CVE-2023-53227
Published: September 16, 2025Last modified: September 16, 2025
Description
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].
Status
| Product | Release | Package | Status |
|---|---|---|---|
| Alpaquita Linux | 23 LTS | linux-lts | Not affected (6.1.33-r0) |
| 25 LTS | linux-lts | Not affected (6.6.89-r0) | |
| Stream | linux-lts | Fixed (6.6.58-r0) |
References
- https://git.kernel.org/stable/c/011050fc471cd0b32410694facb47bac20e7262b
- https://git.kernel.org/stable/c/10b6c359e374df1120b951768260083ef047d7fb
- https://git.kernel.org/stable/c/122deabfe1428bffe95e2bf364ff8a5059bdf089
- https://git.kernel.org/stable/c/510b80abe8d2d89e4ff21d71f1804ba2e5d3a96b
- https://git.kernel.org/stable/c/5759076fc7c54614084002345a21bc2c578bf4a8
- https://git.kernel.org/stable/c/76c488e8a0e2783c6d8753cb7354a420593e8c30
- https://git.kernel.org/stable/c/9d4768523b092bfb9a9bfa6b1d903b968c8008cf
- https://git.kernel.org/stable/c/bbcf899036eeb98c3a938fb08946c6b52771f71c