# CVE-2025-38262: tty: serial: uartlite: register uart driver in init CVE-2025-38262 is fixed in 66 products on 1 platform, first by DEBIAN-CVE-2025-38262, released July 9, 2025. It is not reported as exploited. Patch Radar priority: Routine. - Web page: https://patchblox.com/security/cve/CVE-2025-38262 - Priority: Routine - CVSS: 5.5 (medium) - EPSS: 0.0019 - CISA KEV: not listed - Exploited (vendor report): no - Publicly disclosed: no - Published: Jul 9, 2025 - Vendor advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-38262 ## Description In the Linux kernel, the following vulnerability has been resolved: tty: serial: uartlite: register uart driver in init When two instances of uart devices are probing, a concurrency race can occur. If one thread calls uart_register_driver function, which first allocates and assigns memory to 'uart_state' member of uart_driver structure, the other instance can bypass uart driver registration and call ulite_assign. This calls uart_add_one_port, which expects the uart driver to be fully initialized. This leads to a kernel panic due to a null pointer dereference: [ 8.143581] BUG: kernel NULL pointer dereference, address: 00000000000002b8 [ 8.156982] #PF: supervisor write access in kernel mode [ 8.156984] #PF: error_code(0x0002) - not-present page [ 8.156986] PGD 0 P4D 0 ... [ 8.180668] RIP: 0010:mutex_lock+0x19/0x30 [ 8.188624] Call Trace: [ 8.188629] ? __die_body.cold+0x1a/0x1f [ 8.195260] ? page_fault_oops+0x15c/0x290 [ 8.209183] ? __irq_resolve_mapping+0x47/0x80 [ 8.209187] ? exc_page_fault+0x64/0x140 [ 8.209190] ? asm_exc_page_fault+0x22/0x30 [ 8.209196] ? mutex_lock+0x19/0x30 [ 8.223116] uart_add_one_port+0x60/0x440 [ 8.223122] ? proc_tty_register_driver+0x43/0x50 [ 8.223126] ? tty_register_driver+0x1ca/0x1e0 [ 8.246250] ulite_probe+0x357/0x4b0 [uartlite] To prevent it, move uart driver registration in to init function. This will ensure that uart_driver is always registered when probe function is called. ## Where it's fixed | Platform | Product | Fixed in | Fix | Released | |---|---|---|---|---| | Linux | bpftool amzn 2023 | 1:6.1.144-170.251.amzn2023 | [ALAS2023-2025-1111](https://patchblox.com/security/data/fix/linux/alas2023-2025-1111.md) | Jul 21, 2025 | | Linux | bpftool-debuginfo amzn 2023 | 1:6.1.144-170.251.amzn2023 | [ALAS2023-2025-1111](https://patchblox.com/security/data/fix/linux/alas2023-2025-1111.md) | Jul 21, 2025 | | Linux | bpftool6.12 amzn 2023 | 1:6.12.37-61.105.amzn2023 | [ALAS2023-2025-1130](https://patchblox.com/security/data/fix/linux/alas2023-2025-1130.md) | Jul 29, 2025 | | Linux | bpftool6.12-debuginfo amzn 2023 | 1:6.12.37-61.105.amzn2023 | [ALAS2023-2025-1130](https://patchblox.com/security/data/fix/linux/alas2023-2025-1130.md) | Jul 29, 2025 | | Linux | dtb-aarch64 opensuse-leap 16.0 | 6.12.0-160000.26.1 | [OPENSUSE-SU-2026:20287-1](https://patchblox.com/security/data/fix/linux/opensuse-su-2026-20287-1.md) | Feb 27, 2026 | | Linux | kernel amzn 2023 | 1:6.1.144-170.251.amzn2023 | [ALAS2023-2025-1111](https://patchblox.com/security/data/fix/linux/alas2023-2025-1111.md) | Jul 21, 2025 | | Linux | kernel-64kb opensuse-leap 16.0 | 6.12.0-160000.26.1 | [OPENSUSE-SU-2026:20287-1](https://patchblox.com/security/data/fix/linux/opensuse-su-2026-20287-1.md) | Feb 27, 2026 | | Linux | kernel-64kb sles 16.0 | 6.12.0-160000.26.1 | [SUSE-SU-2026:20599-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-20599-1.md) | Feb 27, 2026 | | Linux | kernel-azure opensuse-leap 16.0 | 6.12.0-160000.26.1 | [OPENSUSE-SU-2026:20287-1](https://patchblox.com/security/data/fix/linux/opensuse-su-2026-20287-1.md) | Feb 27, 2026 | | Linux | kernel-azure sles 16.0 | 6.12.0-160000.26.1 | [SUSE-SU-2026:20599-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-20599-1.md) | Feb 27, 2026 | | Linux | kernel-debuginfo amzn 2023 | 1:6.1.144-170.251.amzn2023 | [ALAS2023-2025-1111](https://patchblox.com/security/data/fix/linux/alas2023-2025-1111.md) | Jul 21, 2025 | | Linux | kernel-debuginfo-common-aarch64 amzn 2023 | 1:6.1.144-170.251.amzn2023 | [ALAS2023-2025-1111](https://patchblox.com/security/data/fix/linux/alas2023-2025-1111.md) | Jul 21, 2025 | | Linux | kernel-debuginfo-common-x86_64 amzn 2023 | 1:6.1.144-170.251.amzn2023 | [ALAS2023-2025-1111](https://patchblox.com/security/data/fix/linux/alas2023-2025-1111.md) | Jul 21, 2025 | | Linux | kernel-default opensuse-leap 16.0 | 6.12.0-160000.26.1 | [OPENSUSE-SU-2026:20287-1](https://patchblox.com/security/data/fix/linux/opensuse-su-2026-20287-1.md) | Feb 27, 2026 | | Linux | kernel-default sles 16.0 | 6.12.0-160000.26.1 | [SUSE-SU-2026:20599-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-20599-1.md) | Feb 27, 2026 | | Linux | kernel-default-base opensuse-leap 16.0 | 6.12.0-160000.26.1.160000.2.7 | [OPENSUSE-SU-2026:20287-1](https://patchblox.com/security/data/fix/linux/opensuse-su-2026-20287-1.md) | Feb 27, 2026 | | Linux | kernel-default-base sles 16.0 | 6.12.0-160000.26.1.160000.2.7 | [SUSE-SU-2026:20599-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-20599-1.md) | Feb 27, 2026 | | Linux | kernel-devel amzn 2023 | 1:6.1.144-170.251.amzn2023 | [ALAS2023-2025-1111](https://patchblox.com/security/data/fix/linux/alas2023-2025-1111.md) | Jul 21, 2025 | | Linux | kernel-docs opensuse-leap 16.0 | 6.12.0-160000.26.1 | [OPENSUSE-SU-2026:20287-1](https://patchblox.com/security/data/fix/linux/opensuse-su-2026-20287-1.md) | Feb 27, 2026 | | Linux | kernel-docs sles 16.0 | 6.12.0-160000.26.1 | [SUSE-SU-2026:20599-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-20599-1.md) | Feb 27, 2026 | | Linux | kernel-headers amzn 2023 | 1:6.1.144-170.251.amzn2023 | [ALAS2023-2025-1111](https://patchblox.com/security/data/fix/linux/alas2023-2025-1111.md) | Jul 21, 2025 | | Linux | kernel-kvmsmall opensuse-leap 16.0 | 6.12.0-160000.26.1 | [OPENSUSE-SU-2026:20287-1](https://patchblox.com/security/data/fix/linux/opensuse-su-2026-20287-1.md) | Feb 27, 2026 | | Linux | kernel-kvmsmall sles 16.0 | 6.12.0-160000.26.1 | [SUSE-SU-2026:20599-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-20599-1.md) | Feb 27, 2026 | | Linux | kernel-libbpf amzn 2023 | 1:6.1.144-170.251.amzn2023 | [ALAS2023-2025-1111](https://patchblox.com/security/data/fix/linux/alas2023-2025-1111.md) | Jul 21, 2025 | | Linux | kernel-libbpf-debuginfo amzn 2023 | 1:6.1.144-170.251.amzn2023 | [ALAS2023-2025-1111](https://patchblox.com/security/data/fix/linux/alas2023-2025-1111.md) | Jul 21, 2025 | | Linux | kernel-libbpf-devel amzn 2023 | 1:6.1.144-170.251.amzn2023 | [ALAS2023-2025-1111](https://patchblox.com/security/data/fix/linux/alas2023-2025-1111.md) | Jul 21, 2025 | | Linux | kernel-libbpf-static amzn 2023 | 1:6.1.144-170.251.amzn2023 | [ALAS2023-2025-1111](https://patchblox.com/security/data/fix/linux/alas2023-2025-1111.md) | Jul 21, 2025 | | Linux | kernel-livepatch-6.1.144-170.251 amzn 2023 | 1:1.0-0.amzn2023 | [ALAS2023-2025-1111](https://patchblox.com/security/data/fix/linux/alas2023-2025-1111.md) | Jul 21, 2025 | | Linux | kernel-livepatch-6.12.37-61.105 amzn 2023 | 1:1.0-0.amzn2023 | [ALAS2023-2025-1130](https://patchblox.com/security/data/fix/linux/alas2023-2025-1130.md) | Jul 29, 2025 | | Linux | kernel-modules-extra amzn 2023 | 1:6.1.144-170.251.amzn2023 | [ALAS2023-2025-1111](https://patchblox.com/security/data/fix/linux/alas2023-2025-1111.md) | Jul 21, 2025 | | Linux | kernel-modules-extra-common amzn 2023 | 1:6.1.144-170.251.amzn2023 | [ALAS2023-2025-1111](https://patchblox.com/security/data/fix/linux/alas2023-2025-1111.md) | Jul 21, 2025 | | Linux | kernel-obs-build opensuse-leap 16.0 | 6.12.0-160000.26.1 | [OPENSUSE-SU-2026:20287-1](https://patchblox.com/security/data/fix/linux/opensuse-su-2026-20287-1.md) | Feb 27, 2026 | | Linux | kernel-obs-qa opensuse-leap 16.0 | 6.12.0-160000.26.1 | [OPENSUSE-SU-2026:20287-1](https://patchblox.com/security/data/fix/linux/opensuse-su-2026-20287-1.md) | Feb 27, 2026 | | Linux | kernel-obs-qa sles 16.0 | 6.12.0-160000.26.1 | [SUSE-SU-2026:20599-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-20599-1.md) | Feb 27, 2026 | | Linux | kernel-rt opensuse-leap 16.0 | 6.12.0-160000.26.1 | [OPENSUSE-SU-2026:20287-1](https://patchblox.com/security/data/fix/linux/opensuse-su-2026-20287-1.md) | Feb 27, 2026 | | Linux | kernel-source opensuse-leap 16.0 | 6.12.0-160000.26.1 | [OPENSUSE-SU-2026:20287-1](https://patchblox.com/security/data/fix/linux/opensuse-su-2026-20287-1.md) | Feb 27, 2026 | | Linux | kernel-source sles 16.0 | 6.12.0-160000.26.1 | [SUSE-SU-2026:20599-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-20599-1.md) | Feb 27, 2026 | | Linux | kernel-syms opensuse-leap 16.0 | 6.12.0-160000.26.1 | [OPENSUSE-SU-2026:20287-1](https://patchblox.com/security/data/fix/linux/opensuse-su-2026-20287-1.md) | Feb 27, 2026 | | Linux | kernel-syms sles 16.0 | 6.12.0-160000.26.1 | [SUSE-SU-2026:20599-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-20599-1.md) | Feb 27, 2026 | | Linux | kernel-tools amzn 2023 | 1:6.1.144-170.251.amzn2023 | [ALAS2023-2025-1111](https://patchblox.com/security/data/fix/linux/alas2023-2025-1111.md) | Jul 21, 2025 | | Linux | kernel-tools-debuginfo amzn 2023 | 1:6.1.144-170.251.amzn2023 | [ALAS2023-2025-1111](https://patchblox.com/security/data/fix/linux/alas2023-2025-1111.md) | Jul 21, 2025 | | Linux | kernel-tools-devel amzn 2023 | 1:6.1.144-170.251.amzn2023 | [ALAS2023-2025-1111](https://patchblox.com/security/data/fix/linux/alas2023-2025-1111.md) | Jul 21, 2025 | | Linux | kernel-uek ol 8 | 0:5.4.17-2136.348.3.el7uek | [ELSA-2025-20663](https://patchblox.com/security/data/fix/linux/elsa-2025-20663.md) | Oct 11, 2025 | | Linux | kernel-uek-container ol 8 | 0:5.4.17-2136.348.3.el7uek | [ELSA-2025-20663](https://patchblox.com/security/data/fix/linux/elsa-2025-20663.md) | Oct 11, 2025 | | Linux | kernel-uek-container-debug ol 8 | 0:5.4.17-2136.348.3.el7uek | [ELSA-2025-20663](https://patchblox.com/security/data/fix/linux/elsa-2025-20663.md) | Oct 11, 2025 | | Linux | kernel-uek-debug ol 8 | 0:5.4.17-2136.348.3.el7uek | [ELSA-2025-20663](https://patchblox.com/security/data/fix/linux/elsa-2025-20663.md) | Oct 11, 2025 | | Linux | kernel-uek-debug-devel ol 8 | 0:5.4.17-2136.348.3.el7uek | [ELSA-2025-20663](https://patchblox.com/security/data/fix/linux/elsa-2025-20663.md) | Oct 11, 2025 | | Linux | kernel-uek-devel ol 8 | 0:5.4.17-2136.348.3.el7uek | [ELSA-2025-20663](https://patchblox.com/security/data/fix/linux/elsa-2025-20663.md) | Oct 11, 2025 | | Linux | kernel-uek-doc ol 8 | 0:5.4.17-2136.348.3.el7uek | [ELSA-2025-20663](https://patchblox.com/security/data/fix/linux/elsa-2025-20663.md) | Oct 11, 2025 | | Linux | kernel-uek-tools ol 8 | 0:5.4.17-2136.348.3.el7uek | [ELSA-2025-20663](https://patchblox.com/security/data/fix/linux/elsa-2025-20663.md) | Oct 11, 2025 | | Linux | kernel-zfcpdump opensuse-leap 16.0 | 6.12.0-160000.26.1 | [OPENSUSE-SU-2026:20287-1](https://patchblox.com/security/data/fix/linux/opensuse-su-2026-20287-1.md) | Feb 27, 2026 | | Linux | kernel-zfcpdump sles 16.0 | 6.12.0-160000.26.1 | [SUSE-SU-2026:20599-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-20599-1.md) | Feb 27, 2026 | | Linux | kernel6.12 amzn 2023 | 1:6.12.37-61.105.amzn2023 | [ALAS2023-2025-1130](https://patchblox.com/security/data/fix/linux/alas2023-2025-1130.md) | Jul 29, 2025 | | Linux | kernel6.12-debuginfo amzn 2023 | 1:6.12.37-61.105.amzn2023 | [ALAS2023-2025-1130](https://patchblox.com/security/data/fix/linux/alas2023-2025-1130.md) | Jul 29, 2025 | | Linux | kernel6.12-debuginfo-common-aarch64 amzn 2023 | 1:6.12.37-61.105.amzn2023 | [ALAS2023-2025-1130](https://patchblox.com/security/data/fix/linux/alas2023-2025-1130.md) | Jul 29, 2025 | | Linux | kernel6.12-debuginfo-common-x86_64 amzn 2023 | 1:6.12.37-61.105.amzn2023 | [ALAS2023-2025-1130](https://patchblox.com/security/data/fix/linux/alas2023-2025-1130.md) | Jul 29, 2025 | | Linux | kernel6.12-devel amzn 2023 | 1:6.12.37-61.105.amzn2023 | [ALAS2023-2025-1130](https://patchblox.com/security/data/fix/linux/alas2023-2025-1130.md) | Jul 29, 2025 | | Linux | kernel6.12-headers amzn 2023 | 1:6.12.37-61.105.amzn2023 | [ALAS2023-2025-1130](https://patchblox.com/security/data/fix/linux/alas2023-2025-1130.md) | Jul 29, 2025 | | Linux | kernel6.12-libbpf amzn 2023 | 1:6.12.37-61.105.amzn2023 | [ALAS2023-2025-1130](https://patchblox.com/security/data/fix/linux/alas2023-2025-1130.md) | Jul 29, 2025 | | Linux | kernel6.12-libbpf-debuginfo amzn 2023 | 1:6.12.37-61.105.amzn2023 | [ALAS2023-2025-1130](https://patchblox.com/security/data/fix/linux/alas2023-2025-1130.md) | Jul 29, 2025 | | Linux | kernel6.12-libbpf-devel amzn 2023 | 1:6.12.37-61.105.amzn2023 | [ALAS2023-2025-1130](https://patchblox.com/security/data/fix/linux/alas2023-2025-1130.md) | Jul 29, 2025 | | Linux | kernel6.12-libbpf-static amzn 2023 | 1:6.12.37-61.105.amzn2023 | [ALAS2023-2025-1130](https://patchblox.com/security/data/fix/linux/alas2023-2025-1130.md) | Jul 29, 2025 | | Linux | kernel6.12-modules-extra amzn 2023 | 1:6.12.37-61.105.amzn2023 | [ALAS2023-2025-1130](https://patchblox.com/security/data/fix/linux/alas2023-2025-1130.md) | Jul 29, 2025 | | Linux | kernel6.12-modules-extra-common amzn 2023 | 1:6.12.37-61.105.amzn2023 | [ALAS2023-2025-1130](https://patchblox.com/security/data/fix/linux/alas2023-2025-1130.md) | Jul 29, 2025 | | Linux | kernel6.12-tools amzn 2023 | 1:6.12.37-61.105.amzn2023 | [ALAS2023-2025-1130](https://patchblox.com/security/data/fix/linux/alas2023-2025-1130.md) | Jul 29, 2025 | | Linux | kernel6.12-tools-debuginfo amzn 2023 | 1:6.12.37-61.105.amzn2023 | [ALAS2023-2025-1130](https://patchblox.com/security/data/fix/linux/alas2023-2025-1130.md) | Jul 29, 2025 | | Linux | kernel6.12-tools-devel amzn 2023 | 1:6.12.37-61.105.amzn2023 | [ALAS2023-2025-1130](https://patchblox.com/security/data/fix/linux/alas2023-2025-1130.md) | Jul 29, 2025 | | Linux | linux Debian 12.15 (bookworm) | 6.1.147-1 | [DEBIAN-CVE-2025-38262](https://patchblox.com/security/data/fix/linux/debian-cve-2025-38262.md) | Jul 9, 2025 | | Linux | linux Debian 13.5 (trixie) | 6.12.37-1 | [DEBIAN-CVE-2025-38262](https://patchblox.com/security/data/fix/linux/debian-cve-2025-38262.md) | Jul 9, 2025 | | Linux | linux Debian 14 | 6.12.37-1 | [DEBIAN-CVE-2025-38262](https://patchblox.com/security/data/fix/linux/debian-cve-2025-38262.md) | Jul 9, 2025 | | Linux | perf amzn 2023 | 1:6.1.144-170.251.amzn2023 | [ALAS2023-2025-1111](https://patchblox.com/security/data/fix/linux/alas2023-2025-1111.md) | Jul 21, 2025 | | Linux | perf-debuginfo amzn 2023 | 1:6.1.144-170.251.amzn2023 | [ALAS2023-2025-1111](https://patchblox.com/security/data/fix/linux/alas2023-2025-1111.md) | Jul 21, 2025 | | Linux | perf6.12 amzn 2023 | 1:6.12.37-61.105.amzn2023 | [ALAS2023-2025-1130](https://patchblox.com/security/data/fix/linux/alas2023-2025-1130.md) | Jul 29, 2025 | | Linux | perf6.12-debuginfo amzn 2023 | 1:6.12.37-61.105.amzn2023 | [ALAS2023-2025-1130](https://patchblox.com/security/data/fix/linux/alas2023-2025-1130.md) | Jul 29, 2025 | | Linux | python3-perf amzn 2023 | 1:6.1.144-170.251.amzn2023 | [ALAS2023-2025-1111](https://patchblox.com/security/data/fix/linux/alas2023-2025-1111.md) | Jul 21, 2025 | | Linux | python3-perf-debuginfo amzn 2023 | 1:6.1.144-170.251.amzn2023 | [ALAS2023-2025-1111](https://patchblox.com/security/data/fix/linux/alas2023-2025-1111.md) | Jul 21, 2025 | | Linux | python3-perf6.12 amzn 2023 | 1:6.12.37-61.105.amzn2023 | [ALAS2023-2025-1130](https://patchblox.com/security/data/fix/linux/alas2023-2025-1130.md) | Jul 29, 2025 | | Linux | python3-perf6.12-debuginfo amzn 2023 | 1:6.12.37-61.105.amzn2023 | [ALAS2023-2025-1130](https://patchblox.com/security/data/fix/linux/alas2023-2025-1130.md) | Jul 29, 2025 | --- Data as of 2026-11-08T06:59:42Z UTC. 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