CVE-2026-72030ata: libata-core: Reject an invalid concurrent positioning ranges count
- —Not scoredno CVSS score yet
- 0.21%Exploitation in 30 daysEPSS · top 89% 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: ata: libata-core: Reject an invalid concurrent positioning ranges count ata_dev_config_cpr() takes the number of range descriptors from buf[0] of the concurrent positioning ranges log (up to 255), which the device reports independently of the log size in the GPL directory. The count is then walked at a fixed 32-byte stride in two places with no bound: the log read here, and the INQUIRY VPD page B9h emitter, which writes one descriptor per range into the fixed 2048-byte ata_scsi_rbuf. A device reporting a count larger than its own log overflows the read buffer (up to 7704 bytes past a 512-byte slab), and a count above 62 overflows the response buffer on the emit side. Bound the count once, on probe, against both the log the device returned and the number of descriptors the VPD B9h response buffer can hold (ATA_DEV_MAX_CPR, derived from the rbuf size). Reject an out-of-range count with a warning; this keeps the emitter in bounds with no separate change there.
Timeline
ID reserved
By Linux
- 6 days later
· 6 days later
Published
- 3 months later
· 3 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: Received.
- EPSS (exploitation in 30 days)
- 0.21% · top 89% of all CVEs (12 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: no · Technical impact: partial
The list uses the assigner's score when there is one, then CISA's, then NVD's: Not scored.
Affected products
- affected fe22e1c2f705676a705d821301fc52eecc2fe055 – < 01d7d321e6046f87ba270aeeffdc5260209bd91e
- affected fe22e1c2f705676a705d821301fc52eecc2fe055 – < 4cb4b4dd8853c4ab3057efe238b2c34277772176
- affected fe22e1c2f705676a705d821301fc52eecc2fe055 – < b1607f0ee5f5e53e0aa66f41794085b7cc98f5d1
- affected fe22e1c2f705676a705d821301fc52eecc2fe055 – < 4c1e8ccd8655ee8cf1bcb1b7dfee72c9fa941fd4
- affected fe22e1c2f705676a705d821301fc52eecc2fe055 – < d43efd1b5d976203e6f1ef26f67e8b1a7bc2751b
- affected fe22e1c2f705676a705d821301fc52eecc2fe055 – < 533a0b940f901c15e5cbbd4b5d66e871c209e8ce
- affected 5.16
- unaffected < 5.16
- unaffected 6.1.184 – ≤ 6.1.*
- unaffected 6.6.148 – ≤ 6.6.*
- unaffected 6.12.101 – ≤ 6.12.*
- unaffected 6.18.42 – ≤ 6.18.*
- unaffected 7.1.5 – ≤ 7.1.*
- unaffected 7.2 – ≤ *
References
References6
- https://git.kernel.org/stable/c/01d7d321e6046f87ba270aeeffdc5260209bd91e (opens in a new tab)
- https://git.kernel.org/stable/c/4cb4b4dd8853c4ab3057efe238b2c34277772176 (opens in a new tab)
- https://git.kernel.org/stable/c/b1607f0ee5f5e53e0aa66f41794085b7cc98f5d1 (opens in a new tab)
- https://git.kernel.org/stable/c/4c1e8ccd8655ee8cf1bcb1b7dfee72c9fa941fd4 (opens in a new tab)
- https://git.kernel.org/stable/c/d43efd1b5d976203e6f1ef26f67e8b1a7bc2751b (opens in a new tab)
- https://git.kernel.org/stable/c/533a0b940f901c15e5cbbd4b5d66e871c209e8ce (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-2026-58988 (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-2026-72030)Record last updated .