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| Vulnerability ID | VCID-2bvq-sxrn-xkgb |
| Aliases |
CVE-2024-26756
|
| Summary | In the Linux kernel, the following vulnerability has been resolved: md: Don't register sync_thread for reshape directly Currently, if reshape is interrupted, then reassemble the array will register sync_thread directly from pers->run(), in this case 'MD_RECOVERY_RUNNING' is set directly, however, there is no guarantee that md_do_sync() will be executed, hence stop_sync_thread() will hang because 'MD_RECOVERY_RUNNING' can't be cleared. Last patch make sure that md_do_sync() will set MD_RECOVERY_DONE, however, following hang can still be triggered by dm-raid test shell/lvconvert-raid-reshape.sh occasionally: [root@fedora ~]# cat /proc/1982/stack [<0>] stop_sync_thread+0x1ab/0x270 [md_mod] [<0>] md_frozen_sync_thread+0x5c/0xa0 [md_mod] [<0>] raid_presuspend+0x1e/0x70 [dm_raid] [<0>] dm_table_presuspend_targets+0x40/0xb0 [dm_mod] [<0>] __dm_destroy+0x2a5/0x310 [dm_mod] [<0>] dm_destroy+0x16/0x30 [dm_mod] [<0>] dev_remove+0x165/0x290 [dm_mod] [<0>] ctl_ioctl+0x4bb/0x7b0 [dm_mod] [<0>] dm_ctl_ioctl+0x11/0x20 [dm_mod] [<0>] vfs_ioctl+0x21/0x60 [<0>] __x64_sys_ioctl+0xb9/0xe0 [<0>] do_syscall_64+0xc6/0x230 [<0>] entry_SYSCALL_64_after_hwframe+0x6c/0x74 Meanwhile mddev->recovery is: MD_RECOVERY_RUNNING | MD_RECOVERY_INTR | MD_RECOVERY_RESHAPE | MD_RECOVERY_FROZEN Fix this problem by remove the code to register sync_thread directly from raid10 and raid5. And let md_check_recovery() to register sync_thread. |
| Status | Published |
| Exploitability | 0.5 |
| Weighted Severity | 4.0 |
| Risk | 2.0 |
| Affected and Fixed Packages | Package Details |
| CWE-20 | Improper Input Validation |
| System | Score | Found at |
|---|---|---|
| cvssv3 | 4.4 | https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2024-26756.json |
| epss | 0.00019 | https://api.first.org/data/v1/epss?cve=CVE-2024-26756 |
| epss | 0.00019 | https://api.first.org/data/v1/epss?cve=CVE-2024-26756 |
| epss | 0.00019 | https://api.first.org/data/v1/epss?cve=CVE-2024-26756 |
| cvssv3.1 | 5.5 | https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml |
| ssvc | Track | https://git.kernel.org/stable/c/13b520fb62b772e408f9b79c5fe18ad414e90417 |
| ssvc | Track | https://git.kernel.org/stable/c/ad39c08186f8a0f221337985036ba86731d6aafe |
| Reference id | Reference type | URL |
|---|---|---|
| https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2024-26756.json | ||
| https://api.first.org/data/v1/epss?cve=CVE-2024-26756 | ||
| https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2024-26756 | ||
| https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml | ||
| 13b520fb62b772e408f9b79c5fe18ad414e90417 | https://git.kernel.org/stable/c/13b520fb62b772e408f9b79c5fe18ad414e90417 | |
| 2273211 | https://bugzilla.redhat.com/show_bug.cgi?id=2273211 | |
| ad39c08186f8a0f221337985036ba86731d6aafe | https://git.kernel.org/stable/c/ad39c08186f8a0f221337985036ba86731d6aafe |
| Attack Vector (AV) | Attack Complexity (AC) | Privileges Required (PR) | User Interaction (UI) | Scope (S) | Confidentiality Impact (C) | Integrity Impact (I) | Availability Impact (A) |
|---|---|---|---|---|---|---|---|
network adjacent_network local physical |
low high |
none low high |
none required |
unchanged changed |
high low none |
high low none |
high low none |
| Attack Vector (AV) | Attack Complexity (AC) | Privileges Required (PR) | User Interaction (UI) | Scope (S) | Confidentiality Impact (C) | Integrity Impact (I) | Availability Impact (A) |
|---|---|---|---|---|---|---|---|
network adjacent_network local physical |
low high |
none low high |
none required |
unchanged changed |
high low none |
high low none |
high low none |
| Percentile | 0.05396 |
| EPSS Score | 0.00019 |
| Published At | June 5, 2026, 12:55 p.m. |
| Date | Actor | Action | Source | VulnerableCode Version |
|---|---|---|---|---|
| 2026-06-04T16:49:55.383270+00:00 | Debian Importer | Import | https://security-tracker.debian.org/tracker/data/json | 38.6.0 |