Description
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 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
d60b479d177a5735b6b4db6ee5280ef6653f50e7 to < 140cc839fbeb1ddb33a8da8811b716d88d3905b7affectedd60b479d177a5735b6b4db6ee5280ef6653f50e7 to < ebcacc7ca22d5e8a03a970f0621ae1d1356b9ae8affectedd60b479d177a5735b6b4db6ee5280ef6653f50e7 to < d3af62411e19752c663fe4f424dbf49d95a4cc7caffectedd60b479d177a5735b6b4db6ee5280ef6653f50e7 to < d92b8fac294b5f915c50e65ce4ae2262e53614ecaffectedd60b479d177a5735b6b4db6ee5280ef6653f50e7 to < a437e3bf30e32846079e470c1ba5ee790bccdf89affectedd60b479d177a5735b6b4db6ee5280ef6653f50e7 to < 9a6f8cd28bb9bb6ed86a6df19331fb08016dee7faffectedd60b479d177a5735b6b4db6ee5280ef6653f50e7 to < 5f73c8b33df9a605a591eab72d43a969600c1f8caffectedd60b479d177a5735b6b4db6ee5280ef6653f50e7 to < 46ef85f854dfa9d5226b3c1c46493d79556c9589affected
Linux Linux
Default version status: affected
3.5affected0 to < 3.5unaffected5.10.252 to ≤ 5.10.*unaffected5.15.202 to ≤ 5.15.*unaffected6.1.165 to ≤ 6.1.*unaffected6.6.128 to ≤ 6.6.*unaffected6.12.75 to ≤ 6.12.*unaffected6.18.16 to ≤ 6.18.*unaffected6.19.6 to ≤ 6.19.*unaffected7.0 to ≤ *unaffected
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 ↗