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This CVE record has been updated after NVD enrichment efforts were completed. Enrichment data supplied by the NVD may require amendment due to these changes.
Description
In the Linux kernel, the following vulnerability has been resolved:
KVM: arm64: vgic-its: Drop the translation cache reference only for the erased entry
vgic_its_invalidate_cache() walks the per-ITS translation cache with
xa_for_each() and drops the cache's reference on each entry with
vgic_put_irq(). It puts the iterated pointer, though, rather than the
value returned by xa_erase().
The function is called from contexts that do not exclude one another: the
ITS command handlers hold its_lock, the GITS_CTLR write path holds
cmd_lock, and the path that clears EnableLPIs in a redistributor's
GICR_CTLR holds neither. Two or more of them can drain the same cache
concurrently, and if each one observes the same entry, erases it and then
puts it, the single reference the cache holds on that entry is dropped
more than once. The entry can then be freed while an ITE still maps it.
xa_erase() is atomic and returns the previous entry, so put only the entry
that this context actually removed. The cache reference is then dropped
exactly once per entry even when the invalidations run concurrently, and
the behavior is unchanged when only one context runs.
Metrics
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Title: el kernel de Linux, Description: En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta:
KVM: arm64: vgic-its: Eliminar la referencia de la caché de traducción solo para la entrada borrada
vgic_its_invalidate_cache() recorre la caché de traducción por ITS con xa_for_each() y elimina la referencia de la caché en cada entrada con vgic_put_irq(). Sin embargo, libera el puntero iterado, en lugar del valor devuelto por xa_erase().
La función es llamada desde contextos que no se excluyen mutuamente: los manejadores de comandos ITS mantienen its_lock, la ruta de escritura de GITS_CTLR mantiene cmd_lock, y la ruta que borra EnableLPIs en el GICR_CTLR de un redistribuidor no mantiene ninguno. Dos o más de ellos pueden vaciar la misma caché concurrentemente, y si cada uno observa la misma entrada, la borra y luego la libera, la única referencia que la caché mantiene sobre esa entrada se elimina más de una vez. La entrada puede entonces ser liberada mientras un ITE todavía la mapea.
xa_erase() es atómica y devuelve la entrada anterior, así que libera solo la entrada que este contexto realmente eliminó. La referencia de la caché se elimina entonces exactamente una vez por entrada incluso cuando las invalidaciones se ejecutan concurrentemente, y el comportamiento no cambia cuando solo se ejecuta un contexto.
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Initial Analysis by NIST7/08/2026 10:50:38 AM
Action
Type
Old Value
New Value
Added
CWE
NVD-CWE-Other
Added
CPE Configuration
OR
*cpe:2.3:o:linux:linux_kernel:7.1:rc1:*:*:*:*:*:*
*cpe:2.3:o:linux:linux_kernel:7.1:rc2:*:*:*:*:*:*
*cpe:2.3:o:linux:linux_kernel:7.1:rc3:*:*:*:*:*:*
*cpe:2.3:o:linux:linux_kernel:7.1:rc4:*:*:*:*:*:*
*cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 6.13 up to (excluding) 6.18.35
*cpe:2.3:o:linux:linux_kernel:7.1:rc5:*:*:*:*:*:*
*cpe:2.3:o:linux:linux_kernel:7.1:rc6:*:*:*:*:*:*
*cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 6.10 up to (excluding) 6.12.93
*cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 6.19 up to (excluding) 7.0.12
redhat-SADP: https://access.redhat.com/errata/RHSA-2026:34911 Types: Third Party Advisory
Added
Reference Type
redhat-SADP: https://access.redhat.com/errata/RHSA-2026:36018 Types: Third Party Advisory
Added
Reference Type
redhat-SADP: https://access.redhat.com/security/cve/CVE-2026-46316 Types: Third Party Advisory
Added
Reference Type
redhat-SADP: https://bugzilla.redhat.com/show_bug.cgi?id=2486982 Types: Third Party Advisory
Added
Reference Type
redhat-SADP: https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-46316.json Types: Third Party Advisory
CVE Modified by redhat-SADP7/07/2026 8:16:54 AM
Action
Type
Old Value
New Value
Added
Reference
https://access.redhat.com/errata/RHSA-2026:36018
Changed
Affected
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CVE Modified by redhat-SADP7/03/2026 9:17:22 AM
Action
Type
Old Value
New Value
Added
Reference
https://access.redhat.com/errata/RHSA-2026:34911
Changed
Affected
[{"vendor":"Red Hat","product":"Red Hat Enterprise Linux 10","defaultStatus":"affected","cpes":["cpe:/o:redhat:enterprise_linux:10"]},{"vendor":"Red Hat","product":"Red Hat Enterprise Linux 9","defaultStatus":"affected","cpes":["cpe:/o:redhat:enterprise_linux:9"]},{"vendor":"Red Hat","product":"Red Hat Enterprise Linux 6","defaultStatus":"unaffected","cpes":["cpe:/o:redhat:enterprise_linux:6"]},{"vendor":"Red Hat","product":"Red Hat Enterprise Linux 7","defaultStatus":"unaffected","cpes":["cpe:/o:redhat:enterprise_linux:7"]},{"vendor":"Red Hat","product":"Red Hat Enterprise Linux 8","defaultStatus":"unaffected","cpes":["cpe:/o:redhat:enterprise_linux:8"]}]
[{"vendor":"Red Hat","product":"Red Hat Enterprise Linux AppStream (v. 10)","defaultStatus":"affected","cpes":["cpe:/o:redhat:enterprise_linux:10.2"]},{"vendor":"Red Hat","product":"Red Hat Enterprise Linux BaseOS (v. 10)","defaultStatus":"affected","cpes":["cpe:/o:redhat:enterprise_linux:10.2"]},{"vendor":"Red Hat","product":"Red Hat Enterprise Linux CodeReady Linux Builder (v. 10)","defaultStatus":"affected","cpes":["cpe:/o:redhat:enterprise_linux:10.2"]},{"vendor":"Red Hat","product":"Red Hat Enterprise Linux Real Time for NFV (v. 10)","defaultStatus":"affected","cpes":["cpe:/o:redhat:enterprise_linux:10.2"]},{"vendor":"Red Hat","product":"Red Hat Enterprise Linux Real Time (v. 10)","defaultStatus":"affected","cpes":["cpe:/o:redhat:enterprise_linux:10.2"]},{"vendor":"Red Hat","product":"Red Hat Enterprise Linux 9","defaultStatus":"affected","cpes":["cpe:/o:redhat:enterprise_linux:9"]},{"vendor":"Red Hat","product":"Red Hat Enterprise Linux 6","defaultStatus":"unaffected","cpes":["cpe:/o:redhat:enterprise_linux:6"]},{"vendor":"Red Hat","product":"Red Hat Enterprise Linux 7","defaultStatus":"unaffected","cpes":["cpe:/o:redhat:enterprise_linux:7"]},{"vendor":"Red Hat","product":"Red Hat Enterprise Linux 8","defaultStatus":"unaffected","cpes":["cpe:/o:redhat:enterprise_linux:8"]}]
[{"vendor":"Red Hat","product":"Red Hat Enterprise Linux 10","defaultStatus":"affected","cpes":["cpe:/o:redhat:enterprise_linux:10"]},{"vendor":"Red Hat","product":"Red Hat Enterprise Linux 9","defaultStatus":"affected","cpes":["cpe:/o:redhat:enterprise_linux:9"]},{"vendor":"Red Hat","product":"Red Hat Enterprise Linux 6","defaultStatus":"unaffected","cpes":["cpe:/o:redhat:enterprise_linux:6"]},{"vendor":"Red Hat","product":"Red Hat Enterprise Linux 7","defaultStatus":"unaffected","cpes":["cpe:/o:redhat:enterprise_linux:7"]},{"vendor":"Red Hat","product":"Red Hat Enterprise Linux 8","defaultStatus":"unaffected","cpes":["cpe:/o:redhat:enterprise_linux:8"]}]
New CVE Received from kernel.org6/09/2026 9:16:36 AM
Action
Type
Old Value
New Value
Added
Description
In the Linux kernel, the following vulnerability has been resolved:
KVM: arm64: vgic-its: Drop the translation cache reference only for the erased entry
vgic_its_invalidate_cache() walks the per-ITS translation cache with
xa_for_each() and drops the cache's reference on each entry with
vgic_put_irq(). It puts the iterated pointer, though, rather than the
value returned by xa_erase().
The function is called from contexts that do not exclude one another: the
ITS command handlers hold its_lock, the GITS_CTLR write path holds
cmd_lock, and the path that clears EnableLPIs in a redistributor's
GICR_CTLR holds neither. Two or more of them can drain the same cache
concurrently, and if each one observes the same entry, erases it and then
puts it, the single reference the cache holds on that entry is dropped
more than once. The entry can then be freed while an ITE still maps it.
xa_erase() is atomic and returns the previous entry, so put only the entry
that this context actually removed. The cache reference is then dropped
exactly once per entry even when the invalidations run concurrently, and
the behavior is unchanged when only one context runs.
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