{"id":"DEBIAN-CVE-2023-52752","details":"In the Linux kernel, the following vulnerability has been resolved:  smb: client: fix use-after-free bug in cifs_debug_data_proc_show()  Skip SMB sessions that are being teared down (e.g. @ses-\u003eses_status == SES_EXITING) in cifs_debug_data_proc_show() to avoid use-after-free in @ses.  This fixes the following GPF when reading from /proc/fs/cifs/DebugData while mounting and umounting    [ 816.251274] general protection fault, probably for non-canonical   address 0x6b6b6b6b6b6b6d81: 0000 [#1] PREEMPT SMP NOPTI   ...   [  816.260138] Call Trace:   [  816.260329]  \u003cTASK\u003e   [  816.260499]  ? die_addr+0x36/0x90   [  816.260762]  ? exc_general_protection+0x1b3/0x410   [  816.261126]  ? asm_exc_general_protection+0x26/0x30   [  816.261502]  ? cifs_debug_tcon+0xbd/0x240 [cifs]   [  816.261878]  ? cifs_debug_tcon+0xab/0x240 [cifs]   [  816.262249]  cifs_debug_data_proc_show+0x516/0xdb0 [cifs]   [  816.262689]  ? seq_read_iter+0x379/0x470   [  816.262995]  seq_read_iter+0x118/0x470   [  816.263291]  proc_reg_read_iter+0x53/0x90   [  816.263596]  ? srso_alias_return_thunk+0x5/0x7f   [  816.263945]  vfs_read+0x201/0x350   [  816.264211]  ksys_read+0x75/0x100   [  816.264472]  do_syscall_64+0x3f/0x90   [  816.264750]  entry_SYSCALL_64_after_hwframe+0x6e/0xd8   [  816.265135] RIP: 0033:0x7fd5e669d381","modified":"2026-09-15T09:02:48.689051636Z","published":"2024-05-21T16:15:14.833Z","upstream":["CVE-2023-52752"],"references":[{"type":"ADVISORY","url":"https://security-tracker.debian.org/tracker/CVE-2023-52752"}],"affected":[{"package":{"name":"linux","ecosystem":"Debian:12","purl":"pkg:deb/debian/linux?arch=source&distro=bookworm"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.1.64-1"}]}],"versions":["6.1.27-1","6.1.37-1","6.1.38-1","6.1.38-2","6.1.38-2~bpo11+1","6.1.38-3","6.1.38-4","6.1.38-4~bpo11+1","6.1.52-1","6.1.55-1","6.1.55-1~bpo11+1"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2023-52752.json"}},{"package":{"name":"linux","ecosystem":"Debian:13","purl":"pkg:deb/debian/linux?arch=source&distro=trixie"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.6.8-1"}]}],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2023-52752.json"}},{"package":{"name":"linux","ecosystem":"Debian:14","purl":"pkg:deb/debian/linux?arch=source&distro=forky"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.6.8-1"}]}],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2023-52752.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"}]}