Description
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 products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
Linux Linux
Default version status: unaffected
eec40579d84873dfb7021eb24c50360f073237c5 to < a705e056c2f3dd067fb2ff414f0537530baa090baffectedeec40579d84873dfb7021eb24c50360f073237c5 to < bd5a80128bdfc93b1cae935a70da000b8c483e6eaffectedeec40579d84873dfb7021eb24c50360f073237c5 to < 17eb2ab13edd0b06ce6f996c5fd450d7efabb2e8affectedeec40579d84873dfb7021eb24c50360f073237c5 to < 889374b8e4a60d13fe4a5a8ae3a311ca93d1a2c3affectedeec40579d84873dfb7021eb24c50360f073237c5 to < 01c49eae7c6256f2d8cc08210a2bac3ee070e43aaffectedeec40579d84873dfb7021eb24c50360f073237c5 to < 14e03ecd3b1b5fc03c082b27a2f8889f8290c30eaffectedeec40579d84873dfb7021eb24c50360f073237c5 to < b69ea153d30ce19ca8997eeeca1e2219fae5a29baffectedeec40579d84873dfb7021eb24c50360f073237c5 to < 9ae672606c17891d90b282e3490b817620549599affected
Linux Linux
Default version status: affected
3.15affected0 to < 3.15unaffected5.10.261 to ≤ 5.10.*unaffected5.15.212 to ≤ 5.15.*unaffected6.1.178 to ≤ 6.1.*unaffected6.6.145 to ≤ 6.6.*unaffected6.12.97 to ≤ 6.12.*unaffected6.18.40 to ≤ 6.18.*unaffected7.1.5 to ≤ 7.1.*unaffected7.2 to ≤ *unaffected
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 ↗