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CVE-2022-3910

Status Candidate

Overview

Use After Free vulnerability in Linux Kernel allows Privilege Escalation. An improper Update of Reference Count in io_uring leads to Use-After-Free and Local Privilege Escalation. When io_msg_ring was invoked with a fixed file, it called io_fput_file() which improperly decreased its reference count (leading to Use-After-Free and Local Privilege Escalation). Fixed files are permanently registered to the ring, and should not be put separately. We recommend upgrading past commit https://github.com/torvalds/linux/commit/fc7222c3a9f56271fba02aabbfbae999042f1679 https://github.com/torvalds/linux/commit/fc7222c3a9f56271fba02aabbfbae999042f1679

Related Files

Ubuntu Security Notice USN-5793-3
Posted Jan 11, 2023
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 5793-3 - It was discovered that the io_uring subsystem in the Linux kernel did not properly perform reference counting in some situations, leading to a use- after-free vulnerability. A local attacker could use this to cause a denial of service or possibly execute arbitrary code. It was discovered that a race condition existed in the Android Binder IPC subsystem in the Linux kernel, leading to a use-after-free vulnerability. A local attacker could use this to cause a denial of service or possibly execute arbitrary code.

tags | advisory, denial of service, arbitrary, kernel, local
systems | linux, ubuntu
advisories | CVE-2022-20421, CVE-2022-2663, CVE-2022-3303, CVE-2022-3541, CVE-2022-3543, CVE-2022-3586, CVE-2022-3623, CVE-2022-3646, CVE-2022-3649, CVE-2022-3910, CVE-2022-3977, CVE-2022-40307, CVE-2022-4095, CVE-2022-41849
SHA-256 | de87ce493d82fd0359247a8cad970c787d81d4e8273265a324e13a768ef64e55
Ubuntu Security Notice USN-5793-4
Posted Jan 11, 2023
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 5793-4 - It was discovered that the io_uring subsystem in the Linux kernel did not properly perform reference counting in some situations, leading to a use- after-free vulnerability. A local attacker could use this to cause a denial of service or possibly execute arbitrary code. It was discovered that a race condition existed in the Android Binder IPC subsystem in the Linux kernel, leading to a use-after-free vulnerability. A local attacker could use this to cause a denial of service or possibly execute arbitrary code.

tags | advisory, denial of service, arbitrary, kernel, local
systems | linux, ubuntu
advisories | CVE-2022-20421, CVE-2022-2663, CVE-2022-3303, CVE-2022-3541, CVE-2022-3543, CVE-2022-3586, CVE-2022-3623, CVE-2022-3646, CVE-2022-3649, CVE-2022-3910, CVE-2022-3977, CVE-2022-40307, CVE-2022-4095, CVE-2022-41849
SHA-256 | 2c32e72ace00f2afbe7c74ffcd43d9f0c6bdd99ce3882f8881790ea8ad77c31c
Ubuntu Security Notice USN-5793-2
Posted Jan 10, 2023
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 5793-2 - It was discovered that the io_uring subsystem in the Linux kernel did not properly perform reference counting in some situations, leading to a use- after-free vulnerability. A local attacker could use this to cause a denial of service or possibly execute arbitrary code. It was discovered that a race condition existed in the Android Binder IPC subsystem in the Linux kernel, leading to a use-after-free vulnerability. A local attacker could use this to cause a denial of service or possibly execute arbitrary code.

tags | advisory, denial of service, arbitrary, kernel, local
systems | linux, ubuntu
advisories | CVE-2022-20421, CVE-2022-2663, CVE-2022-3303, CVE-2022-3541, CVE-2022-3543, CVE-2022-3586, CVE-2022-3623, CVE-2022-3646, CVE-2022-3649, CVE-2022-3910, CVE-2022-3977, CVE-2022-40307, CVE-2022-4095, CVE-2022-41849
SHA-256 | d675040336f5a36e7ca116ff8ee729cb2ab25769ff6dae5749e51445e04f8c2c
Ubuntu Security Notice USN-5793-1
Posted Jan 9, 2023
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 5793-1 - It was discovered that the io_uring subsystem in the Linux kernel did not properly perform reference counting in some situations, leading to a use- after-free vulnerability. A local attacker could use this to cause a denial of service or possibly execute arbitrary code. It was discovered that a race condition existed in the Android Binder IPC subsystem in the Linux kernel, leading to a use-after-free vulnerability. A local attacker could use this to cause a denial of service or possibly execute arbitrary code.

tags | advisory, denial of service, arbitrary, kernel, local
systems | linux, ubuntu
advisories | CVE-2022-20421, CVE-2022-2663, CVE-2022-3303, CVE-2022-3541, CVE-2022-3543, CVE-2022-3586, CVE-2022-3623, CVE-2022-3646, CVE-2022-3649, CVE-2022-3910, CVE-2022-3977, CVE-2022-40307, CVE-2022-4095, CVE-2022-41849
SHA-256 | 91ba98c3c9637a1d31736093e5bfd37579c41aaa5e5abbbbc4396e2e20bfe7e1
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