Description (CNA)
In the Linux kernel, the following vulnerability has been resolved: md/md-bitmap: fix GPF in bitmap_get_stats() The commit message of commit 6ec1f0239485 ("md/md-bitmap: fix stats collection for external bitmaps") states: Remove the external bitmap check as the statistics should be available regardless of bitmap storage location. Return -EINVAL only for invalid bitmap with no storage (neither in superblock nor in external file). But, the code does not adhere to the above, as it does only check for a valid super-block for "internal" bitmaps. Hence, we observe: Oops: GPF, probably for non-canonical address 0x1cd66f1f40000028 RIP: 0010:bitmap_get_stats+0x45/0xd0 Call Trace: seq_read_iter+0x2b9/0x46a seq_read+0x12f/0x180 proc_reg_read+0x57/0xb0 vfs_read+0xf6/0x380 ksys_read+0x6d/0xf0 do_syscall_64+0x8c/0x1b0 entry_SYSCALL_64_after_hwframe+0x76/0x7e We fix this by checking the existence of a super-block for both the internal and external case.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected 065f4b1cd41d03702426af44193894b925607073 before a23b16ba3274961494f5ad236345d238364349ff; affected 0b5390aeaa85eb2f15e0e2ea0731c0995285db5e before 3d82a729530bd2110ba66e4a1f73461c776edec2; affected eeeba7f43ae27835718a5f5ad6552a8983e75201 before 3e0542701b37aa25b025d8531583458e4f014c2e; affected 6ec1f0239485028445d213d91cfee5242f3211ba before a18f9b08c70e10ea3a897058fee8a4f3b4c146ec; affected 6ec1f0239485028445d213d91cfee5242f3211ba before c17fb542dbd1db745c9feac15617056506dd7195; affected 896a6fbefc9050cf940ed57947eda6dc23aa58b0; affected 6.1.135 before 6.1.146; affected 6.6.88 before 6.6.99; affected 6.12.25 before 6.12.39; affected 6.14.4 before 6.15 |
| Linux / Linux | affected 6.15; unaffected 0 before 6.15; unaffected 6.1.146 through 6.1.*; unaffected 6.6.99 through 6.6.*; unaffected 6.12.39 through 6.12.*; unaffected 6.15.7 through 6.15.*; unaffected 6.16 through * |
CWE
No CWE identifiers supplied.
References
- https://git.kernel.org/stable/c/a23b16ba3274961494f5ad236345d238364349ff
- https://git.kernel.org/stable/c/3d82a729530bd2110ba66e4a1f73461c776edec2
- https://git.kernel.org/stable/c/3e0542701b37aa25b025d8531583458e4f014c2e
- https://git.kernel.org/stable/c/a18f9b08c70e10ea3a897058fee8a4f3b4c146ec
- https://git.kernel.org/stable/c/c17fb542dbd1db745c9feac15617056506dd7195
ADP enrichment
No English description supplied.
No English description supplied.