Description (CNA)
In the Linux kernel, the following vulnerability has been resolved: md/bitmap: fix GPF in write_page caused by resize race A General Protection Fault occurs in write_page() during array resize: RIP: 0010:write_page+0x22b/0x3c0 [md_mod] This is a use-after-free race between bitmap_daemon_work() and __bitmap_resize(). The daemon iterates over `bitmap->storage.filemap` without locking, while the resize path frees that storage via md_bitmap_file_unmap(). `quiesce()` does not stop the md thread, allowing concurrent access to freed pages. Fix by holding `mddev->bitmap_info.mutex` during the bitmap update.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected d60b479d177a5735b6b4db6ee5280ef6653f50e7 before 140cc839fbeb1ddb33a8da8811b716d88d3905b7; affected d60b479d177a5735b6b4db6ee5280ef6653f50e7 before ebcacc7ca22d5e8a03a970f0621ae1d1356b9ae8; affected d60b479d177a5735b6b4db6ee5280ef6653f50e7 before d3af62411e19752c663fe4f424dbf49d95a4cc7c; affected d60b479d177a5735b6b4db6ee5280ef6653f50e7 before d92b8fac294b5f915c50e65ce4ae2262e53614ec; affected d60b479d177a5735b6b4db6ee5280ef6653f50e7 before a437e3bf30e32846079e470c1ba5ee790bccdf89; affected d60b479d177a5735b6b4db6ee5280ef6653f50e7 before 9a6f8cd28bb9bb6ed86a6df19331fb08016dee7f; affected d60b479d177a5735b6b4db6ee5280ef6653f50e7 before 5f73c8b33df9a605a591eab72d43a969600c1f8c; affected d60b479d177a5735b6b4db6ee5280ef6653f50e7 before 46ef85f854dfa9d5226b3c1c46493d79556c9589 |
| Linux / Linux | affected 3.5; unaffected 0 before 3.5; unaffected 5.10.252 through 5.10.*; unaffected 5.15.202 through 5.15.*; unaffected 6.1.165 through 6.1.*; unaffected 6.6.128 through 6.6.*; unaffected 6.12.75 through 6.12.*; unaffected 6.18.16 through 6.18.*; unaffected 6.19.6 through 6.19.*; unaffected 7.0 through * |
CWE
No CWE identifiers supplied.
References
- https://git.kernel.org/stable/c/140cc839fbeb1ddb33a8da8811b716d88d3905b7
- https://git.kernel.org/stable/c/ebcacc7ca22d5e8a03a970f0621ae1d1356b9ae8
- https://git.kernel.org/stable/c/d3af62411e19752c663fe4f424dbf49d95a4cc7c
- https://git.kernel.org/stable/c/d92b8fac294b5f915c50e65ce4ae2262e53614ec
- https://git.kernel.org/stable/c/a437e3bf30e32846079e470c1ba5ee790bccdf89
- https://git.kernel.org/stable/c/9a6f8cd28bb9bb6ed86a6df19331fb08016dee7f
- https://git.kernel.org/stable/c/5f73c8b33df9a605a591eab72d43a969600c1f8c
- https://git.kernel.org/stable/c/46ef85f854dfa9d5226b3c1c46493d79556c9589