026
usb: image: mdc800: change kmalloc() to kzalloc()
In the Linux kernel, the following vulnerability has been resolved:
usb: image: mdc800: change kmalloc() to kzalloc()
Change the kmalloc() calls in usb_mdc800_init() for irq_urb_buffer and
download_urb_buffer to kzalloc(), avoiding potential stack leaks if a
shorter message is received in mdc800_usb_irq() and
mdc800_usb_download_notify()
Products Associated with CVE-2026-90034
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Affected Versions
Linux:- Version 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 and below 6c601410d1a9ae645f604fe2f61b9f4942c77dfb is affected.
- Version 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 and below 2df8f7720ed91f1aad4f128553b6e90c7c5fac1e is affected.
- Version 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 and below 67c6726dd6048a2781aa43a2bf9fcf1e16ee3a7d is affected.
- Version 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 and below 553c375e86a49882e95840565512e17bff31cc3a is affected.
- Version 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 and below 8c38049879f2108f57c98f03cc7f3db51a12bdab is affected.
- Version 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 and below 838455cc8bfe1278150d1d776529edea6cd4c1dd is affected.
- Version 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 and below e22428f0c038c23109c0383a235aa607b0cd4c95 is affected.
- Version 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 and below 2430eb81e44111b30eeb5273bbcf8b24ca517ef9 is affected.
- Before 5.10.270 is affected.
- Before 5.15.221 is affected.
- Before 6.1.188 is affected.
- Before 6.6.157 is affected.
- Before 6.12.110 is affected.
- Before 6.18.51 is affected.
- Before 7.2.5 is affected.
- Version 5.10.270, <= 5.10.* is unaffected.
- Version 5.15.221, <= 5.15.* is unaffected.
- Version 6.1.188, <= 6.1.* is unaffected.
- Version 6.6.157, <= 6.6.* is unaffected.
- Version 6.12.110, <= 6.12.* is unaffected.
- Version 6.18.51, <= 6.18.* is unaffected.
- Version 7.2.5, <= 7.2.* is unaffected.
- Version 7.3-rc2, <= * is unaffected.