linux: In the Linux kernel, the following vulnerability has been resolved: ubifs: dirty_cow_znode: Fix memleak in error han...
CVE-2023-53227 is fixed in linux on 1 platform, first by CVE-2023-53227, released September 15, 2025. It is not reported as exploited. Patch Radar priority: Routine.
In the Linux kernel, the following vulnerability has been resolved: ubifs: dirty_cow_znode: Fix memleak in error handling path Following process will cause a memleak for copied up znode: dirty_cow_znode zn = copy_znode(c, znode); err = insert_old_idx(c, zbr->lnum, zbr->offs); if (unlikely(err)) return ERR_PTR(err); // No one refers to zn. Fix it by adding copied znode back to tnc, then it will be freed by ubifs_destroy_tnc_subtree() while closing tnc. Fetch a reproducer in [Link].
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| linux · Debian 11.6 (bullseye) | 5.10.178-1 | CVE-2023-53227 | Sep 15, 2025 |
| linux · Debian 12.15 (bookworm) | 6.1.20-1 | CVE-2023-53227 | Sep 15, 2025 |
| linux · Debian 13.5 (trixie) | 6.1.20-1 | CVE-2023-53227 | Sep 15, 2025 |
| linux · Debian 14 | 6.1.20-1 | CVE-2023-53227 | Sep 15, 2025 |
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