In the Linux kernel, the following vulnerability has been resolved: f2fs: fix use-after-free of sbi in f2fs_compress_write_end_io() In f2fs_compress_write_end_io(), dec_page_count(sbi, type) can bring the F2FS_WB_CP_DATA counter to zero, unblocking f2fs_wait_on_all_pages() in f2fs_put_super() on a concurrent unmount CPU. The unmount path then proceeds to call f2fs_destroy_page_array_cache(sbi), which destroys sbi->page_array_slab via kmem_cache_destroy(), and eventually kfree(sbi). Meanwhile, the bio completion callback is still executing: when it reaches page_array_free(sbi, ...), it dereferences sbi->page_array_slab — a destroyed slab cache — to call kmem_cache_free(), causing a use-after-free. This is the same class of bug as CVE-2026-23234 (which fixed the equivalent race in f2fs_write_end_io() in data.c), but in the compressed writeback completion path that was not covered by that fix. Fix this by moving dec_page_count() to after page_array_free(), so that all sbi accesses complete before the counter decrement that can unblock unmount. For non-last folios (where atomic_dec_return on cic->pending_pages is nonzero), dec_page_count is called immediately before returning — page_array_free is not reached on this path, so there is no post-decrement sbi access. For the last folio, page_array_free runs while the F2FS_WB_CP_DATA counter is still nonzero (this folio has not yet decremented it), keeping sbi alive, and dec_page_count runs as the final operation.

The remote Debian 12 host has packages installed that are affected by multiple vulnerabilities as referenced in the dla-4665 advisory.

    -------------------------------------------------------------------------     Debian LTS Advisory DLA-4665-1                debian-lts@lists.debian.org     https://www.debian.org/lts/security/                        Ben Hutchings     July 03, 2026                                 https://wiki.debian.org/LTS
    -------------------------------------------------------------------------

    Package        : linux     Version        : 6.1.176-1     CVE ID         : CVE-2023-53292 CVE-2023-53989 CVE-2023-54125 CVE-2023-54271                      CVE-2023-54322 CVE-2024-27012 CVE-2024-36922 CVE-2024-53221                      CVE-2024-56657 CVE-2025-10263 CVE-2025-21739 CVE-2025-21863                      CVE-2025-22105 CVE-2025-37864 CVE-2025-38584 CVE-2025-38627                      CVE-2025-38710 CVE-2025-39997 CVE-2025-40347 CVE-2025-68201                      CVE-2025-68315 CVE-2025-68823 CVE-2026-23066 CVE-2026-23255                      CVE-2026-23310 CVE-2026-23389 CVE-2026-23399 CVE-2026-23442                      CVE-2026-23444 CVE-2026-23468 CVE-2026-31407 CVE-2026-31449                      CVE-2026-31488 CVE-2026-31489 CVE-2026-31500 CVE-2026-31532                      CVE-2026-31576 CVE-2026-31577 CVE-2026-31578 CVE-2026-31580                      CVE-2026-31581 CVE-2026-31583 CVE-2026-31585 CVE-2026-31586                      CVE-2026-31587 CVE-2026-31588 CVE-2026-31590 CVE-2026-31594                      CVE-2026-31595 CVE-2026-31596 CVE-2026-31597 CVE-2026-31598                      CVE-2026-31599 CVE-2026-31602 CVE-2026-31603 CVE-2026-31605                      CVE-2026-31607 CVE-2026-31611 CVE-2026-31612 CVE-2026-31613                      CVE-2026-31615 CVE-2026-31616 CVE-2026-31617 CVE-2026-31618                      CVE-2026-31619 CVE-2026-31622 CVE-2026-31623 CVE-2026-31624                      CVE-2026-31625 CVE-2026-31626 CVE-2026-31627 CVE-2026-31629                      CVE-2026-31630 CVE-2026-31637 CVE-2026-31642 CVE-2026-31673                      CVE-2026-31676 CVE-2026-31681 CVE-2026-31684 CVE-2026-31685                      CVE-2026-31686 CVE-2026-31696 CVE-2026-31697 CVE-2026-31698                      CVE-2026-31699 CVE-2026-31700 CVE-2026-31701 CVE-2026-31702                      CVE-2026-31704 CVE-2026-31705 CVE-2026-31708 CVE-2026-31709                      CVE-2026-31711 CVE-2026-31712 CVE-2026-31715 CVE-2026-31716                      CVE-2026-43052 CVE-2026-43058 CVE-2026-43064 CVE-2026-43071                      CVE-2026-43072 CVE-2026-43075 CVE-2026-43076 CVE-2026-43079                      CVE-2026-43080 CVE-2026-43085 CVE-2026-43089 CVE-2026-43093                      CVE-2026-43094 CVE-2026-43098 CVE-2026-43099 CVE-2026-43103                      CVE-2026-43104 CVE-2026-43105 CVE-2026-43110 CVE-2026-43111                      CVE-2026-43112 CVE-2026-43113 CVE-2026-43114 CVE-2026-43116                      CVE-2026-43117 CVE-2026-43219 CVE-2026-43303 CVE-2026-43350                      CVE-2026-43421 CVE-2026-43492 CVE-2026-43493 CVE-2026-43494                      CVE-2026-43495 CVE-2026-43496 CVE-2026-43497 CVE-2026-43499                      CVE-2026-43501 CVE-2026-43502 CVE-2026-45834 CVE-2026-45835                      CVE-2026-45836 CVE-2026-45838 CVE-2026-45839 CVE-2026-45840                      CVE-2026-45841 CVE-2026-45842 CVE-2026-45843 CVE-2026-45844                      CVE-2026-45846 CVE-2026-45850 CVE-2026-45930 CVE-2026-45986                      CVE-2026-45987 CVE-2026-45991 CVE-2026-45994 CVE-2026-45996                      CVE-2026-45997 CVE-2026-45999 CVE-2026-46002 CVE-2026-46003                      CVE-2026-46004 CVE-2026-46005 CVE-2026-46006 CVE-2026-46009                      CVE-2026-46015 CVE-2026-46018 CVE-2026-46019 CVE-2026-46021                      CVE-2026-46022 CVE-2026-46023 CVE-2026-46024 CVE-2026-46026                      CVE-2026-46027 CVE-2026-46031 CVE-2026-46033 CVE-2026-46037                      CVE-2026-46038 CVE-2026-46040 CVE-2026-46043 CVE-2026-46044                      CVE-2026-46046 CVE-2026-46047 CVE-2026-46049 CVE-2026-46050                      CVE-2026-46051 CVE-2026-46052 CVE-2026-46053 CVE-2026-46056                      CVE-2026-46058 CVE-2026-46062 CVE-2026-46064 CVE-2026-46065                      CVE-2026-46069 CVE-2026-46070 CVE-2026-46072 CVE-2026-46075                      CVE-2026-46077 CVE-2026-46078 CVE-2026-46079 CVE-2026-46080                      CVE-2026-46082 CVE-2026-46083 CVE-2026-46086 CVE-2026-46088                      CVE-2026-46091 CVE-2026-46098 CVE-2026-46099 CVE-2026-46101                      CVE-2026-46102 CVE-2026-46103 CVE-2026-46107 CVE-2026-46108                      CVE-2026-46109 CVE-2026-46110 CVE-2026-46112 CVE-2026-46113                      CVE-2026-46116 CVE-2026-46119 CVE-2026-46120 CVE-2026-46122                      CVE-2026-46123 CVE-2026-46124 CVE-2026-46125 CVE-2026-46127                      CVE-2026-46128 CVE-2026-46129 CVE-2026-46132 CVE-2026-46133                      CVE-2026-46136 CVE-2026-46137 CVE-2026-46143 CVE-2026-46146                      CVE-2026-46149 CVE-2026-46150 CVE-2026-46151 CVE-2026-46159                      CVE-2026-46160 CVE-2026-46161 CVE-2026-46163 CVE-2026-46164                      CVE-2026-46165 CVE-2026-46167 CVE-2026-46168 CVE-2026-46169                      CVE-2026-46172 CVE-2026-46173 CVE-2026-46177 CVE-2026-46178                      CVE-2026-46179 CVE-2026-46180 CVE-2026-46184 CVE-2026-46185                      CVE-2026-46186 CVE-2026-46187 CVE-2026-46189 CVE-2026-46190                      CVE-2026-46191 CVE-2026-46193 CVE-2026-46195 CVE-2026-46196                      CVE-2026-46197 CVE-2026-46198 CVE-2026-46199 CVE-2026-46205                      CVE-2026-46206 CVE-2026-46208 CVE-2026-46209 CVE-2026-46212                      CVE-2026-46214 CVE-2026-46218 CVE-2026-46220 CVE-2026-46227                      CVE-2026-46230 CVE-2026-46231 CVE-2026-46233 CVE-2026-46234                      CVE-2026-46235 CVE-2026-46236 CVE-2026-46238 CVE-2026-46273                      CVE-2026-46275 CVE-2026-46276 CVE-2026-46280 CVE-2026-46285                      CVE-2026-46291 CVE-2026-46292 CVE-2026-46294 CVE-2026-46296                      CVE-2026-46299 CVE-2026-46301 CVE-2026-46303 CVE-2026-46304                      CVE-2026-46306 CVE-2026-46307 CVE-2026-46314 CVE-2026-46319                      CVE-2026-46320 CVE-2026-46321 CVE-2026-46322 CVE-2026-46323                      CVE-2026-46331 CVE-2026-52909 CVE-2026-52910 CVE-2026-52911                      CVE-2026-52912 CVE-2026-52913 CVE-2026-52914 CVE-2026-52915                      CVE-2026-52916 CVE-2026-52917 CVE-2026-52918 CVE-2026-52919                      CVE-2026-52920 CVE-2026-52921 CVE-2026-52922 CVE-2026-52923                      CVE-2026-52924 CVE-2026-52925 CVE-2026-52926 CVE-2026-52927                      CVE-2026-52929 CVE-2026-52930 CVE-2026-52931 CVE-2026-52933                      CVE-2026-52934 CVE-2026-52935 CVE-2026-52939 CVE-2026-52941                      CVE-2026-52942 CVE-2026-52943 CVE-2026-52946 CVE-2026-52947                      CVE-2026-52948 CVE-2026-52954 CVE-2026-52955 CVE-2026-52957                      CVE-2026-52958 CVE-2026-52962 CVE-2026-52963 CVE-2026-52967                      CVE-2026-52968 CVE-2026-52969 CVE-2026-52970 CVE-2026-52972                      CVE-2026-52974 CVE-2026-52975 CVE-2026-52977 CVE-2026-52981                      CVE-2026-52982 CVE-2026-52984 CVE-2026-52985 CVE-2026-52986                      CVE-2026-52989 CVE-2026-52992 CVE-2026-52993 CVE-2026-52995                      CVE-2026-52998 CVE-2026-52999 CVE-2026-53001 CVE-2026-53002                      CVE-2026-53003 CVE-2026-53004 CVE-2026-53006 CVE-2026-53011                      CVE-2026-53012 CVE-2026-53016 CVE-2026-53021 CVE-2026-53022                      CVE-2026-53023 CVE-2026-53033 CVE-2026-53034 CVE-2026-53035                      CVE-2026-53036 CVE-2026-53037 CVE-2026-53039 CVE-2026-53040                      CVE-2026-53041 CVE-2026-53043 CVE-2026-53045 CVE-2026-53046                      CVE-2026-53047 CVE-2026-53048 CVE-2026-53049 CVE-2026-53050                      CVE-2026-53052 CVE-2026-53056 CVE-2026-53059 CVE-2026-53060                      CVE-2026-53061 CVE-2026-53062 CVE-2026-53063 CVE-2026-53064                      CVE-2026-53065 CVE-2026-53066 CVE-2026-53068 CVE-2026-53069                      CVE-2026-53071 CVE-2026-53072 CVE-2026-53073 CVE-2026-53074                      CVE-2026-53075 CVE-2026-53077 CVE-2026-53080 CVE-2026-53082                      CVE-2026-53086 CVE-2026-53088 CVE-2026-53093 CVE-2026-53096                      CVE-2026-53111 CVE-2026-53112 CVE-2026-53128 CVE-2026-53130                      CVE-2026-53131 CVE-2026-53133 CVE-2026-53134 CVE-2026-53135                      CVE-2026-53136 CVE-2026-53137 CVE-2026-53146 CVE-2026-53147                      CVE-2026-53148 CVE-2026-53149 CVE-2026-53150 CVE-2026-53159                      CVE-2026-53160 CVE-2026-53161 CVE-2026-53168 CVE-2026-53176                      CVE-2026-53177 CVE-2026-53181 CVE-2026-53182 CVE-2026-53183                      CVE-2026-53184 CVE-2026-53186 CVE-2026-53189 CVE-2026-53194                      CVE-2026-53195 CVE-2026-53196 CVE-2026-53198 CVE-2026-53199                      CVE-2026-53207 CVE-2026-53208 CVE-2026-53209 CVE-2026-53212                      CVE-2026-53213 CVE-2026-53215 CVE-2026-53216 CVE-2026-53217                      CVE-2026-53218 CVE-2026-53219 CVE-2026-53221 CVE-2026-53223                      CVE-2026-53225 CVE-2026-53227 CVE-2026-53228 CVE-2026-53236                      CVE-2026-53238 CVE-2026-53239 CVE-2026-53242 CVE-2026-53245                      CVE-2026-53249 CVE-2026-53252 CVE-2026-53253 CVE-2026-53254                      CVE-2026-53255 CVE-2026-53256 CVE-2026-53263 CVE-2026-53264                      CVE-2026-53266 CVE-2026-53268 CVE-2026-53269 CVE-2026-53270                      CVE-2026-53273 CVE-2026-53274 CVE-2026-53275 CVE-2026-53279                      CVE-2026-53287 CVE-2026-53289 CVE-2026-53291 CVE-2026-53294                      CVE-2026-53295 CVE-2026-53296 CVE-2026-53303 CVE-2026-53304                      CVE-2026-53306 CVE-2026-53309 CVE-2026-53314 CVE-2026-53320                      CVE-2026-53329 CVE-2026-53331 CVE-2026-53337 CVE-2026-53339                      CVE-2026-53343 CVE-2026-53349 CVE-2026-53350 CVE-2026-53352                      CVE-2026-53354 CVE-2026-53355 CVE-2026-53356 CVE-2026-53357     Debian Bug     : 1130365 1119093

    Several vulnerabilities have been discovered in the Linux kernel that     may lead to a privilege escalation, denial of service or information     leaks.

    For Debian 12 bookworm, these problems have been fixed in version     6.1.176-1.  This version additionally includes many more bug fixes     from stable updates 6.1.175 and 6.1.176.

    We recommend that you upgrade your linux packages.

    For the detailed security status of linux please refer to     its security tracker page at:
    https://security-tracker.debian.org/tracker/linux

    Further information about Debian LTS security advisories, how to apply     these updates to your system and frequently asked questions can be     found at: https://wiki.debian.org/LTS     Attachment:
    signature.asc     Description: PGP signature

Tenable has extracted the preceding description block directly from the Debian 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 remote Ubuntu 26.04 LTS host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-8488-1 advisory.

    It was discovered that some AMD processors did not properly clear data in the floating point divider unit     during speculative execution. A local attacker could use this to expose sensitive information.
    (CVE-2025-54505)

    Several security issues were discovered in the Linux kernel. An attacker could possibly use these to     compromise the system. This update corrects flaws in the following subsystems:

    - ARM64 architecture;

    - x86 architecture;

    - Block layer subsystem;

    - Cryptographic API;

    - Rados block device (RBD) driver;

    - Compressed RAM block device driver;

    - Character device driver;

    - TPM device driver;

    - Hardware crypto device drivers;

    - EDAC drivers;

    - GPU drivers;

    - Greybus drivers;

    - HID subsystem;

    - Microsoft Hyper-V drivers;

    - Hardware monitoring drivers;

    - I2C subsystem;

    - IIO subsystem;

    - InfiniBand drivers;

    - Input Device core drivers;

    - LED subsystem;

    - Multiple devices driver;

    - Media drivers;

    - IBM Advanced System Management driver;

    - MTD block device drivers;

    - Network drivers;

    - Microsoft Azure Network Adapter (MANA) driver;

    - NTB driver;

    - NVME drivers;

    - Device tree and open firmware driver;

    - PCI subsystem;

    - Remote Processor subsystem;

    - SCSI subsystem;

    - SPI subsystem;

    - Realtek RTL8723BS SDIO drivers;

    - SM750 framebuffer staging driver;

    - Thermal drivers;

    - USB Gadget drivers;

    - USB over IP driver;

    - VFIO drivers;

    - Framebuffer layer;

    - 9P distributed file system;

    - AFS file system;

    - Ceph distributed file system;

    - File systems infrastructure;

    - EROFS file system;

    - Ext4 file system;

    - F2FS file system;

    - FUSE (File system in Userspace);

    - Journaling layer for block devices (JBD2);

    - NILFS2 file system;

    - File system notification infrastructure;

    - NTFS3 file system;

    - OCFS2 file system;

    - SMB network file system;

    - UDF file system;

    - XFS file system;

    - Codetag library;

    - Memory management;

    - Memory Management;

    - KVM subsystem;

    - Tracing infrastructure;

    - User-space API (UAPI);

    - io_uring subsystem;

    - Locking primitives;

    - Timer subsystem;

    - Scatterlist API;

    - Heterogeneous memory management;

    - KASAN memory debugging framework;

    - Bluetooth subsystem;

    - Ethernet bridge;

    - CAIF protocol;

    - CAN network layer;

    - Ceph Core library;

    - IPv4 networking;

    - IPv6 networking;

    - Multipath TCP;

    - Netfilter;

    - NFC subsystem;

    - Packet sockets;

    - Qualcomm IPC Router (QRTR);

    - RDS protocol;

    - RxRPC session sockets;

    - SMC sockets;

    - Stream parser;

    - Landlock security;

    - SELinux security module;

    - ALSA framework;

    - Generic PCM loopback sound driver;

    - FireWire sound drivers;

    - Creative Sound Blaster X-Fi driver;

    - QCOM ASoC drivers;

    - USB sound devices;

    - Objtool; (CVE-2026-31532, CVE-2026-31574, CVE-2026-31575, CVE-2026-31576, CVE-2026-31577,     CVE-2026-31578, CVE-2026-31579, CVE-2026-31580, CVE-2026-31581, CVE-2026-31582, CVE-2026-31583,     CVE-2026-31584, CVE-2026-31585, CVE-2026-31586, CVE-2026-31587, CVE-2026-31588, CVE-2026-31589,     CVE-2026-31590, CVE-2026-31591, CVE-2026-31592, CVE-2026-31593, CVE-2026-31594, CVE-2026-31595,     CVE-2026-31596, CVE-2026-31597, CVE-2026-31598, CVE-2026-31599, CVE-2026-31600, CVE-2026-31601,     CVE-2026-31602, CVE-2026-31603, CVE-2026-31604, CVE-2026-31605, CVE-2026-31606, CVE-2026-31607,     CVE-2026-31608, CVE-2026-31609, CVE-2026-31610, CVE-2026-31611, CVE-2026-31612, CVE-2026-31613,     CVE-2026-31614, CVE-2026-31615, CVE-2026-31616, CVE-2026-31617, CVE-2026-31618, CVE-2026-31619,     CVE-2026-31620, CVE-2026-31621, CVE-2026-31622, CVE-2026-31623, CVE-2026-31624, CVE-2026-31625,     CVE-2026-31626, CVE-2026-31627, CVE-2026-31628, CVE-2026-31629, CVE-2026-31686, CVE-2026-31694,     CVE-2026-31696, CVE-2026-31697, CVE-2026-31698, CVE-2026-31699, CVE-2026-31700, CVE-2026-31701,     CVE-2026-31702, CVE-2026-31703, CVE-2026-31704, CVE-2026-31705, CVE-2026-31706, CVE-2026-31707,     CVE-2026-31708, CVE-2026-31709, CVE-2026-31710, CVE-2026-31711, CVE-2026-31712, CVE-2026-31713,     CVE-2026-31714, CVE-2026-31715, CVE-2026-31716, CVE-2026-31717, CVE-2026-31718, CVE-2026-31719,     CVE-2026-43058, CVE-2026-43071, CVE-2026-43072, CVE-2026-43073, CVE-2026-43348, CVE-2026-43349,     CVE-2026-43350, CVE-2026-43491, CVE-2026-43493, CVE-2026-43499, CVE-2026-43501, CVE-2026-45986,     CVE-2026-45987, CVE-2026-45988, CVE-2026-45989, CVE-2026-45990, CVE-2026-45991, CVE-2026-45994,     CVE-2026-45995, CVE-2026-45996, CVE-2026-45997, CVE-2026-45999, CVE-2026-46001, CVE-2026-46002,     CVE-2026-46003, CVE-2026-46004, CVE-2026-46005, CVE-2026-46006, CVE-2026-46007, CVE-2026-46008,     CVE-2026-46009, CVE-2026-46010, CVE-2026-46011, CVE-2026-46012, CVE-2026-46013, CVE-2026-46014,     CVE-2026-46015, CVE-2026-46016, CVE-2026-46018, CVE-2026-46019, CVE-2026-46020, CVE-2026-46021,     CVE-2026-46022, CVE-2026-46023, CVE-2026-46024, CVE-2026-46025, CVE-2026-46026, CVE-2026-46027,     CVE-2026-46028, CVE-2026-46029, CVE-2026-46030, CVE-2026-46031, CVE-2026-46032, CVE-2026-46033,     CVE-2026-46034, CVE-2026-46035, CVE-2026-46036, CVE-2026-46037, CVE-2026-46038, CVE-2026-46039,     CVE-2026-46040, CVE-2026-46041, CVE-2026-46042, CVE-2026-46043, CVE-2026-46044, CVE-2026-46045,     CVE-2026-46046, CVE-2026-46047, CVE-2026-46049, CVE-2026-46050, CVE-2026-46051, CVE-2026-46052,     CVE-2026-46053, CVE-2026-46054, CVE-2026-46056, CVE-2026-46057, CVE-2026-46058, CVE-2026-46059,     CVE-2026-46060, CVE-2026-46061, CVE-2026-46062, CVE-2026-46063, CVE-2026-46064, CVE-2026-46065,     CVE-2026-46066, CVE-2026-46067, CVE-2026-46068, CVE-2026-46069, CVE-2026-46070, CVE-2026-46071,     CVE-2026-46072, CVE-2026-46073, CVE-2026-46074, CVE-2026-46075, CVE-2026-46076, CVE-2026-46077,     CVE-2026-46078, CVE-2026-46079, CVE-2026-46080, CVE-2026-46081, CVE-2026-46082, CVE-2026-46083,     CVE-2026-46084, CVE-2026-46085, CVE-2026-46086, CVE-2026-46087, CVE-2026-46088, CVE-2026-46089,     CVE-2026-46090, CVE-2026-46091, CVE-2026-46092, CVE-2026-46093, CVE-2026-46094, CVE-2026-46095,     CVE-2026-46096, CVE-2026-46097, CVE-2026-46098, CVE-2026-46099, CVE-2026-46100, CVE-2026-46101,     CVE-2026-46102, CVE-2026-46103, CVE-2026-46115, CVE-2026-46119, CVE-2026-46135, CVE-2026-46137,     CVE-2026-46155, CVE-2026-46185, CVE-2026-46195, CVE-2026-46243, CVE-2026-46244, CVE-2026-46276,     CVE-2026-46277, CVE-2026-46278, CVE-2026-46279, CVE-2026-46280, CVE-2026-46281, CVE-2026-46282,     CVE-2026-46283, CVE-2026-46284, CVE-2026-46285, CVE-2026-46286, CVE-2026-46287, CVE-2026-46288,     CVE-2026-46289, CVE-2026-46316, CVE-2026-46332, CVE-2026-52904, CVE-2026-52905, CVE-2026-52906,     CVE-2026-52907, CVE-2026-52933)

Tenable has extracted the preceding description block directly from the Ubuntu 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.

  - f2fs: fix use-after-free of sbi in f2fs_compress_write_end_io() In f2fs_compress_write_end_io(),     dec_page_count(sbi, type) can bring the F2FS_WB_CP_DATA counter to zero, unblocking     f2fs_wait_on_all_pages() in f2fs_put_super() on a concurrent unmount CPU. The unmount path then proceeds     to call f2fs_destroy_page_array_cache(sbi), which destroys sbi->page_array_slab via kmem_cache_destroy(),     and eventually kfree(sbi). Meanwhile, the bio completion callback is still executing: when it reaches     page_array_free(sbi, ...), it dereferences sbi->page_array_slab  a destroyed slab cache  to call     kmem_cache_free(), causing a use-after-free. This is the same class of bug as CVE-2026-23234 (which fixed     the equivalent race in f2fs_write_end_io() in data.c), but in the compressed writeback completion path     that was not covered by that fix. Fix this by moving dec_page_count() to after page_array_free(), so that     all sbi accesses complete before the counter decrement that can unblock unmount. For non-last folios     (where atomic_dec_return on cic->pending_pages is nonzero), dec_page_count is called immediately before     returning  page_array_free is not reached on this path, so there is no post-decrement sbi access. For the     last folio, page_array_free runs while the F2FS_WB_CP_DATA counter is still nonzero (this folio has not     yet decremented it), keeping sbi alive, and dec_page_count runs as the final operation. (CVE-2026-31702)

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

ID	Name	Product	Family	Severity
325059	Debian dla-4665 : affs-modules-6.1.0-48-4kc-malta-di - security update	Nessus	Debian Local Security Checks	high
325017	Ubuntu 26.04 LTS : Linux kernel vulnerabilities (USN-8488-1)	Nessus	Ubuntu Local Security Checks	low
311569	Linux Distros Unpatched Vulnerability : CVE-2026-31702	Nessus	Misc.	high

Detections

Analytics

CVE-2026-31702

high

Tenable Plugins

high

low

high