CVE-2026-93828exfat: fix handling of damaged volume in exfat_create_upcase_table()
- —Not scoredno CVSS score yet
- 0.17%Exploitation in 30 daysEPSS · top 94% 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: exfat: fix handling of damaged volume in exfat_create_upcase_table() When the size of the upcase table is set to zero in the dentry for any reason(e.g. corrupted media or misbehaving device), an integer overflow causes the module to loop indefinitely. If the size of the upcase table is read zero, do not attempt to load the table. Instead, fallback to loading the default upcase table. If the size of the upcase table is zero or no upcase table is found, raise exfat_fs_error() to mark the volume read-only.
Timeline
ID reserved
By Linux
- 6 days later
· 6 days later
Published
- 36 days later
· 36 days 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)
- 0.17% · top 94% of all CVEs (12 Nov 2026)
The list uses the assigner's score when there is one, then CISA's, then NVD's: Not scored.
Affected products
- affected 370e812b3ec190fa492c9fd5a80c38b086d105c0 – < 091ca992218105a050af0b863337e02a2d518b2f
- affected 370e812b3ec190fa492c9fd5a80c38b086d105c0 – < 29723256fccf46e55c2a44bd6b8345bef7ba079b
- affected 370e812b3ec190fa492c9fd5a80c38b086d105c0 – < 60ace93811609e4dd883e9de5fb4462ed834160a
- affected 370e812b3ec190fa492c9fd5a80c38b086d105c0 – < 2cc0b612343638057ef321ce735201a7c2f52f25
- affected 370e812b3ec190fa492c9fd5a80c38b086d105c0 – < 20dd3185d13865214ff25b0bf7b931e8d73be1ac
- affected 5.7
- unaffected < 5.7
- unaffected 6.1.191 – ≤ 6.1.*
- unaffected 6.6.160 – ≤ 6.6.*
- unaffected 6.12.111 – ≤ 6.12.*
- unaffected 6.18.53 – ≤ 6.18.*
- unaffected 7.2 – ≤ *
References
References5
- https://git.kernel.org/stable/c/091ca992218105a050af0b863337e02a2d518b2f (opens in a new tab)
- https://git.kernel.org/stable/c/29723256fccf46e55c2a44bd6b8345bef7ba079b (opens in a new tab)
- https://git.kernel.org/stable/c/60ace93811609e4dd883e9de5fb4462ed834160a (opens in a new tab)
- https://git.kernel.org/stable/c/2cc0b612343638057ef321ce735201a7c2f52f25 (opens in a new tab)
- https://git.kernel.org/stable/c/20dd3185d13865214ff25b0bf7b931e8d73be1ac (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-2026-86217 (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-2026-93828)Record last updated .