ALSA: serial-u16550: Check card index validity at probe
Published Sep 11, 2026
5.5
MEDIUMCVSS 3.1
EPSS 0.18%
Description
serial-u16550 driver blindly trusts that the given devptr->id value is within the proper card index range at probe. It's OK for the devices the driver itself creates at the module probe time, but if the device is bound manually via sysfs interface, this could be -1 as "none", and this leads to OOB access for index[] and other parameters.
Add a sanity check for the card index and warn/correct it if it's a value out of the range.
Affected products
-
Affected
- ≥ , <
- ≥ , <
- ≥ , <
- ≥ , <
- ≥ , <
- ≥ , <
- ≥ , <
- ≥ , <
-
Affected
- 2.6.16
Unaffected
- ≥ 0, < 2.6.16
- ≥ 5.10.270, ≤ 5.10.*
- ≥ 5.15.221, ≤ 5.15.*
- ≥ 6.1.188, ≤ 6.1.*
- ≥ 6.12.109, ≤ 6.12.*
- ≥ 6.18.50, ≤ 6.18.*
- ≥ 6.6.157, ≤ 6.6.*
- ≥ 7.2.4, ≤ 7.2.*
- 7.3-rc1
Default status is the baseline for the product. Each version can override it (patched versions can be marked unaffected).
| Vendor | Product | Default status | Versions |
|---|---|---|---|
| Linux | Linux | unaffected | Affected
|
| Linux | Linux | affected | Affected
Unaffected
|
No data.
No data.
Red Hat Enterprise Linux 10
kernel
Not affected
Red Hat Enterprise Linux 10
kernel-rt
Not affected
Red Hat Enterprise Linux 6
kernel
Not affected
Red Hat Enterprise Linux 7
kernel
Not affected
Red Hat Enterprise Linux 7
kernel-rt
Not affected
Red Hat Enterprise Linux 8
kernel
Not affected
Red Hat Enterprise Linux 8
kernel-rt
Not affected
Red Hat Enterprise Linux 9
kernel
Not affected
Red Hat Enterprise Linux 9
kernel-rt
Not affected
Red Hat OpenShift Container Platform 4
openshift/ose-rhel-coreos-8
Not affected
Red Hat OpenShift Container Platform 4
openshift/ose-rhel-coreos-9
Not affected
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 10 | kernel | Not affected | n/a |
| Red Hat Enterprise Linux 10 | kernel-rt | Not affected | n/a |
| Red Hat Enterprise Linux 6 | kernel | Not affected | n/a |
| Red Hat Enterprise Linux 7 | kernel | Not affected | n/a |
| Red Hat Enterprise Linux 7 | kernel-rt | Not affected | n/a |
| Red Hat Enterprise Linux 8 | kernel | Not affected | n/a |
| Red Hat Enterprise Linux 8 | kernel-rt | Not affected | n/a |
| Red Hat Enterprise Linux 9 | kernel | Not affected | n/a |
| Red Hat Enterprise Linux 9 | kernel-rt | Not affected | n/a |
| Red Hat OpenShift Container Platform 4 | openshift/ose-rhel-coreos-8 | Not affected | n/a |
| Red Hat OpenShift Container Platform 4 | openshift/ose-rhel-coreos-9 | Not affected | n/a |
No package ranges for this CVE.
Remediation
No remediation recorded yet.
References (14)
- https://access.redhat.com/security/cve/CVE-2026-80965 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=2532257 Issue Tracking
- https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-76288 Advisory
- https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-80965.mbox
- https://git.kernel.org/stable/c/1cb30691dc893aafcbc1e211e94764014c0f5d12
- https://git.kernel.org/stable/c/41a952304cc8a308748e3f58462c879f2a9c4340
- https://git.kernel.org/stable/c/487ede9b648fc0eb15866f408c41aac2c57f85d5
- https://git.kernel.org/stable/c/6d6fdb24fe2eaf6174fc502284c6e1dc5f7242ba
- https://git.kernel.org/stable/c/7555e83d7738e65dc83921e3c85bbdc081f08f2f
- https://git.kernel.org/stable/c/cc0f757d017f4271f137c77e130314bb23792347
- https://git.kernel.org/stable/c/e0fb960b227fcdebe22e4f26c9486d60943c0424
- https://git.kernel.org/stable/c/fbf3fb097e66fc1874e54ecc46d600d9325480d6
- https://nvd.nist.gov/vuln/detail/CVE-2026-80965
- https://www.cve.org/CVERecord?id=CVE-2026-80965
Change history (0)
No recorded changes yet.
CVE.org / MITRE
CISA Vulnrichment
No data
GitHub
No data