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Red Hat Security Advisory

RHSA-2026:61887

kernel security, bug fix, and enhancement update

Released 2026-09-01 · Red Hat rating Important · View on Red Hat →

Fixed in

Fixes 34 records

Priority MEDIUM 50

In the Linux kernel, the following vulnerability has been resolved: nvmet-auth: reject short AUTH_RECEIVE buffers nvmet_execute_auth_receive() trusts the AUTH_RECEIVE allocation length after checking only that it is nonz…

CVSS 3.1CRITICAL 9.8 Network No auth No interaction EPSS 0.00803 Published 2026-08-15 Partial fix · 6.1.191, 6.6.160 +4
Priority MEDIUM 50

In the Linux kernel, the following vulnerability has been resolved: locking/rt: Fix the incorrect RCU protection in rt_spin_unlock() rt_spin_unlock() releases the RCU protection before unlocking the lock.

CVSS 3.1CRITICAL 9.8 Network No auth No interaction EPSS 0.00728 Published 2026-08-15 Partial fix · 5.15.217, 6.1.184 +5 CWE-416
Priority MEDIUM 50

In the Linux kernel, the following vulnerability has been resolved: pNFS: Fix use-after-free in pnfs_update_layout() When hitting the NFS_LAYOUT_RETURN branch in pnfs_update_layout(), the code calls pnfs_prepare_to_retry…

CVSS 3.1CRITICAL 9.8 Network No auth No interaction EPSS 0.00644 Published 2026-07-19 Partial fix · 5.10.260, 5.5 +7 CWE-416
Priority MEDIUM 50

In the Linux kernel, the following vulnerability has been resolved: nfsd: release layout stid on setlease failure nfs4_alloc_stid() publishes the new stid into cl->cl_stateids via idr_alloc_cyclic() under cl_lock before…

CVSS 3.1CRITICAL 9.8 Network No auth No interaction EPSS 0.00663 Published 2026-07-19 Partial fix · 5.10.261, 5.15.212 +6 CWE-416
Priority MEDIUM 49

In the Linux kernel, the following vulnerability has been resolved: smb: client: fix change notify replay double-free A response-bearing attempt can return a replayable error and free its response buffer.

CVSS 3.1CRITICAL 9.8 Network No auth No interaction EPSS 0.00457 Published 2026-07-25 Fixed in 6.6.145, 6.12.96 +3 CWE-415
Priority MEDIUM 49

In the Linux kernel, the following vulnerability has been resolved: smb: client: protect tc_count increment in smb2_find_smb_sess_tcon_unlocked() Commit 96c4af418586 ("cifs: Fix locking usage for tcon fields") refactored…

CVSS 3.1CRITICAL 9.8 Network No auth No interaction EPSS 0.00407 Published 2026-07-19 Fixed in 6.6.142, 6.12.92 +4 CWE-362
Priority MEDIUM 47

In the Linux kernel, the following vulnerability has been resolved: nvmet: fix pre-auth out-of-bounds heap read in Discovery Get Log Page nvmet_execute_disc_get_log_page() validates only the dword alignment of the host-s…

CVSS 3.1CRITICAL 9.1 Network No auth No interaction EPSS 0.00803 Published 2026-07-25 Partial fix · 6.1.191, 6.6.160 +4 CWE-125
Priority MEDIUM 41

In the Linux kernel, the following vulnerability has been resolved: net: mana: validate rx_req_idx to prevent out-of-bounds array access In mana_hwc_rx_event_handler(), rx_req_idx is derived from sge->address in DMA-cohe…

CVSS 3.1CRITICAL 9.3 Local No auth No interaction EPSS 0.00142 Published 2026-07-19 Partial fix · 5.15.209, 6.1.175 +5 CWE-125
Priority MEDIUM 40

In the Linux kernel, the following vulnerability has been resolved: ip6_tunnel: use skb_vlan_inet_prepare() in __ip6_tnl_rcv() Blamed commit did not take care of VLAN encapsulations as spotted by syzbot [1].

CVSS 3.1HIGH 7.5 Network No auth No interaction EPSS 0.00547 Published 2026-01-25 Partial fix · 5.10.249, 5.15.199 +6 CWE-457
Priority LOW 39

In the Linux kernel, the following vulnerability has been resolved: crypto: qat - fix VF2PF work teardown race in adf_disable_sriov() The VF2PF interrupt handler queues PF-side response work that stores a raw pointer to…

CVSS 3.1HIGH 8.8 Local Low privileges No interaction EPSS 0.00135 Published 2026-07-25 Partial fix · 5.10.261, 5.15.212 +6 CWE-416
Priority LOW 39

In the Linux kernel, the following vulnerability has been resolved: nfsd: fix posix_acl leak on SETACL decode failure nfsaclsvc_decode_setaclargs() and nfs3svc_decode_setaclargs() each call nfs_stream_decode_acl() twice,…

CVSS 3.1HIGH 7.5 Network No auth No interaction EPSS 0.00529 Published 2026-07-19 Partial fix · 5.10.260, 5.15.211 +6 CWE-401
Priority LOW 39

In the Linux kernel, the following vulnerability has been resolved: NFSv4/flexfiles: reject zero filehandle version count ff_layout_alloc_lseg() decodes the filehandle-version array count from the flexfiles layout body.

CVSS 3.1HIGH 7.5 Network No auth No interaction EPSS 0.00529 Published 2026-07-19 Partial fix · 5.10.261, 5.15.212 +6 CWE-20
Priority LOW 39

In the Linux kernel, the following vulnerability has been resolved: NFSv4/pNFS: reject zero-length r_addr in nfs4_decode_mp_ds_addr nfs4_decode_mp_ds_addr() decodes the r_netid and r_addr opaques of a netaddr4 from a GET…

CVSS 3.1HIGH 7.5 Network No auth No interaction EPSS 0.00517 Published 2026-07-19 Partial fix · 5.15.211, 6.1.177 +5 CWE-476
Priority LOW 39

In the Linux kernel, the following vulnerability has been resolved: iommu/amd: Fix clone_alias() to use the original device's devid Currently clone_alias() assumes first argument (pdev) is always the original device poin…

CVSS 3.1HIGH 8.8 Local Low privileges No interaction EPSS 0.0013 Published 2026-06-24 Partial fix · 5.5, 6.1.191 +5 CWE-681
Priority LOW 38

In the Linux kernel, the following vulnerability has been resolved: ALSA: virtio: Validate control metadata from the device virtio-snd control handling trusts the device-provided control type and value count returned by…

CVSS 3.1HIGH 8.4 Local No auth No interaction EPSS 0.00193 Published 2026-07-25 Fixed in 6.12.96, 6.18.39 +2 CWE-125
Priority LOW 35

In the Linux kernel, the following vulnerability has been resolved: crypto: qat - validate RSA CRT component lengths The generic RSA key parser (rsa_helper.c) bounds each CRT component (p, q, dp, dq, qinv) by the modulus…

CVSS 3.1HIGH 7.8 Local Low privileges No interaction EPSS 0.00169 Published 2026-07-25 Partial fix · 5.10.261, 5.15.212 +6 CWE-787
Priority LOW 35

In the Linux kernel, the following vulnerability has been resolved: Input: synaptics-rmi4 - bound the F3A keymap to the GPIO count rmi_f3a_initialize() takes the GPIO count from the device query register (f3a->gpio_count…

CVSS 3.1HIGH 7.8 Local Low privileges No interaction EPSS 0.00169 Published 2026-07-25 Partial fix · 5.10.261, 5.15.212 +6 CWE-787
Priority LOW 35

In the Linux kernel, the following vulnerability has been resolved: Input: synaptics-rmi4 - bound the F30 keymap to the GPIO/LED count rmi_f30_map_gpios() allocates gpioled_key_map with min(gpioled_count, TRACKSTICK_RANG…

CVSS 3.1HIGH 7.8 Local Low privileges No interaction EPSS 0.00169 Published 2026-07-25 Partial fix · 5.10.261, 5.15.212 +6 CWE-787
Priority LOW 35

In the Linux kernel, the following vulnerability has been resolved: netfilter: ipset: fix race between dump and ip_set_list resize The release path of ip_set_dump_do() and ip_set_dump_done() read inst->ip_set_list via ip…

CVSS 3.1HIGH 7.8 Local Low privileges No interaction EPSS 0.00126 Published 2026-07-20 Partial fix · 4.20, 5.10.261 +7 CWE-362
Priority LOW 35

In the Linux kernel, the following vulnerability has been resolved: mm/huge_memory: update file PMD counter before folio_put() __split_huge_pmd_locked() updates the file/shmem RSS counter after dropping the PMD mapping's…

CVSS 3.1HIGH 7.8 Local Low privileges No interaction EPSS 0.0013 Published 2026-06-25 Partial fix · 5.10.259, 5.15.210 +6 CWE-416
Priority LOW 35

In the Linux kernel, the following vulnerability has been resolved: zram: fix use-after-free in zram_bvec_write_partial() zram_read_page() picks the sync or async backing device read path based on whether the parent bio…

CVSS 3.1HIGH 7.8 Local Low privileges No interaction EPSS 0.00107 Published 2026-06-25 Partial fix · 6.6.143, 6.12.94 +3 CWE-364
Priority LOW 35

In the Linux kernel, the following vulnerability has been resolved: ip6_gre: Use cached t->net in ip6erspan_changelink().

CVSS 3.1HIGH 7.8 Local Low privileges No interaction EPSS 0.00128 Published 2026-05-28 Partial fix · 4.17, 5.10.258 +7 CWE-416
Priority LOW 35

In the Linux kernel, the following vulnerability has been resolved: bonding: alb: fix UAF in rlb_arp_recv during bond up/down The ALB RX path may access rx_hashtbl concurrently with bond teardown.

CVSS 3.1HIGH 7.8 Local Low privileges No interaction EPSS 0.00126 Published 2026-05-27 Partial fix · 5.10.252, 5.15.202 +6 CWE-416
Priority LOW 33

In the Linux kernel, the following vulnerability has been resolved: mm: shrinker: fix shrinker_info teardown race with expansion expand_shrinker_info() iterates all visible memcgs under shrinker_mutex, including memcgs t…

CVSS 3.1HIGH 7.8 Local Low privileges No interaction EPSS 0.00097 Published 2026-07-25 Fixed in 6.12.96, 6.18.39 +2 CWE-362
Priority LOW 33

In 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)…

CVSS 3.1HIGH 7.8 Local Low privileges No interaction EPSS 0.00099 Published 2026-06-25 Fixed in 6.18.36, 7.0.13 +1
Priority LOW 33

In the Linux kernel, the following vulnerability has been resolved: NFSD: fix nfs4_file access extra count in nfsd4_add_rdaccess_to_wrdeleg In nfsd4_add_rdaccess_to_wrdeleg, if fp->fi_fds[O_RDONLY] is already set by anot…

CVSS 3.1HIGH 7.5 Network No auth No interaction EPSS 0.00426 Published 2026-06-24 Fixed in 6.18.33, 7.0.10 +1
Priority LOW 33

In the Linux kernel, the following vulnerability has been resolved: netfilter: nf_tables: Fix for duplicate device in netdev hooks When handling NETDEV_REGISTER notification, duplicate device registration must be avoided…

CVSS 3.1HIGH 7.8 Local Low privileges No interaction EPSS 0.00119 Published 2026-05-08 Fixed in 6.18.19, 6.19.9 +1
Priority LOW 30

In the Linux kernel, the following vulnerability has been resolved: NFSv4: include MAY_WRITE in open permission mask for O_TRUNC POSIX requires write permission to truncate a file, so an open() that specifies O_TRUNC mus…

CVSS 3.1HIGH 7.1 Local Low privileges No interaction EPSS 0.00147 Published 2026-07-25 Partial fix · 5.10.261, 5.15.212 +6 CWE-862
Priority LOW 30

In the Linux kernel, the following vulnerability has been resolved: USB: serial: io_ti: fix heap overflow in get_manuf_info() get_manuf_info() reads le16_to_cpu(rom_desc->Size) bytes from the device I2C EEPROM into a buf…

CVSS 3.1MEDIUM 6.8 Physical No auth No interaction EPSS 0.00271 Published 2026-06-25 Partial fix · 5.10.259, 5.15.210 +6 CWE-787
Priority LOW 30

In the Linux kernel, the following vulnerability has been resolved: netfilter: nfnetlink_cthelper: fix OOB read in nfnl_cthelper_dump_table() nfnl_cthelper_dump_table() has a 'goto restart' that jumps to a label inside t…

CVSS 3.1HIGH 7.1 Local Low privileges No interaction EPSS 0.00132 Published 2026-05-08 Partial fix · 5.10.253, 5.15.203 +6 CWE-125
Priority LOW 24

In the Linux kernel, the following vulnerability has been resolved: seccomp: passthrough uretprobe systemcall without filtering When attaching uretprobes to processes running inside docker, the attached process is segfau…

CVSS 3.1MEDIUM 5.5 Local Low privileges No interaction EPSS 0.0018 Published 2025-03-06 Partial fix · 6.12.14, 6.13.3 +1
Priority LOW 22

In the Linux kernel, the following vulnerability has been resolved: x86/bugs: Make Safe-RET robust against interrupt injection An attacker injecting interrupts while the Safe-RET mitigation executes on machines affected…

CVSS — EPSS 0.00234 Published 2026-08-06 Partial fix · 5.10.264, 5.15.215 +7
Priority LOW 22

In the Linux kernel, the following vulnerability has been resolved: userfaultfd: prevent registration of special VMAs Vova Tokarev says: userfaultfd allows registration on shadow stack VMAs.

CVSS — EPSS 0.00206 Published 2026-08-10 Fixed in 6.6.153, 6.12.105 +3
Priority LOW 22

In the Linux kernel, the following vulnerability has been resolved: mm/khugepaged: write all dirty file folios when collapsing [There is no upstream commit, as this code was removed by upstream commit 044925f9b565 ("mm:…

CVSS — EPSS 0.0015 Published 2026-08-10 Partial fix · 7.1.4