linux: In the Linux kernel, the following vulnerability has been resolved: ovl: keep err zero after successful ovl_cache_ge...
CVE-2026-53174 is fixed in linux on 1 platform by DEBIAN-CVE-2026-53174 (version 7.0.13-1), released June 28, 2026. It is not reported as exploited. Patch Radar priority: High.
In the Linux kernel, the following vulnerability has been resolved: ovl: keep err zero after successful ovl_cache_get() ovl_iterate_merged() stores PTR_ERR(cache) in err before checking IS_ERR(cache). On success err holds the truncated cache pointer and can be returned as a bogus non-zero error. The syzbot reproducer reaches this through overlay-on-overlay readdir: getdents64 iterate_dir(outer overlay file) ovl_iterate_merged() ovl_cache_get() ovl_dir_read_merged() ovl_dir_read() iterate_dir(inner overlay file) ovl_iterate_merged() Only compute PTR_ERR(cache) on the error path.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| linux · Debian 14 | 7.0.13-1 | DEBIAN-CVE-2026-53174 | Jun 28, 2026 |
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