CVE-2026-72316
N/A
N/A
Summary
In the Linux kernel, the following vulnerability has been resolved:
dm era: fix NULL pointer dereference in metadata_open()
metadata_open() returns NULL when kzalloc_obj() fails, but the caller era_ctr() only checks IS_ERR(md). Since IS_ERR(NULL) returns false, the NULL pointer is treated as a valid result and later assigned to era->md, leading to a NULL pointer dereference when the metadata is accessed.
Fix this by returning ERR_PTR(-ENOMEM) on allocation failure, consistent with dm-cache-metadata.c, dm-thin-metadata.c, and dm-clone-metadata.c which all use ERR_PTR(-ENOMEM) for the same pattern.
Affected Software
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Linux | Linux | eec40579d84873dfb7021eb24c50360f073237c5 < a705e056c2f3dd067fb2ff414f0537530baa090b | affected |
| Linux | Linux | eec40579d84873dfb7021eb24c50360f073237c5 < bd5a80128bdfc93b1cae935a70da000b8c483e6e | affected |
| Linux | Linux | eec40579d84873dfb7021eb24c50360f073237c5 < 17eb2ab13edd0b06ce6f996c5fd450d7efabb2e8 | affected |
| Linux | Linux | eec40579d84873dfb7021eb24c50360f073237c5 < 889374b8e4a60d13fe4a5a8ae3a311ca93d1a2c3 | affected |
| Linux | Linux | eec40579d84873dfb7021eb24c50360f073237c5 < 01c49eae7c6256f2d8cc08210a2bac3ee070e43a | affected |
| Linux | Linux | eec40579d84873dfb7021eb24c50360f073237c5 < 14e03ecd3b1b5fc03c082b27a2f8889f8290c30e | affected |
| Linux | Linux | eec40579d84873dfb7021eb24c50360f073237c5 < b69ea153d30ce19ca8997eeeca1e2219fae5a29b | affected |
| Linux | Linux | eec40579d84873dfb7021eb24c50360f073237c5 < 9ae672606c17891d90b282e3490b817620549599 | affected |
| Linux | Linux | 3.15 | affected |
| Linux | Linux | 0 < 3.15 | unaffected |
| Linux | Linux | 5.10.261 <= 5.10.* | unaffected |
| Linux | Linux | 5.15.212 <= 5.15.* | unaffected |
| Linux | Linux | 6.1.178 <= 6.1.* | unaffected |
| Linux | Linux | 6.6.145 <= 6.6.* | unaffected |
| Linux | Linux | 6.12.97 <= 6.12.* | unaffected |
| Linux | Linux | 6.18.40 <= 6.18.* | unaffected |
| Linux | Linux | 7.1.5 <= 7.1.* | unaffected |
| Linux | Linux | 7.2 <= * | unaffected |
Weaknesses
References
- https://git.kernel.org/stable/c/a705e056c2f3dd067fb2ff414f0537530baa090b
- https://git.kernel.org/stable/c/bd5a80128bdfc93b1cae935a70da000b8c483e6e
- https://git.kernel.org/stable/c/17eb2ab13edd0b06ce6f996c5fd450d7efabb2e8
- https://git.kernel.org/stable/c/889374b8e4a60d13fe4a5a8ae3a311ca93d1a2c3
- https://git.kernel.org/stable/c/01c49eae7c6256f2d8cc08210a2bac3ee070e43a
- https://git.kernel.org/stable/c/14e03ecd3b1b5fc03c082b27a2f8889f8290c30e
- https://git.kernel.org/stable/c/b69ea153d30ce19ca8997eeeca1e2219fae5a29b
- https://git.kernel.org/stable/c/9ae672606c17891d90b282e3490b817620549599
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