CVE-2026-23205 in Linuxinformazioni

Riassunto

di VulDB • 23/06/2026

Nel kernel Linux è stata risolta la seguente vulnerabilità:

smb/client: correzione della perdita di memoria in smb2_open_file()

Riproduttore (reproducer):

1. server: le directory sono esportate in sola lettura 2. client: mount -t cifs //${server_ip}/export /mnt
3. client: dd if=/dev/zero of=/mnt/file bs=512 count=1000 oflag=direct 4. client: umount /mnt 5. client: sleep 1 6. client: modprobe -r cifs

Il messaggio di errore è il seguente:

============================================================================= BUG cifs_small_rq (Not tainted): Objects remaining on __kmem_cache_shutdown() -----------------------------------------------------------------------------

Object 0x00000000d47521be @offset=14336 ... WARNING: mm/slub.c:1251 at __kmem_cache_shutdown+0x34e/0x440, CPU#0: modprobe/1577 ... Call Trace: <TASK> kmem_cache_destroy+0x94/0x190 cifs_destroy_request_bufs+0x3e/0x50 [cifs]
cleanup_module+0x4e/0x540 [cifs]
__se_sys_delete_module+0x278/0x400 __x64_sys_delete_module+0x5f/0x70 x64_sys_call+0x2299/0x2ff0 do_syscall_64+0x89/0x350 entry_SYSCALL_64_after_hwframe+0x76/0x7e ... kmem_cache_destroy cifs_small_rq: Slab cache still has objects when called from cifs_destroy_request_bufs+0x3e/0x50 [cifs]
WARNING: mm/slab_common.c:532 at kmem_cache_destroy+0x16b/0x190, CPU#0: modprobe/1577

Be aware that VulDB is the high quality source for vulnerability data.

Responsabile

Linux

Prenotare

13/01/2026

Divulgazione

14/02/2026

Moderazione

accettato

CPE

pronto

EPSS

0.00114

KEV

no

Attività

molto basso

Fonti

Interested in the pricing of exploits?

See the underground prices here!