In the Linux kernel, the following vulnerability has been resolved: workqueue: Fix UBSAN 'subtraction overflow' error in shift_and_mask() UBSAN reports the following 'subtraction overflow' error when booting in a virtual machine on Android: | Internal error: UBSAN: integer subtraction overflow: 00000000f2005515 [#1] PREEMPT SMP | Modules linked in: | CPU: 0 PID: 1 Comm: swapper/0 Not tainted 6.10.0-00006-g3cbe9e5abd46-dirty #4 | Hardware name: linux,dummy-virt (DT) | pstate: 600000c5 (nZCv daIF -PAN -UAO -TCO -DIT -SSBS BTYPE=--) | pc : cancel_delayed_work+0x34/0x44 | lr : cancel_delayed_work+0x2c/0x44 | sp : ffff80008002ba60 | x29: ffff80008002ba60 x28: 0000000000000000 x27: 0000000000000000 | x26: 0000000000000000 x25: 0000000000000000 x24: 0000000000000000 | x23: 0000000000000000 x22: 0000000000000000 x21: ffff1f65014cd3c0 | x20: ffffc0e84c9d0da0 x19: ffffc0e84cab3558 x18: ffff800080009058 | x17: 00000000247ee1f8 x16: 00000000247ee1f8 x15: 00000000bdcb279d | x14: 0000000000000001 x13: 0000000000000075 x12: 00000a0000000000 | x11: ffff1f6501499018 x10: 00984901651fffff x9 : ffff5e7cc35af000 | x8 : 0000000000000001 x7 : 3d4d455453595342 x6 : 000000004e514553 | x5 : ffff1f6501499265 x4 : ffff1f650ff60b10 x3 : 0000000000000620 | x2 : ffff80008002ba78 x1 : 0000000000000000 x0 : 0000000000000000 | Call trace: | cancel_delayed_work+0x34/0x44 | deferred_probe_extend_timeout+0x20/0x70 | driver_register+0xa8/0x110 | __platform_driver_register+0x28/0x3c | syscon_init+0x24/0x38 | do_one_initcall+0xe4/0x338 | do_initcall_level+0xac/0x178 | do_initcalls+0x5c/0xa0 | do_basic_setup+0x20/0x30 | kernel_init_freeable+0x8c/0xf8 | kernel_init+0x28/0x1b4 | ret_from_fork+0x10/0x20 | Code: f9000fbf 97fffa2f 39400268 37100048 (d42aa2a0) | ---[ end trace 0000000000000000 ]--- | Kernel panic - not syncing: UBSAN: integer subtraction overflow: Fatal exception This is due to shift_and_mask() using a signed immediate to construct the mask and being called with a shift of 31 (WORK_OFFQ_POOL_SHIFT) so that it ends up decrementing from INT_MIN. Use an unsigned constant '1U' to generate the mask in shift_and_mask().

The remote SUSE Linux SLES15 / SLES_SAP15 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2026:4369-1 advisory.

    The SUSE Linux Enterprise 15 SP6 kernel was updated to fix various security issues:

    The following security issues were fixed:

    - CVE-2024-57841,CVE-2026-53260: net: fix memory leak in tcp_conn_request() (bsc#1235944 bsc#1269731).
    - CVE-2025-68214: timers: Fix NULL function pointer race in timer_shutdown_sync() (bsc#1255225).
    - CVE-2026-23451: bonding: prevent potential infinite loop in bond_header_parse() (bsc#1261604).
    - CVE-2026-31502: team: fix header_ops type confusion with non-Ethernet ports (bsc#1263072).
    - CVE-2026-43147: Revert 'PCI/IOV: Add PCI rescan-remove locking when enabling/disabling SR-IOV'     (bsc#1264642).
    - CVE-2026-43456: bonding: fix type confusion in bond_setup_by_slave() (bsc#1264734).
    - CVE-2026-45968: cpuidle: Skip governor when only one idle state is available (bsc#1267023).
    - CVE-2026-52910: bpf: Free reuseport cBPF prog after RCU grace period (bsc#1268659).
    - CVE-2026-52912: netfilter: nf_queue: hold bridge skb->dev while queued (bsc#1269000).
    - CVE-2026-52929: sctp: stream: fully roll back denied add-stream state (bsc#1269004).
    - CVE-2026-52977: futex: Prevent lockup in requeue-PI during signal/ timeout wakeup (bsc#1269242).
    - CVE-2026-52994: vsock/virtio: fix MSG_ZEROCOPY pinned-pages accounting (bsc#1269126).
    - CVE-2026-53059: dm log: fix out-of-bounds write due to region_count overflow (bsc#1269655).
    - CVE-2026-53110: selftests/bpf: Add ASSERT_OK_FD macro (bsc#1269985).
    - CVE-2026-53163: locking/rtmutex: Skip remove_waiter() when waiter is not enqueued (bsc#1269306).
    - CVE-2026-53264: net/sched: act_api: use RCU with deferred freeing for action lifecycle (bsc#1269238).
    - CVE-2026-53365: vsock/virtio: fix zerocopy completion for multi-skb sends (bsc#1271365).
    - CVE-2026-53381: virtiofs: fix UAF on submount umount (bsc#1271830).
    - CVE-2026-63801: tipc: fix slab-use-after-free Read in tipc_aead_decrypt_done (bsc#1272230).
    - CVE-2026-63823: keys: Pin request_key_auth payload in instantiate paths (bsc#1272182).
    - CVE-2026-63827: apparmor: fix use-after-free in rawdata dedup loop (bsc#1272179).
    - CVE-2026-63879: drm/amdgpu: fix amdgpu_hmm_range_get_pages (bsc#1272569).
    - CVE-2026-63881: drm/amdkfd: fix a vulnerability of integer overflow in kfd debugger (bsc#1272571).
    - CVE-2026-63887: scsi: target: iscsi: Bound iscsi_encode_text_output() appends to rsp_buf (bsc#1272385).
    - CVE-2026-63888: scsi: target: iscsi: Fix CRC overread and double-free in iscsit_handle_text_cmd()     (bsc#1272390).
    - CVE-2026-63920: ipv6: validate extension header length before copying to cmsg (bsc#1272877).
    - CVE-2026-63944: Bluetooth: hci_sync: fix UAF in hci_le_create_cis_sync (bsc#1272662).
    - CVE-2026-63970: vsock/virtio: bind uarg before filling zerocopy skb (bsc#1272673).
    - CVE-2026-63992: tunnels: do not assume transport header in iptunnel_pmtud_check_icmp() (bsc#1272868).
    - CVE-2026-64000: net: hsr: fix potential OOB access in supervision frame handling (bsc#1273030).
    - CVE-2026-64002: ipv4: free net->ipv4.sysctl_local_reserved_ports after unregister_net_sysctl_table()     (bsc#1273774).
    - CVE-2026-64007: netfilter: synproxy: refresh tcphdr after skb_ensure_writable (bsc#1273105).
    - CVE-2026-64010: nfc: llcp: Fix use-after-free race in nfc_llcp_recv_cc() (bsc#1273882).
    - CVE-2026-64011: nfc: llcp: Fix use-after-free in llcp_sock_release() (bsc#1273891).
    - CVE-2026-64015: security/keys: fix missed RCU read section on lookup (bsc#1273762).
    - CVE-2026-64029: ALSA: seq: Serialize UMP output teardown with event_input (bsc#1273766).
    - CVE-2026-64048: net/smc: reject CHID-0 ACCEPT that matches an empty ism_dev slot (bsc#1273484).
    - CVE-2026-64098: drm/virtio: use uninterruptible resv lock for plane updates (bsc#1273488).
    - CVE-2026-64109: af_unix: Peek the queue synchronized (bsc#1273748).
    - CVE-2026-64114: ipv4: raw: reject IP_HDRINCL packets with ihl < 5 (bsc#1273742).
    - CVE-2026-64115: vsock/vmci: fix UAF when peer resets connection during handshake (bsc#1273745).
    - CVE-2026-64121: net: ifb: report ethtool stats over num_tx_queues (bsc#1273743).
    - CVE-2026-64217: netfs: Fix overrun check in netfs_extract_user_iter() (bsc#1272798).
    - CVE-2026-64268: RDMA/siw: bound Read Response placement to the RREAD length (bsc#1273276).
    - CVE-2026-64304: crypto: qat - validate RSA CRT component lengths (bsc#1273944).
    - CVE-2026-64312: crypto: pcrypt - restore callback for non-parallel fallback (bsc#1273968).
    - CVE-2026-64355: bpf: Reject fragmented frames in devmap (bsc#1273422).
    - CVE-2026-64383: smb: client: fix double-free in SMB2_flush() replay (bsc#1273426).
    - CVE-2026-64384: smb: client: fix change notify replay double-free (bsc#1274541).
    - CVE-2026-64385: smb: client: fix double-free in SMB2_ioctl() replay (bsc#1274539).
    - CVE-2026-64386: smb: client: fix query_info() replay double-free (bsc#1274543).
    - CVE-2026-64387: smb: client: fix query directory replay double-free (bsc#1274545).
    - CVE-2026-64423: ipv4: igmp: remove multicast group from hash table on device destruction (bsc#1274274).
    - CVE-2026-64450: tipc: fix out-of-bounds read in broadcast Gap ACK blocks (bsc#1273523).
    - CVE-2026-64481: ALSA: hda/cs35l41: Fix firmware load work teardown (bsc#1274547).
    - CVE-2026-64541: net/smc: fix UAF in smc_cdc_rx_handler() by pinning the socket (bsc#1273303).
    - CVE-2026-64543: tipc: fix use-after-free of the discoverer in tipc_disc_rcv() (bsc#1273311).
    - CVE-2026-64562: KVM: nVMX: Hide shadow VMCS right after VMCLEAR (bsc#1273930).
    - CVE-2026-64563: rhashtable: clear stale iter->p on table restart (bsc#1273995).
    - CVE-2026-64572: ipv4: fib: free fib_alias with kfree_rcu() on insert error path (bsc#1274014).
    - CVE-2026-64577: gtp: check skb_pull_data() return in gtp1u_send_echo_resp() (bsc#1274031).
    - CVE-2026-64581: xfrm: fix sk_dst_cache double-free in xfrm_user_policy() (bsc#1274041).
    - CVE-2026-64593: btrfs: do not trim a device which is not writeable (bsc#1274497).
    - CVE-2026-68121: pppoe: reload header pointer after dev_hard_header() (bsc#1274888).
    - CVE-2026-68136: net: gro: fix double aggregation of flush-marked skbs (bsc#1275474).
    - CVE-2026-68138: net/sched: serialize qdisc_rtab_list against concurrent get/put (bsc#1274941).
    - CVE-2026-68155: libceph: Reject monmaps advertising zero monitors (bsc#1275304).
    - CVE-2026-68158: libceph: Fix multiplication overflow in decode_new_up_state_weight() (bsc#1275307).
    - CVE-2026-68159: libceph: bound pg_{temp,upmap,upmap_items} length to CEPH_PG_MAX_SIZE (bsc#1275470).
    - CVE-2026-68160: ceph: fix pre-auth out-of-bounds read on snaptrace in ceph_handle_caps() (bsc#1275472).
    - CVE-2026-68202: ALSA: seq: close a re-opened queue timer in the destructor (bsc#1275161).
    - CVE-2026-68397: net/iucv: take a reference on the socket found in afiucv_hs_rcv() (bsc#1274898).
    - CVE-2026-68398: ppp: defer channel free to an RCU grace period to fix pppol2tp RX UAF (bsc#1274908).
    - CVE-2026-68417: RDMA/siw: publish QP after initialization (bsc#1274696).
    - CVE-2026-68426: xfrm: fix stale skb->prev after async crypto steals a GSO segment (bsc#1274705).
    - CVE-2026-68480: x86/bugs: Make Safe-RET robust against interrupt injection (bsc#1274208).
    - CVE-2026-72020: ipvs: reset full ip_vs_seq structs in ip_vs_conn_new (bsc#1275506).
    - CVE-2026-72069: locking/rt: Fix the incorrect RCU protection in rt_spin_unlock() (bsc#1275528).
    - CVE-2026-72072: net/mlx5e: macsec: fix use-after-free of metadata_dst on RX SC delete (bsc#1277155).
    - CVE-2026-72083: scsi: target: core: Fix iSCSI ISID use-after-free in REGISTER AND MOVE (bsc#1275535).
    - CVE-2026-72084: scsi: target: Bound PR-OUT TransportID parsing to the received buffer (bsc#1275540).
    - CVE-2026-72123: can: bcm: defer rx_op deallocation to workqueue to fix thrtimer UAF (bsc#1277523).
    - CVE-2026-72135: tpm: Make the TPM character devices non-seekable (bsc#1277571).
    - CVE-2026-72221: sunrpc: wait for in-flight TLS handshake callback when cancel loses race (bsc#1275665).
    - CVE-2026-72222: sunrpc: pin svc_xprt across the asynchronous TLS handshake callback (bsc#1275669).
    - CVE-2026-72251: netfilter: nf_nat_sip: reload possible stale data pointer (bsc#1275827).
    - CVE-2026-72262: ASoC: SOF: ipc3-control: Fix heap overflow in bytes_ext put/get (bsc#1277678).
    - CVE-2026-72288: KVM: arm64: vgic: Handle race between interrupt affinity change and LPI disabling     (bsc#1275886).
    - CVE-2026-72289: KVM: arm64: vgic: Check the interrupt is still ours before migrating it (bsc#1275905).
    - CVE-2026-72317: SUNRPC: pin upper rpc_clnt across the TLS connect_worker (bsc#1275925).
    - CVE-2026-72339: qede: fix off-by-one in BD ring consumption on build_skb failure (bsc#1276006).
    - CVE-2026-72389: bridge: stp: Fix a potential use-after-free when deleting a bridge (bsc#1273869).
    - CVE-2026-74345: RDMA/siw: Fix endpoint/socket association handling (bsc#1277285).
    - CVE-2026-74377: RDMA/rxe: Copy WQE to local buffer in non-SRQ receive path (bsc#1278236).
    - CVE-2026-74378: RDMA/rxe: Fix TOCTOU heap overflow in get_srq_wqe (bsc#1278233).
    - CVE-2026-74390: RDMA/irdma: Fix out-of-bounds write in irdma_copy_user_pgaddrs (bsc#1278088).
    - CVE-2026-74394: RDMA/srpt: fix integer overflow in immediate data length check (bsc#1277408).
    - CVE-2026-74454: drm/vc4: Supply the overflow slot size in BPOS, not the whole bin BO (bsc#1277073).
    - CVE-2026-74488: wifi: mwifiex: use the subframe length when parsing A-MSDU TDLS frames (bsc#1276350).
    - CVE-2026-74496: fou: Fix use-after-free in fou_create() (bsc#1275867).
    - CVE-2026-74516: KVM: SVM: Update x2APIC MSR intercepts if AVIC is inhibited while L2 is active     (bsc#1275797).
    - CVE-2026-74518: mm/hugetlb: fix list corruption in allocate_file_region_entries() (bsc#1275798).
    - CVE-2026-74537: Bluetooth: ISO: hold sk properly in iso_conn_ready (bsc#1275687).
    - CVE-2026-74556: scsi: libiscsi_tcp: Bound SCSI Response data segment to the connection buffer     (bsc#1275696).
    - CVE-2026-74581: net: ipv6: clear suppressed fib6 rule result (bsc#1275782).
    - CVE-2026-74582: packet: use consistent hard_header_len in non-ring send paths (bsc#1275784).
    - CVE-2026-74612: veth: fix skb length accounting after XDP frag adjustment (bsc#1277505).
    - CVE-2026-74669: ipvs: clear IPv4 options after rebasing tunnel ICMP errors (bsc#1277391).
    - CVE-2026-74695: netfilter: nf_flow_table: drop existing skb dst before skb_dst_set_noref()     (bsc#1276931).
    - CVE-2026-80722: wifi: mac80211: validate individual TWT params before driver setup (bsc#1277860).

    The following non security issues were fixed:

    - ibmvnic: Only record tx completed bytes once per handler (bsc#1274620).
    - KVM: arm64: vgic: Fix IIDR revision field extracted from wrong value (git-fixes).
    - KVM: x86/mmu: WARN and clear role.invalid when creating a child shadow page (git-fixes).
    - mkspec-dtb: Move DTS prefix into package list.
    - mkspec-dtb: Move provides-obsoletes to package list.
    - mkspec-dtb: Put per-architecture package lists into a hash.
    - mkspec-dtb: re-indent.
    - net: mana: Add debug knob to skip TX timeout recovery reset (git-fixes).
    - net: mana: Add handler for sriov configure (bsc#1272756).
    - net: mana: Cap MSI-X vectors to the device MSI-X table size (git-fixes).
    - net: mana: Extend RX CQE coalescing up to 8 packets (git-fixes).
    - net: mana: Fall back to scattered pages for GDMA queues (git-fixes).
    - net: mana: force full-page RX buffers via ethtool private flag (bsc#1269792).
    - net: mana: refactor mana_get_strings() and mana_get_sset_count() to use switch (bsc#1269792).
    - net: mana: Route ring-buffer access through offset-based helpers (git-fixes).
    - net: tap: set skb->dev before parsing virtio net header in tap_get_user_xdp() (git-fixes bsc#1274550).
    - PCI: hv: Set irq_retrigger callback for the Hyper-V PCI MSI irqchip (git-fixes).
    - powerpc/pseries: lparcfg - fix kbuf[] underflow (bsc#1274753 ltc#221289 bsc#1274754 ltc#221288     bsc#1274752       ltc#221290).
    - RDMA/mana_ib: drain QP references after partial table insertion (git-fixes).
    - RDMA/mana_ib: unify QP lookup table (git-fixes).
    - scsi: storvsc: Support manual scans for all Hyper-V targets (git-fixes).
    - smb/client: handle overlapping allocated ranges in fallocate (bsc#1274902).
    - x86/bugs: Clarify that syscall hardening isn't a BHI mitigation (git-fixes).

Tenable has extracted the preceding description block directly from the SUSE security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

  - In the Linux kernel, the following vulnerability has been resolved: workqueue: Fix UBSAN 'subtraction     overflow' error in shift_and_mask() UBSAN reports the following 'subtraction overflow' error when booting     in a virtual machine on Android: | Internal error: UBSAN: integer subtraction overflow: 00000000f2005515     [#1] PREEMPT SMP | Modules linked in: | CPU: 0 PID: 1 Comm: swapper/0 Not tainted     6.10.0-00006-g3cbe9e5abd46-dirty #4 | Hardware name: linux,dummy-virt (DT) | pstate: 600000c5 (nZCv daIF
    -PAN -UAO -TCO -DIT -SSBS BTYPE=--) | pc : cancel_delayed_work+0x34/0x44 | lr :
    cancel_delayed_work+0x2c/0x44 | sp : ffff80008002ba60 | x29: ffff80008002ba60 x28: 0000000000000000 x27:
    0000000000000000 | x26: 0000000000000000 x25: 0000000000000000 x24: 0000000000000000 | x23:
    0000000000000000 x22: 0000000000000000 x21: ffff1f65014cd3c0 | x20: ffffc0e84c9d0da0 x19: ffffc0e84cab3558     x18: ffff800080009058 | x17: 00000000247ee1f8 x16: 00000000247ee1f8 x15: 00000000bdcb279d | x14:
    0000000000000001 x13: 0000000000000075 x12: 00000a0000000000 | x11: ffff1f6501499018 x10: 00984901651fffff     x9 : ffff5e7cc35af000 | x8 : 0000000000000001 x7 : 3d4d455453595342 x6 : 000000004e514553 | x5 :
    ffff1f6501499265 x4 : ffff1f650ff60b10 x3 : 0000000000000620 | x2 : ffff80008002ba78 x1 : 0000000000000000     x0 : 0000000000000000 | Call trace: | cancel_delayed_work+0x34/0x44 |     deferred_probe_extend_timeout+0x20/0x70 | driver_register+0xa8/0x110 |
    __platform_driver_register+0x28/0x3c | syscon_init+0x24/0x38 | do_one_initcall+0xe4/0x338 |     do_initcall_level+0xac/0x178 | do_initcalls+0x5c/0xa0 | do_basic_setup+0x20/0x30 |     kernel_init_freeable+0x8c/0xf8 | kernel_init+0x28/0x1b4 | ret_from_fork+0x10/0x20 | Code: f9000fbf     97fffa2f 39400268 37100048 (d42aa2a0) | ---[ end trace 0000000000000000 ]--- | Kernel panic - not syncing:
    UBSAN: integer subtraction overflow: Fatal exception This is due to shift_and_mask() using a signed     immediate to construct the mask and being called with a shift of 31 (WORK_OFFQ_POOL_SHIFT) so that it ends     up decrementing from INT_MIN. Use an unsigned constant '1U' to generate the mask in shift_and_mask().
    (CVE-2024-44981)

Note that Nessus relies on the presence of the package as reported by the vendor.

ID	Name	Product	Family	Type	Severity
350940	SUSE SLES15: cluster-md-kmp-default / dlm-kmp-default / gfs2-kmp-default / etc (SUSE-SU-2026:4369-1)	Nessus	SuSE Local Security Checks	Local	high
347900	SUSE SLED15 / SLES15 : Security update for the Linux Kernel (SUSE-SU-2026:4254-1)	Nessus	SuSE Local Security Checks	Local	high
245096	Linux Distros Unpatched Vulnerability : CVE-2024-44981	Nessus	Misc.	Local	medium

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