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CVE-2025-68819— media: dvb-usb: dtv5100: fix out-of-bounds in dtv5100_i2c_msg()

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，该漏洞源于未对用户控制的rlen值进行边界检查，可能导致越界写入。

CVSS 7.8 · High EPSS 0.15% · P4

Possible ATT&CK Techniques 1 AI

T1203 · Exploitation for Client Execution

Affected Version Matrix 16

VendorProduct Version RangeStatus
Linux Linux 60688d5e6e6e2ae62f29762d1e3b2aec2dbd3817< c2c293ea7b61f12cdaad1e99a5b4efc58c88960a affected
60688d5e6e6e2ae62f29762d1e3b2aec2dbd3817< c2305b4c5fc15e20ac06c35738e0578eb4323750 affected
60688d5e6e6e2ae62f29762d1e3b2aec2dbd3817< 61f214a878e96e2a8750bf96a98f78c658dba60c affected
60688d5e6e6e2ae62f29762d1e3b2aec2dbd3817< 4a54d8fcb093761e4c56eb211cf4e39bf8401fa1 affected
60688d5e6e6e2ae62f29762d1e3b2aec2dbd3817< fe3e129ab49806aaaa3f22067ebc75c2dfbe4658 affected
60688d5e6e6e2ae62f29762d1e3b2aec2dbd3817< ac92151ff2494130d9fc686055d6bbb9743a673e affected
60688d5e6e6e2ae62f29762d1e3b2aec2dbd3817< b91e6aafe8d356086cc621bc03e35ba2299e4788 affected
2.6.28 affected
… +8 more rows
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I. Basic Information for CVE-2025-68819

Vulnerability Information
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Vulnerability Title
media: dvb-usb: dtv5100: fix out-of-bounds in dtv5100_i2c_msg()
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: media: dvb-usb: dtv5100: fix out-of-bounds in dtv5100_i2c_msg() rlen value is a user-controlled value, but dtv5100_i2c_msg() does not check the size of the rlen value. Therefore, if it is set to a value larger than sizeof(st->data), an out-of-bounds vuln occurs for st->data. Therefore, we need to add proper range checking to prevent this vuln.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
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，该漏洞源于未对用户控制的rlen值进行边界检查，可能导致越界写入。
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 60688d5e6e6e2ae62f29762d1e3b2aec2dbd3817 ~ c2c293ea7b61f12cdaad1e99a5b4efc58c88960a -
Linux Linux 2.6.28 -

II. Public POCs for CVE-2025-68819

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III. Intelligence Information for CVE-2025-68819

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Same Patch Batch · Linux · 2026-01-13 · 93 CVEs total

CVE-2025-68811 9.8 CRITICAL svcrdma: use rc_pageoff for memcpy byte offset
CVE-2025-68794 9.8 CRITICAL iomap: adjust read range correctly for non-block-aligned positions
CVE-2025-68817 9.8 CRITICAL ksmbd: fix use-after-free in ksmbd_tree_connect_put under concurrency
CVE-2025-68775 9.8 CRITICAL net/handshake: duplicate handshake cancellations leak socket
CVE-2025-71068 9.8 CRITICAL svcrdma: bound check rq_pages index in inline path
CVE-2025-68809 9.1 CRITICAL ksmbd: vfs: fix race on m_flags in vfs_cache
CVE-2025-71095 9.1 CRITICAL net: stmmac: fix the crash issue for zero copy XDP_TX action
CVE-2025-71093 9.1 CRITICAL e1000: fix OOB in e1000_tbi_should_accept()
CVE-2025-68818 8.8 HIGH scsi: Revert "scsi: qla2xxx: Perform lockless command completion in abort path"
CVE-2025-71072 8.2 HIGH shmem: fix recovery on rename failures
CVE-2025-68799 8.1 HIGH caif: fix integer underflow in cffrml_receive()
CVE-2025-68803 8.0 HIGH NFSD: NFSv4 file creation neglects setting ACL
CVE-2025-68808 7.8 HIGH media: vidtv: initialize local pointers upon transfer of memory ownership
CVE-2025-68822 7.8 HIGH Input: alps - fix use-after-free bugs caused by dev3_register_work
CVE-2025-71092 7.8 HIGH RDMA/bnxt_re: Fix OOB write in bnxt_re_copy_err_stats()
CVE-2025-68792 7.8 HIGH tpm2-sessions: Fix out of range indexing in name_size
CVE-2025-68793 7.8 HIGH drm/amdgpu: fix a job->pasid access race in gpu recovery
CVE-2025-71099 7.8 HIGH drm/xe/oa: Fix potential UAF in xe_oa_add_config_ioctl()
CVE-2025-68805 7.8 HIGH fuse: fix io-uring list corruption for terminated non-committed requests
CVE-2025-68795 7.8 HIGH ethtool: Avoid overflowing userspace buffer on stats query

Showing top 20 of 93 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2025-68819

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