CVE-2026-74382: Linux kernel · net/sched: cls_bpf: prevent unbounded recursion in offload rollback
Affects Linux kernelSource CVE Database V5
Not known to be exploited · fixed in e2d3b7bab3748c811dc5750ce9a8d62bc7f90ed7 : patch Linux kernel soon.
Data as of 6 Nov 2026, 18:03 UTC
Rated High by Threat Radar's AI analysis · CVSS not yet scored by NVD
Thin evidence
One scorer or none- CISA SSVC
- Exploitation
- No evidence of active exploitation and no public proof of concept
- Automatable
- Attackers cannot reliably automate steps 1–4 of the kill chain
- Technical impact
- Limited control over the software or limited information exposure
CISA SSVC assessment, 2026-11-06.
- Patch
- Available – fixed in e2d3b7bab3748c811dc5750ce9a8d62bc7f90ed7, a018f208ab7512380bd4cf670064d48cba00a1b1, 33373e1f378a501bc51aa73312f74295c84e3101 +5
Exploitation evidence
Disclosed: evidence found.
CVE published 15 Aug 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: 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 6 Nov 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 patches identified by the provided commit hashes. No additional mitigation steps are required beyond applying the official fix.
Description
A stack overflow vulnerability in the Linux kernel's cls_bpf_offload_cmd() function could cause unbounded recursion during offload rollback when tc_setup_cb_replace() fails repeatedly. This issue affects version 4.15 and was fixed by preventing recursive rollback calls.
References
- git.kernel.org/stable/c/a018f208ab7512380bd4cf670064d48cba00a1b1 (opens in a new tab)
- git.kernel.org/stable/c/33373e1f378a501bc51aa73312f74295c84e3101 (opens in a new tab)
- git.kernel.org/stable/c/e2d3b7bab3748c811dc5750ce9a8d62bc7f90ed7 (opens in a new tab)
- git.kernel.org/stable/c/4a76953c3ed043797e81529b9395e9ca6f4c7609 (opens in a new tab)
- git.kernel.org/stable/c/1387f252a242a51bfbb6eace29c8f8db21b457da (opens in a new tab)
- git.kernel.org/stable/c/10753da2d659dd425a6e620f47f86852d604f67f (opens in a new tab)
- git.kernel.org/stable/c/3fa6fb5d771c992ebedbfa7331c6bcc6f33f89b7 (opens in a new tab)
- git.kernel.org/stable/c/27db54b90bcc7c37867fe664107fa25ea6a116e4 (opens in a new tab)