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TI-2023-28782 Aliases CVE-2023-52434GHSA-23gm-fr88-2r8c

smb: client: fix potential OOBs in smb2_parse_contexts()

Priority LOW 37CWE-119Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
Required
Attack complexity
Low
Impact type
—
Confidentiality · integrity · availability
High · None · High
Fix status
Partial Red Hat: 23 fixed, 2 without a fix

Attack profile from CVSS 3.1 · CNA. Fix status from CNA and Red Hat.

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

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.0102 63rd percentileScored 2026-11-07
Fix Partial Linux (Linux): 5.4.277, 5.10.211, 5.15.150 +3Red Hat: 9 advisoriesRed Hat: 23 fixed, 2 without a fix

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
LinuxLinux3.7 and later5.4.277, 5.10.211, 5.15.150, 6.1.79, 6.6.8, 6.7Patch availableCNA
  • Linux VendorLinux Affected 3.7 and later Fixed in 5.4.277, 5.10.211, 5.15.150, 6.1.79, 6.6.8, 6.7 Patch available CNA

CPE configurations NVD · 7

CPEVersionsRoleVendor
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*5.3 to before 5.4.277; 5.5 to before 5.10.211; 5.11 to before 5.15.150; 5.16 – 6.1.79; 6.2 to before 6.6.8VulnerableLinux
cpe:2.3:o:linux:linux_kernel:6.7:rc1:*:*:*:*:*:*6.7 rc1VulnerableLinux
cpe:2.3:o:linux:linux_kernel:6.7:rc2:*:*:*:*:*:*6.7 rc2VulnerableLinux
cpe:2.3:o:linux:linux_kernel:6.7:rc3:*:*:*:*:*:*6.7 rc3VulnerableLinux
cpe:2.3:o:linux:linux_kernel:6.7:rc4:*:*:*:*:*:*6.7 rc4VulnerableLinux
cpe:2.3:o:linux:linux_kernel:6.7:rc5:*:*:*:*:*:*6.7 rc5VulnerableLinux
cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*10.0VulnerableDebian
  • cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* Versions 5.3 to before 5.4.277; 5.5 to before 5.10.211; 5.11 to before 5.15.150; 5.16 – 6.1.79; 6.2 to before 6.6.8 Vulnerable ·Linux
  • cpe:2.3:o:linux:linux_kernel:6.7:rc1:*:*:*:*:*:* Versions 6.7 rc1 Vulnerable ·Linux
  • cpe:2.3:o:linux:linux_kernel:6.7:rc2:*:*:*:*:*:* Versions 6.7 rc2 Vulnerable ·Linux
  • cpe:2.3:o:linux:linux_kernel:6.7:rc3:*:*:*:*:*:* Versions 6.7 rc3 Vulnerable ·Linux
  • cpe:2.3:o:linux:linux_kernel:6.7:rc4:*:*:*:*:*:* Versions 6.7 rc4 Vulnerable ·Linux
  • cpe:2.3:o:linux:linux_kernel:6.7:rc5:*:*:*:*:*:* Versions 6.7 rc5 Vulnerable ·Linux
  • cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:* Versions 10.0 Vulnerable ·Debian

Remediation

  • Fix · CNA Linux (Linux) Fixed in 5.4.277, 5.10.211, 5.15.150, 6.1.79, 6.6.8, 6.7

Red Hat 9 advisories

  • RHSA-2024:6993 Released 2024-09-24 · Red Hat rating Important
    kernel security update
    • Red Hat CodeReady Linux Builder EUS (v.8.8) kernel-tools-libs-devel-4.18.0-477.74.1.el8_8
    • Red Hat Enterprise Linux BaseOS EUS (v.8.8) bpftool-4.18.0-477.74.1.el8_8, kernel-4.18.0-477.74.1.el8_8, kernel-abi-stablelists-4.18.0-477.74.1.el8_8 +19
  • RHSA-2024:5692 Released 2024-08-21 · Red Hat rating Moderate
    kernel security update
    • Red Hat Enterprise Linux BaseOS AUS (v.8.6) bpftool-4.18.0-372.119.1.el8_6, kernel-4.18.0-372.119.1.el8_6, kernel-abi-stablelists-4.18.0-372.119.1.el8_6 +13
    • Red Hat Enterprise Linux BaseOS E4S (v.8.6) bpftool-4.18.0-372.119.1.el8_6, kernel-4.18.0-372.119.1.el8_6, kernel-abi-stablelists-4.18.0-372.119.1.el8_6 +18
    • Red Hat Enterprise Linux BaseOS TUS (v.8.6) bpftool-4.18.0-372.119.1.el8_6, kernel-4.18.0-372.119.1.el8_6, kernel-abi-stablelists-4.18.0-372.119.1.el8_6 +13
  • RHSA-2024:4831 Released 2024-07-24 · Red Hat rating Important
    kernel-rt security update
    • Red Hat Enterprise Linux Real Time EUS (v.9.2) kernel-rt-5.14.0-284.75.1.rt14.360.el9_2, kernel-rt-core-5.14.0-284.75.1.rt14.360.el9_2, kernel-rt-debug-5.14.0-284.75.1.rt14.360.el9_2 +9
    • Red Hat Enterprise Linux Real Time for NFV EUS (v.9.2) kernel-rt-5.14.0-284.75.1.rt14.360.el9_2, kernel-rt-core-5.14.0-284.75.1.rt14.360.el9_2, kernel-rt-debug-5.14.0-284.75.1.rt14.360.el9_2 +11
Show 6 more Red Hat advisories
  • RHSA-2024:4823 Released 2024-07-24 · Red Hat rating Important
    kernel security update
    • Red Hat CodeReady Linux Builder EUS (v.9.2) kernel-tools-libs-devel-5.14.0-284.75.1.el9_2
    • Red Hat Enterprise Linux AppStream EUS (v.9.2) kernel-64k-debug-devel-5.14.0-284.75.1.el9_2, kernel-64k-debug-devel-matched-5.14.0-284.75.1.el9_2, kernel-64k-devel-5.14.0-284.75.1.el9_2 +10
    • Red Hat Enterprise Linux BaseOS EUS (v.9.2) bpftool-7.0.0-284.75.1.el9_2, kernel-5.14.0-284.75.1.el9_2, kernel-64k-5.14.0-284.75.1.el9_2 +29
  • RHSA-2024:4415 Released 2024-07-09 · Red Hat rating Important
    kernel security and bug fix update
    • Red Hat Enterprise Linux AppStream E4S (v.9.0) kernel-debug-devel-5.14.0-70.105.1.el9_0, kernel-debug-devel-matched-5.14.0-70.105.1.el9_0, kernel-devel-5.14.0-70.105.1.el9_0 +5
    • Red Hat Enterprise Linux BaseOS E4S (v.9.0) bpftool-5.14.0-70.105.1.el9_0, kernel-5.14.0-70.105.1.el9_0, kernel-abi-stablelists-5.14.0-70.105.1.el9_0 +14
  • RHSA-2024:4412 Released 2024-07-09 · Red Hat rating Important
    kernel-rt security and bug fix update
    • Red Hat Enterprise Linux NFV E4S (v.9.0) kernel-rt-5.14.0-70.105.1.rt21.177.el9_0, kernel-rt-core-5.14.0-70.105.1.rt21.177.el9_0, kernel-rt-debug-5.14.0-70.105.1.rt21.177.el9_0 +9
    • Red Hat Enterprise Linux Real Time E4S (v.9.0) kernel-rt-5.14.0-70.105.1.rt21.177.el9_0, kernel-rt-core-5.14.0-70.105.1.rt21.177.el9_0, kernel-rt-debug-5.14.0-70.105.1.rt21.177.el9_0 +7
  • RHSA-2024:2950 Released 2024-05-22 · Red Hat rating Moderate
    kernel-rt security and bug fix update
    • Red Hat Enterprise Linux NFV (v. 8) kernel-rt-4.18.0-553.rt7.342.el8_10, kernel-rt-core-4.18.0-553.rt7.342.el8_10, kernel-rt-debug-4.18.0-553.rt7.342.el8_10 +9
    • Red Hat Enterprise Linux RT (v. 8) kernel-rt-4.18.0-553.rt7.342.el8_10, kernel-rt-core-4.18.0-553.rt7.342.el8_10, kernel-rt-debug-4.18.0-553.rt7.342.el8_10 +7
  • RHSA-2024:3138 Released 2024-05-22 · Red Hat rating Moderate
    kernel security, bug fix, and enhancement update
    • Red Hat Enterprise Linux BaseOS (v. 8) bpftool-4.18.0-553.el8_10, kernel-4.18.0-553.el8_10, kernel-abi-stablelists-4.18.0-553.el8_10 +19
    • Red Hat Enterprise Linux CRB (v. 8) kernel-tools-libs-devel-4.18.0-553.el8_10
  • RHSA-2024:2394 Released 2024-04-30 · Red Hat rating Important
    kernel security, bug fix, and enhancement update
    • Red Hat Enterprise Linux AppStream (v. 9) kernel-64k-debug-devel-5.14.0-427.13.1.el9_4, kernel-64k-debug-devel-matched-5.14.0-427.13.1.el9_4, kernel-64k-devel-5.14.0-427.13.1.el9_4 +11
    • Red Hat Enterprise Linux BaseOS (v. 9) bpftool-7.3.0-427.13.1.el9_4, kernel-5.14.0-427.13.1.el9_4, kernel-64k-5.14.0-427.13.1.el9_4 +29
    • Red Hat Enterprise Linux CRB (v. 9) kernel-tools-libs-devel-5.14.0-427.13.1.el9_4, libperf-5.14.0-427.13.1.el9_4
    • Red Hat Enterprise Linux NFV (v. 9) kernel-rt-5.14.0-427.13.1.el9_4, kernel-rt-core-5.14.0-427.13.1.el9_4, kernel-rt-debug-5.14.0-427.13.1.el9_4 +11
    • Red Hat Enterprise Linux RT (v. 9) kernel-rt-5.14.0-427.13.1.el9_4, kernel-rt-core-5.14.0-427.13.1.el9_4, kernel-rt-debug-5.14.0-427.13.1.el9_4 +9

Vendor assessments

Red Hat

Red Hat rating: Moderate. Red Hat's page for this CVE →

ProductStatusPlan or fix
Red Hat Enterprise Linux 7AffectedNo fix planned: Out of support scope
Red Hat Enterprise Linux 9AffectedNo fix yet
Red Hat CodeReady Linux Builder EUS (v.8.8)Fixed RHSA-2024:6993
Red Hat CodeReady Linux Builder EUS (v.9.2)Fixed RHSA-2024:4823
Red Hat Enterprise Linux AppStream (v. 9)Fixed RHSA-2024:2394
Red Hat Enterprise Linux AppStream E4S (v.9.0)Fixed RHSA-2024:4415
Red Hat Enterprise Linux AppStream EUS (v.9.2)Fixed RHSA-2024:4823
Red Hat Enterprise Linux BaseOS (v. 8)Fixed RHSA-2024:3138
Red Hat Enterprise Linux BaseOS (v. 9)Fixed RHSA-2024:2394
Red Hat Enterprise Linux BaseOS AUS (v.8.6)Fixed RHSA-2024:5692
Red Hat Enterprise Linux BaseOS E4S (v.8.6)Fixed RHSA-2024:5692
Red Hat Enterprise Linux BaseOS E4S (v.9.0)Fixed RHSA-2024:4415
Red Hat Enterprise Linux BaseOS EUS (v.8.8)Fixed RHSA-2024:6993
Red Hat Enterprise Linux BaseOS EUS (v.9.2)Fixed RHSA-2024:4823
Red Hat Enterprise Linux BaseOS TUS (v.8.6)Fixed RHSA-2024:5692
Red Hat Enterprise Linux CRB (v. 8)Fixed RHSA-2024:3138
Red Hat Enterprise Linux CRB (v. 9)Fixed RHSA-2024:2394
Red Hat Enterprise Linux NFV (v. 8)Fixed RHSA-2024:2950
Red Hat Enterprise Linux NFV (v. 9)Fixed RHSA-2024:2394
Red Hat Enterprise Linux NFV E4S (v.9.0)Fixed RHSA-2024:4412
Red Hat Enterprise Linux RT (v. 8)Fixed RHSA-2024:2950
Red Hat Enterprise Linux RT (v. 9)Fixed RHSA-2024:2394
Red Hat Enterprise Linux Real Time E4S (v.9.0)Fixed RHSA-2024:4412
Red Hat Enterprise Linux Real Time EUS (v.9.2)Fixed RHSA-2024:4831
Red Hat Enterprise Linux Real Time for NFV EUS (v.9.2)Fixed RHSA-2024:4831
Not affected: 5 products
  • Red Hat Enterprise Linux 6
  • Red Hat Enterprise Linux AppStream EUS (v.9.2)
  • Red Hat Enterprise Linux BaseOS AUS (v.8.6)
  • Red Hat Enterprise Linux BaseOS E4S (v.8.6)
  • Red Hat Enterprise Linux BaseOS TUS (v.8.6)

Timeline

  1. 2026-10-02 Threatist record created from CVE-2023-52434
  2. 2026-10-03 Alias added: GHSA-23gm-fr88-2r8c

References

Patch 6

  • TI-2025-26358 tls: fix handling of zero-length records on the rx_list KEVCVSS 3.1CRITICAL 9.8
  • TI-2026-38352 netfilter: bridge: make ebt_snat ARP rewrite writable KEVCVSS 3.1HIGH 8.8
  • TI-2013-05264 The (1) get_user and (2) put_user API functions in the Linux kernel before 3.5.5 on the… KEVCVSS 3.1HIGH 8.8
  • TI-2022-00125 Integer overflow in kernel KEVCVSS 3.1HIGH 8.4
  • TI-2013-01864 The perf_swevent_init function in kernel/events/core.c in the Linux kernel before 3.8.9… KEVCVSS 3.1HIGH 8.4
  • TI-2021-05514 Heap Out-Of-Bounds Write in Netfilter IP6T_SO_SET_REPLACE KEVCVSS 3.1HIGH 8.3
See all 15278 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences