High [CVE-2023-1989] Kernel: use after free bug in btsdio_remove due to race condition
This high-severity Red Hat Linux advisory covers CVE-2023-1989 affecting Red Hat Enterprise Linux 8.6 Extended Update Support, Red Hat Enterprise Linux 8.8 Extended Update Support, Red Hat Enterprise Linux 9.
Aggregated and source-linked by VulniPulse. Data sources, validation and limitations.
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Summary
A use-after-free flaw was found in btsdio_remove in drivers\bluetooth\btsdio.c in the Linux Kernel. In this flaw, a call to btsdio_remove with an unfinished job, may cause a race problem leading to a UAF on hdev devices.
Because successful exploitation of this flaw requires that a system supports SDIO hardware and that an attacker has control over attaching and detaching that hardware, Red Hat assesses the impact of this vulnerability as Moderate. Red Hat severity: Moderate — CVSS 7 (CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H).
Weakness: CWE-416. Affected Red Hat products: Red Hat Enterprise Linux 8; Red Hat Enterprise Linux 8.6 Extended Update Support; Red Hat Enterprise Linux 8.8 Extended Update Support; Red Hat Enterprise Linux 9; Red Hat Virtualization 4 for Red Hat Enterprise Linux 8; Red Hat Enterprise Linux 6; Red Hat Enterprise Linux 7.
Will not fix / out of support: Red Hat Enterprise Linux 6; Red Hat Enterprise Linux 7. Red Hat fixing advisory: RHSA-2023:6901, RHSA-2023:7077, RHSA-2024:0724, RHSA-2024:4740, RHSA-2023:6583.
Affected products named by the advisory: Red Hat package: kernel-rt.
Affected versions
No affected-version range was extracted from the source record. The vendor advisory is authoritative — check it before change work.
Official advisory · high-confidence parse· fetched 12 days ago·verify at source
- kernel-rt-0:4.18.0-513.5.1.rt7.307.el8_9
- kernel-0:4.18.0-513.5.1.el8_9
- kernel-0:4.18.0-372.91.1.el8_6
- kernel-0:4.18.0-477.64.1.el8_8
- kernel-0:5.14.0-362.8.1.el9_3
- RHSA-2023:6901
- RHSA-2023:7077
- RHSA-2024:0724
- RHSA-2024:4740
- RHSA-2023:6583
Official advisory · high-confidence parse· fetched 12 days ago·verify at source
Mitigation checklist
- This flaw can be mitigated by preventing the affected Generic Bluetooth SDIO driver kernel module from loading during the boot time. Ensure the module is added into the blacklist file. ~~~ Refer: How do I blacklist a kernel module to prevent it from loading automatically? https://access.redhat.com/solutions/41278 ~~~
Official advisory · high-confidence parse· fetched 12 days ago·verify at source
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