CVE-2026-31598High· 7.5▾ TwilightIn the Linux kernel, the following vulnerability has been resolved: ocfs2: fix possible deadlock between unlink and dio_end_io_write ocfs2_unlink takes orphan dir inode_lock first and then ip_alloc_sem, while in ocfs2_dio_end_io_write,…
▾ Twilight zone — High severity, or a signal on a lesser flaw
impact 41.3 · likelihood 0.1 · exploitation 0
Need a working PoC? Pro members can cast a request and our team develops one — it lands right here.
Stakeholder-Specific Vulnerability Categorization from CISA's ADP record at CVE.org: whether exploitation is observed, whether an attack can be automated, and how much of the system is at stake. The CVSS score shown above comes from the assigning CNA record, not NVD.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via CVEORG
Last analysed / modified upstream
0.4%
In the Linux kernel, the following vulnerability has been resolved:
ocfs2: fix possible deadlock between unlink and dio_end_io_write
ocfs2_unlink takes orphan dir inode_lock first and then ip_alloc_sem, while in ocfs2_dio_end_io_write, it acquires these locks in reverse order. This creates an ABBA lock ordering violation on lock classes ocfs2_sysfile_lock_key[ORPHAN_DIR_SYSTEM_INODE] and ocfs2_file_ip_alloc_sem_key.
Lock Chain #0 (orphan dir inode_lock -> ip_alloc_sem): ocfs2_unlink ocfs2_prepare_orphan_dir ocfs2_lookup_lock_orphan_dir inode_lock(orphan_dir_inode) <- lock A __ocfs2_prepare_orphan_dir ocfs2_prepare_dir_for_insert ocfs2_extend_dir ocfs2_expand_inline_dir down_write(&oi->ip_alloc_sem) <- Lock B
Lock Chain #1 (ip_alloc_sem -> orphan dir inode_lock): ocfs2_dio_end_io_write down_write(&oi->ip_alloc_sem) <- Lock B ocfs2_del_inode_from_orphan() inode_lock(orphan_dir_inode) <- Lock A
Deadlock Scenario: CPU0 (unlink) CPU1 (dio_end_io_write)
inode_lock(orphan_dir_inode) down_write(ip_alloc_sem) down_write(ip_alloc_sem) inode_lock(orphan_dir_inode)
Since ip_alloc_sem is to protect allocation changes, which is unrelated with operations in ocfs2_del_inode_from_orphan. So move ocfs2_del_inode_from_orphan out of ip_alloc_sem to fix the deadlock.
Linux >= a86a72a4a4e0ec109a98e2737948864ed6794bf7 < 297d8d7bb6a2bf133d3a3636edbdf94101cbd719Linux >= a86a72a4a4e0ec109a98e2737948864ed6794bf7 < 32630dee18c6bb2175c8a865a474749492eaf19cLinux >= a86a72a4a4e0ec109a98e2737948864ed6794bf7 < 93f35419eb84d58820040642cb6e7528fe4aba7aLinux >= a86a72a4a4e0ec109a98e2737948864ed6794bf7 < 4b80b5a838a32437f2cae0662578bac216a2c51aLinux >= a86a72a4a4e0ec109a98e2737948864ed6794bf7 < 2b884d52273c60c298bd570163e8053657bbaff6Linux >= a86a72a4a4e0ec109a98e2737948864ed6794bf7 < bc0fb5c7d54c78be43a536df0e20dee32adb27d3Linux >= a86a72a4a4e0ec109a98e2737948864ed6794bf7 < f9fb1a7b635849322e1d7b7b6b26389778ec8e82Linux >= a86a72a4a4e0ec109a98e2737948864ed6794bf7 < e049f7a9bd80b7319590789ea5e1c523d6339d91Linux >= a86a72a4a4e0ec109a98e2737948864ed6794bf7 < b02da26a992db0c0e2559acbda0fc48d4a2fd337Linux 4.6Refer to the linked advisories for vendor-supplied fixes and affected version ranges.
Connected by shared product, vendor, weakness, or advisory.
CVE-2026-99999Critical· 9.3In the Linux kernel, the following vulnerability has been resolved: ipv4: validate checksum_start before completing checksum If a packet with bad checksum metadata gets into the ipv4 stack, skb_checksum_help can corrupt the network hea…
CVE-2026-98432NoneIn the Linux kernel, the following vulnerability has been resolved: ipv4: free inet_opt and ireq_opt after an RCU grace period tcp_v4_syn_recv_sock() transfers ownership of ireq->ireq_opt to the child socket (newinet->inet_opt) without…
CVE-2026-98431Medium· 5.5In the Linux kernel, the following vulnerability has been resolved: RDMA/uverbs: Fix mmap_lock/disassociation_lock circular dependency Commit 51976c6cd786 ("RDMA/core: Provide rdma_user_mmap_disassociate() to disassociate mmap pages") …
CVE-2026-98430NoneIn the Linux kernel, the following vulnerability has been resolved: RDMA/efa: Keep admin queues alive while IRQ is registered The management IRQ handler accesses both the admin completion queue and the async event queue
CVE-2026-98429High· 7.0In the Linux kernel, the following vulnerability has been resolved: RDMA/efa: Keep EQ resources alive while IRQ is registered The completion IRQ handler accesses the EQ state and DMA buffer
CVE-2026-98428NoneIn the Linux kernel, the following vulnerability has been resolved: ALSA: usb: 6fire: Avoid embedded URBs The USB 6fire driver uses URBs embedded in different structs for PCM, MIDI and communication, and this is basically a buggy imple…