CVE-2022-50301
iommu/omap: Fix buffer overflow in debugfs
- Published
- Updated
- Reserved
- Assigned by
- Linux
Description
In the Linux kernel, the following vulnerability has been resolved: iommu/omap: Fix buffer overflow in debugfs There are two issues here: 1) The "len" variable needs to be checked before the very first write. Otherwise if omap2_iommu_dump_ctx() with "bytes" less than 32 it is a buffer overflow. 2) The snprintf() function returns the number of bytes that *would* have been copied if there were enough space. But we want to know the number of bytes which were *actually* copied so use scnprintf() instead.
Timeline
ID reserved
By Linux
Published
- 8 months later
· 8 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
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Analyzed | 3.1 | High7.8 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
- EPSS (exploitation in 30 days)
- 0.19% · top 91% of all CVEs (7 Nov 2026)
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.8.
Weakness
Affected products
- affected bd4396f09a4a9e77423e92ec9448217ab46f6edf – < 706e359cf046c142db290244c3f4938b20fbe805
- affected bd4396f09a4a9e77423e92ec9448217ab46f6edf – < ec53b99b6b9da8b501f001595a6260c03b42d5b7
- affected bd4396f09a4a9e77423e92ec9448217ab46f6edf – < 648472df221f2bbffb433b964bcb87baccc586d8
- affected bd4396f09a4a9e77423e92ec9448217ab46f6edf – < 4010a1afaae1c0fb9c2cac5de703bed29b1f1782
- affected bd4396f09a4a9e77423e92ec9448217ab46f6edf – < 2fee0dbfaeaaa4bda04279ce772c4572b1429d04
- affected bd4396f09a4a9e77423e92ec9448217ab46f6edf – < 0c7043a5b5c3b35f5dc8875757f71e7f491d64d4
- affected bd4396f09a4a9e77423e92ec9448217ab46f6edf – < bd0438f534b2e31b12f0b39b355c5dc2bbdaf854
- affected bd4396f09a4a9e77423e92ec9448217ab46f6edf – < 9814cc350e0765ce69244bf55ae4c8b29facd27e
- affected bd4396f09a4a9e77423e92ec9448217ab46f6edf – < 184233a5202786b20220acd2d04ddf909ef18f29
- affected 3.19
- unaffected < 3.19
- unaffected 4.9.331 – ≤ 4.9.*
- unaffected 4.14.296 – ≤ 4.14.*
- unaffected 4.19.262 – ≤ 4.19.*
- unaffected 5.4.220 – ≤ 5.4.*
- unaffected 5.10.150 – ≤ 5.10.*
- unaffected 5.15.75 – ≤ 5.15.*
- unaffected 5.19.17 – ≤ 5.19.*
- unaffected 6.0.3 – ≤ 6.0.*
- unaffected 6.1 – ≤ *
References (9)
- https://git.kernel.org/stable/c/706e359cf046c142db290244c3f4938b20fbe805 (opens in a new tab)
- https://git.kernel.org/stable/c/ec53b99b6b9da8b501f001595a6260c03b42d5b7 (opens in a new tab)
- https://git.kernel.org/stable/c/648472df221f2bbffb433b964bcb87baccc586d8 (opens in a new tab)
- https://git.kernel.org/stable/c/4010a1afaae1c0fb9c2cac5de703bed29b1f1782 (opens in a new tab)
- https://git.kernel.org/stable/c/2fee0dbfaeaaa4bda04279ce772c4572b1429d04 (opens in a new tab)
- https://git.kernel.org/stable/c/0c7043a5b5c3b35f5dc8875757f71e7f491d64d4 (opens in a new tab)
- https://git.kernel.org/stable/c/bd0438f534b2e31b12f0b39b355c5dc2bbdaf854 (opens in a new tab)
- https://git.kernel.org/stable/c/9814cc350e0765ce69244bf55ae4c8b29facd27e (opens in a new tab)
- https://git.kernel.org/stable/c/184233a5202786b20220acd2d04ddf909ef18f29 (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)
- 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://trackcve.app/cve/CVE-2022-50301)Record last updated .