- —Not scoredno CVSS score yet
- 0.20%Exploitation in 30 daysEPSS · top 90% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
Description
In the Linux kernel, the following vulnerability has been resolved: comedi: multiq3: sanitize config options in multiq3_attach() Syzbot identified an issue [1] in multiq3_attach() that induces a task timeout due to open() or COMEDI_DEVCONFIG ioctl operations, specifically, in the case of multiq3 driver. This problem arose when syzkaller managed to craft weird configuration options used to specify the number of channels in encoder subdevice. If a particularly great number is passed to s->n_chan in multiq3_attach() via it->options[2], then multiple calls to multiq3_encoder_reset() at the end of driver-specific attach() method will be running for minutes, thus blocking tasks and affected devices as well. While this issue is most likely not too dangerous for real-life devices, it still makes sense to sanitize configuration inputs. Enable a sensible limit on the number of encoder chips (4 chips max, each with 2 channels) to stop this behaviour from manifesting. [1] Syzbot crash: INFO: task syz.2.19:6067 blocked for more than 143 seconds. ... Call Trace: <TASK> context_switch kernel/sched/core.c:5254 [inline] __schedule+0x17c4/0x4d60 kernel/sched/core.c:6862 __schedule_loop kernel/sched/core.c:6944 [inline] schedule+0x165/0x360 kernel/sched/core.c:6959 schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:7016 __mutex_lock_common kernel/locking/mutex.c:676 [inline] __mutex_lock+0x7e6/0x1350 kernel/locking/mutex.c:760 comedi_open+0xc0/0x590 drivers/comedi/comedi_fops.c:2868 chrdev_open+0x4cc/0x5e0 fs/char_dev.c:414 do_dentry_open+0x953/0x13f0 fs/open.c:965 vfs_open+0x3b/0x340 fs/open.c:1097 ...
Timeline
ID reserved
By Linux
Published
- 5 months later
· 5 months later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
No CVSS score yet: neither the CNA, CISA nor NVD has scored this CVE. NVD status: Deferred.
- EPSS (exploitation in 30 days)
- 0.20% · top 90% of all CVEs (11 Nov 2026)
The list uses the assigner's score when there is one, then CISA's, then NVD's: Not scored.
Affected products
- affected 77e01cdbad5175f56027fd6fae00bd0fc175651a – < f9ff87aac7b37d462246c46d28912d382a8e2ea6
- affected 77e01cdbad5175f56027fd6fae00bd0fc175651a – < 4cde9a7e025cc09b88097c70606f6b30c22880f4
- affected 77e01cdbad5175f56027fd6fae00bd0fc175651a – < ad7ed3c9c7b8408e8612697bc43a5441fe386c71
- affected 77e01cdbad5175f56027fd6fae00bd0fc175651a – < 049f14557450351750f929ebfff36d849511e132
- affected 77e01cdbad5175f56027fd6fae00bd0fc175651a – < 8952bc1973cd54158c35e06bfb8c29ace7375a48
- affected 77e01cdbad5175f56027fd6fae00bd0fc175651a – < 8dc2f02d3bada9247f00bfd2e5f61f68c389a0a3
- affected 77e01cdbad5175f56027fd6fae00bd0fc175651a – < 543f4c380c2e1f35e60528df7cb54705cda7fee3
- affected 77e01cdbad5175f56027fd6fae00bd0fc175651a – < f24c6e3a39fa355dabfb684c9ca82db579534e72
- affected 2.6.30
- unaffected < 2.6.30
- unaffected 5.10.248 – ≤ 5.10.*
- unaffected 5.15.198 – ≤ 5.15.*
- unaffected 6.1.160 – ≤ 6.1.*
- unaffected 6.6.120 – ≤ 6.6.*
- unaffected 6.12.62 – ≤ 6.12.*
- unaffected 6.17.12 – ≤ 6.17.*
- unaffected 6.18.1 – ≤ 6.18.*
- unaffected 6.19 – ≤ *
References
References8
- https://git.kernel.org/stable/c/f9ff87aac7b37d462246c46d28912d382a8e2ea6 (opens in a new tab)
- https://git.kernel.org/stable/c/4cde9a7e025cc09b88097c70606f6b30c22880f4 (opens in a new tab)
- https://git.kernel.org/stable/c/ad7ed3c9c7b8408e8612697bc43a5441fe386c71 (opens in a new tab)
- https://git.kernel.org/stable/c/049f14557450351750f929ebfff36d849511e132 (opens in a new tab)
- https://git.kernel.org/stable/c/8952bc1973cd54158c35e06bfb8c29ace7375a48 (opens in a new tab)
- https://git.kernel.org/stable/c/8dc2f02d3bada9247f00bfd2e5f61f68c389a0a3 (opens in a new tab)
- https://git.kernel.org/stable/c/543f4c380c2e1f35e60528df7cb54705cda7fee3 (opens in a new tab)
- https://git.kernel.org/stable/c/f24c6e3a39fa355dabfb684c9ca82db579534e72 (opens in a new tab)
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2025-203743 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2025-68258)Record last updated .