Description (CNA)
In the Linux kernel, the following vulnerability has been resolved: orangefs: fix double-free of trailer_buf on readdir copy failure On a readdir downcall, orangefs_devreq_write_iter() frees op->downcall.trailer_buf with vfree() when copy_from_iter_full() fails, but does not clear the pointer before goto Efault. The waiter in do_readdir() is then woken with a negative status and frees the same pointer again on its r < 0 path, causing a deterministic double-free. A client holding /dev/pvfs2-req triggers it by sending a readdir downcall whose declared trailer_size exceeds the bytes it supplies. Clear the pointer after freeing so the readdir-side vfree() becomes a no-op.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected 382f4581e67f57209c7aa67e39f26ba076306a2e before 712c4235fcc73c11a2f1d59a499d489e49c374a4; affected 382f4581e67f57209c7aa67e39f26ba076306a2e before 433c2e470053cc9c712314d3d8c3dfbc862d68eb; affected 382f4581e67f57209c7aa67e39f26ba076306a2e before 6e5924644ef4bce06a3cbb7cb841a8bbfdfc03ad; affected 382f4581e67f57209c7aa67e39f26ba076306a2e before 9c9eacc47c618ed6d7d35fe75a40d294c8cdbffa; affected 382f4581e67f57209c7aa67e39f26ba076306a2e before 2f5454a25127854c232fde5d1d65d16fbcd42d43; affected 382f4581e67f57209c7aa67e39f26ba076306a2e before f796f38a324e89547738f4b70cc33be5be2bc6da; affected 382f4581e67f57209c7aa67e39f26ba076306a2e before 519f4146b8b8c5f20c2ad01913acd6df2df8fc8e; affected 382f4581e67f57209c7aa67e39f26ba076306a2e before f574296be7f46eb60beca851240b526df232f480 |
| Linux / Linux | affected 4.12; unaffected 0 before 4.12; unaffected 5.10.270 through 5.10.*; unaffected 5.15.221 through 5.15.*; unaffected 6.1.188 through 6.1.*; unaffected 6.6.157 through 6.6.*; unaffected 6.12.109 through 6.12.*; unaffected 6.18.50 through 6.18.*; unaffected 7.2.4 through 7.2.*; unaffected 7.3 through * |
CWE
No CWE identifiers supplied.
References
- https://git.kernel.org/stable/c/712c4235fcc73c11a2f1d59a499d489e49c374a4
- https://git.kernel.org/stable/c/433c2e470053cc9c712314d3d8c3dfbc862d68eb
- https://git.kernel.org/stable/c/6e5924644ef4bce06a3cbb7cb841a8bbfdfc03ad
- https://git.kernel.org/stable/c/9c9eacc47c618ed6d7d35fe75a40d294c8cdbffa
- https://git.kernel.org/stable/c/2f5454a25127854c232fde5d1d65d16fbcd42d43
- https://git.kernel.org/stable/c/f796f38a324e89547738f4b70cc33be5be2bc6da
- https://git.kernel.org/stable/c/519f4146b8b8c5f20c2ad01913acd6df2df8fc8e
- https://git.kernel.org/stable/c/f574296be7f46eb60beca851240b526df232f480