What is CVE-2024-26755?

CVE-2024-26755 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.3 out of 10, affecting Linux kernel versions from 6.7 onward and patched in 6.7.7 and 6.8. CVE-2024-26755 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2024-26755?

CVE-2024-26755 has a CVSS score of 5.3 out of 10, rated Medium severity. The vector string is CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L.

Is there a patch available for CVE-2024-26755?

Yes, CVE-2024-26755 has been patched. Fixed versions include 6.7.7 and 6.8. If you are running Linux kernel 6.7 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2024-26755 actively exploited?

CVE-2024-26755 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

CVE-2024-26755

Medium

In the Linux kernel, the following vulnerability has been resolved: md: Don't suspend the array for interrupted reshape md_start_sync() 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(remove_and_add_spares won't be called from md_choose_sync_action 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 md_start_sync() 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.

Package Linux Kernel

Published 2024-04-03

Last modified 2025-04-04

CVSS version 3.1

Patch available

Yes

CVSS 3.1 score

5.3

out of 10

Medium

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

Low

Integrity

None

Availability

Low

Vector string

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

Weakness type

CWE-129

CVE-2024-26755 is classified as CWE-129

See CWE-129 on MITRE CWE for full details on this weakness type.

Affected versions

Linux kernel versions 6.7 and later are affected. Fixed in 6.7.7, 6.8 and their respective stable series.

Affected from

≥ 6.7

Fixed in

✓ 6.7.7 6.7.x ✓ 6.8

References

2 total

Kernel Git
https://git.kernel.org/stable/c/60d6130d0ac1d883ed93c2a1e10aadb60967fd48

Patch
Kernel Git
https://git.kernel.org/stable/c/9e46c70e829bddc24e04f963471e9983a11598b7

Patch

Details

CVE ID CVE-2024-26755

Severity Medium

CVSS score 5.3 / 10

CVSS version 3.1

Published 2024-04-03

Modified 2025-04-04

KEV No

Patch

Yes

Package linux

Frequently asked questions

What is CVE-2024-26755?

CVE-2024-26755 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.3 out of 10 . It affects Linux kernel versions from 6.7 onward and has been patched in 6.7.7 and 6.8. CVE-2024-26755 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2024-26755?

CVE-2024-26755 has a CVSS score of 5.3 out of 10, rated Medium severity (CVSS 3.1). The vector string is CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L.
Is there a patch available for CVE-2024-26755?

Yes. CVE-2024-26755 has been patched. Fixed versions include 6.7.7 and 6.8. If you are running Linux kernel 6.7 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2024-26755 actively exploited?

No. CVE-2024-26755 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.