CVE-2026-81007ipmi: ipmb: validate write message length
Updated under an hour ago ()
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No exploitation reported and no EPSS estimate yet.
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In the Linux kernel, the following vulnerability has been resolved: ipmi: ipmb: validate write message length ipmb_write() read message fields before validating the length byte. A zero or short write can read uninitialized stack bytes. A length smaller than the SMBus header underflows the block write length. Require a non-empty buffer and the minimum IPMB request length. Also require the length byte plus payload before parsing the message.
- CVSS
- 7.1 HIGH (v3.1, CNA)CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
- Weakness (CWE)
- Not given
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Linux
- NVD analysis
- Received
- Record last updated
- Sep 14, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Linux Linux linux:linux (from the name) | from 51bd6f291583684f495ea498984dfc22049d7fd2 before 8990c7f6bfc1e7689b7012a7d4d0efb9f07a9c89; from 51bd6f291583684f495ea498984dfc22049d7fd2 before 94f8d20153e348c79bc14dc25f873470518892da; from 51bd6f291583684f495ea498984dfc22049d7fd2 before e527cd4e80066e1ed070fdc7c705bde340cdcc62; 51bd6f291583684f495ea498984dfc22049d7fd2 builds before 7d66d54b974cff0a959e188af844d2d110422767; from 51bd6f291583684f495ea498984dfc22049d7fd2 before 60939bcda6f3f104ef456fdbf3cc5733c0720fb1; from 51bd6f291583684f495ea498984dfc22049d7fd2 before 5719431ca2b5fa26560bb38f6202f8b97fa3bbb0; from 51bd6f291583684f495ea498984dfc22049d7fd2 before a84c6e3d188f2c6e674910929eb790634299d6d5; from 51bd6f291583684f495ea498984dfc22049d7fd2 before 53637506884dbd5c91a89b1a3547d99d80f8ed2c | CNA record |
References
- https://git.kernel.org/stable/c/8990c7f6bfc1e7689b7012a7d4d0efb9f07a9c89
- https://git.kernel.org/stable/c/94f8d20153e348c79bc14dc25f873470518892da
- https://git.kernel.org/stable/c/e527cd4e80066e1ed070fdc7c705bde340cdcc62
- https://git.kernel.org/stable/c/7d66d54b974cff0a959e188af844d2d110422767
- https://git.kernel.org/stable/c/60939bcda6f3f104ef456fdbf3cc5733c0720fb1
- https://git.kernel.org/stable/c/5719431ca2b5fa26560bb38f6202f8b97fa3bbb0
- https://git.kernel.org/stable/c/a84c6e3d188f2c6e674910929eb790634299d6d5
- https://git.kernel.org/stable/c/53637506884dbd5c91a89b1a3547d99d80f8ed2c
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.