UBUNTU-CVE-2026-52945

In the Linux kernel, the following vulnerability has been resolved: Revert "wireguard: device: enable threaded NAPI" This reverts commit 933466fc50a8e4eb167acbd0d8ec96a078462e9c which is commit db9ae3b6b43c79b1ba87eea849fd65efa05b4b2e upstream. We have had three independent production user report...

UBUNTU-CVE-2026-52983

In the Linux kernel, the following vulnerability has been resolved: net: airoha: fix BQL imbalance in TX path Fix a possible BQL imbalance in airohadevxmit, where inflight packets are accounted only for the AIROHANUMTXRING netdev TX queues. The queue index is computed as: qid =...

UBUNTU-CVE-2026-53084

In the Linux kernel, the following vulnerability has been resolved: bpf: return VMA snapshot from taskvma iterator Holding the per-VMA lock across the BPF program body creates a lock ordering problem when helpers acquire locks that depend on mmaplock: vmlock - irwsem - mmaplock - vmlock Snapshot...

UBUNTU-CVE-2026-53022

In the Linux kernel, the following vulnerability has been resolved: platform/x86: dell-wmi-sysman: bound enumeration string aggregation populateenumdata aggregates firmware-provided value-modifier and possible-value strings into fixed 512-byte struct members. The current code bounds each individu...

UBUNTU-CVE-2026-52952

In the Linux kernel, the following vulnerability has been resolved: iommu: Fix WARNON in iommugroupsetdomainnofail due to reset In iommugroupsetdomaininternal, concurrent domain attachments are rejected when any device in the group is recovering. This is necessary to fence concurrent attachments ...

UBUNTU-CVE-2026-52996

In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix durable fd leak on ClientGUID mismatch in durable v2 open ksmbdlookupfdcguid returns a ksmbdfile with its refcount incremented via ksmbdfpget. parsedurablehandlecontext in the DURABLEREQV2 case properly releases this...

UBUNTU-CVE-2026-52973

In the Linux kernel, the following vulnerability has been resolved: futex: Drop CLONETHREAD requirement for private default hash alloc Currently needfutexhashallocatedefault depends on strict pthread semantics, abusing CLONETHREAD. This breaks the non-concurrency assumptions when doing the...

UBUNTU-CVE-2026-53048

In the Linux kernel, the following vulnerability has been resolved: gfs2: prevent NULL pointer dereference during unmount When flushing out outstanding glock work during an unmount, gfs2logflush can be called when sdp-sdjdesc has already been deallocated and sdp-sdjdesc is NULL. Commit 35264909e9...

UBUNTU-CVE-2026-53091

In the Linux kernel, the following vulnerability has been resolved: net: pull headers in qdiscpktlensegsinit Most ndostartxmit methods expects headers of gso packets to be already in skb-head. net/core/tso.c users are particularly at risk, because tsobuildhdr does a memcpyhdr, skb-data, hdrlen;...

UBUNTU-CVE-2026-53041

In the Linux kernel, the following vulnerability has been resolved: ocfs2: fix listxattr handling when the buffer is full BUG If an OCFS2 inode has both inline and block-based xattrs, listxattr can return a size larger than the caller's buffer when the inline names consume that buffer exactly...

UBUNTU-CVE-2026-52995

In the Linux kernel, the following vulnerability has been resolved: net/rds: zero per-item info buffer before handing it to visitors rdsforeachconninfo and rdswalkconnpathinfo both hand a caller-allocated on-stack u64 buffer to a per-connection visitor and then copy the full itemlen bytes back to...

UBUNTU-CVE-2026-53111

In the Linux kernel, the following vulnerability has been resolved: bpf: testrun: Fix the null pointer dereference issue in bpflwtxmitpushencap The bpflwtxmitpushencap helper needs to access skbdstskb-dev to calculate the needed headroom: err = skbcowheadskb, len + LLRESERVEDSPACEskbdstskb-dev; B...

UBUNTU-CVE-2026-53034

In the Linux kernel, the following vulnerability has been resolved: bpf, sockmap: Fix afunix null-ptr-deref in proto update unixstreamconnect sets skstate WRITEONCEsk-skstate, TCPESTABLISHED before it assigns a peer unixpeersk = newsk. skstate == TCPESTABLISHED makes sockmapskstateallowed believe...

UBUNTU-CVE-2026-53065

In the Linux kernel, the following vulnerability has been resolved: ASoC: sti: use managed regmapfield allocations The regmapfield objects allocated at player init are never freed and may leak resources if the driver is removed. Switch to devmregmapfieldalloc to automatically limit the lifetime o...

CVE-2026-53130

In the Linux kernel, the following vulnerability has been resolved: fs/omfs: reject ssysblocksize smaller than OMFSDIRSTART omfsfillsuper rejects oversized ssysblocksize values PAGESIZE, but it does not reject values smaller than OMFSDIRSTART 0x1b8 = 440. Later, omfsmakeempty uses sbi-ssysblocksi...

CVE-2026-53114

In the Linux kernel, the following vulnerability has been resolved: perf/amd/ibs: Avoid calling perfallowkernel from the IBS NMI handler Calling perfallowkernel from the NMI context is unsafe and could be fatal. Capture the permission at event-initialization time by storing it in event-hw.flags,...

CVE-2026-53100

In the Linux kernel, the following vulnerability has been resolved: wifi: mt76: fix deadlock in remain-on-channel mt76remainonchannel and mt76roccomplete call mt76setchannel while already holding dev-mutex. Since mt76setchannel also acquires dev-mutex, this results in a deadlock. Use mt76setchann...

CVE-2026-53092

In the Linux kernel, the following vulnerability has been resolved: bpf: Fix linked reg delta tracking when srcreg == dstreg Consider the case of rX += rX where srcreg and dstreg are pointers to the same bpfregstate in adjustregminmaxvals. The latter first modifies the dstreg in-place, and later ...

CVE-2026-53091

In the Linux kernel, the following vulnerability has been resolved: net: pull headers in qdiscpktlensegsinit Most ndostartxmit methods expects headers of gso packets to be already in skb-head. net/core/tso.c users are particularly at risk, because tsobuildhdr does a memcpyhdr, skb-data, hdrlen;...

CVE-2026-53090

In the Linux kernel, the following vulnerability has been resolved: bpf: Fix ldabs,ind failure path analysis in subprogs Usage of ldabs,ind instructions got extended into subprogs some time ago via commit 09b28d76eac4 "bpf: Add abnormal return checks.". These are only allowed in subprograms when...