CVE-2026-31598

high

In the Linux kernel, the following vulnerability has been resolved: ocfs2: fix possible deadlock between unlink and dio_end_io_write ocfs2_unlink takes orpha…

Vendor / product: Linux — linux kernel

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) ip_alloc_sem) orphan dir inode_lock): ocfs2_dio_end_io_write down_write(&oi->ip_alloc_sem)

CVSS

7.5

7.5 (CVSS v3.1)

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Severity source: NVD CVSS v3.1 (416baaa9-dc9f-4396-8d5f-8c081fb06d67)

Timeline (UTC)

Published: 2026-04-24 15:16

Modified: 2026-11-11 23:10

NVD status: Modified

Last synced 3 hours ago

Verified against the source API 2026-11-11 23:12 UTC

Exploitation

Not listed in CISA KEV (as of last catalog sync)

Absence from KEV does not mean a CVE is not exploited. Exploitation status: unknown (no authoritative evidence in our sources).

Affected products

linux / linux_kernel ≥4.6 <6.6.136, ≥6.7 <6.12.83, ≥6.13 <6.18.24, ≥6.19 <6.19.14, ≥7.0 <7.0.1

Weakness classification (CWE)

CWE-667 CWE-362

Source: NVD / CISA. “NVD-CWE-Other” and “NVD-CWE-noinfo” mean NVD could not assign a specific weakness.

Mitigation & advisories

Patch / mitigation: https://git.kernel.org/stable/c/2b884d52273c60c298bd570163e8053657bbaff6

Patch / mitigation: https://git.kernel.org/stable/c/4b80b5a838a32437f2cae0662578bac216a2c51a

Patch / mitigation: https://git.kernel.org/stable/c/b02da26a992db0c0e2559acbda0fc48d4a2fd337

Patch / mitigation: https://git.kernel.org/stable/c/bc0fb5c7d54c78be43a536df0e20dee32adb27d3

Patch / mitigation: https://git.kernel.org/stable/c/e049f7a9bd80b7319590789ea5e1c523d6339d91

Patch / mitigation: https://git.kernel.org/stable/c/f9fb1a7b635849322e1d7b7b6b26389778ec8e82

References

https://git.kernel.org/stable/c/297d8d7bb6a2bf133d3a3636edbdf94101cbd719 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/2b884d52273c60c298bd570163e8053657bbaff6 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/32630dee18c6bb2175c8a865a474749492eaf19c 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/4b80b5a838a32437f2cae0662578bac216a2c51a 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/93f35419eb84d58820040642cb6e7528fe4aba7a 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/b02da26a992db0c0e2559acbda0fc48d4a2fd337 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/bc0fb5c7d54c78be43a536df0e20dee32adb27d3 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/e049f7a9bd80b7319590789ea5e1c523d6339d91 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/f9fb1a7b635849322e1d7b7b6b26389778ec8e82 416baaa9-dc9f-4396-8d5f-8c081fb06d67

Data sources

NVD CVE API 2.0 — fetched 2026-11-11 23:12 UTC · record ↗

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CVE-2026-31598

Affected products

Weakness classification (CWE)

Mitigation & advisories

References

Data sources

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