CVE-2022-48806: eeprom: ee1004: limit i2c reads to I2C_SMBUS_BLOCK_MAX
Vulnerability summary
CVE-2022-48806 is a medium (CVSS 5.5) Integer Overflow or Wraparound vulnerability in linux. EPSS estimates a 0.28% chance of exploitation in the next 30 days, higher than 20.9% of scored vulnerabilities.
Not severe (CVSS 5.5, local access); no exploitation reported by the 5 checked sources
Source freshness unavailable
How is this decided?Advisory lineage
Upstream 0 · Downstream 5 · Related 5Timeline
- 16-07-2024PublishedVulnerability first disclosed.
- 23-05-2026Last modifiedVulnerability information updated.
Description
In the Linux kernel, the following vulnerability has been resolved: eeprom: ee1004: limit i2c reads to I2C_SMBUS_BLOCK_MAX Commit effa453168a7 ("i2c: i801: Don't silently correct invalid transfer size") revealed that ee1004_eeprom_read() did not properly limit how many bytes to read at once. In particular, i2c_smbus_read_i2c_block_data_or_emulated() takes the length to read as an u8. If count == 256 after taking into account the offset and page boundary, the cast to u8 overflows. And this is common when user space tries to read the entire EEPROM at once. To fix it, limit each read to I2C_SMBUS_BLOCK_MAX (32) bytes, already the maximum length i2c_smbus_read_i2c_block_data_or_emulated() allows.
CVSS metrics
4 scores · 3 sources · 2 versions- OSV · UbuntuEcosystem advisory · calculated5.5MediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- OSV · DebianEcosystem advisory · calculated5.5MediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
EPSS trend
Probability
0.28%
Chance of exploitation in the next 30 days
Percentile
21%
Versus all other CVEs
30-day change
No change 0.00 pp
From 0.28% on 04-10-2026
Known exploited
Compare KEV catalogs
CISA KEVNot in the CISA KEV catalog.
ENISA CNWNot in the ENISA CNW catalog.
CIRCLNot in the CIRCL catalog.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Known conditions: local access, low-privilege account, no user interaction (CVSS vector). Other conditions: not stated in public data.
Ubuntu92 products
- linuxAll versions (No fix recorded) | < 5.4.0-110.124
- linux-allwinner-5.19All versions (No fix recorded)
- linux-awsAll versions (No fix recorded) | < 5.4.0-1073.78
- linux-aws-5.0All versions (No fix recorded)
- linux-aws-5.11All versions (No fix recorded)
Linux2 products
- linux≥ aca56c298e2a6d20ab6308e203a8d37f2a7759d3, < 3937c35493ee2847aaefcfa5460e94b7443eef49 | ≥ 25714ad6bf5e98025579fa4c08ff2041a663910c, < a37960df7eac3cc8094bd1ab84864e9e32c91345 | ≥ be9313f755a7bfa02230b15731d07074d5255ecb, < 9a5f471ae380f9fcb9756d453c12ca1f8595a93c | ≥ 07d9beb6e3c2e852e884113d6803ea4b3643ae38, < 9443ddeb3754e9e382a396b50adc1961301713ce | ≥ effa453168a7eeb8a562ff4edc1dbf9067360a61, < c0689e46be23160d925dca95dfc411f1a0462708 | 74650c34f93044d3ab441235f161f9e1e761e96b | a126a8c3dd51519513141b4fc94fd4813bca2c0f | 202d0e22fe512df0f1cb6253d40ce1058e373247 | 7414af7bdad9a9cddb3a765ca98ea207048618c5 | ≥ 4.4.300, < 4.5 | ≥ 4.9.298, < 4.10 | ≥ 4.14.263, < 4.15 | ≥ 4.19.226, < 4.20 | ≥ 5.4.174, < 5.4.180 | ≥ 5.10.94, < 5.10.101 | ≥ 5.15.17, < 5.15.24 | ≥ 5.16.3, < 5.16.10
- linux_kernel≥ 4.4.300, < 4.5 | ≥ 4.9.298, < 4.10 | ≥ 4.14.263, < 4.15 | ≥ 4.19.226, < 4.20 | ≥ 5.4.174, < 5.4.180 | ≥ 5.10.94, < 5.10.101 | ≥ 5.15.17, < 5.15.24 | ≥ 5.16.3, < 5.16.10 | 5.17:rc1 | 5.17:rc2 | 5.17:rc3
Debian1 product
- linux< 5.16.10-1
3 vendors · 95 products
