CVE-2026-23038: Linux kernel · pnfs/flexfiles: Fix memory leak in nfs4_ff_alloc_deviceid_node()
Affects Linux kernelSource CVE Database V5
Not known to be exploited · fixed in ed5d3f2f6885eb99f729e6ffd946e3aa058bd3eb : update Linux kernel when convenient.
Data as of 26 Oct 2026, 12:55 UTC
Rated by Threat Radar · No CVSS score from NVD or the CNA
- EPSS
- 0.2% chance of exploitation in 30 days – higher than 20% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
- 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, 2026-06-16.
- Patch
- Available – fixed in ed5d3f2f6885eb99f729e6ffd946e3aa058bd3eb, e2dde5dafb80f1af4028ed10ad255f42af71c784, 869862056e100973e76ce9f5f1b01837771b7722 +4
Exploitation evidence
Disclosed: evidence found.
CVE published 31 Jan 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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Description
In the Linux kernel, the following vulnerability has been resolved: pnfs/flexfiles: Fix memory leak in nfs4_ff_alloc_deviceid_node() In nfs4_ff_alloc_deviceid_node(), if the allocation for ds_versions fails, the function jumps to the out_scratch label without freeing the already allocated dsaddrs list, leading to a memory leak. Fix this by jumping to the out_err_drain_dsaddrs label, which properly frees the dsaddrs list before cleaning up other resources.
References
- git.kernel.org/stable/c/e2dde5dafb80f1af4028ed10ad255f42af71c784 (opens in a new tab)
- git.kernel.org/stable/c/27c90d8ed81e7a289c9fe41b5e31d8bb609a3385 (opens in a new tab)
- git.kernel.org/stable/c/34b9dd179818ff7af2b36410985fd8166573c62d (opens in a new tab)
- git.kernel.org/stable/c/869862056e100973e76ce9f5f1b01837771b7722 (opens in a new tab)
- git.kernel.org/stable/c/86da7efd12295a7e2b4abde5e5984c821edd938f (opens in a new tab)
- git.kernel.org/stable/c/ed5d3f2f6885eb99f729e6ffd946e3aa058bd3eb (opens in a new tab)
- git.kernel.org/stable/c/0c728083654f0066f5e10a1d2b0bd0907af19a58 (opens in a new tab)
- cert-portal.siemens.com/productcert/html/ssa-253495.html (opens in a new tab)
- cert-portal.siemens.com/productcert/html/ssa-019113.html (opens in a new tab)
- cert-portal.siemens.com/productcert/html/ssa-457936.html (opens in a new tab)