ghsa-c3wm-p2jr-8f5g
Vulnerability from github
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->ses_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]
{
"affected": [],
"aliases": [
"CVE-2023-52752"
],
"database_specific": {
"cwe_ids": [
"CWE-416"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2024-05-21T16:15:14Z",
"severity": "HIGH"
},
"details": "In the Linux kernel, the following vulnerability has been resolved:\n\nsmb: client: fix use-after-free bug in cifs_debug_data_proc_show()\n\nSkip SMB sessions that are being teared down\n(e.g. @ses-\u003eses_status == SES_EXITING) in cifs_debug_data_proc_show()\nto avoid use-after-free in @ses.\n\nThis fixes the following GPF when reading from /proc/fs/cifs/DebugData\nwhile mounting and umounting\n\n [ 816.251274] general protection fault, probably for non-canonical\n address 0x6b6b6b6b6b6b6d81: 0000 [#1] PREEMPT SMP NOPTI\n ...\n [ 816.260138] Call Trace:\n [ 816.260329] \u003cTASK\u003e\n [ 816.260499] ? die_addr+0x36/0x90\n [ 816.260762] ? exc_general_protection+0x1b3/0x410\n [ 816.261126] ? asm_exc_general_protection+0x26/0x30\n [ 816.261502] ? cifs_debug_tcon+0xbd/0x240 [cifs]\n [ 816.261878] ? cifs_debug_tcon+0xab/0x240 [cifs]\n [ 816.262249] cifs_debug_data_proc_show+0x516/0xdb0 [cifs]\n [ 816.262689] ? seq_read_iter+0x379/0x470\n [ 816.262995] seq_read_iter+0x118/0x470\n [ 816.263291] proc_reg_read_iter+0x53/0x90\n [ 816.263596] ? srso_alias_return_thunk+0x5/0x7f\n [ 816.263945] vfs_read+0x201/0x350\n [ 816.264211] ksys_read+0x75/0x100\n [ 816.264472] do_syscall_64+0x3f/0x90\n [ 816.264750] entry_SYSCALL_64_after_hwframe+0x6e/0xd8\n [ 816.265135] RIP: 0033:0x7fd5e669d381",
"id": "GHSA-c3wm-p2jr-8f5g",
"modified": "2024-06-03T18:55:25Z",
"published": "2024-05-21T18:31:20Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2023-52752"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/0ab6f842452ce2cae04209d4671ac6289d0aef8a"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/558817597d5fbd7af31f891b67b0fd20f0d047b7"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/89929ea46f9cc11ba66d2c64713aa5d5dc723b09"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/d328c09ee9f15ee5a26431f5aad7c9239fa85e62"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}