{"timestamp":"2024-06-12T16:21:25.318881Z","id":"CVE-2024-26899","options":[{"exploitation":"none"},{"automatable":"no"},{"technicalImpact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}

[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","programFiles":["block/holder.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","versions":[{"version":"1b0a2d950ee2a54aa04fb31ead32144be0bbf690","lessThan":"1e5c5b0abaee7b62a10b9707a62083b71ad21f62","versionType":"git","status":"affected"},{"version":"1b0a2d950ee2a54aa04fb31ead32144be0bbf690","lessThan":"5a87c1f7993bc8ac358a3766bac5dc7126e01e98","versionType":"git","status":"affected"},{"version":"1b0a2d950ee2a54aa04fb31ead32144be0bbf690","lessThan":"03f12122b20b6e6028e9ed69030a49f9cffcbb75","versionType":"git","status":"affected"}]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","programFiles":["block/holder.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","versions":[{"version":"6.7","status":"affected"},{"version":"0","lessThan":"6.7","versionType":"semver","status":"unaffected"},{"version":"6.7.11","lessThanOrEqual":"6.7.*","versionType":"semver","status":"unaffected"},{"version":"6.8.2","lessThanOrEqual":"6.8.*","versionType":"semver","status":"unaffected"},{"version":"6.9","lessThanOrEqual":"*","versionType":"original_commit_for_fix","status":"unaffected"}]}]

https://git.kernel.org/stable/c/03f12122b20b6e6028e9ed69030a49f9cffcbb75

https://git.kernel.org/stable/c/1e5c5b0abaee7b62a10b9707a62083b71ad21f62

https://git.kernel.org/stable/c/5a87c1f7993bc8ac358a3766bac5dc7126e01e98

NIST AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

NIST CWE-667

OR
     *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 6.7 up to (excluding) 6.7.11
     *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 6.8 up to (excluding) 6.8.2

https://git.kernel.org/stable/c/03f12122b20b6e6028e9ed69030a49f9cffcbb75 No Types Assigned

https://git.kernel.org/stable/c/03f12122b20b6e6028e9ed69030a49f9cffcbb75 Patch

https://git.kernel.org/stable/c/1e5c5b0abaee7b62a10b9707a62083b71ad21f62 No Types Assigned

https://git.kernel.org/stable/c/1e5c5b0abaee7b62a10b9707a62083b71ad21f62 Patch

https://git.kernel.org/stable/c/5a87c1f7993bc8ac358a3766bac5dc7126e01e98 No Types Assigned

https://git.kernel.org/stable/c/5a87c1f7993bc8ac358a3766bac5dc7126e01e98 Patch

In the Linux kernel, the following vulnerability has been resolved:

block: fix deadlock between bd_link_disk_holder and partition scan

'open_mutex' of gendisk is used to protect open/close block devices. But
in bd_link_disk_holder(), it is used to protect the creation of symlink
between holding disk and slave bdev, which introduces some issues.

When bd_link_disk_holder() is called, the driver is usually in the process
of initialization/modification and may suspend submitting io. At this
time, any io hold 'open_mutex', such as scanning partitions, can cause
deadlocks. For example, in raid:

T1                              T2
bdev_open_by_dev
 lock open_mutex [1]
 ...
  efi_partition
  ...
   md_submit_bio
				md_ioctl mddev_syspend
				  -> suspend all io
				 md_add_new_disk
				  bind_rdev_to_array
				   bd_link_disk_holder
				    try lock open_mutex [2]
    md_handle_request
     -> wait mddev_resume

T1 scan partition, T2 add a new device to raid. T1 waits for T2 to resume
mddev, but T2 waits for open_mutex held by T1. Deadlock occurs.

Fix it by introducing a local mutex 'blk_holder_mutex' to replace
'open_mutex'.

kernel.org https://git.kernel.org/stable/c/03f12122b20b6e6028e9ed69030a49f9cffcbb75 [No types assigned]

kernel.org https://git.kernel.org/stable/c/1e5c5b0abaee7b62a10b9707a62083b71ad21f62 [No types assigned]

kernel.org https://git.kernel.org/stable/c/5a87c1f7993bc8ac358a3766bac5dc7126e01e98 [No types assigned]