CVE-2026-43120

EPSS 0.12%
Veröffentlicht 06.05.2026 07:40:43
Zuletzt bearbeitet 12.05.2026 21:37:37
Quelle 416baaa9-dc9f-4396-8d5f-8c081f
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RDMA/irdma: Fix double free related to rereg_user_mr

In the Linux kernel, the following vulnerability has been resolved:

RDMA/irdma: Fix double free related to rereg_user_mr

If IB_MR_REREG_TRANS is set during rereg_user_mr, the
umem will be released and a new one will be allocated
in irdma_rereg_mr_trans. If any step of irdma_rereg_mr_trans
fails after the new umem is allocated, it releases the umem,
but does not set iwmr->region to NULL. The problem is that
this failure is propagated to the user, who will then call
ibv_dereg_mr (as they should). Then, the dereg_mr path will
see a non-NULL umem and attempt to call ib_umem_release again.

Fix this by setting iwmr->region to NULL after ib_umem_release.

Fixed: 5ac388db27c4 ("RDMA/irdma: Add support to re-register a memory region")

Betroffene Produkte Warnungen 0 Metriken 3 CWE 1 Referenzen 8

NVD 9 VulnDex Vulnerability Enrichment 13

Daten sind bereitgestellt durch National Vulnerability Database (NVD)

Linux ≫ Linux Kernel Version >= 6.6.120 < 6.6.136

Linux ≫ Linux Kernel Version >= 6.7 < 6.12.83

Linux ≫ Linux Kernel Version >= 6.13 < 6.18.24

Linux ≫ Linux Kernel Version >= 6.19 < 6.19.14

Linux ≫ Linux Kernel Version7.0 Updaterc1

Linux ≫ Linux Kernel Version7.0 Updaterc2

Linux ≫ Linux Kernel Version7.0 Updaterc3

Linux ≫ Linux Kernel Version7.0 Updaterc4

Linux ≫ Linux Kernel Version7.0 Updaterc5

VulnDex Vulnerability Enrichment

Diese Information steht angemeldeten Benutzern zur Verfügung.

Zu dieser CVE wurde keine Warnung gefunden.

EPSS Metriken
Typ	Quelle	Score	Percentile
EPSS	FIRST.org	0.12%	0.023

CVSS Metriken
Quelle	Base Score	Exploit Score	Impact Score	Vector String
nvd@nist.gov	7.8	1.8	5.9	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
416baaa9-dc9f-4396-8d5f-8c081fb06d67	7.8	1.8	5.9	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H