CVE-2026-98167: Linux kernel · smb: client: fix server->total_read for compound encrypted PDUs
Affects Linux kernelSource CVE Database V5
Not known to be exploited · fixed in f73726b83e4756fdaa099e1bc1143293bd57ad79 : patch Linux kernel soon.
Data as of 26 Oct 2026, 12:55 UTC
Rated High by Threat Radar's AI analysis · CVSS not yet scored by NVD
- EPSS
- 0.2% chance of exploitation in 30 days – higher than 12% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
- Patch
- Available – fixed in f73726b83e4756fdaa099e1bc1143293bd57ad79, ebb8a075fdc7af3d196a4f158a0e18dbc394c0e3, e78fc1d240b27349b45a0f1c3e3c2c401d7e230d +3
Exploitation evidence
Disclosed: evidence found.
CVE published 6 Oct 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 26 Oct 2026.
What to do
Upgrade to a fixed release listed under Affected software.
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| LinuxLinux | Affected
| Fixed in
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| LinuxLinux | Affected
| Fixed in
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| LinuxLinux | Affected
| Fixed in
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| LinuxLinux | Affected
| Fixed in
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| LinuxLinux | Affected
| Fixed in
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| LinuxLinux | Affected
| Fixed in
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AI-suggested
A fix is available and has been applied in the Linux kernel. Users should update to a fixed kernel version containing the relevant patches identified by the commit hashes provided. No additional mitigation steps are indicated.
Description
A vulnerability in the Linux kernel SMB client was fixed involving incorrect handling of server->total_read for compound encrypted PDUs. The flaw allowed truncated non-last sub-PDUs to bypass length validation, leading to out-of-bounds reads.
References
- git.kernel.org/stable/c/8703539d22fdbc13dd2db090ee199c3a427b8ea0 (opens in a new tab)
- git.kernel.org/stable/c/e78fc1d240b27349b45a0f1c3e3c2c401d7e230d (opens in a new tab)
- git.kernel.org/stable/c/a46eb242e9eef3a3897d166748b23303c516e870 (opens in a new tab)
- git.kernel.org/stable/c/ebb8a075fdc7af3d196a4f158a0e18dbc394c0e3 (opens in a new tab)
- git.kernel.org/stable/c/282b72f9a7ef31296c48366db4128882999cc048 (opens in a new tab)
- git.kernel.org/stable/c/f73726b83e4756fdaa099e1bc1143293bd57ad79 (opens in a new tab)