CVE-2023-52434 (GCVE-0-2023-52434)
Vulnerability from cvelistv5 – Published: 2024-02-20 18:04 – Updated: 2026-08-05 09:09
VLAI
EPSS
VEX
Title
smb: client: fix potential OOBs in smb2_parse_contexts()
Summary
In the Linux kernel, the following vulnerability has been resolved:
smb: client: fix potential OOBs in smb2_parse_contexts()
Validate offsets and lengths before dereferencing create contexts in
smb2_parse_contexts().
This fixes following oops when accessing invalid create contexts from
server:
BUG: unable to handle page fault for address: ffff8881178d8cc3
#PF: supervisor read access in kernel mode
#PF: error_code(0x0000) - not-present page
PGD 4a01067 P4D 4a01067 PUD 0
Oops: 0000 [#1] PREEMPT SMP NOPTI
CPU: 3 PID: 1736 Comm: mount.cifs Not tainted 6.7.0-rc4 #1
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS
rel-1.16.2-3-gd478f380-rebuilt.opensuse.org 04/01/2014
RIP: 0010:smb2_parse_contexts+0xa0/0x3a0 [cifs]
Code: f8 10 75 13 48 b8 93 ad 25 50 9c b4 11 e7 49 39 06 0f 84 d2 00
00 00 8b 45 00 85 c0 74 61 41 29 c5 48 01 c5 41 83 fd 0f 76 55 <0f> b7
7d 04 0f b7 45 06 4c 8d 74 3d 00 66 83 f8 04 75 bc ba 04 00
RSP: 0018:ffffc900007939e0 EFLAGS: 00010216
RAX: ffffc90000793c78 RBX: ffff8880180cc000 RCX: ffffc90000793c90
RDX: ffffc90000793cc0 RSI: ffff8880178d8cc0 RDI: ffff8880180cc000
RBP: ffff8881178d8cbf R08: ffffc90000793c22 R09: 0000000000000000
R10: ffff8880180cc000 R11: 0000000000000024 R12: 0000000000000000
R13: 0000000000000020 R14: 0000000000000000 R15: ffffc90000793c22
FS: 00007f873753cbc0(0000) GS:ffff88806bc00000(0000)
knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffff8881178d8cc3 CR3: 00000000181ca000 CR4: 0000000000750ef0
PKRU: 55555554
Call Trace:
<TASK>
? __die+0x23/0x70
? page_fault_oops+0x181/0x480
? search_module_extables+0x19/0x60
? srso_alias_return_thunk+0x5/0xfbef5
? exc_page_fault+0x1b6/0x1c0
? asm_exc_page_fault+0x26/0x30
? smb2_parse_contexts+0xa0/0x3a0 [cifs]
SMB2_open+0x38d/0x5f0 [cifs]
? smb2_is_path_accessible+0x138/0x260 [cifs]
smb2_is_path_accessible+0x138/0x260 [cifs]
cifs_is_path_remote+0x8d/0x230 [cifs]
cifs_mount+0x7e/0x350 [cifs]
cifs_smb3_do_mount+0x128/0x780 [cifs]
smb3_get_tree+0xd9/0x290 [cifs]
vfs_get_tree+0x2c/0x100
? capable+0x37/0x70
path_mount+0x2d7/0xb80
? srso_alias_return_thunk+0x5/0xfbef5
? _raw_spin_unlock_irqrestore+0x44/0x60
__x64_sys_mount+0x11a/0x150
do_syscall_64+0x47/0xf0
entry_SYSCALL_64_after_hwframe+0x6f/0x77
RIP: 0033:0x7f8737657b1e
Severity
8.1 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-02-20 19:31 UTC
Assigner
References
8 references
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| Linux | Linux |
Affected:
b8c32dbb0deb287a5fcb78251e4eae6c7275760d , < 6726429c18c62dbf5e96ebbd522f262e016553fb
(git)
Affected: b8c32dbb0deb287a5fcb78251e4eae6c7275760d , < 13fb0fc4917621f3dfa285a27eaf7151d770b5e5 (git) Affected: b8c32dbb0deb287a5fcb78251e4eae6c7275760d , < 890bc4fac3c0973a49cac35f634579bebba7fe48 (git) Affected: b8c32dbb0deb287a5fcb78251e4eae6c7275760d , < 1ae3c59355dc9882e09c020afe8ffbd895ad0f29 (git) Affected: b8c32dbb0deb287a5fcb78251e4eae6c7275760d , < 17a0f64cc02d4972e21c733d9f21d1c512963afa (git) Affected: b8c32dbb0deb287a5fcb78251e4eae6c7275760d , < af1689a9b7701d9907dfc84d2a4b57c4bc907144 (git) |
|
| Linux | Linux |
Affected:
3.7
Unaffected: 0 , < 3.7 (semver) Unaffected: 5.4.277 , ≤ 5.4.* (semver) Unaffected: 5.10.211 , ≤ 5.10.* (semver) Unaffected: 5.15.150 , ≤ 5.15.* (semver) Unaffected: 6.1.79 , ≤ 6.1.* (semver) Unaffected: 6.6.8 , ≤ 6.6.* (semver) Unaffected: 6.7 , ≤ * (original_commit_for_fix) |
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"descriptions": "[{\"lang\": \"en\", \"value\": \"In the Linux kernel, the following vulnerability has been resolved:\\n\\nsmb: client: fix potential OOBs in smb2_parse_contexts()\\n\\nValidate offsets and lengths before dereferencing create contexts in\\nsmb2_parse_contexts().\\n\\nThis fixes following oops when accessing invalid create contexts from\\nserver:\\n\\n BUG: unable to handle page fault for address: ffff8881178d8cc3\\n #PF: supervisor read access in kernel mode\\n #PF: error_code(0x0000) - not-present page\\n PGD 4a01067 P4D 4a01067 PUD 0\\n Oops: 0000 [#1] PREEMPT SMP NOPTI\\n CPU: 3 PID: 1736 Comm: mount.cifs Not tainted 6.7.0-rc4 #1\\n Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS\\n rel-1.16.2-3-gd478f380-rebuilt.opensuse.org 04/01/2014\\n RIP: 0010:smb2_parse_contexts+0xa0/0x3a0 [cifs]\\n Code: f8 10 75 13 48 b8 93 ad 25 50 9c b4 11 e7 49 39 06 0f 84 d2 00\\n 00 00 8b 45 00 85 c0 74 61 41 29 c5 48 01 c5 41 83 fd 0f 76 55 \u003c0f\u003e b7\\n 7d 04 0f b7 45 06 4c 8d 74 3d 00 66 83 f8 04 75 bc ba 04 00\\n RSP: 0018:ffffc900007939e0 EFLAGS: 00010216\\n RAX: ffffc90000793c78 RBX: ffff8880180cc000 RCX: ffffc90000793c90\\n RDX: ffffc90000793cc0 RSI: ffff8880178d8cc0 RDI: ffff8880180cc000\\n RBP: ffff8881178d8cbf R08: ffffc90000793c22 R09: 0000000000000000\\n R10: ffff8880180cc000 R11: 0000000000000024 R12: 0000000000000000\\n R13: 0000000000000020 R14: 0000000000000000 R15: ffffc90000793c22\\n FS: 00007f873753cbc0(0000) GS:ffff88806bc00000(0000)\\n knlGS:0000000000000000\\n CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033\\n CR2: ffff8881178d8cc3 CR3: 00000000181ca000 CR4: 0000000000750ef0\\n PKRU: 55555554\\n Call Trace:\\n \u003cTASK\u003e\\n ? __die+0x23/0x70\\n ? page_fault_oops+0x181/0x480\\n ? search_module_extables+0x19/0x60\\n ? srso_alias_return_thunk+0x5/0xfbef5\\n ? exc_page_fault+0x1b6/0x1c0\\n ? asm_exc_page_fault+0x26/0x30\\n ? smb2_parse_contexts+0xa0/0x3a0 [cifs]\\n SMB2_open+0x38d/0x5f0 [cifs]\\n ? smb2_is_path_accessible+0x138/0x260 [cifs]\\n smb2_is_path_accessible+0x138/0x260 [cifs]\\n cifs_is_path_remote+0x8d/0x230 [cifs]\\n cifs_mount+0x7e/0x350 [cifs]\\n cifs_smb3_do_mount+0x128/0x780 [cifs]\\n smb3_get_tree+0xd9/0x290 [cifs]\\n vfs_get_tree+0x2c/0x100\\n ? capable+0x37/0x70\\n path_mount+0x2d7/0xb80\\n ? srso_alias_return_thunk+0x5/0xfbef5\\n ? _raw_spin_unlock_irqrestore+0x44/0x60\\n __x64_sys_mount+0x11a/0x150\\n do_syscall_64+0x47/0xf0\\n entry_SYSCALL_64_after_hwframe+0x6f/0x77\\n RIP: 0033:0x7f8737657b1e\"}, {\"lang\": \"es\", \"value\": \"En el kernel de Linux, se resolvi\\u00f3 la siguiente vulnerabilidad: smb: cliente: corrige OOB potenciales en smb2_parse_contexts() Valida compensaciones y longitudes antes de desreferenciar crea contextos en smb2_parse_contexts(). Esto corrige los siguientes errores al acceder a contextos de creaci\\u00f3n no v\\u00e1lidos desde el servidor: ERROR: no se puede manejar el error de p\\u00e1gina para la direcci\\u00f3n: ffff8881178d8cc3 #PF: acceso de lectura del supervisor en modo kernel #PF: error_code(0x0000) - p\\u00e1gina no presente PGD 4a01067 P4D 4a01067 PUD 0 Ups: 0000 [#1] PREEMPT SMP NOPTI CPU: 3 PID: 1736 Comm: mount.cifs No est\\u00e1 contaminado 6.7.0-rc4 #1 Nombre de hardware: QEMU Standard PC (Q35 + ICH9, 2009), BIOS rel-1.16.2 -3-gd478f380-rebuilt.opensuse.org 04/04/2014 RIP: 0010: SMB2_PARSE_CONTEXTS+0XA0/0X3A0 [CIFS] C\\u00f3digo: F8 10 75 13 48 B8 93 AD 25 50 9C B4 11 E7 49 39 06 0f 84 D2 00 00 00 8b 45 00 85 c0 74 61 41 29 c5 48 01 c5 41 83 fd 0f 76 55 \u0026lt;0f\u0026gt; b7 7d 04 0f b7 45 06 4c 8d 74 3d 00 66 83 f8 04 75 bc ba 04 00 RSP: 0018:ffffc900007939e0 EFLAGS: 00010216 RAX: ffffc90000793c78 RBX: ffff8880180cc000 RCX: ffffc90000793c90 RDX: ffffc90000793cc0 RSI: ffff8880178d8cc0 RDI: ffff8880180cc000 RBP: ffff8881178d8cbf R08: ffffc90000793c22 R09: 0000000000000000 R10: ffff8880180cc000 R11: 00000000000000024 R12: 0000000000000000 R13: 0000000 000000020 R14: 00000000000000000 R15: ffffc90000793c22 FS: 00007f873753cbc0(0000) GS:ffff88806bc00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffff8881178d8cc3 CR3 : 00000000181ca000 CR4: 0000000000750ef0 PKRU: 55555554 Seguimiento de llamadas: ? __morir+0x23/0x70 ? page_fault_oops+0x181/0x480? search_module_extables+0x19/0x60? srso_alias_return_thunk+0x5/0xfbef5? exc_page_fault+0x1b6/0x1c0? asm_exc_page_fault+0x26/0x30? smb2_parse_contexts+0xa0/0x3a0 [cifs] SMB2_open+0x38d/0x5f0 [cifs] ? smb2_is_path_accessible+0x138/0x260 [cifs] smb2_is_path_accessible+0x138/0x260 [cifs] cifs_is_path_remote+0x8d/0x230 [cifs] cifs_mount+0x7e/0x350 [cifs] cifs_smb3_do_mount+0x128/0x7 80 [cifs] smb3_get_tree+0xd9/0x290 [cifs] vfs_get_tree+ 0x2c/0x100? capaz+0x37/0x70 path_mount+0x2d7/0xb80? srso_alias_return_thunk+0x5/0xfbef5? _raw_spin_unlock_irqrestore+0x44/0x60 __x64_sys_mount+0x11a/0x150 do_syscall_64+0x47/0xf0 Entry_SYSCALL_64_after_hwframe+0x6f/0x77 RIP: 0033:0x7f8737657b1e\"}]",
"id": "CVE-2023-52434",
"lastModified": "2025-01-10T19:04:33.103",
"metrics": "{\"cvssMetricV31\": [{\"source\": \"nvd@nist.gov\", \"type\": \"Primary\", \"cvssData\": {\"version\": \"3.1\", \"vectorString\": \"CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H\", \"baseScore\": 8.0, \"baseSeverity\": \"HIGH\", \"attackVector\": \"ADJACENT_NETWORK\", \"attackComplexity\": \"LOW\", \"privilegesRequired\": \"LOW\", \"userInteraction\": \"NONE\", \"scope\": \"UNCHANGED\", \"confidentialityImpact\": \"HIGH\", \"integrityImpact\": \"HIGH\", \"availabilityImpact\": \"HIGH\"}, \"exploitabilityScore\": 2.1, \"impactScore\": 5.9}]}",
"published": "2024-02-20T18:15:50.790",
"references": "[{\"url\": \"https://git.kernel.org/stable/c/13fb0fc4917621f3dfa285a27eaf7151d770b5e5\", \"source\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"tags\": [\"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/17a0f64cc02d4972e21c733d9f21d1c512963afa\", \"source\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"tags\": [\"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/1ae3c59355dc9882e09c020afe8ffbd895ad0f29\", \"source\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"tags\": [\"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/6726429c18c62dbf5e96ebbd522f262e016553fb\", \"source\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"tags\": [\"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/890bc4fac3c0973a49cac35f634579bebba7fe48\", \"source\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"tags\": [\"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/af1689a9b7701d9907dfc84d2a4b57c4bc907144\", \"source\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"tags\": [\"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/13fb0fc4917621f3dfa285a27eaf7151d770b5e5\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/17a0f64cc02d4972e21c733d9f21d1c512963afa\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/1ae3c59355dc9882e09c020afe8ffbd895ad0f29\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/6726429c18c62dbf5e96ebbd522f262e016553fb\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/890bc4fac3c0973a49cac35f634579bebba7fe48\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/af1689a9b7701d9907dfc84d2a4b57c4bc907144\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Patch\"]}, {\"url\": \"https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Mailing List\"]}]",
"sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"vulnStatus": "Analyzed",
"weaknesses": "[{\"source\": \"nvd@nist.gov\", \"type\": \"Primary\", \"description\": [{\"lang\": \"en\", \"value\": \"CWE-119\"}]}]"
},
"microsoft_vex": {
"current_release_date": "2026-02-18T01:09:20.000Z",
"cve": "CVE-2023-52434",
"id": "msrc_CVE-2023-52434",
"initial_release_date": "2024-02-02T08:00:00.000Z",
"product_status:fixed": "2",
"product_status:known_affected": "2",
"source": "Microsoft CSAF VEX",
"status": "final",
"title": "smb: client: fix potential OOBs in smb2_parse_contexts()",
"url": "https://msrc.microsoft.com/csaf/vex/2024/msrc_cve-2023-52434.json",
"version": "2"
},
"nvd": "{\"cve\":{\"id\":\"CVE-2023-52434\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2024-02-20T18:15:50.790\",\"lastModified\":\"2026-08-04T10:18:26.637\",\"vulnStatus\":\"Modified\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nsmb: client: fix potential OOBs in smb2_parse_contexts()\\n\\nValidate offsets and lengths before dereferencing create contexts in\\nsmb2_parse_contexts().\\n\\nThis fixes following oops when accessing invalid create contexts from\\nserver:\\n\\n BUG: unable to handle page fault for address: ffff8881178d8cc3\\n #PF: supervisor read access in kernel mode\\n #PF: error_code(0x0000) - not-present page\\n PGD 4a01067 P4D 4a01067 PUD 0\\n Oops: 0000 [#1] PREEMPT SMP NOPTI\\n CPU: 3 PID: 1736 Comm: mount.cifs Not tainted 6.7.0-rc4 #1\\n Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS\\n rel-1.16.2-3-gd478f380-rebuilt.opensuse.org 04/01/2014\\n RIP: 0010:smb2_parse_contexts+0xa0/0x3a0 [cifs]\\n Code: f8 10 75 13 48 b8 93 ad 25 50 9c b4 11 e7 49 39 06 0f 84 d2 00\\n 00 00 8b 45 00 85 c0 74 61 41 29 c5 48 01 c5 41 83 fd 0f 76 55 \u003c0f\u003e b7\\n 7d 04 0f b7 45 06 4c 8d 74 3d 00 66 83 f8 04 75 bc ba 04 00\\n RSP: 0018:ffffc900007939e0 EFLAGS: 00010216\\n RAX: ffffc90000793c78 RBX: ffff8880180cc000 RCX: ffffc90000793c90\\n RDX: ffffc90000793cc0 RSI: ffff8880178d8cc0 RDI: ffff8880180cc000\\n RBP: ffff8881178d8cbf R08: ffffc90000793c22 R09: 0000000000000000\\n R10: ffff8880180cc000 R11: 0000000000000024 R12: 0000000000000000\\n R13: 0000000000000020 R14: 0000000000000000 R15: ffffc90000793c22\\n FS: 00007f873753cbc0(0000) GS:ffff88806bc00000(0000)\\n knlGS:0000000000000000\\n CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033\\n CR2: ffff8881178d8cc3 CR3: 00000000181ca000 CR4: 0000000000750ef0\\n PKRU: 55555554\\n Call Trace:\\n \u003cTASK\u003e\\n ? __die+0x23/0x70\\n ? page_fault_oops+0x181/0x480\\n ? search_module_extables+0x19/0x60\\n ? srso_alias_return_thunk+0x5/0xfbef5\\n ? exc_page_fault+0x1b6/0x1c0\\n ? asm_exc_page_fault+0x26/0x30\\n ? smb2_parse_contexts+0xa0/0x3a0 [cifs]\\n SMB2_open+0x38d/0x5f0 [cifs]\\n ? smb2_is_path_accessible+0x138/0x260 [cifs]\\n smb2_is_path_accessible+0x138/0x260 [cifs]\\n cifs_is_path_remote+0x8d/0x230 [cifs]\\n cifs_mount+0x7e/0x350 [cifs]\\n cifs_smb3_do_mount+0x128/0x780 [cifs]\\n smb3_get_tree+0xd9/0x290 [cifs]\\n vfs_get_tree+0x2c/0x100\\n ? capable+0x37/0x70\\n path_mount+0x2d7/0xb80\\n ? srso_alias_return_thunk+0x5/0xfbef5\\n ? _raw_spin_unlock_irqrestore+0x44/0x60\\n __x64_sys_mount+0x11a/0x150\\n do_syscall_64+0x47/0xf0\\n entry_SYSCALL_64_after_hwframe+0x6f/0x77\\n RIP: 0033:0x7f8737657b1e\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se resolvi\u00f3 la siguiente vulnerabilidad: smb: cliente: corrige OOB potenciales en smb2_parse_contexts() Valida compensaciones y longitudes antes de desreferenciar crea contextos en smb2_parse_contexts(). Esto corrige los siguientes errores al acceder a contextos de creaci\u00f3n no v\u00e1lidos desde el servidor: ERROR: no se puede manejar el error de p\u00e1gina para la direcci\u00f3n: ffff8881178d8cc3 #PF: acceso de lectura del supervisor en modo kernel #PF: error_code(0x0000) - p\u00e1gina no presente PGD 4a01067 P4D 4a01067 PUD 0 Ups: 0000 [#1] PREEMPT SMP NOPTI CPU: 3 PID: 1736 Comm: mount.cifs No est\u00e1 contaminado 6.7.0-rc4 #1 Nombre de hardware: QEMU Standard PC (Q35 + ICH9, 2009), BIOS rel-1.16.2 -3-gd478f380-rebuilt.opensuse.org 04/04/2014 RIP: 0010: SMB2_PARSE_CONTEXTS+0XA0/0X3A0 [CIFS] C\u00f3digo: F8 10 75 13 48 B8 93 AD 25 50 9C B4 11 E7 49 39 06 0f 84 D2 00 00 00 8b 45 00 85 c0 74 61 41 29 c5 48 01 c5 41 83 fd 0f 76 55 \u0026lt;0f\u0026gt; b7 7d 04 0f b7 45 06 4c 8d 74 3d 00 66 83 f8 04 75 bc ba 04 00 RSP: 0018:ffffc900007939e0 EFLAGS: 00010216 RAX: ffffc90000793c78 RBX: ffff8880180cc000 RCX: ffffc90000793c90 RDX: ffffc90000793cc0 RSI: ffff8880178d8cc0 RDI: ffff8880180cc000 RBP: ffff8881178d8cbf R08: ffffc90000793c22 R09: 0000000000000000 R10: ffff8880180cc000 R11: 00000000000000024 R12: 0000000000000000 R13: 0000000 000000020 R14: 00000000000000000 R15: ffffc90000793c22 FS: 00007f873753cbc0(0000) GS:ffff88806bc00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffff8881178d8cc3 CR3 : 00000000181ca000 CR4: 0000000000750ef0 PKRU: 55555554 Seguimiento de llamadas: ? __morir+0x23/0x70 ? page_fault_oops+0x181/0x480? search_module_extables+0x19/0x60? srso_alias_return_thunk+0x5/0xfbef5? exc_page_fault+0x1b6/0x1c0? asm_exc_page_fault+0x26/0x30? smb2_parse_contexts+0xa0/0x3a0 [cifs] SMB2_open+0x38d/0x5f0 [cifs] ? smb2_is_path_accessible+0x138/0x260 [cifs] smb2_is_path_accessible+0x138/0x260 [cifs] cifs_is_path_remote+0x8d/0x230 [cifs] cifs_mount+0x7e/0x350 [cifs] cifs_smb3_do_mount+0x128/0x7 80 [cifs] smb3_get_tree+0xd9/0x290 [cifs] vfs_get_tree+ 0x2c/0x100? capaz+0x37/0x70 path_mount+0x2d7/0xb80? srso_alias_return_thunk+0x5/0xfbef5? _raw_spin_unlock_irqrestore+0x44/0x60 __x64_sys_mount+0x11a/0x150 do_syscall_64+0x47/0xf0 Entry_SYSCALL_64_after_hwframe+0x6f/0x77 RIP: 0033:0x7f8737657b1e\"}],\"affected\":[{\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"affectedData\":[{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"unaffected\",\"programFiles\":[\"fs/smb/client/cached_dir.c\",\"fs/smb/client/smb2pdu.c\",\"fs/smb/client/smb2proto.h\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"b8c32dbb0deb287a5fcb78251e4eae6c7275760d\",\"lessThan\":\"6726429c18c62dbf5e96ebbd522f262e016553fb\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"b8c32dbb0deb287a5fcb78251e4eae6c7275760d\",\"lessThan\":\"13fb0fc4917621f3dfa285a27eaf7151d770b5e5\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"b8c32dbb0deb287a5fcb78251e4eae6c7275760d\",\"lessThan\":\"890bc4fac3c0973a49cac35f634579bebba7fe48\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"b8c32dbb0deb287a5fcb78251e4eae6c7275760d\",\"lessThan\":\"1ae3c59355dc9882e09c020afe8ffbd895ad0f29\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"b8c32dbb0deb287a5fcb78251e4eae6c7275760d\",\"lessThan\":\"17a0f64cc02d4972e21c733d9f21d1c512963afa\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"b8c32dbb0deb287a5fcb78251e4eae6c7275760d\",\"lessThan\":\"af1689a9b7701d9907dfc84d2a4b57c4bc907144\",\"versionType\":\"git\",\"status\":\"affected\"}]},{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"affected\",\"programFiles\":[\"fs/smb/client/cached_dir.c\",\"fs/smb/client/smb2pdu.c\",\"fs/smb/client/smb2proto.h\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"3.7\",\"status\":\"affected\"},{\"version\":\"0\",\"lessThan\":\"3.7\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.4.277\",\"lessThanOrEqual\":\"5.4.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.10.211\",\"lessThanOrEqual\":\"5.10.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.15.150\",\"lessThanOrEqual\":\"5.15.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.1.79\",\"lessThanOrEqual\":\"6.1.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.6.8\",\"lessThanOrEqual\":\"6.6.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.7\",\"lessThanOrEqual\":\"*\",\"versionType\":\"original_commit_for_fix\",\"status\":\"unaffected\"}]}]}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:H\",\"baseScore\":8.1,\"baseSeverity\":\"HIGH\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"NONE\",\"userInteraction\":\"REQUIRED\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"HIGH\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":2.8,\"impactScore\":5.2},{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H\",\"baseScore\":8.0,\"baseSeverity\":\"HIGH\",\"attackVector\":\"ADJACENT_NETWORK\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"HIGH\",\"integrityImpact\":\"HIGH\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":2.1,\"impactScore\":5.9}],\"ssvcV203\":[{\"source\":\"134c704f-9b21-4f2e-91b3-4a467353bcc0\",\"ssvcData\":{\"timestamp\":\"2024-02-20T19:31:41.798943Z\",\"id\":\"CVE-2023-52434\",\"options\":[{\"exploitation\":\"none\"},{\"automatable\":\"no\"},{\"technicalImpact\":\"partial\"}],\"role\":\"CISA 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"redhat_vex": {
"aggregate_severity": "Moderate",
"current_release_date": "2026-08-04T19:27:51+00:00",
"cve": "CVE-2023-52434",
"id": "CVE-2023-52434",
"initial_release_date": "2023-01-01T00:00:00+00:00",
"product_status:fixed": "1090",
"product_status:known_affected": "50",
"product_status:known_not_affected": "18",
"source": "Red Hat CSAF VEX",
"status": "final",
"title": "kernel: smb: client: fix potential OOBs in smb2_parse_contexts()",
"url": "https://security.access.redhat.com/data/csaf/v2/vex/2023/cve-2023-52434.json",
"version": "3"
},
"suse_vex": {
"aggregate_severity": "moderate",
"current_release_date": "2026-08-05T01:07:48Z",
"cve": "CVE-2023-52434",
"id": "CVE-2023-52434",
"initial_release_date": "2024-02-22T03:06:12Z",
"product_status:known_affected": "663",
"product_status:known_not_affected": "30",
"product_status:recommended": "405",
"source": "SUSE CSAF VEX",
"status": "interim",
"title": "SUSE CVE CVE-2023-52434",
"url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2023-52434.json",
"version": "84"
},
"vulnrichment": {
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\"providerMetadata\": {\"orgId\": \"af854a3a-2127-422b-91ae-364da2661108\", \"shortName\": \"CVE\", \"dateUpdated\": \"2025-01-17T20:02:50.854Z\"}}, {\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2023-52434\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"partial\"}], \"version\": \"2.0.3\", \"timestamp\": \"2024-02-20T19:31:41.798943Z\"}}}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2024-07-05T15:20:37.982Z\"}}], \"cna\": {\"title\": \"smb: client: fix potential OOBs in smb2_parse_contexts()\", \"affected\": [{\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"b8c32dbb0deb287a5fcb78251e4eae6c7275760d\", \"lessThan\": \"6726429c18c62dbf5e96ebbd522f262e016553fb\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"b8c32dbb0deb287a5fcb78251e4eae6c7275760d\", \"lessThan\": \"13fb0fc4917621f3dfa285a27eaf7151d770b5e5\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"b8c32dbb0deb287a5fcb78251e4eae6c7275760d\", \"lessThan\": \"890bc4fac3c0973a49cac35f634579bebba7fe48\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"b8c32dbb0deb287a5fcb78251e4eae6c7275760d\", \"lessThan\": \"1ae3c59355dc9882e09c020afe8ffbd895ad0f29\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"b8c32dbb0deb287a5fcb78251e4eae6c7275760d\", \"lessThan\": \"17a0f64cc02d4972e21c733d9f21d1c512963afa\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"b8c32dbb0deb287a5fcb78251e4eae6c7275760d\", \"lessThan\": \"af1689a9b7701d9907dfc84d2a4b57c4bc907144\", \"versionType\": \"git\"}], \"programFiles\": [\"fs/smb/client/cached_dir.c\", 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\"unaffected\", \"version\": \"6.7\", \"versionType\": \"original_commit_for_fix\", \"lessThanOrEqual\": \"*\"}], \"programFiles\": [\"fs/smb/client/cached_dir.c\", \"fs/smb/client/smb2pdu.c\", \"fs/smb/client/smb2proto.h\"], \"defaultStatus\": \"affected\"}], \"references\": [{\"url\": \"https://git.kernel.org/stable/c/6726429c18c62dbf5e96ebbd522f262e016553fb\"}, {\"url\": \"https://git.kernel.org/stable/c/13fb0fc4917621f3dfa285a27eaf7151d770b5e5\"}, {\"url\": \"https://git.kernel.org/stable/c/890bc4fac3c0973a49cac35f634579bebba7fe48\"}, {\"url\": \"https://git.kernel.org/stable/c/1ae3c59355dc9882e09c020afe8ffbd895ad0f29\"}, {\"url\": \"https://git.kernel.org/stable/c/17a0f64cc02d4972e21c733d9f21d1c512963afa\"}, {\"url\": \"https://git.kernel.org/stable/c/af1689a9b7701d9907dfc84d2a4b57c4bc907144\"}], \"x_generator\": {\"engine\": \"bippy-1.2.0\"}, \"descriptions\": [{\"lang\": \"en\", \"value\": \"In the Linux kernel, the following vulnerability has been resolved:\\n\\nsmb: client: fix potential OOBs in smb2_parse_contexts()\\n\\nValidate offsets and lengths before dereferencing create contexts in\\nsmb2_parse_contexts().\\n\\nThis fixes following oops when accessing invalid create contexts from\\nserver:\\n\\n BUG: unable to handle page fault for address: ffff8881178d8cc3\\n #PF: supervisor read access in kernel mode\\n #PF: error_code(0x0000) - not-present page\\n PGD 4a01067 P4D 4a01067 PUD 0\\n Oops: 0000 [#1] PREEMPT SMP NOPTI\\n CPU: 3 PID: 1736 Comm: mount.cifs Not tainted 6.7.0-rc4 #1\\n Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS\\n rel-1.16.2-3-gd478f380-rebuilt.opensuse.org 04/01/2014\\n RIP: 0010:smb2_parse_contexts+0xa0/0x3a0 [cifs]\\n Code: f8 10 75 13 48 b8 93 ad 25 50 9c b4 11 e7 49 39 06 0f 84 d2 00\\n 00 00 8b 45 00 85 c0 74 61 41 29 c5 48 01 c5 41 83 fd 0f 76 55 \u003c0f\u003e b7\\n 7d 04 0f b7 45 06 4c 8d 74 3d 00 66 83 f8 04 75 bc ba 04 00\\n RSP: 0018:ffffc900007939e0 EFLAGS: 00010216\\n RAX: ffffc90000793c78 RBX: ffff8880180cc000 RCX: ffffc90000793c90\\n RDX: ffffc90000793cc0 RSI: ffff8880178d8cc0 RDI: ffff8880180cc000\\n RBP: ffff8881178d8cbf R08: ffffc90000793c22 R09: 0000000000000000\\n R10: ffff8880180cc000 R11: 0000000000000024 R12: 0000000000000000\\n R13: 0000000000000020 R14: 0000000000000000 R15: ffffc90000793c22\\n FS: 00007f873753cbc0(0000) GS:ffff88806bc00000(0000)\\n knlGS:0000000000000000\\n CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033\\n CR2: ffff8881178d8cc3 CR3: 00000000181ca000 CR4: 0000000000750ef0\\n PKRU: 55555554\\n Call Trace:\\n \u003cTASK\u003e\\n ? __die+0x23/0x70\\n ? page_fault_oops+0x181/0x480\\n ? search_module_extables+0x19/0x60\\n ? srso_alias_return_thunk+0x5/0xfbef5\\n ? exc_page_fault+0x1b6/0x1c0\\n ? asm_exc_page_fault+0x26/0x30\\n ? smb2_parse_contexts+0xa0/0x3a0 [cifs]\\n SMB2_open+0x38d/0x5f0 [cifs]\\n ? smb2_is_path_accessible+0x138/0x260 [cifs]\\n smb2_is_path_accessible+0x138/0x260 [cifs]\\n cifs_is_path_remote+0x8d/0x230 [cifs]\\n cifs_mount+0x7e/0x350 [cifs]\\n cifs_smb3_do_mount+0x128/0x780 [cifs]\\n smb3_get_tree+0xd9/0x290 [cifs]\\n vfs_get_tree+0x2c/0x100\\n ? capable+0x37/0x70\\n path_mount+0x2d7/0xb80\\n ? srso_alias_return_thunk+0x5/0xfbef5\\n ? _raw_spin_unlock_irqrestore+0x44/0x60\\n __x64_sys_mount+0x11a/0x150\\n do_syscall_64+0x47/0xf0\\n entry_SYSCALL_64_after_hwframe+0x6f/0x77\\n RIP: 0033:0x7f8737657b1e\"}], \"cpeApplicability\": [{\"nodes\": [{\"negate\": false, \"cpeMatch\": [{\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.4.277\", \"versionStartIncluding\": \"3.7\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.10.211\", \"versionStartIncluding\": \"3.7\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.15.150\", \"versionStartIncluding\": \"3.7\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.1.79\", \"versionStartIncluding\": \"3.7\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.6.8\", \"versionStartIncluding\": \"3.7\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.7\", \"versionStartIncluding\": \"3.7\"}], \"operator\": \"OR\"}]}], \"providerMetadata\": {\"orgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"shortName\": \"Linux\", \"dateUpdated\": \"2026-01-05T10:16:04.679Z\"}}}",
"cveMetadata": "{\"cveId\": \"CVE-2023-52434\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-01-05T10:16:04.679Z\", \"dateReserved\": \"2024-02-20T12:30:33.290Z\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"datePublished\": \"2024-02-20T18:04:44.006Z\", \"assignerShortName\": \"Linux\"}",
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
}
}
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
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