CVE-2026-80604: HID: core: Fix OOB read in hid_get_report for numbered reports

CVE-2026-80604: HID: core: Fix OOB read in hid_get_report for numbered reports

[Greg Kroah-Hartman]

From: Greg Kroah-Hartman <gregkh@kernel.org>

Description
===========

In the Linux kernel, the following vulnerability has been resolved:

HID: core: Fix OOB read in hid_get_report for numbered reports

When a caller passes a size of 0 to hid_report_raw_event() for a
numbered report, the function originally called hid_get_report() before
performing any size validation.

Inside hid_get_report(), if the report is numbered (report_enum->numbered
is true), it unconditionally dereferences data[0] to extract the report ID.
With a size of 0, this results in an out-of-bounds read or kernel panic.

Fix this by moving the numbered report size validation check before the
call to hid_get_report(), ensuring that size is at least 1 before
dereferencing the data pointer.

The Linux kernel CVE team has assigned CVE-2026-80604 to this issue.


Affected and fixed versions
===========================

	Issue introduced in 5.10.259 with commit 59bfdb41a34cf5d6af1c637348714c2b5a6ca676 and fixed in 5.10.261 with commit f8896b684e246f3f00f45ba2b6803ae59b9cc768
	Issue introduced in 5.15.210 with commit a4d6cb7cf45bddc76c78ed5fd683328af9e2018f and fixed in 5.15.212 with commit 30ff978af92cb51c9ba99f96fc4f4ac80d7001ba
	Issue introduced in 6.1.176 with commit 121dc93ae1fcaa4b9a601eca6b3ca2e969c2fe2f and fixed in 6.1.178 with commit c39f5765ad840b71ff8db812d0210f216cca96e4
	Issue introduced in 6.6.143 with commit 9e36568e67f817c728f9d79049d212da79109a75 and fixed in 6.6.145 with commit c973d53bcd420b58c4a34c68198746286d77e9fa
	Issue introduced in 6.12.93 with commit fb3f7ec2606cdc7c6ef30970f381e571866bfd54 and fixed in 6.12.97 with commit c1fc0d3aff26ec9ff885b3e4c92eba98cf349678
	Issue introduced in 6.18.33 with commit 509c2605065004fc4cd86ee50a9350d402785307 and fixed in 6.18.40 with commit dd395744e4ed87956fcbf81ecc6a20c51e35fa4e
	Issue introduced in 7.1 with commit 2c85c61d1332e1e16f020d76951baf167dcb6f7a and fixed in 7.1.5 with commit f7e8117e42b20c30d2a5edab82c944a5e381d791
	Issue introduced in 7.1 with commit 2c85c61d1332e1e16f020d76951baf167dcb6f7a and fixed in 7.2 with commit af1a9b65ebe8a948eda805c14b78d4d0767cb1b5
	Issue introduced in 7.0.10 with commit 710a946b1aa2c35dc56f86621f436938f31ba1a5

Please see https://www.kernel.org for a full list of currently supported
kernel versions by the kernel community.

Unaffected versions might change over time as fixes are backported to
older supported kernel versions.  The official CVE entry at
	https://cve.org/CVERecord/?id=CVE-2026-80604
will be updated if fixes are backported, please check that for the most
up to date information about this issue.


Affected files
==============

The file(s) affected by this issue are:
	drivers/hid/hid-core.c


Mitigation
==========

The Linux kernel CVE team recommends that you update to the latest
stable kernel version for this, and many other bugfixes.  Individual
changes are never tested alone, but rather are part of a larger kernel
release.  Cherry-picking individual commits is not recommended or
supported by the Linux kernel community at all.  If however, updating to
the latest release is impossible, the individual changes to resolve this
issue can be found at these commits:
	https://git.kernel.org/stable/c/f8896b684e246f3f00f45ba2b6803ae59b9cc768
	https://git.kernel.org/stable/c/30ff978af92cb51c9ba99f96fc4f4ac80d7001ba
	https://git.kernel.org/stable/c/c39f5765ad840b71ff8db812d0210f216cca96e4
	https://git.kernel.org/stable/c/c973d53bcd420b58c4a34c68198746286d77e9fa
	https://git.kernel.org/stable/c/c1fc0d3aff26ec9ff885b3e4c92eba98cf349678
	https://git.kernel.org/stable/c/dd395744e4ed87956fcbf81ecc6a20c51e35fa4e
	https://git.kernel.org/stable/c/f7e8117e42b20c30d2a5edab82c944a5e381d791
	https://git.kernel.org/stable/c/af1a9b65ebe8a948eda805c14b78d4d0767cb1b5