CVE-2025-22079 — ocfs2: validate l_tree_depth to avoid out-of-bounds access

Affected: Linux

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

ocfs2: validate l_tree_depth to avoid out-of-bounds access

The l_tree_depth field is 16-bit (__le16), but the actual maximum depth is limited to OCFS2_MAX_PATH_DEPTH.

Add a check to prevent out-of-bounds access if l_tree_depth has an invalid value, which may occur when reading from a corrupted mounted disk [1].

USN-7585-1 — linux, linux-aws, linux-aws-5.4, linux-azure, linux-gcp, linux-gcp-5.4, linux-ibm, linux-ibm-5.4, linux-kvm, linux-orac…

Affected: Ubuntu:Pro:18.04:LTS: linux-aws-5.4, Ubuntu:Pro:18.04:LTS: linux-gcp-5.4, Ubuntu:Pro:18.04:LTS: linux-ibm-5.4, Ubuntu:Pro:18.04:LTS: linux-oracle-5.4, Ubuntu:Pro:20.04:LTS: linux, Ubuntu:Pro:20.04:LTS: linux-aws, Ubuntu:Pro:20.04:LTS: linux-azure, Ubuntu:Pro:20.04:LTS: linux-gcp, Ubuntu:Pro:20.04:LTS: linux-ibm, Ubuntu:Pro:20.04:LTS: linux-kvm and 2 more

It was discovered that the CIFS network file system implementation in the Linux kernel did not properly verify the target namespace when handling upcalls. An attacker could use this to expose sensitive information. (CVE-2025-2312)

Several security issues were discovered in the Linux kernel. An attacker could possibly use these to compromise the system. This update corrects flaws in the following subsystems: - PowerPC architecture; - x86 architecture; - iSCSI Boot Firmware Table Attributes driver; - GPU drivers; - HID subsystem; - InfiniBand drivers; - Media drivers; - MemoryStick subsystem; - Network drivers; - NTB driver; - PCI subsystem; - SCSI subsystem; - Thermal drivers; - JFS file system; - File systems infrastructure; - Tracing infrastructure; - 802.1Q VLAN protocol; - Asynchronous Transfer Mode (ATM) subsystem; - Bluetooth subsystem; - IPv6 networking; - Netfilter; - Network traffic control; - Sun RPC protocol; - USB sound devices; (CVE-2025-22007, CVE-2025-21959, CVE-2025-22021, CVE-2025-22063, CVE-2025-22045, CVE-2024-58093, CVE-2022-49636, CVE-2025-22020, CVE-2024-53168, CVE-2025-22071, CVE-2025-39735, CVE-2025-21991, CVE-2025-21992, CVE-2025-21996, CVE-2025-22035, CVE-2023-53034, CVE-2025-22054, CVE-2025-23136, CVE-2025-22073, CVE-2024-56551, CVE-2025-22005, CVE-2025-37937, CVE-2021-47211, CVE-2025-22086, CVE-2025-21956, CVE-2025-38637, CVE-2025-22004, CVE-2025-22018, CVE-2025-22079, CVE-2025-21957, CVE-2025-21993)

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CVE-2025-22079 — ocfs2: validate l_tree_depth to avoid out-of-bounds access

USN-7585-1 — linux, linux-aws, linux-aws-5.4, linux-azure, linux-gcp, linux-gcp-5.4, linux-ibm, linux-ibm-5.4, linux-kvm, linux-orac…