serial: 8250_mid: Fix NULL function pointer dereference on DNV/ICX-D/SNR platforms
In the Linux kernel, the following vulnerability has been resolved: serial: 8250_mid: Fix NULL function pointer dereference on DNV/ICX-D/SNR platforms Commit b1b4efea05a5 ("serial: 8250_mid: Disable DMA for selected platforms") replaced the dnv_board setup and exit callbacks with PTR_IF(false, ...), which evaluates to NULL. However, the three call sites in mid8250_probe() and mid8250_remove() unconditionally dereference these function pointers without NULL checks, causing a NULL pointer dereference (kernel oops) on any Denverton (DNV), Ice Lake Xeon D (ICX-D/CDF), or Snowridge (SNR) platform. Fix this by adding the missing NULL checks before calling the setup and exit callbacks.
CVE-2026-68434
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: osv:CVE-2026-68434
Kernel
Source reference: /affected/1/package/name
- Affected versions
- Not stated in this record
- Fixed versions
- 5.10.266
Source reference:
/affected/1/ranges5.15.217Source reference:
/affected/1/ranges6.1.183Source reference:
/affected/1/ranges6.6.148Source reference:
/affected/1/ranges6.12.101Source reference:
/affected/1/ranges6.18.42Source reference:
/affected/1/ranges7.1.6Source reference:
/affected/1/ranges - Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"ranges": [
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"type": "GIT",
"events": [
{
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},
{
"fixed": "bdaa8871b53fe9b1730ef64dda2fcd662fd83339"
}
]
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"type": "GIT",
"events": [
{
"introduced": "c7d190bb07bf4e3b217c69370e94d1b4c80a40ad"
},
{
"fixed": "f85a42fb90399dedcf81c146d09c07e4548b1e8c"
}
]
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"type": "GIT",
"events": [
{
"introduced": "0b3ed3fa227ba778cabed96e7f8d84addb8bdf9c"
},
{
"fixed": "4ea933a36a14bec19b71025cdd8407bafbd67ec1"
}
]
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"type": "GIT",
"events": [
{
"introduced": "587afb06a5d1dc5092d3d9e9ac3ccf22094d50c6"
},
{
"fixed": "1096397c31f6bffa95e77bdd18fbca085be83e10"
}
]
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"type": "GIT",
"events": [
{
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},
{
"fixed": "600dcd548fb2b00a69f447684f52ba45d5a3540e"
}
]
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"type": "GIT",
"events": [
{
"introduced": "1cd54e217c6e2cdb794a897b2f855e13ffcee586"
},
{
"fixed": "b2a3eeb57ba24f8a0e34a69d40adcc63e5b9ca56"
}
]
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"type": "GIT",
"events": [
{
"introduced": "9690e8a342632344984af72bc56b7a1fba61e6cb"
},
{
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}
]
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"type": "GIT",
"events": [
{
"introduced": "b1b4efea05a56c0995e4702a86d6624b4fdff32f"
},
{
"fixed": "7fb13fd7e9a59a37cd911efff83abe19e3ee029d"
}
]
}
],
"versions": [
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"v5.10.264",
"v5.10.263",
"v5.10.262",
"v5.10.261",
"v5.15.216",
"v5.15.215",
"v5.15.214",
"v5.15.213",
"v5.15.212",
"v6.1.182",
"v6.1.181",
"v6.1.180",
"v6.1.179",
"v6.1.178",
"v6.6.147",
"v6.6.146",
"v6.6.145",
"v6.12.100",
"v6.12.99",
"v6.12.98",
"v6.12.97",
"v6.12.96",
"v6.18.41",
"v6.18.40",
"v6.18.39",
"v7.1.5",
"v7.1.4"
],
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-68434.json"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "5.10.261"
},
{
"fixed": "5.10.266"
}
]
},
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "5.15.212"
},
{
"fixed": "5.15.217"
}
]
},
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "6.1.178"
},
{
"fixed": "6.1.183"
}
]
},
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "6.6.145"
},
{
"fixed": "6.6.148"
}
]
},
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "6.12.96"
},
{
"fixed": "6.12.101"
}
]
},
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "6.18.39"
},
{
"fixed": "6.18.42"
}
]
},
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "7.1.4"
},
{
"fixed": "7.1.6"
}
]
}
],
"package": {
"name": "Kernel",
"ecosystem": "Linux"
},
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-68434.json"
}
}
]- Related CVEs
- CVE-2026-68434
Source reference:
/id
Publisher severity
No explicit severity was provided.
- Event
- #50819 · Revision 1
- Added to Heist Feed
- Publisher date