CVE-2026-53277
In the Linux kernel, the following vulnerability has been resolved: KVM: arm64: Take the SRCU lock for page table walks in fault injection
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Publicado: 25 jun 2026 · Última mod.: 15 jul 2026 · CWE-662 · CWE-820
0.1%EPSS · 30 días0.1%
2026-06-302026-07-16
In the Linux kernel, the following vulnerability has been resolved: KVM: arm64: Take the SRCU lock for page table walks in fault injection and AT emulation walk_s1() and kvm_walk_nested_s2() expect to be called while holding kvm->srcu to guard against memslot changes. While this is generally the case, __kvm_at_s12() and __kvm_find_s1_desc_level() call into the respective walkers without taking kvm->srcu. Fix by acquiring kvm->srcu prior to the table walk in both instances.
- git.kernel.orghttps://git.kernel.org/stable/c/97706097f9b851cfe55c3b00b083dfc2bcf542bc
- git.kernel.orghttps://git.kernel.org/stable/c/ec42b4ed1b072ea2d03f086061aa67bad6d8de39
- git.kernel.orghttps://git.kernel.org/stable/c/f2ca45b50d4216c9cc7ffabf50d9ad1932209251
- access.redhat.comhttps://access.redhat.com/security/cve/CVE-2026-53277
- bugzilla.redhat.comhttps://bugzilla.redhat.com/show_bug.cgi?id=2492725
- security.access.redhat.comhttps://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-53277.json
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CVE-2026-570295.3 MED8.8%
——3A Missing Synchronization vulnerability in the flow collector handler of Juniper Networks Junos OS Evolved on QFX Series allows an adjacent, unauthenticated attacker to cause a Denial-of-Service (DoS).
When the reachability of an sFlow collector changes, the corresponding next-hop entry is updated. If this update occurs simultaneously with the sFlow thread accessing the next-hop data (which is outside the attackers control), it causes the evo-pfemand process to crash, impacting all traffic forwarding until the automatic process restart has completed.
This issue affects Junos OS Evolved on QFX Series:
* all 23.2 versions,
* 23.4 versions before 23.4R2-S7-EVO,
* 24.2 versions before 24.2R2-S5-EVO,
* 24.4 versions before 24.4R2-S3-EVO,
* 25.2 versions before 25.2R2-EVO.3dCVE-2026-531537.8 ALT1.3%
——0In the Linux kernel, the following vulnerability has been resolved:
mm/list_lru: drain before clearing xarray entry on reparent
memcg_reparent_list_lrus() clears the dying memcg's xarray entry with
xas_store(&xas, NULL) before reparenting its per-node lists into the
parent. This opens a window where a concurrent list_lru_del() arriving
for the dying memcg sees xa_load() == NULL, walks to the parent in
lock_list_lru_of_memcg(), takes the parent's per-node lock, and calls
list_del_init() on an item still physically linked on the dying memcg's
list.
If another in-flight thread holds the dying memcg's per-node lock at the
same moment (another list_lru_del, or a list_lru_walk_one running an
isolate callback), both threads modify ->next/->prev pointers on the same
physical list under different locks. Adjacent items can corrupt each
other's links.
Fix it by reversing the order: reparent each per-node list and mark the
child's list lru dead and then clear the xarray entry. Any concurrent
list_lru op that finds the still-set xarray entry either takes the dying
memcg's per-node lock (synchronizing with the drain) or sees LONG_MIN and
walks to the parent, where the items now live.2d