CVE-2026-68131
rbd: Reset positive result codes to zero in object map update path
Description
In the Linux kernel, the following vulnerability has been resolved: rbd: Reset positive result codes to zero in object map update path In a reply message to an RBD request, a positive result code indicates a data payload, which is not allowed for writes. While rbd_osd_req_callback() already resets a positive result code for writes to zero, rbd_object_map_callback() does not. This allows a corrupted reply to an object map update to trigger the rbd_assert(*result < 0) in __rbd_obj_handle_request(). This happens, because rbd_object_map_callback() calls rbd_obj_handle_request() -> __rbd_obj_handle_request() and passes this positive result code. From __rbd_obj_handle_request(), rbd_obj_advance_write() is called, which leaves the positive result code unchanged and returns true. Therefore, the if(done && *result) branch is executed in __rbd_obj_handle_request() and the assertion triggers. This patch fixes the issue by adjusting the logic in the rbd_object_map_callback() path. A positive result code for an object map update is now reset to zero (similar to rbd_osd_req_callback()), and the message is subsequently handled the same way as if the result code was zero from the beginning. Additionally, a WARN_ON_ONCE() is added for this case.
INFO
Published Date :
Aug. 10, 2026, 1:19 p.m.
Last Modified :
Aug. 17, 2026, 5:18 a.m.
Remotely Exploit :
Yes !
Source :
416baaa9-dc9f-4396-8d5f-8c081fb06d67
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | HIGH | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 |
Solution
- Update the Linux kernel.
- Apply the patch for rbd_object_map_callback logic.
- Ensure positive result codes are reset to zero.
- Monitor for WARN_ON_ONCE messages.
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-2026-68131.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-68131 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-2026-68131
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-2026-68131 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-68131 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.
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CVE Modified by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Aug. 17, 2026
Action Type Old Value New Value Changed Affected [{'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '22e8bd51bb0469d1a524130a057f894ff632376a', 'lessThan': '14995c4250f04b58bf6fc00e0e973a2e1b3cfb9b', 'versionType': 'git'}, {'status': 'affected', 'version': '22e8bd51bb0469d1a524130a057f894ff632376a', 'lessThan': '2419aa74081007dc4d14ff5640659052dfdfd69a', 'versionType': 'git'}, {'status': 'affected', 'version': '22e8bd51bb0469d1a524130a057f894ff632376a', 'lessThan': '34f2a2f32af570dfcc532ad70c080629ee1c32b0', 'versionType': 'git'}, {'status': 'affected', 'version': '22e8bd51bb0469d1a524130a057f894ff632376a', 'lessThan': 'b1a61366933224b3ad80975c4d01ac2cc6931ecf', 'versionType': 'git'}, {'status': 'affected', 'version': '22e8bd51bb0469d1a524130a057f894ff632376a', 'lessThan': 'a6c4250b81bd30beae94e1b7a4b26fa1193ad2e4', 'versionType': 'git'}], 'programFiles': ['drivers/block/rbd.c'], 'defaultStatus': 'unaffected'}, {'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '5.3'}, {'status': 'unaffected', 'version': '0', 'lessThan': '5.3', 'versionType': 'semver'}, {'status': 'unaffected', 'version': '6.6.148', 'versionType': 'semver', 'lessThanOrEqual': '6.6.*'}, {'status': 'unaffected', 'version': '6.12.101', 'versionType': 'semver', 'lessThanOrEqual': '6.12.*'}, {'status': 'unaffected', 'version': '6.18.42', 'versionType': 'semver', 'lessThanOrEqual': '6.18.*'}, {'status': 'unaffected', 'version': '7.1.6', 'versionType': 'semver', 'lessThanOrEqual': '7.1.*'}, {'status': 'unaffected', 'version': '7.2-rc5', 'versionType': 'original_commit_for_fix', 'lessThanOrEqual': '*'}], 'programFiles': ['drivers/block/rbd.c'], 'defaultStatus': 'affected'}] [{'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '22e8bd51bb0469d1a524130a057f894ff632376a', 'lessThan': '14995c4250f04b58bf6fc00e0e973a2e1b3cfb9b', 'versionType': 'git'}, {'status': 'affected', 'version': '22e8bd51bb0469d1a524130a057f894ff632376a', 'lessThan': '2419aa74081007dc4d14ff5640659052dfdfd69a', 'versionType': 'git'}, {'status': 'affected', 'version': '22e8bd51bb0469d1a524130a057f894ff632376a', 'lessThan': '34f2a2f32af570dfcc532ad70c080629ee1c32b0', 'versionType': 'git'}, {'status': 'affected', 'version': '22e8bd51bb0469d1a524130a057f894ff632376a', 'lessThan': 'b1a61366933224b3ad80975c4d01ac2cc6931ecf', 'versionType': 'git'}, {'status': 'affected', 'version': '22e8bd51bb0469d1a524130a057f894ff632376a', 'lessThan': 'a6c4250b81bd30beae94e1b7a4b26fa1193ad2e4', 'versionType': 'git'}], 'programFiles': ['drivers/block/rbd.c'], 'defaultStatus': 'unaffected'}, {'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '5.3'}, {'status': 'unaffected', 'version': '0', 'lessThan': '5.3', 'versionType': 'semver'}, {'status': 'unaffected', 'version': '6.6.148', 'versionType': 'semver', 'lessThanOrEqual': '6.6.*'}, {'status': 'unaffected', 'version': '6.12.101', 'versionType': 'semver', 'lessThanOrEqual': '6.12.*'}, {'status': 'unaffected', 'version': '6.18.42', 'versionType': 'semver', 'lessThanOrEqual': '6.18.*'}, {'status': 'unaffected', 'version': '7.1.6', 'versionType': 'semver', 'lessThanOrEqual': '7.1.*'}, {'status': 'unaffected', 'version': '7.2', 'versionType': 'original_commit_for_fix', 'lessThanOrEqual': '*'}], 'programFiles': ['drivers/block/rbd.c'], 'defaultStatus': 'affected'}] -
CVE Modified by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Aug. 13, 2026
Action Type Old Value New Value Added CVSS V3.1 AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H -
New CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Aug. 10, 2026
Action Type Old Value New Value Added Affected [{'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '22e8bd51bb0469d1a524130a057f894ff632376a', 'lessThan': '14995c4250f04b58bf6fc00e0e973a2e1b3cfb9b', 'versionType': 'git'}, {'status': 'affected', 'version': '22e8bd51bb0469d1a524130a057f894ff632376a', 'lessThan': '2419aa74081007dc4d14ff5640659052dfdfd69a', 'versionType': 'git'}, {'status': 'affected', 'version': '22e8bd51bb0469d1a524130a057f894ff632376a', 'lessThan': '34f2a2f32af570dfcc532ad70c080629ee1c32b0', 'versionType': 'git'}, {'status': 'affected', 'version': '22e8bd51bb0469d1a524130a057f894ff632376a', 'lessThan': 'b1a61366933224b3ad80975c4d01ac2cc6931ecf', 'versionType': 'git'}, {'status': 'affected', 'version': '22e8bd51bb0469d1a524130a057f894ff632376a', 'lessThan': 'a6c4250b81bd30beae94e1b7a4b26fa1193ad2e4', 'versionType': 'git'}], 'programFiles': ['drivers/block/rbd.c'], 'defaultStatus': 'unaffected'}, {'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '5.3'}, {'status': 'unaffected', 'version': '0', 'lessThan': '5.3', 'versionType': 'semver'}, {'status': 'unaffected', 'version': '6.6.148', 'versionType': 'semver', 'lessThanOrEqual': '6.6.*'}, {'status': 'unaffected', 'version': '6.12.101', 'versionType': 'semver', 'lessThanOrEqual': '6.12.*'}, {'status': 'unaffected', 'version': '6.18.42', 'versionType': 'semver', 'lessThanOrEqual': '6.18.*'}, {'status': 'unaffected', 'version': '7.1.6', 'versionType': 'semver', 'lessThanOrEqual': '7.1.*'}, {'status': 'unaffected', 'version': '7.2-rc5', 'versionType': 'original_commit_for_fix', 'lessThanOrEqual': '*'}], 'programFiles': ['drivers/block/rbd.c'], 'defaultStatus': 'affected'}] Added Description In the Linux kernel, the following vulnerability has been resolved: rbd: Reset positive result codes to zero in object map update path In a reply message to an RBD request, a positive result code indicates a data payload, which is not allowed for writes. While rbd_osd_req_callback() already resets a positive result code for writes to zero, rbd_object_map_callback() does not. This allows a corrupted reply to an object map update to trigger the rbd_assert(*result < 0) in __rbd_obj_handle_request(). This happens, because rbd_object_map_callback() calls rbd_obj_handle_request() -> __rbd_obj_handle_request() and passes this positive result code. From __rbd_obj_handle_request(), rbd_obj_advance_write() is called, which leaves the positive result code unchanged and returns true. Therefore, the if(done && *result) branch is executed in __rbd_obj_handle_request() and the assertion triggers. This patch fixes the issue by adjusting the logic in the rbd_object_map_callback() path. A positive result code for an object map update is now reset to zero (similar to rbd_osd_req_callback()), and the message is subsequently handled the same way as if the result code was zero from the beginning. Additionally, a WARN_ON_ONCE() is added for this case. Added Reference https://git.kernel.org/stable/c/14995c4250f04b58bf6fc00e0e973a2e1b3cfb9b Added Reference https://git.kernel.org/stable/c/2419aa74081007dc4d14ff5640659052dfdfd69a Added Reference https://git.kernel.org/stable/c/34f2a2f32af570dfcc532ad70c080629ee1c32b0 Added Reference https://git.kernel.org/stable/c/a6c4250b81bd30beae94e1b7a4b26fa1193ad2e4 Added Reference https://git.kernel.org/stable/c/b1a61366933224b3ad80975c4d01ac2cc6931ecf