ghsa-86jx-fj9h-9hp8
Vulnerability from github
In the Linux kernel, the following vulnerability has been resolved:
ceph: drop messages from MDS when unmounting
When unmounting all the dirty buffers will be flushed and after the last osd request is finished the last reference of the i_count will be released. Then it will flush the dirty cap/snap to MDSs, and the unmounting won't wait the possible acks, which will ihold the inodes when updating the metadata locally but makes no sense any more, of this. This will make the evict_inodes() to skip these inodes.
If encrypt is enabled the kernel generate a warning when removing the encrypt keys when the skipped inodes still hold the keyring:
WARNING: CPU: 4 PID: 168846 at fs/crypto/keyring.c:242 fscrypt_destroy_keyring+0x7e/0xd0
CPU: 4 PID: 168846 Comm: umount Tainted: G S 6.1.0-rc5-ceph-g72ead199864c #1
Hardware name: Supermicro SYS-5018R-WR/X10SRW-F, BIOS 2.0 12/17/2015
RIP: 0010:fscrypt_destroy_keyring+0x7e/0xd0
RSP: 0018:ffffc9000b277e28 EFLAGS: 00010202
RAX: 0000000000000002 RBX: ffff88810d52ac00 RCX: ffff88810b56aa00
RDX: 0000000080000000 RSI: ffffffff822f3a09 RDI: ffff888108f59000
RBP: ffff8881d394fb88 R08: 0000000000000028 R09: 0000000000000000
R10: 0000000000000001 R11: 11ff4fe6834fcd91 R12: ffff8881d394fc40
R13: ffff888108f59000 R14: ffff8881d394f800 R15: 0000000000000000
FS: 00007fd83f6f1080(0000) GS:ffff88885fd00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f918d417000 CR3: 000000017f89a005 CR4: 00000000003706e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
Later the kernel will crash when iput() the inodes and dereferencing the "sb->s_master_keys", which has been released by the generic_shutdown_super().
{
"affected": [],
"aliases": [
"CVE-2022-48628"
],
"database_specific": {
"cwe_ids": [],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2024-03-02T22:15:47Z",
"severity": null
},
"details": "In the Linux kernel, the following vulnerability has been resolved:\n\nceph: drop messages from MDS when unmounting\n\nWhen unmounting all the dirty buffers will be flushed and after\nthe last osd request is finished the last reference of the i_count\nwill be released. Then it will flush the dirty cap/snap to MDSs,\nand the unmounting won\u0027t wait the possible acks, which will ihold\nthe inodes when updating the metadata locally but makes no sense\nany more, of this. This will make the evict_inodes() to skip these\ninodes.\n\nIf encrypt is enabled the kernel generate a warning when removing\nthe encrypt keys when the skipped inodes still hold the keyring:\n\nWARNING: CPU: 4 PID: 168846 at fs/crypto/keyring.c:242 fscrypt_destroy_keyring+0x7e/0xd0\nCPU: 4 PID: 168846 Comm: umount Tainted: G S 6.1.0-rc5-ceph-g72ead199864c #1\nHardware name: Supermicro SYS-5018R-WR/X10SRW-F, BIOS 2.0 12/17/2015\nRIP: 0010:fscrypt_destroy_keyring+0x7e/0xd0\nRSP: 0018:ffffc9000b277e28 EFLAGS: 00010202\nRAX: 0000000000000002 RBX: ffff88810d52ac00 RCX: ffff88810b56aa00\nRDX: 0000000080000000 RSI: ffffffff822f3a09 RDI: ffff888108f59000\nRBP: ffff8881d394fb88 R08: 0000000000000028 R09: 0000000000000000\nR10: 0000000000000001 R11: 11ff4fe6834fcd91 R12: ffff8881d394fc40\nR13: ffff888108f59000 R14: ffff8881d394f800 R15: 0000000000000000\nFS: 00007fd83f6f1080(0000) GS:ffff88885fd00000(0000) knlGS:0000000000000000\nCS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033\nCR2: 00007f918d417000 CR3: 000000017f89a005 CR4: 00000000003706e0\nDR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000\nDR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400\nCall Trace:\n\u003cTASK\u003e\ngeneric_shutdown_super+0x47/0x120\nkill_anon_super+0x14/0x30\nceph_kill_sb+0x36/0x90 [ceph]\ndeactivate_locked_super+0x29/0x60\ncleanup_mnt+0xb8/0x140\ntask_work_run+0x67/0xb0\nexit_to_user_mode_prepare+0x23d/0x240\nsyscall_exit_to_user_mode+0x25/0x60\ndo_syscall_64+0x40/0x80\nentry_SYSCALL_64_after_hwframe+0x63/0xcd\nRIP: 0033:0x7fd83dc39e9b\n\nLater the kernel will crash when iput() the inodes and dereferencing\nthe \"sb-\u003es_master_keys\", which has been released by the\ngeneric_shutdown_super().",
"id": "GHSA-86jx-fj9h-9hp8",
"modified": "2024-03-03T00:30:30Z",
"published": "2024-03-03T00:30:30Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2022-48628"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/47f82395f04a976d4fa97de7f2acffa1c1096571"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/89744b64914426cbabceb3d8a149176b5dafdfb5"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/e3dfcab2080dc1f9a4b09cc1327361bc2845bfcd"
}
],
"schema_version": "1.4.0",
"severity": []
}
Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
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- Confirmed: The vulnerability is confirmed from an analyst perspective.
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- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.