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CVE-2022-48806— eeprom: ee1004: limit i2c reads to I2C_SMBUS_BLOCK_MAX

Quick assessment

Affected
Linux Linux
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Linux kernel是美国Linux基金会的开源操作系统Linux所使用的内核。 Linux kernel 存在安全漏洞，该漏洞源于eeprom模块中发现I2C读取限制问题。ee1004_eeprom_read函数没有正确限制一次读取的字节数。

AI Predicted 5.5 Difficulty: Moderate EPSS 0.28% · P20

Possible ATT&CK Techniques 1 AI

T1083 · File and Directory Discovery

Affected Version Matrix 17

VendorProduct Version RangeStatus
Linux Linux aca56c298e2a6d20ab6308e203a8d37f2a7759d3< 3937c35493ee2847aaefcfa5460e94b7443eef49 affected
25714ad6bf5e98025579fa4c08ff2041a663910c< a37960df7eac3cc8094bd1ab84864e9e32c91345 affected
be9313f755a7bfa02230b15731d07074d5255ecb< 9a5f471ae380f9fcb9756d453c12ca1f8595a93c affected
07d9beb6e3c2e852e884113d6803ea4b3643ae38< 9443ddeb3754e9e382a396b50adc1961301713ce affected
effa453168a7eeb8a562ff4edc1dbf9067360a61< c0689e46be23160d925dca95dfc411f1a0462708 affected
74650c34f93044d3ab441235f161f9e1e761e96b affected
a126a8c3dd51519513141b4fc94fd4813bca2c0f affected
202d0e22fe512df0f1cb6253d40ce1058e373247 affected
… +9 more rows
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I. Basic Information for CVE-2022-48806

Vulnerability Information
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Vulnerability Title
eeprom: ee1004: limit i2c reads to I2C_SMBUS_BLOCK_MAX
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Vulnerability Title
Linux kernel 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Linux kernel是美国Linux基金会的开源操作系统Linux所使用的内核。 Linux kernel 存在安全漏洞，该漏洞源于eeprom模块中发现I2C读取限制问题。ee1004_eeprom_read函数没有正确限制一次读取的字节数。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Linux Linux aca56c298e2a6d20ab6308e203a8d37f2a7759d3 ~ 3937c35493ee2847aaefcfa5460e94b7443eef49 -
Linux Linux 5.4.174 ~ 5.4.180 -

II. Public POCs for CVE-2022-48806

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III. Intelligence Information for CVE-2022-48806

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Other References for CVE-2022-48806 (4)

Same Patch Batch · Linux · 2024-07-16 · 98 CVEs total

CVE-2022-48790 9.8 CRITICAL nvme: fix a possible use-after-free in controller reset during load
CVE-2022-48789 9.8 CRITICAL nvme-tcp: fix possible use-after-free in transport error_recovery work
CVE-2022-48788 9.8 CRITICAL nvme-rdma: fix possible use-after-free in transport error_recovery work
CVE-2022-48851 9.8 CRITICAL staging: gdm724x: fix use after free in gdm_lte_rx()
CVE-2022-48829 9.1 CRITICAL NFSD: Fix NFSv3 SETATTR/CREATE's handling of large file sizes
CVE-2022-48828 9.1 CRITICAL NFSD: Fix ia_size underflow
CVE-2022-48864 8.8 HIGH vdpa/mlx5: add validation for VIRTIO_NET_CTRL_MQ_VQ_PAIRS_SET command
CVE-2022-48830 8.8 HIGH can: isotp: fix potential CAN frame reception race in isotp_rcv()
CVE-2022-48782 8.8 HIGH mctp: fix use after free
CVE-2022-48785 8.8 HIGH ipv6: mcast: use rcu-safe version of ipv6_get_lladdr()
CVE-2022-48786 7.8 HIGH vsock: remove vsock from connected table when connect is interrupted by a signal
CVE-2022-48839 7.8 HIGH net/packet: fix slab-out-of-bounds access in packet_recvmsg()
CVE-2022-48779 7.8 HIGH net: mscc: ocelot: fix use-after-free in ocelot_vlan_del()
CVE-2022-48821 7.8 HIGH misc: fastrpc: avoid double fput() on failed usercopy
CVE-2022-48822 7.8 HIGH usb: f_fs: Fix use-after-free for epfile
CVE-2022-48816 7.8 HIGH SUNRPC: lock against ->sock changing during sysfs read
CVE-2022-48792 7.8 HIGH scsi: pm8001: Fix use-after-free for aborted SSP/STP sas_task
CVE-2022-48796 7.8 HIGH iommu: Fix potential use-after-free during probe
CVE-2022-48787 7.8 HIGH iwlwifi: fix use-after-free
CVE-2022-48791 7.8 HIGH scsi: pm8001: Fix use-after-free for aborted TMF sas_task

Showing top 20 of 98 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2022-48806

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