Threats Tagged 'cve-2026-64121'

This update for the SUSE Linux Enterprise Kernel 6.4.0-150700.7.44 fixes various security issues: The following security issues were fixed: - CVE-2026-46116: xfrm: defensively unhash xfrm_state lists in __xfrm_state_delete (bsc#1267370). - CVE-2026-63802: blk-cgroup: fix UAF in __blkcg_rstat_flush() (bsc#1272283). - CVE-2026-63888: scsi: target: iscsi: Fix CRC overread and double-free in iscsit_handle_text_cmd() (bsc#1272391). - CVE-2026-63912: xfrm: esp: restore combined single-frag length gate (bsc#1272837). - CVE-2026-63917: ip6: vti: Use ip6_tnl.net in vti6_changelink() (bsc#1273015). - CVE-2026-63920: ipv6: validate extension header length before copying to cmsg (bsc#1273012). - CVE-2026-63921: ip6: vti: Use ip6_tnl.net in vti6_siocdevprivate() (bsc#1273011). - CVE-2026-63944: Bluetooth: hci_sync: fix UAF in hci_le_create_cis_sync (bsc#1273003). - CVE-2026-63971: sctp: fix race between sctp_wait_for_connect and peeloff (bsc#1272679). - CVE-2026-63994: tunnels: load network headers after skb_cow() in iptunnel_pmtud_build_icmp[v6]() (bsc#1273051). - CVE-2026-64000: net: hsr: fix potential OOB access in supervision frame handling (bsc#1273052). - CVE-2026-64011: nfc: llcp: Fix use-after-free in llcp_sock_release() (bsc#1276493). - CVE-2026-64114: ipv4: raw: reject IP_HDRINCL packets with ihl < 5 (bsc#1273833). - CVE-2026-64121: net: ifb: report ethtool stats over num_tx_queues (bsc#1273837). - CVE-2026-64189: netfilter: ipset: fix race between dump and ip_set_list resize (bsc#1272208). - CVE-2026-68121: pppoe: reload header pointer after dev_hard_header() (bsc#1275228). - CVE-2026-68202: ALSA: seq: close a re-opened queue timer in the destructor (bsc#1275162). - CVE-2026-74394: RDMA/srpt: fix integer overflow in immediate data length check (bsc#1277409). - CVE-2026-74612: veth: fix skb length accounting after XDP frag adjustment (bsc#1277506).

This update for the SUSE Linux Enterprise Kernel 6.12.0-160000.37.1 fixes various security issues: The following security issues were fixed: - CVE-2026-63888: scsi: target: iscsi: Fix CRC overread and double-free in iscsit_handle_text_cmd() (bsc#1272391). - CVE-2026-63917: ip6: vti: Use ip6_tnl.net in vti6_changelink() (bsc#1273015). - CVE-2026-63920: ipv6: validate extension header length before copying to cmsg (bsc#1273012). - CVE-2026-63921: ip6: vti: Use ip6_tnl.net in vti6_siocdevprivate() (bsc#1273011). - CVE-2026-64000: net: hsr: fix potential OOB access in supervision frame handling (bsc#1273052). - CVE-2026-64114: ipv4: raw: reject IP_HDRINCL packets with ihl < 5 (bsc#1273833). - CVE-2026-64121: net: ifb: report ethtool stats over num_tx_queues (bsc#1273837). - CVE-2026-68121: pppoe: reload header pointer after dev_hard_header() (bsc#1275228). - CVE-2026-72217: SUNRPC: Bound-check xdr_buf_to_bvec() stores before writing (bsc#1276299). - CVE-2026-74394: RDMA/srpt: fix integer overflow in immediate data length check (bsc#1277409). - CVE-2026-74612: veth: fix skb length accounting after XDP frag adjustment (bsc#1277506).

This update for the SUSE Linux Enterprise Kernel 6.12.0-160000.36.1 fixes various security issues: The following security issues were fixed: - CVE-2026-63802: blk-cgroup: fix UAF in __blkcg_rstat_flush() (bsc#1272283). - CVE-2026-63888: scsi: target: iscsi: Fix CRC overread and double-free in iscsit_handle_text_cmd() (bsc#1272391). - CVE-2026-63912: xfrm: esp: restore combined single-frag length gate (bsc#1272837). - CVE-2026-63917: ip6: vti: Use ip6_tnl.net in vti6_changelink() (bsc#1273015). - CVE-2026-63920: ipv6: validate extension header length before copying to cmsg (bsc#1273012). - CVE-2026-63921: ip6: vti: Use ip6_tnl.net in vti6_siocdevprivate() (bsc#1273011). - CVE-2026-63971: sctp: fix race between sctp_wait_for_connect and peeloff (bsc#1272679). - CVE-2026-63994: tunnels: load network headers after skb_cow() in iptunnel_pmtud_build_icmp[v6]() (bsc#1273051). - CVE-2026-64000: net: hsr: fix potential OOB access in supervision frame handling (bsc#1273052). - CVE-2026-64114: ipv4: raw: reject IP_HDRINCL packets with ihl < 5 (bsc#1273833). - CVE-2026-64121: net: ifb: report ethtool stats over num_tx_queues (bsc#1273837). - CVE-2026-64189: netfilter: ipset: fix race between dump and ip_set_list resize (bsc#1272208). - CVE-2026-68121: pppoe: reload header pointer after dev_hard_header() (bsc#1275228). - CVE-2026-68202: ALSA: seq: close a re-opened queue timer in the destructor (bsc#1275162). - CVE-2026-72217: SUNRPC: Bound-check xdr_buf_to_bvec() stores before writing (bsc#1276299). - CVE-2026-74394: RDMA/srpt: fix integer overflow in immediate data length check (bsc#1277409). - CVE-2026-74612: veth: fix skb length accounting after XDP frag adjustment (bsc#1277506).

In the Linux kernel, the following vulnerability has been resolved: net: ifb: report ethtool stats over num_tx_queues ifb_dev_init() allocates dp->tx_private to dev->num_tx_queues entries via kzalloc_objs(*txp, dev->num_tx_queues). Both IFB per-queue RX and TX stats live in those entries: ifb_xmit() updates txp->rx_stats using the skb queue mapping, ifb_ri_tasklet() updates txp->tx_stats, and ifb_stats64() aggregates both over dev->num_tx_queues. The ethtool stats callbacks instead size and walk the per-queue stats with dev->real_num_rx_queues and dev->real_num_tx_queues. With an asymmetric device where the RX queue count exceeds the TX queue count, for example: ip link add name ifb10 numtxqueues 1 numrxqueues 8 type ifb ethtool -S ifb10 ifb_get_ethtool_stats() indexes past the tx_private allocation and copies adjacent slab data through ETHTOOL_GSTATS. Use dev->num_tx_queues consistently for the stats strings, the stats count, and the stats data walks. This reports one RX stats group and one TX stats group for each backing ifb_q_private entry, which is the queue set IFB can actually populate. Reproduced under UML+KASAN at v7.1-rc2: BUG: KASAN: slab-out-of-bounds in ifb_fill_stats_data+0x3c/0xae Read of size 8 at addr 0000000062dbd228 by task ethtool/36 ifb_fill_stats_data+0x3c/0xae ifb_get_ethtool_stats+0xc0/0x129 __dev_ethtool+0x1ca5/0x363c dev_ethtool+0x123/0x1b3 dev_ioctl+0x56c/0x744 sock_do_ioctl+0x15f/0x1b2 sock_ioctl+0x4d5/0x50a sys_ioctl+0xd8b/0xde9 With the patch applied, the same UML+KASAN repro is silent and ethtool -S ifb10 reports only the stats backed by the single allocated tx_private entry.

A vulnerability in the Linux kernel IFB (Intermediate Functional Block) network driver was resolved. The issue involved inconsistent use of queue counts when reporting ethtool statistics, leading to out-of-bounds memory reads. Specifically, the ethtool stats callbacks used dev->real_num_rx_queues and dev->real_num_tx_queues, while the allocation was based on dev->num_tx_queues. This mismatch could cause reading beyond allocated memory, resulting in a slab-out-of-bounds error. The flaw was confirmed with KASAN under UML. The patch ensures consistent use of dev->num_tx_queues for stats reporting, preventing memory over-read.