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VulnerabilityPublished Updated

CVE-2026-23023: Linux kernel · idpf: fix memory leak in idpf_vport_rel()

Affects Linux kernelSource CVE Database V5

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Not known to be exploited · fixed in f6242b354605faff263ca45882b148200915a3f6 : update Linux kernel when convenient.

Data as of 5 Nov 2026, 21:49 UTC

Severity
Unrated

Rated by Threat Radar · No CVSS score from NVD or the CNA

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, 2026-11-05.

Patch
Available – fixed in f6242b354605faff263ca45882b148200915a3f6, ec602a2a4071eb956d656ba968c58fee09f0622d, a4212d6732e3f674c6cc7d0b642f276d827e8f94

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 31 Jan 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq 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 5 Nov 2026.

What to do

Upgrade Linux kernel to f6242b354605faff263ca45882b148200915a3f6, ec602a2a4071eb956d656ba968c58fee09f0622d or a4212d6732e3f674c6cc7d0b642f276d827e8f94.

Affected software

ProductAffectedFixed in
LinuxLinuxAffected
  • ≥ 0fe45467a1041ea3657a7fa3a791c84c104fbd34, < f6242b354605faff263ca45882b148200915a3f6
Fixed in
  • f6242b354605faff263ca45882b148200915a3f6
LinuxLinuxAffected
  • ≥ 0fe45467a1041ea3657a7fa3a791c84c104fbd34, < ec602a2a4071eb956d656ba968c58fee09f0622d
Fixed in
  • ec602a2a4071eb956d656ba968c58fee09f0622d
LinuxLinuxAffected
  • ≥ 0fe45467a1041ea3657a7fa3a791c84c104fbd34, < a4212d6732e3f674c6cc7d0b642f276d827e8f94
Fixed in
  • a4212d6732e3f674c6cc7d0b642f276d827e8f94
LinuxLinuxAffected
  • =6.7
Fixed in–

Description

In the Linux kernel, the following vulnerability has been resolved: idpf: fix memory leak in idpf_vport_rel() Free vport->rx_ptype_lkup in idpf_vport_rel() to avoid leaking memory during a reset. Reported by kmemleak: unreferenced object 0xff450acac838a000 (size 4096): comm "kworker/u258:5", pid 7732, jiffies 4296830044 hex dump (first 32 bytes): 00 00 00 00 00 10 00 00 00 10 00 00 00 00 00 00 ................ 00 00 00 00 00 00 00 00 00 10 00 00 00 00 00 00 ................ backtrace (crc 3da81902): __kmalloc_cache_noprof+0x469/0x7a0 idpf_send_get_rx_ptype_msg+0x90/0x570 [idpf] idpf_init_task+0x1ec/0x8d0 [idpf] process_one_work+0x226/0x6d0 worker_thread+0x19e/0x340 kthread+0x10f/0x250 ret_from_fork+0x251/0x2b0 ret_from_fork_asm+0x1a/0x30

References

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