CVE-2026-72163None▾ SunlitIn the Linux kernel, the following vulnerability has been resolved: ocfs2: fix NULL h_transaction deref in ocfs2_assure_trans_credits [BUG] A direct write over unwritten extents can panic the kernel in ocfs2_assure_trans_credits() when…
▾ Sunlit zone — Low / medium · no exploitation signal
impact 2.8 · likelihood 0 · exploitation 0
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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.
Exploit-prediction probability, daily snapshots since Nov 6.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via CVEORG
Last analysed / modified upstream
0.2%
In the Linux kernel, the following vulnerability has been resolved:
ocfs2: fix NULL h_transaction deref in ocfs2_assure_trans_credits
[BUG] A direct write over unwritten extents can panic the kernel in ocfs2_assure_trans_credits() when the journal aborts during DIO completion. The crash is a general protection fault from a NULL pointer dereference.
[CAUSE] ocfs2_dio_end_io_write() loops over a direct write's unwritten extents, marking each written under a single journal handle. If the journal aborts (for example after an I/O error) while the extent tree is being updated, the handle is left aborted with its transaction pointer cleared. The extent merge treats that failure as not critical and reports success, so the loop keeps using the handle. ocfs2_assure_trans_credits() reads the handle's remaining credits without first checking whether the handle is aborted, and that read dereferences the cleared transaction pointer.
[FIX] A journal abort is recorded in the handle itself, so callers are expected to test the handle rather than rely on a returned error. Make ocfs2_assure_trans_credits() do that, as the other ocfs2 journal helpers already do, and return -EROFS when the handle is aborted.
Linux >= a68b896aa56e435506453ec8835bc991ec3ae687 < 2d80e9c56718435a9c9f5f24dbc954989aead579Linux >= 320273b5649bbcee87f9e65343077189699d2a7a < 942b818b396c24c452681803ff291552317d2ef1Linux >= 9ea2d1c6789722d58ec191f14f9a02518d55b6b4 < 7146d191dae3a8efdb957993fb61a55713186266Linux >= c05ffb693bfb42a48ef3ee88a55b57392984e111 < f14aaaa130356ee4adb44de947c098637c70df8fLinux >= be346c1a6eeb49d8fda827d2a9522124c2f72f36 < 6ad7532a23bc94076efe9f1486dd7f7493c090ffLinux >= be346c1a6eeb49d8fda827d2a9522124c2f72f36 < bd73971fad89d5ee4ea0ba9b92d2ea08733c4a64Linux >= be346c1a6eeb49d8fda827d2a9522124c2f72f36 < 253ed993e0b36997ec7b04c1ff76103b38241de2Linux >= be346c1a6eeb49d8fda827d2a9522124c2f72f36 < f9ab30c96b0f00c20c6dac93681bdae3a033d229Linux 331d1079d58206ff7dc5518185f800b412f89bc6Linux >= 5.10.221 < 5.10.261Linux >= 5.15.162 < 5.15.212Linux >= 6.1.97 < 6.1.178Linux >= 6.6.37 < 6.6.145Linux >= 6.9.8 < 6.10Linux 6.10Refer to the linked advisories for vendor-supplied fixes and affected version ranges.
Connected by shared product, vendor, weakness, or advisory.
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