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OpenAdvisories
Unscored CVE-2024-38633 EUVD-2024-37496GHSA-fjgx-ff76-7ggv

serial: max3100: Update uart_driver_registered on driver removal

Published Jun 21, 2024 · Updated May 11, 2026 · Assigned by Linux

Vendor: Linux Product: Linux Package: linux Package: linux Package: linux-allwinner-5.19 Package: linux-aws Package: linux-aws-5.0 Package: linux-aws-5.11 Package: linux-aws-5.13 Package: linux-aws-5.15 Package: linux-aws-5.19 Package: linux-aws-5.3 Package: linux-aws-5.4 Package: linux-aws-5.8 Package: linux-aws-6.2 Package: linux-aws-6.5 Package: linux-aws-6.8 Package: linux-aws-fips Package: linux-aws-hwe Package: linux-azure Package: linux-azure-4.15 Package: linux-azure-5.11 Package: linux-azure-5.13 Package: linux-azure-5.15 Package: linux-azure-5.19 Package: linux-azure-5.3 Package: linux-azure-5.4 Package: linux-azure-5.8 Package: linux-azure-6.2 Package: linux-azure-6.5 Package: linux-azure-6.8 Package: linux-azure-edge Package: linux-azure-fde Package: linux-azure-fde-5.19 Package: linux-azure-fde-6.2 Package: linux-azure-fips Package: linux-bluefield Package: linux-fips Package: linux-gcp Package: linux-gcp-4.15 Package: linux-gcp-5.11 Package: linux-gcp-5.13 Package: linux-gcp-5.15 Package: linux-gcp-5.19 Package: linux-gcp-5.3 Package: linux-gcp-5.4 Package: linux-gcp-5.8 Package: linux-gcp-6.2 Package: linux-gcp-6.5 Package: linux-gcp-6.8 Package: linux-gcp-fips Package: linux-gke Package: linux-gke-4.15 Package: linux-gke-5.15 Package: linux-gke-5.4 Package: linux-gkeop Package: linux-gkeop-5.15 Package: linux-gkeop-5.4 Package: linux-hwe Package: linux-hwe-5.11 Package: linux-hwe-5.13 Package: linux-hwe-5.15 Package: linux-hwe-5.19 Package: linux-hwe-5.4 Package: linux-hwe-5.8 Package: linux-hwe-6.2 Package: linux-hwe-6.5 Package: linux-hwe-6.8 Package: linux-hwe-edge Package: linux-ibm Package: linux-ibm-5.15 Package: linux-ibm-5.4 Package: linux-ibm-6.8 Package: linux-intel-5.13 Package: linux-intel-iot-realtime Package: linux-intel-iotg Package: linux-intel-iotg-5.15 Package: linux-iot Package: linux-kvm Package: linux-lowlatency Package: linux-lowlatency-hwe-5.15 Package: linux-lowlatency-hwe-5.19 Package: linux-lowlatency-hwe-6.2 Package: linux-lowlatency-hwe-6.5 Package: linux-lowlatency-hwe-6.8 Package: linux-lts-xenial Package: linux-nvidia Package: linux-nvidia-6.2 Package: linux-nvidia-6.5 Package: linux-nvidia-6.8 Package: linux-nvidia-lowlatency Package: linux-nvidia-tegra Package: linux-nvidia-tegra-5.15 Package: linux-nvidia-tegra-igx Package: linux-oem Package: linux-oem-5.10 Package: linux-oem-5.13 Package: linux-oem-5.14 Package: linux-oem-5.17 Package: linux-oem-5.6 Package: linux-oem-6.0 Package: linux-oem-6.1 Package: linux-oem-6.5 Package: linux-oem-6.8 Package: linux-oracle Package: linux-oracle-5.0 Package: linux-oracle-5.11 Package: linux-oracle-5.13 Package: linux-oracle-5.15 Package: linux-oracle-5.3 Package: linux-oracle-5.4 Package: linux-oracle-5.8 Package: linux-oracle-6.5 Package: linux-oracle-6.8 Package: linux-raspi Package: linux-raspi-5.4 Package: linux-raspi-realtime Package: linux-raspi2 Package: linux-realtime Package: linux-realtime-6.8 Package: linux-riscv Package: linux-riscv-5.11 Package: linux-riscv-5.15 Package: linux-riscv-5.19 Package: linux-riscv-5.8 Package: linux-riscv-6.5 Package: linux-riscv-6.8 Package: linux-starfive-5.19 Package: linux-starfive-6.2 Package: linux-starfive-6.5 Package: linux-vmware Package: linux-xilinx-zynqmp Platform: Linux Ecosystem: Debian Ecosystem: Ubuntu

Description

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

serial: max3100: Update uart_driver_registered on driver removal

The removal of the last MAX3100 device triggers the removal of
the driver. However, code doesn't update the respective global
variable and after insmod — rmmod — insmod cycle the kernel
oopses:

max3100 spi-PRP0001:01: max3100_probe: adding port 0
BUG: kernel NULL pointer dereference, address: 0000000000000408
...
RIP: 0010:serial_core_register_port+0xa0/0x840
...
max3100_probe+0x1b6/0x280 [max3100]
spi_probe+0x8d/0xb0

Update the actual state so next time UART driver will be registered
again.

Hugo also noticed, that the error path in the probe also affected
by having the variable set, and not cleared. Instead of clearing it
move the assignment after the successfull uart_register_driver() call.

Affected products

VendorProductAffectedFixed
Linux Linux 2.6.30 4.19.316

Fixed in Linux distributions

Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.

ReleasePackageFixed inAdvisory
Debian 14 linux 6.9.7-1 —
Debian 13 linux 6.9.7-1 —
Debian 12 linux 6.1.94-1 —
Debian 11 linux 5.10.221-1 DSA-5730-1
Debian 10 linux 4.19.316-1 DLA-3840-1
ReleasePackageFixed inAdvisory
Ubuntu Nvidia-BlueField 22.04 LTS linux-bluefield 5.15.0-1052.54 —
Ubuntu 24.04 LTS linux 6.8.0-44.44 USN-6999-1
Ubuntu 24.04 LTS linux-aws 6.8.0-1015.16 USN-6999-1
Ubuntu 24.04 LTS linux-gcp +1 6.8.0-1014.16 USN-7004-1, USN-6999-1
Ubuntu 24.04 LTS linux-gke 6.8.0-1010.13 USN-6999-1
Ubuntu 24.04 LTS linux-ibm +2 6.8.0-1012.12 USN-6999-1
Ubuntu 24.04 LTS linux-nvidia 6.8.0-1013.14 USN-7005-1
Ubuntu 24.04 LTS linux-nvidia-lowlatency 6.8.0-1013.14.1 USN-7005-1
Ubuntu 24.04 LTS linux-raspi 6.8.0-1011.12 USN-6999-2
Ubuntu 24.04 LTS linux-riscv +1 6.8.0-44.44.1 USN-6999-1
Ubuntu 22.04 LTS linux +1 5.15.0-121.131 USN-7007-3, USN-7007-1
Ubuntu 22.04 LTS linux-aws 5.15.0-1069.75 USN-7007-1
Ubuntu 22.04 LTS linux-aws-6.8 6.8.0-1015.16~22.04.1 —
Ubuntu 22.04 LTS linux-azure 5.15.0-1072.81 USN-7009-1
Ubuntu 22.04 LTS linux-azure-fde 5.15.0-1072.81.1 USN-7009-1
Ubuntu 22.04 LTS linux-gcp 5.15.0-1068.76 USN-7007-1
Ubuntu 22.04 LTS linux-gcp-6.8 +1 6.8.0-1014.16~22.04.1 —
Ubuntu 22.04 LTS linux-gke 5.15.0-1066.72 USN-7007-1
Ubuntu 22.04 LTS linux-gkeop 5.15.0-1052.59 USN-7007-1
Ubuntu 22.04 LTS linux-hwe-6.8 6.8.0-45.45~22.04.1 USN-7029-1
Ubuntu 22.04 LTS linux-ibm +1 5.15.0-1062.65 USN-7007-1
Ubuntu 22.04 LTS linux-ibm-6.8 +1 6.8.0-1012.12~22.04.1 —
Ubuntu 22.04 LTS linux-intel-iotg 5.15.0-1064.70 USN-7007-1
Ubuntu 22.04 LTS linux-kvm 5.15.0-1066.71 USN-7007-1
Ubuntu 22.04 LTS linux-nvidia 5.15.0-1064.65 USN-7007-1
Ubuntu 22.04 LTS linux-nvidia-6.8 6.8.0-1013.14~22.04.1 USN-7005-2
Ubuntu 22.04 LTS linux-nvidia-tegra 5.15.0-1028.28 —
Ubuntu 22.04 LTS linux-nvidia-tegra-igx 5.15.0-1016.16 —
Ubuntu 22.04 LTS linux-oracle 5.15.0-1067.73 USN-7007-1
Ubuntu 22.04 LTS linux-riscv +31 No fix yet —
Ubuntu 22.04 LTS linux-riscv-6.8 +1 6.8.0-44.44.1~22.04.1 USN-7008-1
Ubuntu 22.04 LTS linux-xilinx-zynqmp 5.15.0-1035.39 USN-7019-1
Ubuntu 20.04 LTS linux 5.4.0-192.212 USN-6951-1
Ubuntu 20.04 LTS linux-aws 5.4.0-1130.140 USN-6951-1
Ubuntu 20.04 LTS linux-aws-5.15 5.15.0-1069.75~20.04.1 USN-7007-1
Ubuntu 20.04 LTS linux-azure 5.4.0-1135.142 USN-6951-2
Ubuntu 20.04 LTS linux-azure-5.15 5.15.0-1072.81~20.04.1 USN-7009-1
Ubuntu 20.04 LTS linux-azure-fde-5.15 5.15.0-1072.81~20.04.1.1 USN-7009-2
Ubuntu 20.04 LTS linux-bluefield 5.4.0-1090.97 USN-6951-4
Ubuntu 20.04 LTS linux-gcp 5.4.0-1134.143 USN-6951-1
Ubuntu 20.04 LTS linux-gcp-5.15 5.15.0-1068.76~20.04.1 USN-7007-1
Ubuntu 20.04 LTS linux-gke +26 No fix yet —
Ubuntu 20.04 LTS linux-gkeop 5.4.0-1097.101 USN-6951-1
Ubuntu 20.04 LTS linux-gkeop-5.15 5.15.0-1052.59~20.04.1 USN-7007-1
Ubuntu 20.04 LTS linux-hwe-5.15 +1 5.15.0-121.131~20.04.1 USN-7007-3, USN-7007-1
Ubuntu 20.04 LTS linux-ibm 5.4.0-1077.82 USN-6951-1
Ubuntu 20.04 LTS linux-ibm-5.15 5.15.0-1062.65~20.04.1 USN-7007-2
Ubuntu 20.04 LTS linux-intel-iotg-5.15 5.15.0-1064.70~20.04.1 USN-7007-1
Ubuntu 20.04 LTS linux-iot 5.4.0-1042.43 USN-6951-1
Ubuntu 20.04 LTS linux-kvm 5.4.0-1118.125 USN-6951-1
Ubuntu 20.04 LTS linux-nvidia-tegra-5.15 5.15.0-1030.30~20.04.1 —
Ubuntu 20.04 LTS linux-oracle 5.4.0-1129.138 USN-6953-1
Ubuntu 20.04 LTS linux-oracle-5.15 5.15.0-1067.73~20.04.1 USN-7007-2
Ubuntu 20.04 LTS linux-raspi 5.4.0-1114.126 USN-6951-1
Ubuntu 20.04 LTS linux-riscv-5.15 5.15.0-1065.69~20.04.1 —
Ubuntu 20.04 LTS linux-xilinx-zynqmp 5.4.0-1049.53 USN-6951-1
Ubuntu 18.04 LTS linux-gcp +14 No fix yet —
Show 15 more (older releases, extended support, other products)
ReleasePackageFixed inAdvisory
Ubuntu 16.04 LTS linux-hwe-edge No fix yet —
Ubuntu Pro Realtime 24.04 LTS linux-raspi-realtime 6.8.0-2010.10 —
Ubuntu Pro Realtime 24.04 LTS linux-realtime 6.8.1-1008.8 —
Ubuntu Pro Realtime 22.04 LTS linux-intel-iot-realtime 5.15.0-1063.65 —
Ubuntu Pro Realtime 22.04 LTS linux-realtime 5.15.0-1070.78 —
Ubuntu Pro Realtime 22.04 LTS linux-realtime-6.8 6.8.1-1008.8~22.04.1 —
Ubuntu Pro FIPS 20.04 LTS linux-fips +3 No fix yet —
Ubuntu Pro FIPS 18.04 LTS linux-fips +3 No fix yet —
Ubuntu Pro FIPS 16.04 LTS linux-fips No fix yet —
Ubuntu Pro FIPS-updates 24.04 LTS linux-fips 6.8.0-78.78+fips1 —
Ubuntu Pro FIPS-updates 22.04 LTS linux-aws-fips 5.15.0-1069.75+fips1 —
Ubuntu Pro FIPS-updates 22.04 LTS linux-azure-fips 5.15.0-1072.81+fips1 —
Ubuntu Pro FIPS-updates 22.04 LTS linux-fips 5.15.0-121.131+fips1 —
Ubuntu Pro FIPS-updates 22.04 LTS linux-gcp-fips 5.15.0-1068.76+fips1 —
Ubuntu Pro FIPS-updates 20.04 LTS linux-aws-fips 5.4.0-1130.140+fips1 —
Ubuntu Pro FIPS-updates 20.04 LTS linux-azure-fips 5.4.0-1135.142+fips1 —
Ubuntu Pro FIPS-updates 20.04 LTS linux-fips 5.4.0-1104.114 —
Ubuntu Pro FIPS-updates 20.04 LTS linux-gcp-fips 5.4.0-1134.143+fips1 —
Ubuntu Pro FIPS-updates 18.04 LTS linux-aws-fips 4.15.0-2114.120 —
Ubuntu Pro FIPS-updates 18.04 LTS linux-azure-fips 4.15.0-2093.99 —
Ubuntu Pro FIPS-updates 18.04 LTS linux-fips 4.15.0-1130.141 —
Ubuntu Pro FIPS-updates 18.04 LTS linux-gcp-fips 4.15.0-2077.83 —
Ubuntu Pro FIPS-updates 16.04 LTS linux-fips 4.4.0-1108.115 —
Ubuntu Pro FIPS-preview 22.04 LTS linux-fips +3 No fix yet —
Ubuntu Pro 18.04 LTS linux 4.15.0-232.244 USN-7185-1
Ubuntu Pro 18.04 LTS linux-aws 4.15.0-1176.189 USN-7185-1
Ubuntu Pro 18.04 LTS linux-aws-5.4 5.4.0-1130.140~18.04.1 USN-6951-1
Ubuntu Pro 18.04 LTS linux-azure-4.15 4.15.0-1184.199 USN-7185-2
Ubuntu Pro 18.04 LTS linux-azure-5.4 5.4.0-1135.142~18.04.1 USN-6951-3
Ubuntu Pro 18.04 LTS linux-gcp-4.15 4.15.0-1169.186 USN-7185-1
Ubuntu Pro 18.04 LTS linux-gcp-5.4 5.4.0-1134.143~18.04.1 USN-6951-1
Ubuntu Pro 18.04 LTS linux-hwe-5.4 5.4.0-192.212~18.04.1 USN-6951-1
Ubuntu Pro 18.04 LTS linux-ibm-5.4 5.4.0-1077.82~18.04.1 USN-6951-1
Ubuntu Pro 18.04 LTS linux-kvm 4.15.0-1159.164 USN-7185-1
Ubuntu Pro 18.04 LTS linux-oracle 4.15.0-1138.149 USN-7185-1
Ubuntu Pro 18.04 LTS linux-oracle-5.4 5.4.0-1129.138~18.04.1 USN-6953-1
Ubuntu Pro 18.04 LTS linux-raspi-5.4 5.4.0-1114.126~18.04.1 USN-6979-1
Ubuntu Pro 16.04 LTS linux 4.4.0-262.296 USN-7183-1
Ubuntu Pro 16.04 LTS linux-aws 4.4.0-1177.192 USN-7184-1
Ubuntu Pro 16.04 LTS linux-aws-hwe 4.15.0-1176.189~16.04.1 USN-7185-1
Ubuntu Pro 16.04 LTS linux-azure 4.15.0-1184.199~16.04.1 USN-7185-2
Ubuntu Pro 16.04 LTS linux-gcp 4.15.0-1169.186~16.04.1 USN-7185-1
Ubuntu Pro 16.04 LTS linux-hwe 4.15.0-232.244~16.04.1 USN-7185-1
Ubuntu Pro 16.04 LTS linux-kvm 4.4.0-1140.151 USN-7184-1
Ubuntu Pro 16.04 LTS linux-oracle 4.15.0-1138.149~16.04.1 USN-7185-1
Ubuntu Pro 14.04 LTS linux No fix yet —
Ubuntu Pro 14.04 LTS linux-aws 4.4.0-1139.145 USN-7184-1
Ubuntu Pro 14.04 LTS linux-azure 4.15.0-1184.199~14.04.1 USN-7185-2
Ubuntu Pro 14.04 LTS linux-lts-xenial 4.4.0-262.296~14.04.1 USN-7183-1
ReleasePackageFixed inAdvisory
SLES 15 SP6 kernel-64kb 6.4.0-150600.23.14.1 SUSE-SU-2024:2571-1
SLES 15 SP6 kernel-azure +1 6.4.0-150600.8.8.2 SUSE-SU-2024:2896-1
SLES 15 SP6 kernel-default-base 6.4.0-150600.23.14.2.150600.12.4.3 SUSE-SU-2024:2571-1
SLES 15 SP6 kernel-docs +5 6.4.0-150600.23.14.2 SUSE-SU-2024:2571-1
SLES 15 SP6 kernel-syms-azure 6.4.0-150600.8.8.1 SUSE-SU-2024:2896-1
SLES 15 SP5 kernel-64kb +5 5.14.21-150500.55.73.1 SUSE-SU-2024:2939-1
SLES 15 SP5 kernel-azure +2 5.14.21-150500.33.60.1 SUSE-SU-2024:2372-1
SLES 15 SP5 kernel-default-base 5.14.21-150500.55.73.1.150500.6.33.8 SUSE-SU-2024:2939-1
SLES 15 SP5 kernel-docs 5.14.21-150500.55.73.2 SUSE-SU-2024:2939-1
Show 6 more (older releases, extended support, other products)
ReleasePackageFixed inAdvisory
SLE Micro 6.0 kernel-default-base 6.4.0-17.1.1.51 SUSE-SU-2025:20008-1
SLE Micro 6.0 kernel-rt +1 6.4.0-9.1 SUSE-SU-2025:20028-1
SLE Micro 6.0 kernel-source +2 6.4.0-18.1 SUSE-SU-2025:20008-1
SLE Micro 5.5 kernel-default 5.14.21-150500.55.73.1 SUSE-SU-2024:2939-1
SLE Micro 5.5 kernel-default-base 5.14.21-150500.55.73.1.150500.6.33.8 SUSE-SU-2024:2939-1
SLE Micro 5.5 kernel-rt +1 5.14.21-150500.13.61.1 SUSE-SU-2024:2394-1
SLE Live Patching 15 SP6 kernel-default 6.4.0-150600.23.14.2 SUSE-SU-2024:2571-1
SLE Live Patching 15 SP6 kernel-livepatch-SLE15-SP6-RT_Update_1 1-150600.1.5.1 SUSE-SU-2024:2973-1
SLE Live Patching 15 SP6 kernel-livepatch-SLE15-SP6_Update_2 1-150600.13.3.2 SUSE-SU-2024:2571-1
SLE Live Patching 15 SP5 kernel-default 5.14.21-150500.55.73.1 SUSE-SU-2024:2939-1
SLE Live Patching 15 SP5 kernel-livepatch-SLE15-SP5_Update_17 +1 1-150500.11.3.1 SUSE-SU-2024:2939-1, SUSE-SU-2024:2394-1
SUSE Real Time Module 15 SP6 kernel-rt +3 6.4.0-150600.10.5.1 SUSE-SU-2024:2973-1
SUSE Real Time Module 15 SP5 kernel-rt +3 5.14.21-150500.13.61.1 SUSE-SU-2024:2394-1
ReleasePackageFixed inAdvisory
openSUSE Leap 15.6 dtb-aarch64 +1 6.4.0-150600.23.14.1 SUSE-SU-2024:2571-1
openSUSE Leap 15.6 kernel-azure +1 6.4.0-150600.8.8.2 SUSE-SU-2024:2896-1
openSUSE Leap 15.6 kernel-default-base 6.4.0-150600.23.14.2.150600.12.4.3 SUSE-SU-2024:2571-1
openSUSE Leap 15.6 kernel-docs +8 6.4.0-150600.23.14.2 SUSE-SU-2024:2571-1
openSUSE Leap 15.6 kernel-rt +3 6.4.0-150600.10.5.1 SUSE-SU-2024:2973-1
openSUSE Leap 15.6 kernel-syms-azure 6.4.0-150600.8.8.1 SUSE-SU-2024:2896-1
openSUSE Leap 15.5 dtb-aarch64 +9 5.14.21-150500.55.73.1 SUSE-SU-2024:2939-1
openSUSE Leap 15.5 kernel-azure +2 5.14.21-150500.33.60.1 SUSE-SU-2024:2372-1
openSUSE Leap 15.5 kernel-default-base 5.14.21-150500.55.73.1.150500.6.33.8 SUSE-SU-2024:2939-1
openSUSE Leap 15.5 kernel-docs 5.14.21-150500.55.73.2 SUSE-SU-2024:2939-1
openSUSE Leap 15.5 kernel-rt +3 5.14.21-150500.13.61.1 SUSE-SU-2024:2394-1
Show 1 more (older releases, extended support, other products)
ReleasePackageFixed inAdvisory
openSUSE Leap Micro 5.5 kernel-default 5.14.21-150500.55.73.1 SUSE-SU-2024:2939-1
openSUSE Leap Micro 5.5 kernel-default-base 5.14.21-150500.55.73.1.150500.6.33.8 SUSE-SU-2024:2939-1

Oracle Linux

ReleasePackageFixed inAdvisory
Oracle Linux 8 kernel-uek-container +1 5.4.17-2136.334.6.el8 ELSA-2024-12584
Oracle Linux 7 kernel-uek-container +1 5.4.17-2136.334.6.el7 ELSA-2024-12585
Oracle Linux 7 perf +10 4.14.35-2047.540.4.1.el7uek ELSA-2024-12611, ELSA-2024-12581

Advisories 40

References