CVE-2024-26844
block: Fix WARNING in _copy_from_iter
Description
In the Linux kernel, the following vulnerability has been resolved: block: Fix WARNING in _copy_from_iter Syzkaller reports a warning in _copy_from_iter because an iov_iter is supposedly used in the wrong direction. The reason is that syzcaller managed to generate a request with a transfer direction of SG_DXFER_TO_FROM_DEV. This instructs the kernel to copy user buffers into the kernel, read into the copied buffers and then copy the data back to user space. Thus the iovec is used in both directions. Detect this situation in the block layer and construct a new iterator with the correct direction for the copy-in.
INFO
Published Date :
April 17, 2024, 10:15 a.m.
Last Modified :
April 2, 2025, 1:17 p.m.
Remotely Exploit :
No
Source :
416baaa9-dc9f-4396-8d5f-8c081fb06d67
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | MEDIUM | [email protected] |
Solution
- Update the affected packages to address the vulnerability.
- Apply relevant kernel updates.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2024-26844.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2024-26844 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2024-26844
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2024-26844 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2024-26844 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
Initial Analysis by [email protected]
Apr. 02, 2025
Action Type Old Value New Value Added CVSS V3.1 AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H Added CWE NVD-CWE-noinfo Added CPE Configuration OR *cpe:2.3:o:linux:linux_kernel:6.8:rc1:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 6.7 up to (excluding) 6.7.7 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 6.2 up to (excluding) 6.6.19 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions up to (excluding) 6.1.80 Added Reference Type CVE: https://git.kernel.org/stable/c/0f1bae071de9967602807472921829a54b2e5956 Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/0f1bae071de9967602807472921829a54b2e5956 Types: Patch Added Reference Type CVE: https://git.kernel.org/stable/c/13f3956eb5681a4045a8dfdef48df5dc4d9f58a6 Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/13f3956eb5681a4045a8dfdef48df5dc4d9f58a6 Types: Patch Added Reference Type CVE: https://git.kernel.org/stable/c/8fc80874103a5c20aebdc2401361aa01c817f75b Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/8fc80874103a5c20aebdc2401361aa01c817f75b Types: Patch Added Reference Type CVE: https://git.kernel.org/stable/c/cbaf9be337f7da25742acfce325119e3395b1f1b Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/cbaf9be337f7da25742acfce325119e3395b1f1b Types: Patch -
CVE Modified by af854a3a-2127-422b-91ae-364da2661108
Nov. 21, 2024
Action Type Old Value New Value Added Reference https://git.kernel.org/stable/c/0f1bae071de9967602807472921829a54b2e5956 Added Reference https://git.kernel.org/stable/c/13f3956eb5681a4045a8dfdef48df5dc4d9f58a6 Added Reference https://git.kernel.org/stable/c/8fc80874103a5c20aebdc2401361aa01c817f75b Added Reference https://git.kernel.org/stable/c/cbaf9be337f7da25742acfce325119e3395b1f1b -
CVE Modified by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
May. 29, 2024
Action Type Old Value New Value -
CVE Modified by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
May. 14, 2024
Action Type Old Value New Value -
CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Apr. 17, 2024
Action Type Old Value New Value Added Description In the Linux kernel, the following vulnerability has been resolved: block: Fix WARNING in _copy_from_iter Syzkaller reports a warning in _copy_from_iter because an iov_iter is supposedly used in the wrong direction. The reason is that syzcaller managed to generate a request with a transfer direction of SG_DXFER_TO_FROM_DEV. This instructs the kernel to copy user buffers into the kernel, read into the copied buffers and then copy the data back to user space. Thus the iovec is used in both directions. Detect this situation in the block layer and construct a new iterator with the correct direction for the copy-in. Added Reference kernel.org https://git.kernel.org/stable/c/8fc80874103a5c20aebdc2401361aa01c817f75b [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/0f1bae071de9967602807472921829a54b2e5956 [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/cbaf9be337f7da25742acfce325119e3395b1f1b [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/13f3956eb5681a4045a8dfdef48df5dc4d9f58a6 [No types assigned]