Bug 2435663 (CVE-2026-23023) - CVE-2026-23023 kernel: Linux kernel: Memory leak in idpf driver can lead to denial of service
Summary: CVE-2026-23023 kernel: Linux kernel: Memory leak in idpf driver can lead to d...
Keywords:
Status: NEW
Alias: CVE-2026-23023
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-01-31 12:02 UTC by OSIDB Bzimport
Modified: 2026-02-02 14:39 UTC (History)
0 users

Fixed In Version:
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Description OSIDB Bzimport 2026-01-31 12:02:24 UTC 
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
Comment 1 Alexander B 2026-02-02 09:26:01 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2026013136-CVE-2026-23023-0601@gregkh/T
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