fkie_cve-2022-48628
Vulnerability from fkie_nvd
Published
2024-03-02 22:15
Modified
2025-01-13 18:26
Severity ?
Summary
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:
<TASK>
generic_shutdown_super+0x47/0x120
kill_anon_super+0x14/0x30
ceph_kill_sb+0x36/0x90 [ceph]
deactivate_locked_super+0x29/0x60
cleanup_mnt+0xb8/0x140
task_work_run+0x67/0xb0
exit_to_user_mode_prepare+0x23d/0x240
syscall_exit_to_user_mode+0x25/0x60
do_syscall_64+0x40/0x80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7fd83dc39e9b
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().
References
Impacted products
| Vendor | Product | Version | |
|---|---|---|---|
| linux | linux_kernel | * | |
| linux | linux_kernel | * |
{
"configurations": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"matchCriteriaId": "9889AA5E-5419-4E5A-8A95-FB5F9494E850",
"versionEndExcluding": "6.1.56",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"matchCriteriaId": "870FC772-173A-4A0F-B1AF-7976AD6057D3",
"versionEndExcluding": "6.5.6",
"versionStartIncluding": "6.2",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
]
}
],
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "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()."
},
{
"lang": "es",
"value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: ceph: elimina mensajes de MDS al desmontar. Al desmontar, todos los buffers sucios se vaciar\u00e1n y, una vez finalizada la \u00faltima solicitud de osd, se liberar\u00e1 la \u00faltima referencia de i_count. Luego, eliminar\u00e1 la tapa sucia/se ajustar\u00e1 a los MDS, y el desmontaje no esperar\u00e1 los posibles ataques, lo que retendr\u00e1 los inodos al actualizar los metadatos localmente, pero esto ya no tiene sentido. Esto har\u00e1 que evict_inodes() omita estos inodos. Si el cifrado est\u00e1 habilitado, el kernel genera una advertencia al eliminar las claves de cifrado cuando los inodos omitidos a\u00fan contienen el llavero: ADVERTENCIA: CPU: 4 PID: 168846 en fs/crypto/keyring.c:242 fscrypt_destroy_keyring+0x7e/0xd0 CPU: 4 PID : 168846 Comm: desmontaje Contaminado: GS 6.1.0-rc5-ceph-g72ead199864c #1 Nombre del hardware: Supermicro SYS-5018R-WR/X10SRW-F, BIOS 2.0 17/12/2015 RIP: 0010:fscrypt_destroy_keyring+0x7e/0xd0 RSP : 0018:ffffc9000b277e28 EFLAGS: 00010202 RAX: 0000000000000002 RBX: ffff88810d52ac00 RCX: ffff88810b56aa00 RDX: 0000000080000000 RSI: ffffffff822f 3a09 RDI: ffff888108f59000 RBP: ffff8881d394fb88 R08: 0000000000000028 R09: 00000000000000000 R10: 00000000000000001 R11: 11ff4fe6834fcd91 R12: ffff8881d394fc40 R13: ffff888108f59000 R14: ffff8881d394f800 R15 : 0000000000000000 FS: 00007fd83f6f1080(0000) GS:ffff88885fd00000(0000) knlGS:00000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005 0033 CR2: 00007f918d417000 CR3: 000000017f89a005 CR4: 00000000003706e0 DR0: 00000000000000000 DR1: 00000000000000000 DR2: 00000000000000000 DR 3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Seguimiento de llamadas: generic_shutdown_super+0x47/0x120 kill_anon_super+0x14/0x30 ceph_kill_sb+0x36/0x90 [ceph] deactivate_locked_super+0x29/0x60 cleanup_mnt+0 xb8/0x140 task_work_run+0x67/0xb0 exit_to_user_mode_prepare+0x23d/0x240 syscall_exit_to_user_mode+0x25/0x60 do_syscall_64+0x40/0x80 Entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7fd83dc39e9b M\u00e1s tarde, el kernel fallar\u00e1 cuando iput() los inodos y desreferencia el \"sb-\u0026gt;s_master_keys\", que ha sido liberado por generic_shutdown_super() ."
}
],
"id": "CVE-2022-48628",
"lastModified": "2025-01-13T18:26:13.343",
"metrics": {
"cvssMetricV31": [
{
"cvssData": {
"attackComplexity": "LOW",
"attackVector": "LOCAL",
"availabilityImpact": "HIGH",
"baseScore": 5.5,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"privilegesRequired": "LOW",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
"version": "3.1"
},
"exploitabilityScore": 1.8,
"impactScore": 3.6,
"source": "nvd@nist.gov",
"type": "Primary"
}
]
},
"published": "2024-03-02T22:15:47.000",
"references": [
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"tags": [
"Patch"
],
"url": "https://git.kernel.org/stable/c/47f82395f04a976d4fa97de7f2acffa1c1096571"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"tags": [
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"url": "https://git.kernel.org/stable/c/89744b64914426cbabceb3d8a149176b5dafdfb5"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"tags": [
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"url": "https://git.kernel.org/stable/c/e3dfcab2080dc1f9a4b09cc1327361bc2845bfcd"
},
{
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"tags": [
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"url": "https://git.kernel.org/stable/c/47f82395f04a976d4fa97de7f2acffa1c1096571"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
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"url": "https://git.kernel.org/stable/c/89744b64914426cbabceb3d8a149176b5dafdfb5"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
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"url": "https://git.kernel.org/stable/c/e3dfcab2080dc1f9a4b09cc1327361bc2845bfcd"
}
],
"sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"vulnStatus": "Analyzed",
"weaknesses": [
{
"description": [
{
"lang": "en",
"value": "NVD-CWE-noinfo"
}
],
"source": "nvd@nist.gov",
"type": "Primary"
}
]
}
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Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- 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.
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