CVE-2026-53083: Linux kernel · bpf: Fix RCU stall in bpf_fd_array_map_clear()
Affects Linux kernelSource CVE Database V5
Not known to be exploited · fixed in e1ed678855e315f90c70c1723e94157a9a82e660 : update Linux kernel when convenient.
Data as of 30 Oct 2026, 12:49 UTC
Rated Medium by Threat Radar's AI analysis · No CVSS score from NVD or the CNA
Thin evidence
One scorer or none- Patch
- Available – fixed in e1ed678855e315f90c70c1723e94157a9a82e660, b1f7158a86f3cbac4d5a32beb55ca0f8027d44cd, 4406942e65ca128c56c67443832988873c21d2e9 +3
Exploitation evidence
Disclosed: evidence found.
CVE published 24 Jun 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 30 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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Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.
AI-suggested
A fix is available in the Linux kernel as indicated by the fixed commit versions. Users should update to a fixed kernel version that includes the patch adding cond_resched() in bpf_fd_array_map_clear().
Description
A vulnerability in the Linux kernel's BPF subsystem was fixed by adding a missing cond_resched() call in the bpf_fd_array_map_clear() function. Without this yield point, loops clearing PROG_ARRAY maps with many entries could cause RCU stalls under load, impacting kernel responsiveness.
References
- git.kernel.org/stable/c/419878a48085e6d5c2fcc4912eeaac2f8abf36ed (opens in a new tab)
- git.kernel.org/stable/c/b1f7158a86f3cbac4d5a32beb55ca0f8027d44cd (opens in a new tab)
- git.kernel.org/stable/c/71ddb7defc442ab38c53123c384fedbfd8410a15 (opens in a new tab)
- git.kernel.org/stable/c/e1ed678855e315f90c70c1723e94157a9a82e660 (opens in a new tab)
- git.kernel.org/stable/c/67bdb4b0d26f2d6bbf1798a925ef5a3b9ed7357a (opens in a new tab)
- git.kernel.org/stable/c/4406942e65ca128c56c67443832988873c21d2e9 (opens in a new tab)