CVE-2024-26755

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Source
https://nvd.nist.gov/vuln/detail/CVE-2024-26755
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2024-26755.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2024-26755
Related
Published
2024-04-03T17:15:52Z
Modified
2024-11-09T01:54:59.115179Z
Summary
[none]
Details

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

md: Don't suspend the array for interrupted reshape

mdstartsync() will suspend the array if there are spares that can be added or removed from conf, however, if reshape is still in progress, this won't happen at all or data will be corrupted(removeandaddspares won't be called from mdchoosesyncaction for reshape), hence there is no need to suspend the array if reshape is not done yet.

Meanwhile, there is a potential deadlock for raid456:

1) reshape is interrupted;

2) set one of the disk WantReplacement, and add a new disk to the array, however, recovery won't start until the reshape is finished;

3) then issue an IO across reshpae position, this IO will wait for reshape to make progress;

4) continue to reshape, then mdstartsync() found there is a spare disk that can be added to conf, mddev_suspend() is called;

Step 4 and step 3 is waiting for each other, deadlock triggered. Noted this problem is found by code review, and it's not reporduced yet.

Fix this porblem by don't suspend the array for interrupted reshape, this is safe because conf won't be changed until reshape is done.

References

Affected packages

Debian:13 / linux

Package

Name
linux
Purl
pkg:deb/debian/linux?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
6.7.7-1

Affected versions

6.*

6.1.27-1
6.1.37-1
6.1.38-1
6.1.38-2~bpo11+1
6.1.38-2
6.1.38-3
6.1.38-4~bpo11+1
6.1.38-4
6.1.52-1
6.1.55-1~bpo11+1
6.1.55-1
6.1.64-1
6.1.66-1
6.1.67-1
6.1.69-1~bpo11+1
6.1.69-1
6.1.76-1~bpo11+1
6.1.76-1
6.1.82-1
6.1.85-1
6.1.90-1~bpo11+1
6.1.90-1
6.1.94-1~bpo11+1
6.1.94-1
6.1.98-1
6.1.99-1
6.1.106-1
6.1.106-2
6.1.106-3
6.1.112-1
6.1.115-1
6.3.1-1~exp1
6.3.2-1~exp1
6.3.4-1~exp1
6.3.5-1~exp1
6.3.7-1~bpo12+1
6.3.7-1
6.3.11-1
6.4~rc6-1~exp1
6.4~rc7-1~exp1
6.4.1-1~exp1
6.4.4-1~bpo12+1
6.4.4-1
6.4.4-2
6.4.4-3~bpo12+1
6.4.4-3
6.4.11-1
6.4.13-1
6.5~rc4-1~exp1
6.5~rc6-1~exp1
6.5~rc7-1~exp1
6.5.1-1~exp1
6.5.3-1~bpo12+1
6.5.3-1
6.5.6-1
6.5.8-1
6.5.10-1~bpo12+1
6.5.10-1
6.5.13-1
6.6.3-1~exp1
6.6.4-1~exp1
6.6.7-1~exp1
6.6.8-1
6.6.9-1
6.6.11-1
6.6.13-1~bpo12+1
6.6.13-1
6.6.15-1
6.6.15-2
6.7-1~exp1
6.7.1-1~exp1
6.7.4-1~exp1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}